CT for evaluation of urolithiasis: image quality of ultralow-dose (Sub mSv) CT with knowledge-based iterative reconstruction and diagnostic performance of low-dose CT with statistical iterative reconstruction
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| 008 | 210128e20151001xx s 000 0 eng | ||
| 024 | 7 | 0 | |a 10.1007/s00261-015-0411-2 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s00261-015-0411-2 | ||
| 245 | 0 | 0 | |a CT for evaluation of urolithiasis: image quality of ultralow-dose (Sub mSv) CT with knowledge-based iterative reconstruction and diagnostic performance of low-dose CT with statistical iterative reconstruction |h [Elektronische Daten] |c [Joonho Hur, Sung Park, Jong Lee, Hyun Park, In Chang, Jong Kwon, Yang Kim] |
| 520 | 3 | |a Purpose: To compare radiation dose and image quality in regular, low, and ultralow-dose CT protocols, and to evaluate diagnostic performance of low-dose CT for urolithiasis. Materials and methods: Sixty-five patients with suspected urolithiasis underwent three different scans under the regular, low, and ultralow-dose protocols. The regular dose scans were reconstructed using filtered back projection and the low-dose scans were reconstructed using a statistical iterative reconstruction. The ultralow-dose scans were reconstructed using both techniques in addition to a knowledge-based IR. Effective radiation doses were compared. Objective image noise was assessed by measuring standard deviation of HU and subjective image assessment was performed with a 3- or 5-point scale. Diagnostic performance of the low-dose image was evaluated, using the regular dose image as a standard reference and the interobserver agreement between two reviewers with different levels of experience was calculated. Results: The effective radiation dose was significantly different in each protocol (p<0.001) and estimated dose reduction of the low-dose and ultralow-dose protocols was 76.4% and 89.8%, respectively. The knowledge-based iterative reconstruction algorithm showed poorer subjective image quality than the regular and low-dose protocols, but it also had the least objective image noise. Overall, the low-dose image set showed a greater than 84% concordance rate and 100% in ureter stones larger than 3mm. Interobserver agreement was substantial (kappa value=0.61). Conclusions: The knowledge-based IR can provide a better quality image while reducing radiation exposure under the same protocol. Furthermore, the diagnostic performance of the low-dose CT protocol is comparable to the regular dose scan. | |
| 540 | |a Springer Science+Business Media New York, 2015 | ||
| 690 | 7 | |a Knowledge-based iterative reconstruction |2 nationallicence | |
| 690 | 7 | |a Model-based iterative reconstruction |2 nationallicence | |
| 690 | 7 | |a Statistical iterative reconstruction |2 nationallicence | |
| 690 | 7 | |a Filtered back projection |2 nationallicence | |
| 690 | 7 | |a Urolithiasis |2 nationallicence | |
| 690 | 7 | |a Low-dose computed tomography |2 nationallicence | |
| 690 | 7 | |a Radiation dosage |2 nationallicence | |
| 700 | 1 | |a Hur |D Joonho |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | |
| 700 | 1 | |a Park |D Sung |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | |
| 700 | 1 | |a Lee |D Jong |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | |
| 700 | 1 | |a Park |D Hyun |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | |
| 700 | 1 | |a Chang |D In |u Department of Urology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | |
| 700 | 1 | |a Kwon |D Jong |u Department of Urology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | |
| 700 | 1 | |a Kim |D Yang |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | |
| 773 | 0 | |t Abdominal Imaging |d Springer US; http://www.springer-ny.com |g 40/7(2015-10-01), 2432-2440 |x 0942-8925 |q 40:7<2432 |1 2015 |2 40 |o 261 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s00261-015-0411-2 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s00261-015-0411-2 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Hur |D Joonho |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Park |D Sung |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Lee |D Jong |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Park |D Hyun |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Chang |D In |u Department of Urology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Kwon |D Jong |u Department of Urology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Kim |D Yang |u Department of Radiology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, 156-755, Seoul, Korea |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Abdominal Imaging |d Springer US; http://www.springer-ny.com |g 40/7(2015-10-01), 2432-2440 |x 0942-8925 |q 40:7<2432 |1 2015 |2 40 |o 261 | ||