Ultra-high resolution flat-panel volume CT: fundamental principles, design architecture, and system characterization

European Radiology
Rajiv GuptaThomas Flohr

Abstract

Digital flat-panel-based volume CT (VCT) represents a unique design capable of ultra-high spatial resolution, direct volumetric imaging, and dynamic CT scanning. This innovation, when fully developed, has the promise of opening a unique window on human anatomy and physiology. For example, the volumetric coverage offered by this technology enables us to observe the perfusion of an entire organ, such as the brain, liver, or kidney, tomographically (e.g., after a transplant or ischemic event). By virtue of its higher resolution, one can directly visualize the trabecular structure of bone. This paper describes the basic design architecture of VCT. Three key technical challenges, viz., scatter correction, dynamic range extension, and temporal resolution improvement, must be addressed for successful implementation of a VCT scanner. How these issues are solved in a VCT prototype and the modifications necessary to enable ultra-high resolution volumetric scanning are described. The fundamental principles of scatter correction and dose reduction are illustrated with the help of an actual prototype. The image quality metrics of this prototype are characterized and compared with a multi-detector CT (MDCT).

References

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Citations

Apr 30, 2008·Skeletal Radiology·Benjamin ReichardtRajiv Gupta
Oct 4, 2011·Skeletal Radiology·Alessandro PedicelliLorenzo Bonomo
Jun 26, 2007·European Radiology·Willi A Kalender, Yiannis Kyriakou
Dec 7, 2007·European Radiology·Andreas H MahnkenJoachim E Wildberger
Apr 24, 2008·European Radiology·Soenke H BartlingFabian Kiessling
Jan 15, 2013·European Radiology·Jan KuntzSönke Bartling
Nov 13, 2010·JACC. Cardiovascular Imaging·Andrew C GlatzJonathan J Rome
Sep 2, 2008·Physics in Medicine and Biology·C T BadeaG A Johnson
Feb 10, 2010·Radiation Protection Dosimetry·Madan M Rehani
Nov 7, 2007·Investigative Radiology·Soenke H BartlingFabian Kiessling
Mar 24, 2009·Arteriosclerosis, Thrombosis, and Vascular Biology·James H F RuddZahi A Fayad
Jul 26, 2011·AJR. American Journal of Roentgenology·Jin IwazawaTakashi Mitani
Nov 13, 2008·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Rajiv GuptaThomas J Brady
Mar 8, 2014·The Indian Journal of Radiology & Imaging·Lakshminarayanan VidyaS Shanmugasundaram
Feb 11, 2014·Medical Physics·Thorsten HeußerMarc Kachelrieß
Dec 7, 2013·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·J Hazrati MarangalouB van Rietbergen
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