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TH‐C‐110‐03: Pitfalls and Remedies of MDCT Scanners as Quantitative Instruments
Author(s) -
Hsieh J
Publication year - 2011
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.3613536
Subject(s) - data acquisition , calibration , computer science , medical physics , focus (optics) , systems engineering , medicine , engineering , physics , optics , quantum mechanics , operating system
Objectives: CT HU accuracy is influenced by the fundamental properties of x‐ray physics, CT system calibration processes, data acquisition hardware and protocols, image reconstruction techniques, and patient preparation and handling. With a renewed and increased importance of quantitative imaging, this talk will provide an overview on this issue and focus on a few specific areas: scatter, beam‐hardening effect, CT components and system impact, and data acquisition protocols. Various techniques to reduce, correct, or avoid the pitfalls are presented. Current system limitations and new technologies to overcome the shortcomings will also be discussed.