PMID: 11339745May 8, 2001Paper

Investigation of the slice sensitivity profile for step-and-shoot mode multi-slice computed tomography

Medical Physics
J Hsieh

Abstract

Multislice compound tomography (MCT) is one of the recent technology advancements in CT. Compared to single slice CT, MCT significantly improves examination time, x-ray tube efficiency, and contrast material utilization. Although the scan mode of MCT is predominately helical, step-and-shoot (axial) scans continue to be an important part of routine clinical protocols. In this paper, we present a detailed investigation on the slice sensitivity profile (SSP) of MCT in the step-and-shoot mode. Our investigation shows that, unlike single slice CT, the SSP for MCT exhibits multiple peaks and valleys resulting from intercell gaps between detector rows. To fully understand the characteristics of the SSP, we developed an analytical model to predict the behavior of MCT. We propose a simple experimental technique that can quickly and accurately measure SSP. The impact of the SSP on image artifacts and low contrast detectability is also investigated.

References

May 8, 1998·Medical Physics·K Taguchi, H Aradate
Feb 9, 1999·Medical Physics·H Hu
Dec 10, 1999·Medical Physics·C H McCollough, F E Zink
May 8, 2000·Medical Physics·M KachelriessW A Kalender
Dec 29, 2000·IEEE Transactions on Medical Imaging·J HsiehK F King

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Citations

Feb 25, 2003·European Journal of Radiology·Mathias Prokop
Aug 22, 2002·Academic Radiology·Peter Dawson
Mar 6, 2010·Nihon Hoshasen Gijutsu Gakkai zasshi·Toru HiranoTosiaki Miyati
Aug 27, 2011·Nihon Hoshasen Gijutsu Gakkai zasshi·Taiki ChonoKo Higuchi
Apr 19, 2005·Radiology·Thomas G FlohrU Joseph Schoepf
Apr 22, 2008·Physics in Medicine and Biology·M HamannB F Hutton

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