Standard chest CT using combined automated tube potential selection and iterative reconstruction: image quality and radiation dose reduction.
OBJECTIVE
To evaluate the image quality and radiation dose reduction of chest computed tomography (CT) using combined automated tube potential selection (ATPS) and iterative reconstruction (IR).


METHODS
Image quality and radiation dose were compared between conventional contrast-enhanced chest CT using 120 kVp and filtered back projection (Protocol A) and CT using ATPS and IR (Protocol B) in 43 patients.


RESULTS
The effective radiation dose was 3.6 ± 0.4 mSv for Protocol A and 2.2 ± 0.6 mSv for Protocol B (mean dose reduction, 39.7%). Protocol B showed diagnostic image quality in all patients.


CONCLUSIONS
ATPS and IR allows for radiation dose reduction while maintaining diagnostic image quality.
Department of Radiology, School of Medicine, Ewha Womans University, Seoul, South Korea.
In Hye
IH
Chae
Department of Radiology, School of Medicine, Ewha Womans University, Seoul, South Korea. Electronic address: yookkim@ewha.ac.kr.
Yookyung
Y
Kim
Department of Radiology, School of Medicine, Ewha Womans University, Seoul, South Korea.
So Won
SW
Lee
Department of Radiology, School of Medicine, Ewha Womans University, Seoul, South Korea.
Ji Eun
JE
Park
Department of Radiology, School of Medicine, Ewha Womans University, Seoul, South Korea.
Sung Shine
SS
Shim
Division of Pulmonology in Department of Internal Medicine, School of Medicine, Ewha Womans University, Seoul, South Korea.
Jin Hwa
JH
Lee
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010282:Parathyroid Neoplasms / Q000000981:diagnostic imaging*; D011829:Radiation Dosage; D011832:Radiation Injuries / Q000517:prevention & control*; D011856:Radiographic Image Enhancement / Q000592:standards*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000379:methods*
Computed tomography (CT); Iterative reconstruction; Lung; Radiation dose