Determination of optimal imaging settings for urolithiasis CT using filtered back projection (FBP), statistical iterative reconstruction (IR) and knowledge-based iterative model reconstruction (IMR): a physical human phantom study
DC Field | Value | Language |
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dc.contributor.author | Choi, Se Young | - |
dc.contributor.author | Ahn, Seung H. | - |
dc.contributor.author | Choi, Jae D. | - |
dc.contributor.author | Kim, Jung H. | - |
dc.contributor.author | Lee, Byoung-Il | - |
dc.contributor.author | Kim, Jeong-In | - |
dc.contributor.author | Park, Sung Bin | - |
dc.date.available | 2019-03-08T15:57:10Z | - |
dc.date.issued | 2016-02 | - |
dc.identifier.issn | 0007-1285 | - |
dc.identifier.issn | 1748-880X | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/8649 | - |
dc.description.abstract | Objective: The purpose of this study was to compare CT image quality for evaluating urolithiasis using filtered back projection (FBP), statistical iterative reconstruction (IR) and knowledge-based iterative model reconstruction (IMR) according to various scan parameters and radiation doses. Methods: A 5x5x5 mm(3) uric acid stone was placed in a physical human phantom at the level of the pelvis. 3 tube voltages (120, 100 and 80kV) and 4 current-time products (100, 70, 30 and 15mAs) were implemented in 12 scans. Each scan was reconstructed with FBP, statistical IR (Levels 5-7) and knowledge-based IMR (soft-tissue Levels 1-3). The radiation dose, objective image quality and signal-to-noise ratio (SNR) were evaluated, and subjective assessments were performed. Results: The effective doses ranged from 0.095 to 2.621mSv. Knowledge-based IMR showed better objective image noise and SNR than did FBP and statistical IR. The subjective image noise of FBP was worse than that of statistical IR and knowledge-based IMR. The subjective assessment scores deteriorated after a break point of 100 kV and 30 mAs. Conclusion: At the setting of 100 kV and 30 mAs, the radiation dose can be decreased by approximately 84% while keeping the subjective image assessment. Advances in knowledge: Patients with urolithiasis can be evaluated with ultralow-dose non-enhanced CT using a knowledge-based IMR algorithm at a substantially reduced radiation dose with the imaging quality preserved, thereby minimizing the risks of radiation exposure while providing clinically relevant diagnostic benefits for patients. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | BRITISH INST RADIOLOGY | - |
dc.title | Determination of optimal imaging settings for urolithiasis CT using filtered back projection (FBP), statistical iterative reconstruction (IR) and knowledge-based iterative model reconstruction (IMR): a physical human phantom study | - |
dc.type | Article | - |
dc.identifier.doi | 10.1259/bjr.20150527 | - |
dc.identifier.bibliographicCitation | BRITISH JOURNAL OF RADIOLOGY, v.89, no.1058 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000368422100015 | - |
dc.identifier.scopusid | 2-s2.0-84957900011 | - |
dc.citation.number | 1058 | - |
dc.citation.title | BRITISH JOURNAL OF RADIOLOGY | - |
dc.citation.volume | 89 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordPlus | RADIATION-DOSE REDUCTION | - |
dc.subject.keywordPlus | ABDOMINAL CT | - |
dc.subject.keywordPlus | DIAGNOSTIC PERFORMANCE | - |
dc.subject.keywordPlus | PROSPECTIVE TRIAL | - |
dc.subject.keywordPlus | QUALITY | - |
dc.subject.keywordPlus | ALGORITHM | - |
dc.subject.keywordPlus | HYBRID | - |
dc.subject.keywordPlus | PROTOCOLS | - |
dc.subject.keywordPlus | STANDARD | - |
dc.subject.keywordPlus | NOISE | - |
dc.relation.journalResearchArea | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.relation.journalWebOfScienceCategory | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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