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.
128Slice and higher. These 128-slice or higher CT scanners are the top-of-the-line CT scanners you will find. Up to 320 slices, these machines can provide a full-body scan in mere seconds. Thanks to its incredible speed and accuracy, specialty practices generally invest in these costly machines.
Latest128-slice dual-source CT (DSCT) scanners offer prospective high-pitch spiral acquisition covering the heart during one single beat. We compared radiation dose and image quality from prospective 64-MSCT versus high-pitch spiral 128-slice DSCT scanning, as such data is lacking.
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.
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°.
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128 slice ct scanner vs 64 slice