Whole-brain perfusion imaging with 320-MDCT scanner: Reducing radiation dose by increasing sampling interval.
OBJECTIVE
The purpose of this study was to investigate whether perfusion CT values obtained with a reduced-dose imaging protocol on a 320-MDCT scanner are similar to those obtained with a standard protocol.


CONCLUSIONS
Similar perfusion values at one-half the radiation dose can be obtained with the alternative algorithm used in this study.
Department of Medical Imaging, QE II Hospital, Halifax, NS, Canada. shivajai1@gmail.com
Jai Jai Shiva
JJ
Shankar
Cheemun
C
Lum
Mukul
M
Sharma
D000328:Adult; D000368:Aged; D000465:Algorithms; D001822:Body Burden; D001927:Brain Diseases / Q000000981:diagnostic imaging*; D002560:Cerebrovascular Circulation; D003287:Contrast Media; D005260:Female; D006801:Humans; D007472:Iohexol; D008297:Male; D008875:Middle Aged; D011829:Radiation Dosage; D011857:Radiographic Image Interpretation, Computer-Assisted; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*
D003287:Contrast Media; D007472:Iohexol