Gamma Cameras
Radionuclide Imaging
Tomography, Emission-Computed, Single-Photon
Photography
Video Recording
Sperm transport in the human female genital tract and its modulation by oxytocin as assessed by hysterosalpingoscintigraphy, hysterotonography, electrohysterography and Doppler sonography. (1/268)
The transport function of the uterus and oviducts and its modulation by oxytocin has been examined using hysterosalpingoscintigraphy, recording of intrauterine pressure, electrohysterography and Doppler sonography of the Fallopian tubes. After application to the posterior vaginal fornix, a rapid (within minutes) uptake of the labelled particles into the uterus was observed during the follicular and during the luteal phase of the cycle in all patients. Transport into the oviducts, however, could only be demonstrated during the follicular phase. Transport was directed predominantly into the tube ipsilateral to the ovary bearing the dominant follicle; the contralateral oviduct appeared to be functionally closed. The proportion of patients exhibiting ipsilateral transport did increase concomitant with the increase of the diameter of the dominant follicle. That ipsilateral transport has biological significance is suggested by the observation that the pregnancy rate following spontaneous intercourse or insemination was significantly higher in those women in whom ipsilateral transport could be demonstrated than in those who failed to exhibit lateralization. Oxytocin administration was followed by a dramatic increase in the amount of material transported to the ipsilateral tube, as demonstrated by radionuclide imaging and by Doppler sonography following instillation of ultrasound contrast medium. Continuous recording of intrauterine pressure before and after oxytocin administration did show an increase in basal tonus and amplitude of contractions and a reversal of the pressure gradient from a fundo-cervical to a cervico-fundal direction. These actions of oxytocin were accompanied by an increase in amplitude of potentials recorded by electrohysterography. These data support the view that uterus and Fallopian tubes represent a functional unit that is acting as a peristaltic pump and that the increasing activity of this pump during the follicular phase of the menstrual cycle is reflected by an increased transport into the oviduct ipsilateral to the ovary bearing the dominant follicle. In addition, they strongly suggest a critical role of oxytocin in this process. Failure of this mechanism appears to be a cause of subfertility or infertility, as indicated by the low pregnancy rate following intrauterine insemination or normal intercourse in the presence of patent Fallopian tubes. It may be regarded as a new nosological entity for which we propose the term tubal transport disorder (TTD). Since pregnancy rate of such patients is normal when treated with in-vitro fertilization (IVF), hysterosalpingoscintigraphy seems to be useful for the choice of treatment modalities in patients with patent Fallopian tubes suffering from infertility. (+info)Biodistribution, radiation dosimetry and pharmacokinetics of 111In-antimyosin in idiopathic inflammatory myopathies. (2/268)
In view of the established role of 111In-antimyosin in the detection of heart muscle pathology, radiation dose estimates were made for this substance. Biodistribution and biokinetic data were obtained from our studies, which failed to show abnormal uptake of 111In-antimyosin in localized sites of skeletal muscle involvement in patients with idiopathic inflammatory myopathies. METHODS: After intravenous administration of 74 MBq (2 mCi) 111In-antimyosin, gamma camera scintigraphy was performed in 12 adult patients with inflammatory muscle disease and in 2 control patients. Six whole-body scans were performed over 72 h, and uptake of 111In-antimyosin in organs was quantified using an attenuation-corrected conjugate counting method. Residence times in source organs were used with MIRDOSE software to obtain radiation dose estimates. Pharmacokinetic parameters were derived from serial whole-blood and plasma 111In concentrations. RESULTS: The tracer cleared slowly from the circulation, and highest organ uptakes were found in the marrow and liver; kidneys showed the highest concentrations. Uptake was also evident in spleen, the facial image and male genitalia. CONCLUSION: For a typical administered activity of 74 MBq 111In-antimyosin, the kidneys receive the highest dose (58 mSv), and the effective dose is 11 mSv. Radioactivity was cleared from plasma at an average rate of 136 mL/h, and the mean steady-state distribution was approximately 5 L plasma. (+info)Pretargeting of bacterial endocarditis in rats with streptavidin and 111In-labeled biotin. (3/268)
A radioimaging approach for the detection of endocarditis has been investigated using two-step pretargeting with streptavidin and radiolabeled biotin. METHODS: Hemodynamic alterations within the rat heart were induced by placing an in-dwelling catheter into the left ventricle through the aortic valves. The animals were subsequently infected with Staphylococcus aureus through a tail vein. After an incubation period, rats were first injected with streptavidin and, 2 h later, with 111In-labeled ethylene-diaminetetraacetic acid-biotin. Whole-body gamma camera images were taken 4-5 h postinjection of the radiolabeled biotin. Control animals consisted of catheterized but uninfected, infected but uncatheterized and normal untreated rats. As a further control, the labeled biotin was administered to a study animal without the preadministration of streptavidin. RESULTS: Histology showed typical endocarditic changes in the hearts of study animals with massive deposition of gram-positive cocci. Catheterized but uninfected animals showed alterations corresponding to nonbacterial thrombotic endocarditis. Macroautoradiography showed accumulation of radiolabel in the endocarditic vegetations of study animals. Whole-body gamma camera images showed important cardiac uptake in 7 of 8 catheterized and infected animals and in 3 of 6 catheterized but uninfected animals. Normal rats and those infected but not catheterized showed negative results by histology, autoradiography and imaging. The percent uptake of the injected dose in the heart was 0.20 (SD = 0.13) in catheterized and infected animals, 0.12 (SD = 0.10) in catheterized but uninfected animals, 0.10 (SD = 0.04) in infected but uncatheterized animals and 0.04 (SD = 0.01) in normal control animals. CONCLUSION: The two-step pretargeting approach using streptavidin and 111In-labeled biotin was used successfully to detect S. aureus-induced bacterial endocarditis in rats. (+info)Feasibility of fluorodeoxyglucose dual-head gamma camera coincidence imaging in the evaluation of lung cancer: comparison with FDG PET. (4/268)
The purpose of this study was to elucidate the feasibility of fluorodeoxyglucose gamma camera coincidence imaging (FDG GCI) in the evaluation of lung cancer in comparison with FDG PET. METHODS: Twenty-three patients with recently diagnosed lung cancer were examined with both FDG PET and FDG GCI on the same day. Pulmonary lesions were analyzed visually and semiquantitatively using the ratio of lesion-to-background counts (L/B ratio). The L/B ratio of FDG PET without attenuation correction (AC) was also calculated and compared. Nodal stations were only visually analyzed. RESULTS: FDG GCI and FDG PET could detect 22 and 23, respectively, of 23 pulmonary lesions by visual analysis (95.7% versus 100%). The L/B ratio of FDG GCI was 4.26 +/- 2.55, and significantly lower than that of FDG PET (9.29 +/- 4.95; P < 0.01). The L/B ratio of FDG PET was significantly higher with AC than that without AC (9.29 +/- 4.95 vs. 6.66 +/- 4.65; P < 0.01). When the L/B ratio threshold was set at 5.0 for FDG PET and 2.7 for FDG GCI, their sensitivity was 87.0% and 73.9%, respectively. Of the 3 and 6 patients with false-negative results on semiquantitative analysis, the lesions in 3 patients on FDG PET and 4 patients on FDG GCI were less than or equal to 2.0 cm in greatest diameter, respectively. In the assessment of mediastinal involvement, FDG PET was 77.8% sensitive, 78.6% specific and 78.3% accurate, whereas FDG GCI was 77.8% sensitive, 92.9% specific and 87.0% accurate. In the hilar regions, FDG PET was 100% sensitive, 84.2% specific and 87.0% accurate, whereas FDG GCI was 75.0% sensitive, 89.5% specific and 87.0% accurate. CONCLUSION: In this study, FDG GCI yielded results comparable to FDG PET on visual analysis to detect pulmonary lesions and lymph node metastases. However, the lesion-to-background contrasts of pulmonary lesions and nodal involvement were lower in FDG GCI than in FDG PET. Comparison between the L/B ratio of FDG PET with and without AC indicated that, with AC, FDG GCI would be closer to FDG PET in the evaluation of lung cancer. (+info)Assessment of pulmonary lesions with 18F-fluorodeoxyglucose positron imaging using coincidence mode gamma cameras. (5/268)
Accurate assessment of lung carcinoma remains a significant clinical problem, often leading to surgical procedures without curative potential. PET with 18F-fluorodeoxyglucose (FDG) has shown promise in differentiating benign from malignant lesions and in staging the extent of disease, resulting in improved treatment at a significant cost savings. This multicenter prospective study used dual-detector coincidence imaging with FDG to categorize pulmonary lesions as benign or malignant. The goal of this study was to determine the sensitivity and specificity of dual-detector coincidence imaging of FDG in patients with pulmonary lesions who were scheduled to have a diagnostic procedure for histopathologic confirmation. METHODS: A total of 96 patients with pulmonary lesions with a lesion size ranging from 1 to 7 cm with a mean of 3.44 cm based on their chest radiograph or CT scan were studied using FDG scans with a dual-detector coincidence detection system. An additional 24 patients were entered as control subjects. The studies of 120 subjects were interpreted in random order by three physicians experienced in the use of FDG in patients with lung cancer. Surgical pathology was used as the standard for identifying malignant lesions. RESULTS: There was 94% agreement between the readers in the independent interpretation of the FDG studies. In the 96 patients with pulmonary lesions, FDG studies were 97% sensitive and 80% specific in identifying proven malignant lesions. CONCLUSION: The results of this prospective study provide evidence that dual-detector coincidence imaging with FDG provides an accurate, sensitive and specific means of diagnosing malignancy in patients with pulmonary lesions. (+info)Rapid evaluation of weekly scintillation camera resolution and linearity using the orthogonal tri-hole phantom. (6/268)
OBJECTIVE: Both state and federal regulations require weekly monitoring of the resolution and linearity of the scintillation camera. Several phantoms are available to perform this quality control function. These include the quadrant bar. Bureau of Radiological Health (BRH), and orthogonal-hole (OH) phantoms. Each of these phantoms has either functional or temporal limitations on its use. The orthogonal tri-hole phantom (OTHP) was designed to overcome these limitations. METHODS: The OTHP consists of a precision-drilled lead plate sandwiched between two plastic plates. The OTHP has an active area of 15 in. x 20 in. which contains an orthogonal array of three-hole (2.5-mm, 3.0-mm, and 4.0-mm) clusters. Intrinsic and extrinsic images were acquired for the OTHP, OH phantom, BRH phantom and quadrant bar phantom. RESULTS: The OTHP test pattern allows resolution, linearity, object shape, and contrast to be evaluated simultaneously, either intrinsically or extrinsically, in a single image over the entire useful field-of-view. CONCLUSION: The OTHP provides a more quantitative evaluation of the quality control parameters than any other phantom currently available. The use of the OTHP results in cost savings since both camera and technologist time are reduced because only one image is required instead of the two or four needed for other phantoms. (+info)Improved renal cortical SPECT of neonates and young infants using narrow imaging pallets. (7/268)
OBJECTIVE: The widths of most commercially-made imaging pallets limit the resolution of 99mTc DMSA SPECT imaging in neonates and young infants. We constructed a pediatric imaging pallet for 99mTc DMSA SPECT of neonates and young infants designed to allow close apposition of the camera to these patients during the entire orbit. METHODS: We designed the imaging pallet to replace the standard removable pallet on the imaging stand of a commercial gamma camera. The device consisted of two parts: a steel bracket attached to the imaging stand and a polyvinyl chloride imaging pallet. The imaging pallet consisted of interchangeable 15.24-cm (6-in) or 20.32-cm (8-in) diameter, 6.35-mm (1/4-in) thick polyvinyl chloride plumbing pipes cut in half lengthwise. RESULTS: The pallets were mechanically stable with loads 3 times that expected in clinical practice. Attenuation was acceptable and comparable to commercial pallets. The hemicylindrical shape provided side support and reduced patient motion, as well as allowing closer apposition of the camera head to the patient. The quality of these 99mTc DMSA SPECT images compared favorably with those obtainable in older children and adults. Specifically, the renal cortices were well delineated from the collecting systems and anatomic detail of normal cortex could be readily distinguished from abnormal cortex. CONCLUSION: Custom pediatric imaging pallets optimized for use in neonates and small children can be constructed inexpensively. These pallets are easy to use and are stable. Use of these pallets can optimize 99mTc DMSA SPECT images of neonates and young infants. (+info)Comparison of dual-head coincidence gamma camera FDG imaging with FDG PET in detection of breast cancer and axillary lymph node metastasis. (8/268)
Dual-head coincidence gamma camera 18F-fluorodeoxyglucose (FDG) imaging was compared with FDG PET in the detection of breast cancer and axillary lymph node metastasis. METHODS: Both coincidence gamma camera FDG imaging and FDG PET were performed in a cylindrical phantom containing spheres of different sizes and activity ratios (5:1, 10:1 and 15:1) and in 30 women (age range 32-78 y) with suspected breast cancer. Biopsies or mastectomies were performed in all patients. Images were visually assessed, and the count ratio between tumor and normal tissue (T/N ratio) was calculated. RESULTS: In the phantom studies, coincidence gamma camera imaging visualized the smallest sphere (1.0 cm) at a ratio of 15:1 but not at ratios of 5:1 and 10:1. Coincidence gamma camera imaging visualized the other spheres (> or =1.3 cm) at all ratios. PET visualized all spheres at all ratios. In the clinical studies, 22 of 26 breast carcinomas detected by PET were also detected by coincidence gamma camera imaging.. Coincidence gamma camera imaging detected all of the carcinomas > or =2 cm in diameter (n = 10) and 12 of 16 carcinomas <2 cm. In breast carcinomas detected by both PET and coincidence gamma camera imaging, the T/N ratio in non-attenuation-corrected PET (7.12 +/- 7.13) was significantly higher than in coincidence gamma camera imaging (2.90 +/- 1.47, P < 0.005). Four of 8 axillary lymph node metastases detected by PET were detected by coincidence gamma camera imaging. Of 9 axillary lymph node metastases <1.0 cm in diameter, 7 and 3 were detected by PET and coincidence gamma camera imaging, respectively. CONCLUSION: Coincidence gamma camera imaging is useful in detecting breast carcinoma > or =2 cm in diameter but is not reliable for breast carcinoma <2 cm in diameter. Coincidence gamma camera imaging may be useless or even dangerous in the detection of axillary lymph node metastasis. (+info)A gamma camera, also known as a scintillation camera, is a device used in nuclear medicine to image gamma-emitting radionuclides in the body. It detects gamma radiation emitted by radioisotopes that have been introduced into the body, usually through injection or ingestion. The camera consists of a large flat crystal (often sodium iodide) that scintillates when struck by gamma rays, producing light flashes that are detected by an array of photomultiplier tubes.
The resulting signals are then processed by a computer to generate images that reflect the distribution and concentration of the radionuclide in the body. Gamma cameras are used in a variety of medical imaging procedures, including bone scans, lung scans, heart scans (such as myocardial perfusion imaging), and brain scans. They can help diagnose conditions such as cancer, heart disease, and neurological disorders.
Radionuclide imaging, also known as nuclear medicine, is a medical imaging technique that uses small amounts of radioactive material, called radionuclides or radiopharmaceuticals, to diagnose and treat various diseases and conditions. The radionuclides are introduced into the body through injection, inhalation, or ingestion and accumulate in specific organs or tissues. A special camera then detects the gamma rays emitted by these radionuclides and converts them into images that provide information about the structure and function of the organ or tissue being studied.
Radionuclide imaging can be used to evaluate a wide range of medical conditions, including heart disease, cancer, neurological disorders, gastrointestinal disorders, and bone diseases. The technique is non-invasive and generally safe, with minimal exposure to radiation. However, it should only be performed by qualified healthcare professionals in accordance with established guidelines and regulations.
Emission-Computed Tomography, Single-Photon (SPECT) is a type of nuclear medicine imaging procedure that generates detailed, three-dimensional images of the distribution of radioactive pharmaceuticals within the body. It uses gamma rays emitted by a radiopharmaceutical that is introduced into the patient's body, and a specialized gamma camera to detect these gamma rays and create tomographic images. The data obtained from the SPECT imaging can be used to diagnose various medical conditions, evaluate organ function, and guide treatment decisions. It is commonly used to image the heart, brain, and bones, among other organs and systems.
I'm sorry for any confusion, but "photography" is not a term typically used in medical definitions. Photography refers to the art, application, or process of creating images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.
If you're looking for a medical term related to imaging, there are several terms that might be relevant, such as:
1. Radiography: This is a technique using X-rays to visualize the internal structures of the body.
2. Ultrasonography: Also known as ultrasound, this is a diagnostic imaging technique using high-frequency sound waves to create images of the inside of the body.
3. Computed Tomography (CT): A type of imaging that uses X-rays to create detailed cross-sectional images of the body.
4. Magnetic Resonance Imaging (MRI): A type of imaging that uses magnetic fields and radio waves to create detailed images of the organs and tissues within the body.
5. Nuclear Medicine: This is a branch of medical imaging that uses small amounts of radioactive material to diagnose and treat diseases.
If you have any questions related to medical definitions or topics, feel free to ask!
I apologize, but "video recording" is not a term that has a specific medical definition. It generally refers to the process of capturing and storing moving visual images on electronic media, which is used in various medical fields for different purposes such as surgical training, telemedicine consultations, or monitoring patient conditions. However, there is no unique medical meaning associated with this term.
Scintillation counting is a method used in medical physics and nuclear medicine to detect and quantify radioactivity. It relies on the principle that certain materials, known as scintillators, emit light flashes (scintillations) when they absorb ionizing radiation. This light can then be detected and measured to determine the amount of radiation present.
In a scintillation counting system, the sample containing radioisotopes is placed in close proximity to the scintillator. When radiation is emitted from the sample, it interacts with the scintillator material, causing it to emit light. This light is then detected by a photomultiplier tube (PMT), which converts the light into an electrical signal that can be processed and counted by electronic circuits.
The number of counts recorded over a specific period of time is proportional to the amount of radiation emitted by the sample, allowing for the quantification of radioactivity. Scintillation counting is widely used in various applications such as measuring radioactive decay rates, monitoring environmental radiation levels, and analyzing radioisotopes in biological samples.
Gamma camera
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Gamma camera - Wikipedia
ECRI warns of gamma camera hazard | Modern Healthcare
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Accuracy of the quantification of organ activity from planar gamma camera images | Lund University Publications
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Rays16
- The applications of scintigraphy include early drug development and nuclear medical imaging to view and analyse images of the human body or the distribution of medically injected, inhaled, or ingested radionuclides emitting gamma rays. (wikipedia.org)
- The highly efficient capture method of this combination for detecting gamma rays was discovered in 1944 by Sir Samuel Curran whilst he was working on the Manhattan Project at the University of California at Berkeley. (wikipedia.org)
- The initial phenomenon of the excited electron is similar to the photoelectric effect and (particularly with gamma rays) the Compton effect. (wikipedia.org)
- It will directly convert gamma rays to electrical pulses,'Conwell told SCAN. (diagnosticimaging.com)
- The mobile gamma camera runs on the principle of radionucleotide and radioactive rays. (amarketplaceresearch.com)
- While the gamma camera is frequently used to measure functional parameters from organs, such as renal function, left ventricular ejection fraction, relative myocardial perfusion and thyroid uptake, the data obtained in these settings are non-quantitative in that the analyses are based on the count rates of the gamma rays recorded by the detector and not normally converted to absolute values of radioactivity concentration (e.g. kBq mL −1 ). (springeropen.com)
- In proton therapy, 4.4 MeV gamma rays are emitted from the excited nucleus of either 12 C∗or 11 B∗and are considered good indicators of dose delivery and/or range verification. (elsevierpure.com)
- Further, in gamma-ray astronomy, 4.4 MeV gamma rays are produced by cosmic ray interactions in the interstellar medium, and can thus be used to probe nucleothynthesis in the universe. (elsevierpure.com)
- In this paper, we present a high-precision image of 4.4 MeV gamma rays taken by newly developed 3-D position sensitive Compton camera (3D-PSCC). (elsevierpure.com)
- The 4.4 MeV gamma rays constitute a broad peak, including single and double escape peaks. (elsevierpure.com)
- In functional imaging, however, patients are injected with a radioactive pharmaceutical and the patients themselves emit rays, which are detected by gamma camera or a positron emission tomography (PET) system, according to the energy window of the radioactive drug used for the clinical investigation needed. (isixsigma.com)
- The radioisotope releases gamma rays. (healthline.com)
- A gamma camera or scanner can detect gamma rays from outside your body. (healthline.com)
- The scanner will detect the gamma rays from the radioisotope and create images of the area. (healthline.com)
- Gamma rays emitted by the radionuclide interact with scintillation crystals in the camera, creating light photons that are converted into electrical signals by photomultiplier tubes. (msdmanuals.com)
- The experiment chamber is flooded with electromagnetic radiation up to gamma rays (from scattering of the high energy electrons). (lu.se)
SPECT6
- SPECT (single photon emission computed tomography) imaging, as used in nuclear cardiac stress testing, is performed using gamma cameras. (wikipedia.org)
- SPECT is currently the biggest application of gamma cameras given the low cost, large suite of radioisotopes, and expanded use cases. (pharmiweb.com)
- Siemens' dual-detector gammacamra camera has the same features as the Symbia E Dual-Head, but it also has a number of other additional features, including: It has an automatic collimator switching system, including an in-system ECG option and upgradeable to TruePoint SPECT-CT. (scanteb.com)
- In our hands, state-of-the-art hybrid SPECT/CT gamma cameras were able to provide accurate estimates of in vivo radioactivity to better than, on average, ±10 % for use in biodistribution and radionuclide dosimetry calculations. (springeropen.com)
- This study assesses gamma camera performance and SPECT image quality at high 166 Ho activities of several GBq. (dissem.in)
- SPECT uses a gamma camera that rotates around the patient. (msdmanuals.com)
Positron emission t3
- Multi-headed gamma cameras can also be used for positron emission tomography (PET) scanning, provided that their hardware and software can be configured to detect "coincidences" (near simultaneous events on 2 different heads). (wikipedia.org)
- This radiation can include gamma-ray photons or particulate emission (such as positrons, used in positron emission tomography). (msdmanuals.com)
- HlthRes-DB also contains indicators on the availability of the following medical equipment: computed tomography (CT) scanners, magnetic resonance imaging (MRI) units, positron emission tomography (PET) scanners, gamma cameras, digital subtraction angiography units, mammographs, radiation therapy equipment and lithotriptors. (who.int)
Photons7
- Gamma camera PET is markedly inferior to PET imaging with a purpose designed PET scanner, as the scintillator crystal has poor sensitivity for the high-energy annihilation photons, and the detector area is significantly smaller. (wikipedia.org)
- The system accumulates events, or counts, of gamma photons that are absorbed by the crystal in the camera. (wikipedia.org)
- 112 The total sum of the voltages from each photomultiplier, measured by a pulse height analyzer is proportional to the energy of the gamma ray interaction, thus allowing discrimination between different isotopes or between scattered and direct photons. (wikipedia.org)
- 166 In order to obtain spatial information about the gamma-ray emissions from an imaging subject (e.g. a person's heart muscle cells which have absorbed an intravenous injected radioactive, usually thallium-201 or technetium-99m, medicinal imaging agent) a method of correlating the detected photons with their point of origin is required. (wikipedia.org)
- Gamma cameras detect high-energy "gamma" photons from the radioactive atoms in the patient's body. (medicalradiationinfo.org)
- These photons escape the patient's body and enter the gamma camera after passing through a collimator , which is a set of metal tubes organized in the style of a matrix. (medicalradiationinfo.org)
- The high-energy gamma photons meet a detector called a scintillation crystal, which converts them into light. (medicalradiationinfo.org)
Scintillators4
- Prototype has been tested with different shape NaI(Tl) scintillators and gammas with different energy. (infn.it)
- The collimator is made active by constructing it with a uniformly redundant array of patterned Bi 4 Ge 3 O 12 (BGO) scintillators, which not only attenuates incident radiations but also detects scattered radiation, in a gamma-camera consisting of and five planar CsI(Na) scintillators. (korea.ac.kr)
- We have developed LaBr 3 (Ce) pixel scintillator arrays for an electron-tracking Compton camera (ETCC) that consists of a gaseous time projection chamber (TPC) and the scintillators. (elsevierpure.com)
- The TPC measures the three-dimensional track and energy of a Compton recoil electron, while the scintillators measure the energy and position of the scattered gamma ray. (elsevierpure.com)
Compton1
- Mechanical collimation with photon absorption and electronic collimation using Compton scattering are combined to form a cubic gamma camera with an active collimator. (korea.ac.kr)
Full-frame mirrorless camera2
- This is the full-frame mirrorless camera for those who sweat every little detail. (nikonusa.com)
- Optimized video, optimized sensitivity, optimized speed, the Sony a7S III raises the bar for what a full-frame mirrorless camera is capable of. (bhphotovideo.com)
Detector2
- The field of view of the Siemens Symbia gamma-camara is large and rectangular with dimensions of 53.3 cm x 38.7 cm with 59 PMT per detector. (scanteb.com)
- The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph. (bvsalud.org)
Collimator2
- The Symbia E's single-head core camera has the smallest size of the four mixed models of the Siemens Symbia E. The Single-Head core camera is suitable for general purpose shooting, featuring a relatively large gantry and fast collimator switching system called BICORE. (scanteb.com)
- Lee, T & Lee, W 2014, ' A cubic gamma camera with an active collimator ', Applied Radiation and Isotopes , vol. 90, pp. 102-108. (korea.ac.kr)
Sensitivity3
- The accuracy depends on several parameters such as the choice of background correction method, the accuracy in determination of the effective attenuation coefficient and the thickness of the body and organs and on the determination of the gamma camera sensitivity. (lu.se)
- The dual-head Symbia E Dual-Head Variable Angle Camera, which enables the angles of the detectors in 180°, 90° and 76° to allow the system to prepare the sensitivity and power of the Gamacmera device for general scanning, cardiovascular, oncology and neurological scanning. (scanteb.com)
- Studies using MBI and breast-specific gamma-imaging have shown that these methods have comparable sensitivity to breast MRI. (nih.gov)
35mm camera equivalent1
- Based on the CIPA standard [Yaw/Pitch direction: focusing distance f=60mm (35mm camera equivalent f=120mm) when H-ES12060 is used. (panasonic.com)
Mobile gamma cameras market12
- Mobile Gamma Cameras Market Competitive Growth Strategies. (pharmiweb.com)
- These findings are presented in a new research study on the global mobile gamma cameras market by Future Market Insights (FMI). (pharmiweb.com)
- FMI predicts a growth rate of 4.8% for the mobile gamma cameras market during the 10 year period from 2018 to 2028. (pharmiweb.com)
- Technology continues to remain a major enabler of revenue growth in the global mobile gamma cameras market. (pharmiweb.com)
- Being a high value-low volume market, technology plays a vital role in the mobile gamma cameras market, where the technologically advanced products are priced at a premium. (pharmiweb.com)
- The development of solid state sensors is slowly replacing the photomultiplier tube and this represents the biggest technological development in the mobile gamma cameras market followed by miniaturisation. (pharmiweb.com)
- A notable trend being observed in the mobile gamma cameras market is the adoption shift towards dual head gamma cameras. (pharmiweb.com)
- Mobile gamma cameras market size was $58 million in 2018, and is projected to reach $82 million by 2026, growing at a CAGR of 4.7% from 2019 to 2026. (amarketplaceresearch.com)
- The single-head mobile gamma cameras segment accounted more than two-third of the total mobile gamma cameras market share in 2018. (amarketplaceresearch.com)
- The mobile gamma cameras market is expected to exhibit significant growth during the forecast period due to the technological advancements in expanding the imaging options and advantages of mobile gamma cameras over traditional gamma cameras. (amarketplaceresearch.com)
- However, decline in organ function, hair loss and skin burn of mobile gamma cameras and exposure to a lethal dose of gamma radiation are the factors that hinder the growth of the global mobile gamma cameras market. (amarketplaceresearch.com)
- North America was the leading revenue contributor to the global mobile gamma cameras market in 2018, and is expected to remain dominant throughout the forecast period. (amarketplaceresearch.com)
Called a scintillation1
- A gamma camera (γ-camera), also called a scintillation camera or Anger camera, is a device used to image gamma radiation emitting radioisotopes, a technique known as scintigraphy. (wikipedia.org)
Sensor12
- The malfunctions were often caused by mechanical problems and sensor failures in the heavy moving components of the cameras, according to ECRI, a not-for-profit organization that researches patient safety , quality and cost-effectiveness of care. (modernhealthcare.com)
- One way manufacturers can improve the quality of their tools is to perform camera sensor calibration . (gamma-sci.com)
- We also sell testing equipment for SWIR camera and sensor calibration, which helps improve facial recognition and gestures. (gamma-sci.com)
- With Nikon s highest resolution backside illuminated CMOS sensor and no optical low-pass filter, the Z 7II has achieved an overall DXOMark sensor score of 100*, the highest rating for full-frame digital cameras. (nikonusa.com)
- The FR7 features a back-illuminated 35 mm full-frame CMOS image sensor for the first time in a pan, tilt and zoom (PTZ) camera. (vistek.ca)
- A camera with the primary function to take photographs, either through film or a digital image sensor. (globalspec.com)
- A is a camera with the primary function of motion picture acquisition, either through film or a digital image sensor. (globalspec.com)
- The camera uses the same Super 35 Dual Gain Output (DGO) CMOS sensor found on the C300 Mark III , so if you're already familiar with the image quality of the C300 Mark III, then you're one step ahead of everyone else. (nofilmschool.com)
- The updated sensor design also yields 2x faster readout speeds than previous generations and, when coupled with the revised BIONZ XR image processor, greatly reduces rolling shutter by 3x and up to 8x faster processing and overall camera handling. (bhphotovideo.com)
- Using a proven sensor design, quick and precise AF performance, and smart operability, this camera is an ideal partner for capturing your everyday moments and once-in-a-lifetime experiences. (bhphotovideo.com)
- Harnessing an all-new APS-C sensor, the FX30 leverages a powerful imaging system that echoes more expensive cinema cameras. (videomaker.com)
- The Sony's FDR-AX700 camcorder shows off a new 4K-capable 1-inch CMOS sensor that can capture HDR footage with Hybrid Log-Gamma with an impressively realistic colour and brightness range. (digitalcamerawarehouse.com.au)
Mammography1
- This indicator measures the total number and density per million populations (females aged 50-60 years in case of Mammography) on the availability and use of 6 medical devices - Computed Tomography (CT) scanners, Magnetic Resonance Imaging (MRI) units, Gamma Cameras, Mammography, Angiography Units, and Lithotripters. (who.int)
Radionuclide3
- The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. (bvsalud.org)
- After the radionuclide has had time to reach the target tissue, images are taken with a gamma camera. (msdmanuals.com)
- Portable gamma cameras can provide radionuclide imaging at bedside. (msdmanuals.com)
Hybrid Log-Gamma1
- HLG (Hybrid Log-Gamma) support is also available, along with the BT.2020 color space, for recording within a wide color gamut and, in addition to S-Log2, S-Log3 is also available for producing an effective 14-stop dynamic range with increased grading control in the shadow to mid-tone regions of the image. (bhphotovideo.com)
Mirrorless cameras1
- Our mirrorless cameras are easy to carry and distil the best of Canon technologies into a compact body with interchangeable lenses. (canon.co.uk)
Radioactive1
- When a gamma photon leaves the patient (who has been injected with a radioactive pharmaceutical), it knocks an electron loose from an iodine atom in the crystal, and a faint flash of light is produced when the dislocated electron again finds a minimal energy state. (wikipedia.org)
Algorithms2
- Owing to advances in electronic components and software, modern mobile gamma cameras include advanced reconstruction algorithms and periodic updates that help boost scan speeds and image correction parameters. (pharmiweb.com)
- Dedicated algorithms for extraction of gamma-event's energy and position are under development. (infn.it)
Multi-camera setups2
- Combined with lightning fast hybrid autofocus with 273 phase detection AF points and a massive 84% frame coverage the AX700 can shoot anything and everything from home videos, family holidays, weddings and events to professional productions with multi-camera setups. (digitalcamerawarehouse.com.au)
- Discover how Canon's PTZ cameras, hardware controllers and apps can transform your remote, multi-camera setups. (canon.co.uk)
Correction2
- Siemens' Symbia T system combines a dual-head variable angle gamma camera with a two-slice CT scanner for attenuation correction (piece T or T2=2), advanced imaging of oncology and neurology (with a T6 slice CT 6 slice) or excellent oncology coverage (using a T16 CT 16 slice machine). (scanteb.com)
- Gamma Correction? (globalspec.com)
Acquires1
- The gantry is connected to a computer system that both controls the operation of the camera and acquires and stores images. (wikipedia.org)
20181
- Revenue from the sales of mobile gamma cameras is estimated to reach US$ 75.2 Mn by 2028 end, up from US$ 47.2 Mn in 2018. (pharmiweb.com)
Healthcare1
- Advancements in healthcare technology - particularly in the surgery category - have led to an increasing adoption of gamma cameras. (pharmiweb.com)
Camera's1
- The area that can be imaged accurately is limited because only signals near the gamma camera's face can be accurately localized. (msdmanuals.com)
Image8
- The company at present is developing the entire cameraitself but may partner with an existing gamma camera manufacturerto provide image processing computers and potentially sales anddistribution, according to Conwell. (diagnosticimaging.com)
- Dual head cameras increase total counts per stop, resulting in relatively lesser scan time and better image quality leading to enhanced accuracy in diagnosis. (pharmiweb.com)
- The Z 7II builds upon the professional imaging capabilities of the Z mirrorless platform with more image quality, more dynamic range, more speed, more workflow enhancements more of everything you want in an ultra-high performance camera. (nikonusa.com)
- Gamma cameras are an important imaging tool that doctors can use to help diagnose diseases, monitor heart function, and image other physiological processes. (medicalradiationinfo.org)
- Good travel cameras should be small, versatile, and offer good image quality. (dpreview.com)
- Cross-sectional images are produced for all axial locations (slices) covered by the field of view (FOV) of the gamma camera, resulting in a stack of contiguous 2-D images that form a 3-D image volume. (transectscience.org)
- Using a Zeiss Vario-Sonnar lens with a T* coating, the camera delivers excellent image quality with an incredibly versatile 12x optical zoom that allows you to capture a range of cinematic shots without needing to change lenses. (digitalcamerawarehouse.com.au)
- Our EOS range of DSLR cameras offers superb image quality, whatever your level of expertise. (canon.co.uk)
Scans3
- Gamma camera scans can be used for cardiac stress tests, brain imaging, bone scans and a number of other procedures. (modernhealthcare.com)
- Advanced gamma camera software also facilitates more personalised patient scans by tracking patient activity and performing appropriate scans. (pharmiweb.com)
- The gamma camera scans the kidney area. (healthline.com)
Nuclear medicine6
- ADAC Laboratories saw its stock go into the tank this month afterthe company projected third-quarter earnings to be sharply lowerdue to fierce competition in the domestic nuclear medicine market.Despite the slide, the Milpitas, CA-based vendor of gamma camerasand information systems is hoping to regain its footing with thehelp of several new products to be released in coming months. (diagnosticimaging.com)
- Elscint is suing ADAC in U.S. District Court in Baltimore,charging the company with infringing its nuclear medicine patents.Elscint filed two motions for preliminary injunction to stop ADACfrom manufacturing gamma cameras pending the outcome of a jurytrial. (diagnosticimaging.com)
- Digirad hopes to have a mock-up of the camera on display atthe Society of Nuclear Medicine meeting next month, with a work-in-progressprototype ready at this year's Radiological Society of North Americameeting. (diagnosticimaging.com)
- Siemens has provided several configurations of the Symbian nuclear medicine camera to meet the various requirements of nuclear medicine imaging. (scanteb.com)
- Molecular breast imaging (MBI) is a new nuclear medicine technique that utilizes small semiconductor-based gamma-cameras in a mammographic configuration to provide high-resolution functional images of the breast. (nih.gov)
- The gamma camera is the workhorse of nuclear medicine imaging. (springeropen.com)
Phantoms1
- The accuracy in determination of organ activity of Tc-99m was investigated, with activity estimated from gamma camera images of phantoms, using the, conjugate view method. (lu.se)
Imaging12
- At least five patients and hospital staffers have been injured in the past year because of malfunctions in gamma camera imaging devices, according to the ECRI Institute . (modernhealthcare.com)
- General Electric Co., Siemens and Royal Philips manufacture gamma camera imaging devices. (modernhealthcare.com)
- The imaging devices have sensors designed to prevent the gamma camera from getting too close. (modernhealthcare.com)
- For patient safety, Launders said, it's important for hospitals to make sure the imaging technologist is present for the full duration of a gamma camera imaging device study, which can take several hours. (modernhealthcare.com)
- San Diego-based start-up Digirad is getting attention frommedical imaging vendors trying to keep pace with GE Medical Systemsand its effort to build a solid-state gamma camera. (diagnosticimaging.com)
- Home / Radiation and Medicine / Medical Imaging / How does a gamma camera work? (medicalradiationinfo.org)
- The gamma camera is a machine that allows two-dimensional imaging of physical processes within the body using a radiopharmaceutical. (medicalradiationinfo.org)
- Proof of concept for low-dose molecular breast imaging with a dual-head CZT gamma camera. (umn.edu)
- Dive into the research topics of 'Proof of concept for low-dose molecular breast imaging with a dual-head CZT gamma camera. (umn.edu)
- Mobile gamma camera system is different from the conventional imaging systems as these are mobile units and can be used bed-side for the diagnosis, thereby eliminating the need to transport the patient. (amarketplaceresearch.com)
- Imaging of nuclear gamma-ray lines in the 1-10 MeV range is far from being established in both medical and physical applications. (elsevierpure.com)
- thus, imaging is limited by the thickness of the tissue and the range of the camera. (msdmanuals.com)
Customizable2
- Affording extensive customizable color and gamma controls, the ZV-E10 allows users to adjust the gamma, black level, knee, color level, and more. (bhphotovideo.com)
- The consistent, accurate and responsive autofocus system is fully customizable like other Sony cameras. (videomaker.com)
Workflow1
- It provides Custom and Cine EI modes that adjust camera operation to your workflow while maintaining consistency with other Cinema Line cameras. (vistek.ca)
Scintillator1
- A monolithic NaI(Tl) scintillator commonly used for conventional PMT-based gamma-cameras has been chosen for this study. (infn.it)
Advances1
- Advances in gamma camera technology and the emergence of a number of new theranostic radiopharmaceutical pairings have re-awakened interest in in vivo quantification with single-photon-emitting radionuclides. (springeropen.com)
Dual-head3
- The resulting product will enable ADAC to compete withan adjustable dual-head gamma camera at a lower price point thanthat presently commanded by Vertex. (diagnosticimaging.com)
- Based on product type, the market is categorized into single-head mobile gamma cameras, dual-head mobile gamma cameras, triple-head mobile gamma cameras and handheld mobile gamma camera. (amarketplaceresearch.com)
- Another important issue is the characteristic of the acquisition systems, considering that in this department there are four gamma cameras (three single-head, and one dual-head system) and one PET-CT scanner. (isixsigma.com)
Handheld2
- The in-camera VR allowed me to create tack-sharp, handheld images. (nikonusa.com)
- Built-in Optical SteadyShot with Active Mode minimises vibrations and camera shake when shooting handheld to deliver consistently smooth footage across the entire focal range. (digitalcamerawarehouse.com.au)
Sleek2
- The Gamma has a sleek top housing, containing the viewfinder in the middle and supporting a thin advance knob on the photographer's left and a release button on the right. (vintagesubminiaturecamera.com)
- Featuring a reliable design and apt performance to bolster creativity, the Sony a6400 is a sleek APS-C-format mirrorless camera featuring well-rounded photo and video capabilities. (bhphotovideo.com)
Prototype1
- Development of the next (engineering) prototype of SiPM's module for gamma-camera will be started soon. (infn.it)
Detectors2
- A gamma camera consists of one or more flat crystal planes (or detectors) optically coupled to an array of photomultiplier tubes in an assembly known as a "head", mounted on a gantry. (wikipedia.org)
- In particular, electronic detectors, such as CCDs (Charge Coupled Device, a type of camera), tend to get blinded by the electromagnetic radiation. (lu.se)
Lenses3
- Cameras lenses, on the other hand, need to be manually adjusted. (gamma-sci.com)
- If you want a compact camera that produces great quality photos without the hassle of changing lenses, there are plenty of choices available for every budget. (dpreview.com)
- Portable, lightweight lenses designed exclusively for EOS M cameras. (canon.co.uk)
Anger4
- 162 Hal Anger developed the first gamma camera in 1957. (wikipedia.org)
- His original design, frequently called the Anger camera, is still widely used today. (wikipedia.org)
- The Anger camera uses sets of vacuum tube photomultipliers (PMT). (wikipedia.org)
- Solid-state gamma cameras would replace the photomultipliertubes and scintillation crystals used in Anger-based systems,resulting in a truly digital gamma camera. (diagnosticimaging.com)
20191
- The item "Gamma Vintage SUBMINIATURE Camera made in occupied Japan Rare" is in sale since Friday, March 29, 2019. (vintagesubminiaturecamera.com)
Detection1
- This is attributed to upsurge in incidence of chronic diseases, rise in technological advancements of mobile gamma camera, its nature of non- invasive detection, availability of portable mobile gamma camera, and its high purchasing power. (amarketplaceresearch.com)
Radiation therapy1
- Compared with other types of radiation therapy, some believe that Gamma Knife radiosurgery, because it delivers pinpoint treatment, is less likely to damage nearby healthy tissue. (medlineplus.gov)
Images8
- Scintigraphy ("scint") is the use of gamma cameras to capture emitted radiation from internal radioisotopes to create two-dimensional images. (wikipedia.org)
- Both eyes and cameras manipulate light to interpret certain images. (gamma-sci.com)
- One of the most significant differences between our eyes and cameras is their ability to see images at a distance. (gamma-sci.com)
- Even though eyes are superior at manipulating images, camera developers should continue to make strides towards bridging the gap between the two. (gamma-sci.com)
- A single gamma camera head, mounted on a rotating gantry, is sufficient to acquire the data needed for tomographic images. (transectscience.org)
- The camera also works with a computer to create images. (healthline.com)
- Le but de ce travail etait d'identifier des images scintigraphiques modeles dans la mise en place d'une nouvelle strategie diagnostique des osteonecroses drepanocytaires (OND). (bvsalud.org)
- L'interpretation collegiale etait effectuee apres acquisition et traitement des images obtenues au moyen d'une gamma camera. (bvsalud.org)
Prompt1
- The group said such incidents can be prevented by regular camera maintenance, prompt response to recalls and attentive technologists. (modernhealthcare.com)
Versatile1
- Compact, lightweight and versatile videos cameras ideal for a host of specialist applications. (canon.co.uk)
Flexibility2
- However, given the low cost of a gamma camera and its additional flexibility compared to a dedicated PET scanner, this technique is useful where the expense and resource implications of a PET scanner cannot be justified. (wikipedia.org)
- Also, users can use the same S-Log2 Gamma Curve that is found on high end Sony Cinema cameras that squeezes up to 1300% more dynamic range into the video signal then traditional REC709, for increased post-production flexibility. (bhphotovideo.com)
Sensors2
- For example, we carry tools for spatial non-uniformity testing for array sensors that detect any pixel defects within the camera. (gamma-sci.com)
- To be clear, DGO is not to be confused with dual native ISO sensors found on cameras like the Panasonic EVA1 . (nofilmschool.com)
Incident1
- The crystal scintillates in response to incident gamma radiation. (wikipedia.org)
Temperature1
- The room needs to be of the correct humidity and temperature for the gamma camera so once this is met the camera will be installed. (aca-i.com)
Developments1
- Further, the numerous developments in radio nucleotides are anticipated to favour the adoption of solid state cameras and mobile gamma cameras. (pharmiweb.com)
Portable1
- Portable, all-in one PowerShot and IXUS cameras ranging from expert creative compacts to superzooms and easy point and shoot options. (canon.co.uk)
Nikon2
- For the first time in a Nikon camera, the Z 7II is powered by not one, but two Expeed 6 processing engines. (nikonusa.com)
- First Nikon camera with 4-axis vertical and horizontal tilting monitor. (nikonusa.com)