Abstract
The objective of this study was to analyze radiation dose reduction and image quality by combining automated kV selection, tube current reduction, and iterative reconstruction. This was a retrospective analysis of the excretory phase of 55 patients with 2 computed tomography urography examinations: automated kV selection with tube current reduction ("low-dose protocol": with filtered back projection vs iterative reconstruction) and routine dose examinations. Image quality was analyzed blindly and in side-by-side analyses, in addition to quantitative measurements. Low-dose protocol median dose change was -40% (-10.7 to +12.9 mGy); 100 kV was autoselected in 44 (80%) of 55 patients (body mass index range, 19-36 kg/m) with mean dose reduction of 42.5%. Whereas up to 19% of low-dose images with filtered back projection were inferior by blinded review (P < 0.001), low-dose iterative reconstruction images were not rated inferior (P = 1.0). The combination of iterative reconstruction, automated kV selection, and tube current reduction results in radiation dose reduction with preserved image quality and diagnostic confidence.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 551-559 |
| Number of pages | 9 |
| Journal | Journal of Computer Assisted Tomography |
| Volume | 37 |
| Issue number | 4 |
| State | Published - Jul 2013 |
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ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
Cite this
Individualized kV selection and tube current reduction in excretory phase computed tomography urography : potential for radiation dose reduction and the contribution of iterative reconstruction to image quality. / Froemming, Adam T.; Kawashima, Akira; Takahashi, Naoki M; Hartman, Robert P.; Nathan, Mark A.; Carter, Rickey E.; Yu, Lifeng; Leng, Shuai; Kagoshima, Hiroki; McCollough, Cynthia H; Fletcher, Joel Garland.
In: Journal of Computer Assisted Tomography, Vol. 37, No. 4, 07.2013, p. 551-559.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Individualized kV selection and tube current reduction in excretory phase computed tomography urography
T2 - potential for radiation dose reduction and the contribution of iterative reconstruction to image quality.
AU - Froemming, Adam T.
AU - Kawashima, Akira
AU - Takahashi, Naoki M
AU - Hartman, Robert P.
AU - Nathan, Mark A.
AU - Carter, Rickey E.
AU - Yu, Lifeng
AU - Leng, Shuai
AU - Kagoshima, Hiroki
AU - McCollough, Cynthia H
AU - Fletcher, Joel Garland
PY - 2013/7
Y1 - 2013/7
N2 - The objective of this study was to analyze radiation dose reduction and image quality by combining automated kV selection, tube current reduction, and iterative reconstruction. This was a retrospective analysis of the excretory phase of 55 patients with 2 computed tomography urography examinations: automated kV selection with tube current reduction ("low-dose protocol": with filtered back projection vs iterative reconstruction) and routine dose examinations. Image quality was analyzed blindly and in side-by-side analyses, in addition to quantitative measurements. Low-dose protocol median dose change was -40% (-10.7 to +12.9 mGy); 100 kV was autoselected in 44 (80%) of 55 patients (body mass index range, 19-36 kg/m) with mean dose reduction of 42.5%. Whereas up to 19% of low-dose images with filtered back projection were inferior by blinded review (P < 0.001), low-dose iterative reconstruction images were not rated inferior (P = 1.0). The combination of iterative reconstruction, automated kV selection, and tube current reduction results in radiation dose reduction with preserved image quality and diagnostic confidence.
AB - The objective of this study was to analyze radiation dose reduction and image quality by combining automated kV selection, tube current reduction, and iterative reconstruction. This was a retrospective analysis of the excretory phase of 55 patients with 2 computed tomography urography examinations: automated kV selection with tube current reduction ("low-dose protocol": with filtered back projection vs iterative reconstruction) and routine dose examinations. Image quality was analyzed blindly and in side-by-side analyses, in addition to quantitative measurements. Low-dose protocol median dose change was -40% (-10.7 to +12.9 mGy); 100 kV was autoselected in 44 (80%) of 55 patients (body mass index range, 19-36 kg/m) with mean dose reduction of 42.5%. Whereas up to 19% of low-dose images with filtered back projection were inferior by blinded review (P < 0.001), low-dose iterative reconstruction images were not rated inferior (P = 1.0). The combination of iterative reconstruction, automated kV selection, and tube current reduction results in radiation dose reduction with preserved image quality and diagnostic confidence.
UR - http://www.scopus.com/inward/record.url?scp=84884325166&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84884325166&partnerID=8YFLogxK
M3 - Article
C2 - 23863531
AN - SCOPUS:84884325166
VL - 37
SP - 551
EP - 559
JO - Journal of Computer Assisted Tomography
JF - Journal of Computer Assisted Tomography
SN - 0363-8715
IS - 4
ER -