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Usefulness of the virtual monochromatic image in dual-energy spectral CT for decreasing renal cyst pseudoenhancement: a phantom study
DC Field | Value | Language |
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dc.contributor.author | 김만득 | - |
dc.contributor.author | 오영택 | - |
dc.contributor.author | 정대철 | - |
dc.contributor.author | 박미나 | - |
dc.date.accessioned | 2014-12-19T16:24:00Z | - |
dc.date.available | 2014-12-19T16:24:00Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 0361-803X | - |
dc.identifier.uri | https://ir.ymlib.yonsei.ac.kr/handle/22282913/89453 | - |
dc.description.abstract | OBJECTIVE: The purpose of this study was to determine the effect that dual-energy spectral CT has on renal cyst pseudoenhancement with a renal cyst phantom. MATERIALS AND METHODS: Two renal compartments within a CT phantom were filled with 40- and 240-HU solutions of diluted contrast material, mimicking the nonenhanced phase and nephrographic phase of MDCT, respectively. A saline-filled tapering cylindric cyst model was used, simulating cysts of varying diameters (range, 0.7-3.0 cm) suspended in the renal compartments. The phantom was scanned using dual-energy CT (DECT) (80 and 140 kVp) and conventional, single-energy CT (120 kVp) with the same 64-MDCT scanner. Attenuation increase was measured for a cyst model within 40- and 240-HU dilutions. We compared the attenuation increase obtained on virtual monochromatic images from DECT with conventional, single-energy MDCT images using a paired Student t test. RESULTS: Pseudoenhancement occurred in the conventional single-energy CT acquisitions, with water attenuation increase of 42.44 ± 4.03 HU measured at 120 kVp. In virtual monochromatic images of DECT, we observed less pseudoenhancement with water attenuation increase of 21.51 ± 6.18 HU at 70 keV. Both acquisitions yielded a p value less than 0.0001. CONCLUSION: We achieved less pseudoenhancement of renal cysts with virtual monochromatic images of DECT compared with conventional single-energy CT. This method may be useful when an accurate differentiation between small renal cysts and solid masses is critical. | - |
dc.description.statementOfResponsibility | open | - |
dc.relation.isPartOf | AMERICAN JOURNAL OF ROENTGENOLOGY | - |
dc.rights | CC BY-NC-ND 2.0 KR | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/2.0/kr/ | - |
dc.subject.MESH | Contrast Media | - |
dc.subject.MESH | Diagnosis, Differential | - |
dc.subject.MESH | Humans | - |
dc.subject.MESH | Kidney Diseases, Cystic/diagnostic imaging* | - |
dc.subject.MESH | Phantoms, Imaging | - |
dc.subject.MESH | Reproducibility of Results | - |
dc.subject.MESH | Tomography, X-Ray Computed/instrumentation | - |
dc.subject.MESH | Tomography, X-Ray Computed/methods* | - |
dc.title | Usefulness of the virtual monochromatic image in dual-energy spectral CT for decreasing renal cyst pseudoenhancement: a phantom study | - |
dc.type | Article | - |
dc.contributor.college | College of Medicine (의과대학) | - |
dc.contributor.department | Dept. of Radiology (영상의학) | - |
dc.contributor.googleauthor | Dae Chul Jung | - |
dc.contributor.googleauthor | Young Taik Oh | - |
dc.contributor.googleauthor | Man Deuk Kim | - |
dc.contributor.googleauthor | Mina Park | - |
dc.identifier.doi | 23169724 | - |
dc.admin.author | false | - |
dc.admin.mapping | false | - |
dc.contributor.localId | A00420 | - |
dc.contributor.localId | A02390 | - |
dc.contributor.localId | A03592 | - |
dc.relation.journalcode | J00116 | - |
dc.identifier.eissn | 1546-3141 | - |
dc.identifier.pmid | 23169724 | - |
dc.identifier.url | http://www.ajronline.org/doi/abs/10.2214/AJR.12.8660 | - |
dc.subject.keyword | dual-energy CT | - |
dc.subject.keyword | MDCT | - |
dc.subject.keyword | phantom study | - |
dc.subject.keyword | pseudoenhancement | - |
dc.subject.keyword | renal cyst | - |
dc.contributor.alternativeName | Kim, Man Deuk | - |
dc.contributor.alternativeName | Oh, Young Taik | - |
dc.contributor.alternativeName | Jung, Dae Chul | - |
dc.contributor.affiliatedAuthor | Kim, Man Deuk | - |
dc.contributor.affiliatedAuthor | Oh, Young Taik | - |
dc.contributor.affiliatedAuthor | Jung, Dae Chul | - |
dc.citation.volume | 199 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 1316 | - |
dc.citation.endPage | 1319 | - |
dc.identifier.bibliographicCitation | AMERICAN JOURNAL OF ROENTGENOLOGY, Vol.199(6) : 1316-1319, 2012 | - |
dc.identifier.rimsid | 31778 | - |
dc.type.rims | ART | - |
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