TY - GEN
T1 - Relations between accuracy of vessel measurement and physical image quality characteristics in multi-detector CT scanner
AU - Azuma, Yoshiharu
AU - Akagawa, T.
AU - Hamaguchi, H.
AU - Goto, S.
AU - Sumimoto, T.
PY - 2006
Y1 - 2006
N2 - The influence of image quality characteristics on the accuracy of vessel measurement was investigated using simple vascular models, the comparison of the profile curve of the cross section of the vascular models and physical image quality characteristics such as modulation transfer function (MTF), Wiener spectrum (WS) and contrast, with changing scan conditions. The profile curves in the section part that greatly influences the measurement accuracy of the vessel diameter has changed by x-ray tube voltage. The noise has increased evenly in all frequency band regions at the same time though the contrast rose in 2 and 4 mm vascular models. The change was not seen in MTF. It can be said that the decision of the scan parameters that raises the contrast and decreases the noise will improve the measurement accuracy of the vessel diameter.
AB - The influence of image quality characteristics on the accuracy of vessel measurement was investigated using simple vascular models, the comparison of the profile curve of the cross section of the vascular models and physical image quality characteristics such as modulation transfer function (MTF), Wiener spectrum (WS) and contrast, with changing scan conditions. The profile curves in the section part that greatly influences the measurement accuracy of the vessel diameter has changed by x-ray tube voltage. The noise has increased evenly in all frequency band regions at the same time though the contrast rose in 2 and 4 mm vascular models. The change was not seen in MTF. It can be said that the decision of the scan parameters that raises the contrast and decreases the noise will improve the measurement accuracy of the vessel diameter.
KW - Diameter of a vascular model
KW - Image quality characteristics
KW - Measurement accuracy of vessels
KW - Multi-detector CT scanner
KW - Profile curve
UR - http://www.scopus.com/inward/record.url?scp=36048996591&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=36048996591&partnerID=8YFLogxK
U2 - 10.1109/IMTC.2006.237101
DO - 10.1109/IMTC.2006.237101
M3 - Conference contribution
AN - SCOPUS:36048996591
SN - 0780393600
SN - 9780780393608
T3 - Conference Record - IEEE Instrumentation and Measurement Technology Conference
SP - 438
EP - 442
BT - IMTC'06 - Proceedings of the IEEE Instrumentation and Measurement Technology Conference
T2 - IMTC'06 - IEEE Instrumentation and Measurement Technology Conference
Y2 - 24 April 2006 through 27 April 2006
ER -