Axial scan. Medical search. Frequent questions

The introduction of computed tomography (CT) scanning and its wider use over time have additionally improved the physician's ability to appreciate nuances of paranasal sinus anatomy and accurate disease correlation. (medscape.com)
A computed tomography (CT) scan of the heart is an imaging method that uses x-rays to create detailed pictures of the heart and its blood vessels. (medlineplus.gov)
A computed tomography (CT) scan of the lumbar spine makes cross-sectional pictures of the lower back (lumbar spine). (medlineplus.gov)
Magnetic resonance imaging (MRI) and computed tomography (CT) scans (fig 2) demonstrated dilation of the entire length of the nasolacrimal bony canal with a soft tissue mass occupying the lumen of the nasolacrimal duct. (bmj.com)
This procedure is also called computed tomography, computerized tomography, or computerized axial tomography. (cancer.gov)
Although medulloblastoma has a highly characteristic appearance on computed tomography (CT) scanning, magnetic resonance imaging (MRI) is the preferred tool. (medscape.com)
In computed tomography (CT), which used to be called computed axial tomography (CAT), an x-ray source and x-ray detector rotate around a person. (msdmanuals.com)
All of these methods have become less useful with the advent of more sensitive and specific nonenhanced computed tomography (CT) scanning. (medscape.com)

No regional lymphadenopathy was present and PET (positron emission tomography) scan excluded the presence of metastases. (bmj.com)

D) Radiology services, including magnetic resonance imaging, computerized axial tomography scans, and ultrasound services. (cornell.edu)
Coronal, T1-weighted magnetic resonance imaging (MRI) scan in a patient with moderate Alzheimer disease. (medscape.com)
Axial, T2-weighted magnetic resonance imaging (MRI) scan reveals atrophic changes within bilateral temporal lobes with prominence of the sylvian fissures. (medscape.com)
Measurements were taken from axial-oblique magnetic resonance imaging (MRI) scans of a large historical population [54 females and 53 males at L3/L4, 50 females and 44 males at L4/L5, and 41 females and 35 males at L5/S1 levels]. (cdc.gov)

Axial spondyloarthritis (axSpA) encompasses both radiographic and non-radiographic axSpA. (bmj.com)

Regional tracer uptake in various anatomic structures can be visualized and relatively quantified in terms of injected positron emitter within a PET scan. (wikipedia.org)

We evaluated retrospective longitudinal T2-weighted MRI scans and balance data from 27 astronauts (thirteen ~2-week shuttle crew members and fourteen ~6-month International Space Station crew members) to determine spaceflight effects on brain structure, and whether any pre to postflight brain changes are associated with balance changes. (nature.com)
Brain scans were segmented into gray matter maps and normalized into MNI space using a stepwise approach through subject specific templates. (nature.com)
therefore, the optic nerve must cross through the retina en route to the brain. (wikipedia.org)
This scan provides a more-detailed x-ray of the body, usually in order to look for metastases in the brain, lungs and/or liver. (youngsurvival.org)
Two different datasets were collected, one consisting of brain scans while the other pelvic scans, which were used to train separate models, implementing their corresponding artefact augmentations. (springer.com)
We trained two models for multi-task MRI artefact correction of brain, and pelvic scans. (springer.com)

CT scans typically obtained for visualizing the paranasal sinus should include coronal and axial (3-mm) cross sections. (medscape.com)
For patients who may not tolerate the prone position required for coronal cuts, computer-generated reconstructed coronal views can be generated from thin axial sections. (medscape.com)
with fluid in maxillary sinus (MS). (Right) MRI scan head, coronal view. (bmj.com)

Familiarization with the radiologic landmarks and cross-sectional anatomy on patient CT scans, along with clinical correlation, can further enhance the reader's ability to understand sinus CT findings. (medscape.com)
A CAT scan is a specialized, nondestructive, x-ray examination that collects a sequence of cross sectional scans then uses a computer to generate a 2D or 3D dimensional image of the object. (mfa.org)

Scans show a midline cerebellar cystic lesion with an enhancing nodule (arrow) due to cerebellar hemangioblastoma. (medscape.com)

We report on the fabrication of a co-axial tip for application to scanning probe energy loss spectroscopy (SPELS). (birmingham.ac.uk)
Numerous studies are under way to identify specific imaging markers for different types of dementia, including cerebral volumetric measurements, diffusion imaging, spectroscopy, very-high-field MRI scans of senile plaques, and PET scan markers of senile plaques. (medscape.com)

Axial protocols that use overlapping slices are rare because they increase the radiation dose to the patient but typically do not provide additional diagnostic information. (radtechonduty.com)
There is some radiation exposure during a CT scan. (epnet.com)
A typical dose of FDG used in an oncological scan has an effective radiation dose of 7.6 mSv. (wikipedia.org)
CT scans expose you to more radiation than regular x-rays. (medlineplus.gov)

It is anticipated that such co-axial tips will present a significant advantage for future angular resolved SPELS measurements. (birmingham.ac.uk)

In this paper, we present a method termed oblique scanning laser microscopy (OSLM) to combine optical coherence tomography (OCT), for simultaneously volumetric structural and molecular imaging with cellular resolution in all three dimensions. (nature.com)
Conventional 3D laser scanning fluorescence microscopy requires repeated optical sectioning to create z-stacks in depth. (nature.com)
Early work on multi-modal 3D optical imaging is based on confocal laser scanning microscopy (LSM), where a confocal pinhole is applied for the depth sectioning and a stack of transverse images are taken for 3D reconstruction 1 . (nature.com)
Using atomically resolved scanning tunneling microscopy, we find that Sb preferentially incorporates into the surface layer of the {110}-terminated Zb segments rather than the {1120}-terminated Wz segments. (lu.se)

This method is also referred to as axial scanning, conventional scanning, serial scanning, or sequence scanning all imprecise term that tend to create confusion in the field. (radtechonduty.com)

These 18F-FDG PET scans for detecting cancer metastasis are the most common in standard medical care (representing 90% of current scans). (wikipedia.org)

Before the scan, you will either ingest a contrast dye and/or have it injected into a vein. (youngsurvival.org)
A liver scan involves having a contrast dye injected into the vein. (youngsurvival.org)

The use of intravenous contrast material just prior to scanning can help define soft tissue lesions and delineate vascularized structures, such as vascular tumors. (medscape.com)

Contrast-enhanced axial CT scan reveals clear distinction between normally enhanced ( arrows ) and unenhanced ( arrowheads ) collapsed small-bowel loops. (ajronline.org)

The ultrasonographic scan showed an increase of the mass size at the second and third exams and was followed by an arrest of the growth persisting for the rest of the pregnancy. (hindawi.com)

Axial slices lie parallel to one another. (radtechonduty.com)
Dual spot OCT using two parallel interferometers achieves 400kHz axial scan rate, almost 2X faster than previous 1050nm ophthalmic results and 20X faster than current commercial instruments. (elsevierpure.com)

Talk to your doctor about the risks and benefits of CT scan for you. (epnet.com)

Axial scans can be programmed to acquire data for contiguous slices, 'in which one slice abuts the next' or in a noncontiguous fashion, in which some areas of the patient are skipped between slices or slice data overlaps. (radtechonduty.com)
The quality of gamma-camera PET imaging is lower, and the scans take longer to acquire. (wikipedia.org)
Variable rate A/D optical clocking is used to acquire linear-in-k OCT fringe data at 100kHz axial scan rate with 5.3um axial resolution in tissue. (elsevierpure.com)

In early scanners the time for a complete cycle like: table movement to correct position, gantry rotation for scan acquisition, table movement to next position, allowed only a single scan to be acquired each time the patient held her breath. (radtechonduty.com)
Using machine learning to automatically measure axial vertebral rotation on radiographs in adolescents with idiopathic scoliosis. (cdc.gov)

Metabolic trapping of the radioactive glucose molecule allows the PET scan to be utilized. (wikipedia.org)
Before the scan, you will have some radioactive glucose called a "tracer" injected into a vein. (youngsurvival.org)

PET scanning with the tracer 18F-FDG is widely used in clinical oncology. (wikipedia.org)

We demonstrate ultrahigh speed swept source/Fourier domain ophthalmic OCT imaging using a short cavity swept laser at 100,000 - 400,000 axial scan rates. (elsevierpure.com)
Several design configurations illustrate tradeoffs in imaging speed, sensitivity, axial resolution, and imaging depth. (elsevierpure.com)
Fixed rate sampling at 1 GSPS achieves a 7.5mm imaging range in tissue with 6.0um axial resolution at 100kHz axial scan rate. (elsevierpure.com)
A 200kHz axial scan rate with 5.3um axial resolution over 4mm imaging range is achieved by buffering the laser sweep. (elsevierpure.com)
Here, the use of an obliquely scanning laser eliminates the z-stacking process, then allows highly efficient 3D OCT and fluorescence imaging by using only one raster scan. (nature.com)

PET scanning does this by using radiolabelled molecular probes that have different rates of uptake depending on the type and function of tissue involved. (wikipedia.org)

Both scans were performed at the same institution according to local clinical protocols. (snmjournals.org)
Initial management consisted of en una paciente con topical corticosteroids and oral antihistamines with little clinical response. (bvsalud.org)
18F-FDG-PET scans performed prior to date of consent, as part of a participant's routine clinical assessments, but within the 28 day screening window can be used to assess eligibility and are not required to be repeated unless specified by the Study Investigator. (who.int)

Grouping scans in this fashion decreases examination time and reduces slice misregistration. (radtechonduty.com)
The primary disadvantage to the axial method is that the cumulative effect of the pauses between each data acquisition adds to the total examination time. (radtechonduty.com)
The delay inherent in axial scan sequences decrease the likelihood that a patient will be able to hold his breath throughout the examination. (radtechonduty.com)

This is because of their axial nature like for example, is slice are perpendicular, not slanted, and the fact that the patient table remains stationary during data acquisition. (radtechonduty.com)
Scanners can also be programmed to repeat scans at the same slice location like no table incrementation. (radtechonduty.com)
For some CT scans, the table moves incrementally and stops when each scan (slice) is taken. (msdmanuals.com)

When a scan sequence is longer than a single breath hold, scans must be briefly suspended to give the patient time to exhale, take in a new breath, and hold it once again. (radtechonduty.com)

This is the practice of grouping more than one scan in a single breath hold. (radtechonduty.com)
The number of scans grouped together is dependent on the speed of the specific scanner used and on how long a patient can reasonably be expected to hold her breath. (radtechonduty.com)

The use of CT scanning combined with functional endoscopic sinus surgery (FESS) has empowered the modern sinus surgeon to treat patients more effectively, facilitating reduced morbidity and complications. (medscape.com)
A true technological and aesthetic revolution, the Minute Repeater Tri-Axial Tourbillon epitomises the contemporary approach to horological complications adopted by the Manufacture Girard-Perregaux. (girard-perregaux.com)

Newer scanners shortened the cycle time dramatically, allowing axial scans to be clustered. (radtechonduty.com)
The number of scan per cluster and the breathing time between clusters are programmable features and can be adjusted as specific patient conditions dictate. (radtechonduty.com)
Having many x-rays or CT scans over time may increase your risk for cancer. (medlineplus.gov)
A combination of the PET and CT Scans, performed at the same time, can present a more detailed image of the presence or extent of cancer in the body. (youngsurvival.org)
Abbreviated MRI, with its shorter scan time, might replace full-protocol MRI when screening MRI is considered for women with a personal history of breast cancer," Kim et al wrote. (auntminnie.com)

Contrast-enhanced CT scan demonstrates an opaque staghorn calculus filling the left renal collecting system. (medscape.com)

This method of scanning was used, in much the same fashion, by both 3rd and 4th generation scanners. (radtechonduty.com)
In all types of scanners using the method there is slight pause in scanning between data acquisitions, referred to as the interscan delay, as the table moves to the next location. (radtechonduty.com)
However, this method allows a low-cost on-site solution to institutions with low PET scanning demand. (wikipedia.org)

This applies in particular to photostat reproduction, copying, scanning or duplication of any kind, translation, preparation of microfilms, electronic data processing, and storage such as making this publication available on Intranet or Internet. (aofoundation.org)

Bone scans reveal if cancer has spread to the bones. (youngsurvival.org)
To conduct a bone scan, your healthcare provider injects dye, then waits a few hours for it to move through the bloodstream so it can be visible in the scan. (youngsurvival.org)

A computerized tomography (CT) scan was ordered by orthopaedic surgery, confirming a comminuted lateral navicular fracture with navicular medial dislocation on the talar. (hindawi.com)

The next-generation SPIM employs dual de-striping via pivot scanning which generates a homogenous illumination profile without compromising acquisition speed. (bruker.com)

PET scan images can be reconstructed using a CT scan performed using one scanner during the same session. (wikipedia.org)

For excellent patient education resources, see eMedicineHealth's patient education article CT Scan . (medscape.com)

If the axial scanning has some benefits on producing high quality images. (radtechonduty.com)
Inversely, axial scanning has also disadvantage on providing CT scan images. (radtechonduty.com)
On CT scans, posterior fossa images often are degraded by beam-hardening artifacts. (medscape.com)

Left) CT scan head, axial view. (bmj.com)
A) Precontrast and (B) postcontrast T1-weighted MRI scans show a 1.6-cm focal heterogeneous non-mass enhancement (arrow) in the left upper outer breast. (auntminnie.com)

We used 2D and 3D ultrasound, with the latter one giving us the opportunity to measure the axial dimension of the mass. (hindawi.com)
Diagnostic scans are performed to find out if you have MBC and to measure response to treatment or progression of metastatic tumors. (youngsurvival.org)

These results are based in part on mass scans using an i. (researchgate.net)

The co-axial tip shows comparable field emission characteristics to electrochemically etched tungsten tips. (birmingham.ac.uk)
C) Axial T2-weighted MRI scan shows no abnormal findings at the corresponding site (arrow). (auntminnie.com)

During a head scan, the table may be fitted with a special cradle that holds your head still. (epnet.com)
For other CT scans, the table moves continuously during scanning. (msdmanuals.com)

For these reasons, all current scanners offer the option of axial scanning. (radtechonduty.com)

A CT scan takes pictures of what's going on inside your body - and it doesn't hurt. (kidshealth.org)
This scan works by monitoring the use of glucose (a source of energy) throughout the body. (youngsurvival.org)

A CT scan is a machine that takes a series of x-rays to make a picture with many details. (epnet.com)

CT scans rapidly makes detailed pictures of the lower back. (medlineplus.gov)

Refractive error was measured annually by cycloplegic autorefraction and axial length by A-Scan ultrasonography. (nih.gov)

This test is called a coronary calcium scan when it is done to see if you have a buildup of calcium in your heart arteries. (medlineplus.gov)
The test is sometimes done in combination with scans of the aorta or pulmonary arteries to look for problems with those structures. (medlineplus.gov)
Don't blame yourself for not finding your recurrence early if you missed a scan or test or put off getting something checked out. (youngsurvival.org)

As in all radiologic surveys, sinus CT scans must be read with a systematic approach. (medscape.com)

In addition to reviewing the scan to determine the presence of disease, CT scans of the sinuses can also be reviewed to evaluate potential areas of occlusion and variations of the patient's sinus anatomy in the setting of surgical planning. (medscape.com)
Radiating intense originality and an equally powerful presence, the new Minute Repeater Tri-Axial Tourbillon asserts itself at first glance as a powerful historical and technical statement. (girard-perregaux.com)

About 10 to 15 minutes for the scan. (epnet.com)

Physicians who are interested in treating patients with sinus disease must be able to read and interpret sinus CT scans. (medscape.com)
It is a chronic inflammatory disease with a predilection for involving the axial skeleton. (bmj.com)

These scans look at the bones for "hot spots" that may reveal cancer. (youngsurvival.org)
The PET scan can sometimes find cancer that other tests miss. (youngsurvival.org)

Insectivorous Bat tomography (CAT) scan was normal. (cdc.gov)

Transaxial nonenhanced and contrast-enhanced CT scans through the cerebellum in a 34-year-old patient with a family history of VHL. (medscape.com)

However, it is also susceptible to false-positive biopsies, high cost, and long scan times. (auntminnie.com)

Anatomy1

Analytical, Diagnostic and Therapeutic Techniques and Equipment6

Computed tomography8

Positron emission t1

Magnetic4

Spondyloarthritis1

Emitter1

Brain6

CORONAL3

Cross-sectional2

Lesion1

Spectroscopy2

Radiation4

Measurements1

Microscopy4

Conventional1

Metastasis1

Contrast dye2

Delineate1

Reveals1

Ultrasonographic1

Parallel2

Risks1

Acquire3

Rotation2

Radioactive glucose2

Tracer1

Imaging5

Tissue1

Clinical3

Examination3

Slice3

Sequence1

Breath2

Complications2

Time5

Renal1

Method3

Data1

Bone2

Lateral1

Acquisition1

Scanner1

Article1

Images3

Left2

Measure2

Mass1

Shows2

Table2

Current1

Body2

Machine1

Pictures1

Length1

Test3

Approach1

Presence2

Minutes1

Disease2

Cancer2

Normal1

Patient1

High1