64-slice multidetector row computed tomographic angiography of aortoiliac and lower extremity arteries: efficacy of test injection using a monitoring scan at knee level.
OBJECTIVE
To evaluate the efficacy of test injection technique using a monitoring scan at knee level for 64-slice multidetector row computed tomographic (MDCT) angiography of the abdominal and lower extremity arteries.


METHODS
The test injection technique using low-dose serial CT scan at knee level was performed for 58 patients. Time elapsed from contrast material injection to peak enhancement for the popliteal arteries was applied to scan delay for CT angiography. 64-Slice MDCT angiography of the abdominal and lower extremity arteries obtained with a table speed of 137.5 mm/s was evaluated.


RESULTS
The time to peak enhancement was unavailable in 2 cases. CT angiographic images were of good quality in 54 cases, whereas prominent enhancement of abdominal veins was observed in 2 cases.


CONCLUSIONS
The test injection using a monitoring scan at knee level was found to be useful for 64-slice MDCT angiography of the abdominal and lower extremity arteries.
Nakaya
Yasuhiro
Y
Department of Radiology, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan. y-nakaya@radiol.med.osaka-u.ac.jp
Kim
Tonsok
T
Hori
Masatoshi
M
Onishi
Hiromitsu
H
Maeda
Noboru
N
Higashihara
Hiroki
H
Tomoda
Kaname
K
Nakamura
Hironobu
H
D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography / Q000379:methods*; D001027:Aortography / Q000379:methods*; D003287:Contrast Media / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging*; D007267:Injections / Q000379:methods; D007717:Knee / Q000000981:diagnostic imaging*; D035002:Lower Extremity / Q000098:blood supply* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011856:Radiographic Image Enhancement / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*
D003287:Contrast Media