Comparison of angular and combined automatic tube current modulation techniques with constant tube current CT of the abdomen and pelvis.
OBJECTIVE
The objective of our study was to compare image quality and radiation dose associated with abdominopelvic CT using combined modulation, angular modulation, and constant tube current.


CONCLUSIONS
Compared with using a constant tube current to scan the abdomen and pelvis, the use of a combined modulation technique results in a substantial reduction (42-44%) in radiation dose with acceptable image noise and diagnostic acceptability.
Department of Radiology, Massachusetts General Hospital, White 270, Boston, MA 02114, USA.
Stefania
S
Rizzo
Mannudeep
M
Kalra
Bernhard
B
Schmidt
Tejas
T
Dalal
Christoph
C
Suess
Thomas
T
Flohr
Michael
M
Blake
Sanjay
S
Saini
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011829:Radiation Dosage; D011860:Radiography, Abdominal / Q000295:instrumentation*; D018709:Statistics, Nonparametric; D015898:Tomography Scanners, X-Ray Computed
D003287:Contrast Media