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
DC Field | Value | Language |
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dc.contributor.author | Hur, Joonho | - |
dc.contributor.author | Park, Sung Bin | - |
dc.contributor.author | Lee, Jong Beum | - |
dc.contributor.author | Park, Hyun Jeong | - |
dc.contributor.author | Chang, In Ho | - |
dc.contributor.author | Kwon, Jong Kyou | - |
dc.contributor.author | Kim, Yang Soo | - |
dc.date.available | 2019-03-08T16:39:03Z | - |
dc.date.issued | 2015-10 | - |
dc.identifier.issn | 0942-8925 | - |
dc.identifier.issn | 1432-0509 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/9034 | - |
dc.description.abstract | 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. 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. 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 3 mm. Interobserver agreement was substantial (kappa value = 0.61). 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. | - |
dc.format.extent | 9 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | SPRINGER | - |
dc.title | 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 | - |
dc.type | Article | - |
dc.identifier.doi | 10.1007/s00261-015-0411-2 | - |
dc.identifier.bibliographicCitation | ABDOMINAL IMAGING, v.40, no.7, pp 2432 - 2440 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000361835700037 | - |
dc.identifier.scopusid | 2-s2.0-84942504657 | - |
dc.citation.endPage | 2440 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 2432 | - |
dc.citation.title | ABDOMINAL IMAGING | - |
dc.citation.volume | 40 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordAuthor | Knowledge-based iterative reconstruction | - |
dc.subject.keywordAuthor | Model-based iterative reconstruction | - |
dc.subject.keywordAuthor | Statistical iterative reconstruction | - |
dc.subject.keywordAuthor | Filtered back projection | - |
dc.subject.keywordAuthor | Urolithiasis | - |
dc.subject.keywordAuthor | Low-dose computed tomography | - |
dc.subject.keywordAuthor | Radiation dosage | - |
dc.subject.keywordPlus | FILTERED BACK-PROJECTION | - |
dc.subject.keywordPlus | ACUTE FLANK PAIN | - |
dc.subject.keywordPlus | URETERAL CALCULI | - |
dc.subject.keywordPlus | ABDOMINAL CT | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | TOMOGRAPHY | - |
dc.subject.keywordPlus | PREVALENCE | - |
dc.subject.keywordPlus | STRATEGIES | - |
dc.subject.keywordPlus | CATALOG | - |
dc.relation.journalResearchArea | Gastroenterology & Hepatology | - |
dc.relation.journalResearchArea | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.relation.journalWebOfScienceCategory | Gastroenterology & Hepatology | - |
dc.relation.journalWebOfScienceCategory | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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