Leading Concept in High | 合法醫療器材資訊網

2015年3月30日—LeadingConceptinHigh-EndCTImaging.Foralmostadecadenow,Siemens'DualSourceconcepthasspearheadedcomputedtomographyimaging ...

The other two concepts, wide detector coverage and Dual Source CT have been used much more extensively in clinical routine. The extent of clinical and scientific results that have been published on these two concepts therefore allows a reliable comparison. The initial motivation for wide detector coverage beyond the established 64-row detector design was to cover larger anatomies (e.g. whole organs or vascular structures) using a fast scan mode at high spatial resolution. Another field was dynamic studies such as perfusion or long-range angiographies.

Although the available wide detector designs enable coverage of organs, such as the heart, the concept itself had several drawbacks: In 2012, a paper concluded that “…for a 140 mm system, 24.5% of imaging volume exhibits more severe cone beam artifacts than a 64-slice system, which also poses a patient dose concern. In addition, this system may suffer from a 36% peak power (flux) loss, which is equivalent to about 20% image noise...