Abstract
Aim To determine the level of iterative reconstruction required to reduce increased image noise associated with low tube potential computed tomography (CT). Materials and methods Fifty patients underwent CT colonography with a supine scan at 120 kVp and a prone scan at 100 kVp with other scan parameters unchanged. Both scans were reconstructed with filtered back projection (FBP) and increasing levels of adaptive statistical iterative reconstruction (ASiR) at 30%, 60%, and 90%. Mean noise, soft tissue and tagged fluid attenuation, contrast, and contrast-to-noise ratio (CNR) were collected from reconstructions at both 120 and 100 kVp and compared using a generalised linear mixed model. Results Decreasing tube potential from 120 to 100 kVp significantly increased image noise by 30-34% and tagged fluid attenuation by 120 HU at all ASiR levels (p
| Original language | English (US) |
|---|---|
| Pages (from-to) | 981-988 |
| Number of pages | 8 |
| Journal | Clinical Radiology |
| Volume | 70 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 1 2015 |
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ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Medicine(all)
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CT colonography at low tube potential : Using iterative reconstruction to decrease noise. / Chang, K. J.; Heisler, M. A.; Mahesh, Mahadevappa; Baird, G. L.; Mayo-Smith, W. W.
In: Clinical Radiology, Vol. 70, No. 9, 01.09.2015, p. 981-988.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - CT colonography at low tube potential
T2 - Using iterative reconstruction to decrease noise
AU - Chang, K. J.
AU - Heisler, M. A.
AU - Mahesh, Mahadevappa
AU - Baird, G. L.
AU - Mayo-Smith, W. W.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - Aim To determine the level of iterative reconstruction required to reduce increased image noise associated with low tube potential computed tomography (CT). Materials and methods Fifty patients underwent CT colonography with a supine scan at 120 kVp and a prone scan at 100 kVp with other scan parameters unchanged. Both scans were reconstructed with filtered back projection (FBP) and increasing levels of adaptive statistical iterative reconstruction (ASiR) at 30%, 60%, and 90%. Mean noise, soft tissue and tagged fluid attenuation, contrast, and contrast-to-noise ratio (CNR) were collected from reconstructions at both 120 and 100 kVp and compared using a generalised linear mixed model. Results Decreasing tube potential from 120 to 100 kVp significantly increased image noise by 30-34% and tagged fluid attenuation by 120 HU at all ASiR levels (p
AB - Aim To determine the level of iterative reconstruction required to reduce increased image noise associated with low tube potential computed tomography (CT). Materials and methods Fifty patients underwent CT colonography with a supine scan at 120 kVp and a prone scan at 100 kVp with other scan parameters unchanged. Both scans were reconstructed with filtered back projection (FBP) and increasing levels of adaptive statistical iterative reconstruction (ASiR) at 30%, 60%, and 90%. Mean noise, soft tissue and tagged fluid attenuation, contrast, and contrast-to-noise ratio (CNR) were collected from reconstructions at both 120 and 100 kVp and compared using a generalised linear mixed model. Results Decreasing tube potential from 120 to 100 kVp significantly increased image noise by 30-34% and tagged fluid attenuation by 120 HU at all ASiR levels (p
UR - http://www.scopus.com/inward/record.url?scp=84938286498&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84938286498&partnerID=8YFLogxK
U2 - 10.1016/j.crad.2015.05.005
DO - 10.1016/j.crad.2015.05.005
M3 - Article
C2 - 26070401
AN - SCOPUS:84938286498
VL - 70
SP - 981
EP - 988
JO - Clinical Radiology
JF - Clinical Radiology
SN - 0009-9260
IS - 9
ER -