16 64, 128 and 256 Slice CT Scanners - Assessing the Costs vs. Benefits. Cost and Benefits of Various CT Scanner Slice Options. CT scanners can be of great benefit to most healthcare providers due to their ability to capture high-resolution diagnostic images at a fast rate ( the scanner's speed makes it a especially beneficial in the ER). Theresults showed that the 256-slice CT generates a smaller dose than the 16-slice CT in all examinations. For volumetric cine imaging, we found an acceptable scan time would be 6 s to 11 s, depending on examinations, if dose must be limited to the same values as routine examinations with a conventional multidetector CT. Forthe 4-slice example, this corresponds to a pitch of 3/4 = 0.75; for a 16-slice scanner, the pitch is 15/16 = 0.9375; and for a 64-slice scanner, the pitch is 63/64 = 0.9844. Note that such pitches move closer to 1 (smaller fraction of beam overlap) as the number of simultaneously acquired slices increases (more information regarding this
Comparedwith 16-slice and 64-slice CT, 128-slice CT has more detectors, which means larger volume coverage and shorter scan times. These advantages are useful for the application in CCTA.
Philipsbrilliance CT phantom with Philips ingenuity 128-slice low-dose CT scanner was chosen for this study. CT number linearity, CT number accuracy, slice thickness accuracy, high-contrast resolution, and low-contrast resolution were calculated and estimated computed tomography dose index volume (CTDI vol) for all the mAs values were recorded. CTscanners are often classified in terms of "number of slices", such that a "64-slice scanner" is regarded as superior to a "32-slice scanner". However, it is important to understand the distinction between "number of slices" and "number of detector rows". Comparedwith 16-slice and 64-slice CT, 128-slice CT has more detectors, which means larger volume coverage and shorter scan times. These advantages are useful for the application in CCTA. Compared with the other scanner systems 7,8,13, 128-slice single-source CT (128-MSCT) can use a low-tube current with acceptable images 14,15. First LSqEaWB.
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    • 128 slice ct scanner vs 64 slice