128 slice ct scanner vs 64 slice
OverviewA 128-slice dual source CT scanner (Fig. 1) is equipped with two x-ray tubes and two corresponding detectors, mounted onto the rotating gantry with an angular offset of 94°.
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.
Whilesome experts have argued that a 16-slice system is sufficient from a practical standpoint, a closer examination of 32- and 64-slice systems offers new and superior clinical benefits over and above 16-slice technology, especially in imaging of the coronary arteries and in multiphase and functional studies.
Increasedspeed, detector size and sensitivity mean doctors can scan a heart, lung or brain with considerably less radiation than a scan with a 64-slice CT or a nuclear stress test. The 64-slice scanners required four to six heart beats to capture an image of the entire heart. The 256 can cover the distance in two heartbeats.
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128 slice ct scanner vs 64 slice