CT scans produce 2-dimensional images of a “slice” or section of the body, but the data can also be used to construct 3-dimensional images. A CT scan can be compared to looking at one slice of
Multiple slice CT scanners initially could take four separate images through each rotation, but technology has improved to the level that CT scanners can now take between 6 to 128 separate images in a singular rotation, meaning that it takes significantly less time to complete a CT scan.

High contrast of left ventricular myocardium achieved on Biograph mCT leads to sharp definition of ventricular walls and ischemic segments in an obese patient. Biograph mCT PET/CT. PET. Scan acquisition: 200 x 200 matrix, OSEM3D 4i24s. Scan time: 6 minutes. Injected dose: Fludeoxyglucose F 18 ( 18 F FDG) Injection [a] 20 mCi (740 MBq) CT.

A CT angio scan costs less than a cardiac cath; A CT angio can rule out the need for catheterization; Cons. CT angio requires the use of radiation; Data is still inconclusive as to whether or not CT angio is 100% as accurate as traditional catheterization; 64-Slice vs. 16-Slice. Pros. 64-slice scans are much faster

The accuracy of attenuation correction of SPECT scans with CT transmission measurements was measured using a dual-head scintillation camera (Millennium VG) equipped with a low-output, single-slice CT scanner (Hawkeye) manufactured by General Electric Healthcare. Six radionuclide–collimator combinations were evaluated as shown in Table 1.

128 Slice CT Scanners. 128-slice CT scanners are usually found in supporting specialty practices such as cardiac departments or research facilities, where the volume of patients is very high. These CT systems are able to scan the whole body in just seconds and produce outstanding 3D images of any organ.
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128 slice ct scan meaning