Source computed tomography scanner computed tomography tomography scanners x ray computed. Medical search. Frequent questions

Computed tomography requires radiographic projections from different angles. (hzdr.de)

When the X-ray source is rotated, the motion unit moves the X-ray apertures so that the X-ray beam can be adjusted to the minimum required radiation dose. (steinmeyer-mechatronik.de)
The new scanner also has a more powerful X-ray beam generator. (pleasefireme.com)
Summary: A CT scan technique that splits a full X-ray beam into thin beamlets can deliver the same quality of image at a much reduced radiation dose, according to a new study. (pleasefireme.com)
There are parallel x-ray beam scanners and fan x-ray beam scanners. (jgarantmc.com)
Parallel x-ray beam scanners can be categorized into first and second generation systems, similarly fan x-ray beam systems are categorized into third and fourth generation systems. (jgarantmc.com)
These different types of CT scanners have been named according to their method of data collection, as opposed to the shape or structure of the beam itself. (jgarantmc.com)
Pencil Beam Systems- The x-ray beam is collimated to a pencil and the effective pixel size becomes the size of the beam on the detector area. (jgarantmc.com)
A problem is that a CT scanner's tube - essentially its x-ray generating "light bulb" - creates a beam that is the x-ray version of white light, full of photons with different wavelengths that correspond to their energy. (medicaldesignbriefs.com)
After measurements, an X-ray beam quality correction factor $\left ({{k}}_{{Q},{{Q}}_{\mathbf{0}}}^{{SSD}}\right)$, backscatter factor (BSF) and conversion factor from incident air kerma to Hp(3) (C3) were determined. (bvsalud.org)
The high-performance ROFEX ( RO ssendorf F ast E lectron beam X -ray tomography)imaging technique has been developed at Helmholtz-Zentrum Dresden-Rossendorf for the noninvasive investigation of dynamic processes. (hzdr.de)
The fan-shaped x-ray beam must be tightly collimated. (mhmedical.com)
Once you are inside the scanner, the machine's x-ray beam rotates around you. (medlineplus.gov)

The gantry is the donut shaped part that houses the X-ray source. (sbghc.on.ca)
A motorized X-ray source rotates around the circular opening called the gantry, of a donut-shaped structure in the Computed Tomography scanner. (labsadvisor.com)

Medical practitioners use computed tomography to research structures within your body, usually CT scans. (verifiedmarketresearch.com)
There is no recommended limit on how many computed tomography (CT) scans you can have. (pleasefireme.com)
The approach suggests how the x-ray beams generated by CT can be measured in a way that allows scans from different devices to be usefully compared to one another. (medicaldesignbriefs.com)
Medical staff sometimes assists patients in the examination room during computed tomography (CT) scans for several purposes. (bvsalud.org)

Computed Tomography or Computerized tomography (CT) is a type of medical examination that makes use of X-rays and computer processing to create cross sectional images of the body. (labsadvisor.com)
The patient's table moves continually during the examination while the x-ray tube moves in continuous circles around the patient, projecting to stationary detectors. (mhmedical.com)

Medical imaging includes Computed Tomography (CT) Scanners, X-ray Imaging Systems, MRI Systems, Ultrasound Imaging Systems, Nuclear Imaging Systems, and Mammography Systems. (blueweaveconsulting.com)

Digital X-ray detectors are used in the CT scanners, which are located directly opposite to the X-ray source. (labsadvisor.com)
Most CT scanners available in clinics have 64 rows of X-ray detectors. (pleasefireme.com)
Siemens Healthcare pioneered the concept in 2005 when we released the first CT scanner with two X-ray tubes and two detectors. (appliedradiology.com)

Computed tomography is commonly referred to as a CT scan. (pleasefireme.com)
The following description refers to spiral/helical scanners, which are now most commonly used ( Fig. 4-1 ). (mhmedical.com)

The X-ray source rotates inside the gantry as the patient moves through. (sbghc.on.ca)
During a CT scan, the subject lies on a surface that slowly moves through the gantry while the X-ray source rotates around in the structure, shooting narrow beams of X-rays through a section of the subject's body. (labsadvisor.com)

CT uses ionizing radiation just as with a routine X-ray, while MRI uses a magnetic field. (sbghc.on.ca)
No. CT scanners use ionizing radiation and only the patient requiring the scan is permitted in the room. (sbghc.on.ca)
Unlike X-ray imaging, there is no ionizing radiation exposure allied with ultrasound imaging. (blueweaveconsulting.com)

The team's newest innovation combines this multiple-x-ray-source innovation with a principle called multiplexing, in which all the x-ray sources are turned on simultaneously to capture images from multiple views at the same time. (medgadget.com)

Combining the high spatial resolution of the QuantaMax photon-counting detector with our Dual Source temporal resolution enables the visualization of fine details for increased diagnostic confidence. (siemens-healthineers.com)
The implementation of Quantum Technology in a clinical routine CT scanner enables clinical breakthroughs not achievable with conventional CT technology and provides high diagnostic confidence to guide therapeutic decision-making. (siemens-healthineers.com)
Diagnostic imaging refers to numerous procedures for looking into the body to see the source of a health problem or harm and ensure a designation. (verifiedmarketresearch.com)

The scanner is comprised of a table and a gantry. (sbghc.on.ca)
The gantry contains the x-ray tube, its high-voltage generator, a collimator assembly, a detector array, and a data acquisition system. (mhmedical.com)

It incorporates innovative technologies designed to overcome the limitations of conventional CT scanners. (siemens-healthineers.com)
In the conventional step-and-shoot method used for the current CT scanners, you take one shot, and the first pixel stays on for one second. (medgadget.com)
Contrary to conventional tomography systems, the ROFEX systems do not achieve this by mechanical rotation of the object or source-detector-compound. (hzdr.de)
Common methods include conventional radiography, quantitative CT (QCT), single-photon absorptiometry (SPA), dual-photon absorptiometry (DPA), quantitative ultrasonography (QUS), and dual-energy x-ray absorptiometry (DEXA). (medscape.com)

Medical Radiation Technologists specially trained in the operation of CT scanners perform the procedure. (sbghc.on.ca)
For specific medical issues, you cannot operate without a computed tomography scanner. (steinmeyer-mechatronik.de)
This study aimed to discover the associations between the number of computed tomography (CT) scanners and the population, as well as number of medical resources to identify regional disparities in Japan. (bvsalud.org)
Medical institutions in Japan have installed 14,595 scanners. (bvsalud.org)
Our survey revealed an association between regional disparities in the number of CT scanners in Japan, the population, and number of medical resources. (bvsalud.org)

The new scanner has 320 detector rows, which allow imaging of a larger area of the body at one time. (pleasefireme.com)
The number of CT scanners was tabulated for each detector row of CT scanners for hospitals and clinics in each prefecture. (bvsalud.org)

CT scanner uses X-ray tools to generate a series of cross-sectional images of the body. (blueweaveconsulting.com)
Computed tomography (CT) merges x-ray technology with the computer to provide detailed digital cross-sectional images of the body relatively free from superimposition of the different tissues. (mhmedical.com)

NAEOTOM Alpha with Quantum Technology is the reinvention of computed tomography and offers a radically new way of generating clinical results. (siemens-healthineers.com)
Siemens Healthineers presents Somatom X. ceed1, a new high-resolution, high-speed CT (computed tomography) scanner engineered specifically for the most challenging clinical areas where time and precision are of essence. (pleasefireme.com)

The unique Dual Source technology enables a native temporal resolution of 66 ms and a scan speed of up to 74 cm/sec - mastering even the most challenging imaging tasks. (siemens-healthineers.com)
Using the nanotube x-ray technology, we show in this paper the feasibility of multiplexing - taking multiple images at the same time," Zhou said. (medgadget.com)
Spectral CT technology (also called dual-source/dual-energy CT) is another trend that is becoming more and more integrated into major CT vendors technologies. (pleasefireme.com)
Computed Tomography (CT) Scanning, also known as industrial CT scanning, is based on radiographic technology, which provides an ideal testing technique in order to locate and measure volumetric detail in three dimensions. (jgarantmc.com)
A new measurement approach proposed by scientists at the National Institute of Standards and Technology (NIST) could lead to a better way to calibrate computed tomography (CT) scanners, potentially streamlining patient treatment by improving communication among doctors. (medicaldesignbriefs.com)
The ROFEX technology is practically implemented in form of different scanners. (hzdr.de)

CT stands for Computed Tomography. (sbghc.on.ca)

In order to determine axial velocities of structures within the object of investigation the ROFEX systems comprise a second tomography plane, which is driven intermittently to the first one, if required. (hzdr.de)
Across the industry there are significant numbers of scanners in use today that were purchased in 2007 or earlier, and some of these systems simply cannot be upgraded. (appliedradiology.com)

The energy of each X-ray is measured, so spectral information is available for every scan, and the images are contrast-rich with high spatial resolution at the same dose. (siemens-healthineers.com)
The amount of radiation is greater than you would get during a plain X-ray because the CT scan gathers more detailed information. (labsadvisor.com)

Rotation speed The most recent CT scanners have a rotational speed under 300 milliseconds compared to the older models which are in the region of 400-500 milliseconds. (pleasefireme.com)

It is often used when the physician requires highly detailed images to study and diagnose the source of a problem, particularly on soft tissue. (blueweaveconsulting.com)
CT employs a high-intensity x-ray tube in order to provide uniform penetration of the tissues and reduce attenuation by bone relative to soft tissue. (mhmedical.com)

Computed tomography is necessary when a user is looking to evaluate, analyze or test the internal and/or external features of a component without destroying the object. (jgarantmc.com)
For this purpose, one ROFEX scanner has been installed at the vertical test section of the experimental facility TOPFLOW, where measurements at high pressure and high temperature are possible. (hzdr.de)

Modern "spiral" scanners can perform the exam without stopping. (medlineplus.gov)

X-ray machine uses X-rays, a kind of electromagnetic radiation, to generate images of the internal parts of the body without making any incisions. (blueweaveconsulting.com)
It is used to study for those parts of the body where CT scanners cannot generate sharp images. (blueweaveconsulting.com)
This aperture control sets completely new standards in computed tomography by providing very high- resolution and low-noise images at an outstanding low radiation dose. (steinmeyer-mechatronik.de)
The current CT scanners take images sequentially, which is slow and inefficient. (medgadget.com)
You still get all the images, only faster, and we need only about half of the original x-ray peak power," Zhou said. (medgadget.com)
In this study, Zhou and colleagues took images of a computer circuit board using a prototype multiplexing scanner, then compared the images to those generated by a traditional x-ray scanner. (medgadget.com)
The images showed little difference in resolution or clarity, but the prototype multiplexing scanner got the job done faster. (medgadget.com)
Computed Tomography (CT) Scanners are also significant, providing detailed cross-sectional images useful for detecting abnormalities in various body parts. (futuredatastats.com)
Dual-energy means that a CT technologist acquires images using two different X-ray energy settings, making it possible to observe different tissue characteristics. (appliedradiology.com)

CT scanners per 100,000 population were the highest in Kochi Prefecture, although the number of CT scanners in hospitals was the highest in Tokyo Prefecture. (bvsalud.org)

For this paper we built a prototype or demonstration scanner that gives a limited number of views, to image a simple object," Zhou said. (medgadget.com)
In this way, a focal spot moving along the target, i.e. an X-ray source rotating around the object, is generated. (hzdr.de)

Old X-ray machines are X-ray devices that use a hard and fast tube to direct X-rays to a selected location. (verifiedmarketresearch.com)
How fast does a CT scanner spin? (pleasefireme.com)
New CT scanners with fast acquisition speeds make exams easier for those patients who are unable to perform a breath hold. (appliedradiology.com)

Additionally, the number of hospitals with ≥ 200 beds and multidetector-row CT scanners with ≥ 64 rows were tabulated, and their ratios were calculated. (bvsalud.org)
Prefectures with a high proportion of hospitals with ≥ 200 beds also had a relatively high proportion of CT scanners with ≥ 64 rows (P (bvsalud.org)
A positive correlation was found between hospital size and number of CT scanners with ≥ 64 rows. (bvsalud.org)

Investigators at the University of North Carolina at Chapel Hill have developed a new method, with the help of nanotechnology, that might make traditional computed tomography a much faster imaging modality. (medgadget.com)

With multiplexing, we can have all the x-ray pixels on at the same time for maybe 2 seconds. (medgadget.com)
The first scanners had an image matrix of only 80 by 80 (6,400) data points, whereas modern scanners may have a matrix of 1,024 by 1,024 pixels, or 1,048,576 data points. (mhmedical.com)

It is a computerized X-ray machine that examines the body. (sbghc.on.ca)
How long does a CT scanner machine last? (pleasefireme.com)

Bone-density measurements can be performed by using X-ray methods, such as DEXA, QCT, and ultrasonic methods. (medscape.com)

Furthermore, parameters characterizing the analyzed process, such as interfacial area of a turbulent gas-liquid flow, can be extracted from the gained data from both tomography planes. (hzdr.de)

The first scanners were dedicated to scanning the head, but larger scanners, accommodating the whole body, were introduced in 1976 and became widely available during the 1980s. (mhmedical.com)

Vectron X-ray tube enables high image quality, even for patients with high BMI. (siemens-healthineers.com)
The scanner is often within the kind of a long tube with a table within the center wherever the patient will slide. (verifiedmarketresearch.com)
The NIST team had to overcome the uncertainties created by the tube's broad x-ray spectrum and tube voltage setting. (medicaldesignbriefs.com)

The standard affects CT scanners being used to image Medicare patients. (appliedradiology.com)

FAULHABER MICROMO brings together the highest quality motion technologies and value-added services, together with global engineering, sourcing, and manufacturing, to deliver top quality micro motion solutions. (medicaldesignbriefs.com)
Tomography of walnuts( Video1 , Video2 ) and peperoni as examples for dynamic quality control of agricultural products. (hzdr.de)

To summarize what is required, these scanners must include pediatric protocols, DICOM structured reporting, Dose Check and automated exposure control. (appliedradiology.com)

Most modern scanners use techniques to use less radiation. (medlineplus.gov)

SPECTRO XEPOS energy dispersive X-ray fluorescence (ED-XRF) spectrometer for analysis of major, minor, and trace element concentrations in bulk and powder samples. (uci.edu)

myExam Companion supports efficient scanner operation, consistent results and personalized patient care. (siemens-healthineers.com)
NIST scientists may have found a better way to calibrate CT scanners, potentially streamlining patient treatment by improving communication among doctors. (medicaldesignbriefs.com)

A VJ Technologies Veda CT 450 an x-ray computed tomography (CT) is being installed, which will be equipped with a 450 kV power source for macroCT imaging and a 250 kV power source for microCT imaging. (uci.edu)

CT scanners are faster and as a result, claustrophobia and movement are not as problematic as with the MRI scanner. (sbghc.on.ca)
Looking forward to the future of CT, radiologists should expect to see faster, more automated, and easier to use scanners. (pleasefireme.com)

The ability of x-ray to penetrate through varying densities allows CT inspection results to provide nondestructive physical characterization of internal features and structures of a part or component. (jgarantmc.com)

Sixteen-slice scanners are the current bread-and-butter of CT imaging. (pleasefireme.com)

What makes the multiplexing CT scanning possible is the novel multi-pixel x-ray source we developed and the ability to program each x-ray pixel electronically," Zhou said. (medgadget.com)

Projections from different angles1

Beam12

Donut shaped2

Scans4

Examination2

Ultrasound Imaging Systems1

Detectors3

Commonly2

Rotates2

Ionizing radiation3

Principle1

Diagnostic3

Gantry2

Conventional4

Medical5

Detector2

Cross-sectional images of the body2

Clinical2

Technology6

Stands1

Systems2

Scan2

Rotation1

Soft tissue2

Test2

Spiral1

Images9

Population1

Object2

Fast3

Rows3

Make1

Pixels2

Machine2

Measurements1

Area1

Body1

Tube3

Patients1

Quality2

Dose1

Modern scanners1

Energy1

Patient2

Technologies1

Faster2

Results1

Current1

Ability1