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Usefulness of the virtual monochromatic image in dual-energy spectral CT for decreasing renal cyst pseudoenhancement: a phantom study

DC FieldValueLanguage
dc.contributor.author김만득-
dc.contributor.author오영택-
dc.contributor.author정대철-
dc.contributor.author박미나-
dc.date.accessioned2014-12-19T16:24:00Z-
dc.date.available2014-12-19T16:24:00Z-
dc.date.issued2012-
dc.identifier.issn0361-803X-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/89453-
dc.description.abstractOBJECTIVE: 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.statementOfResponsibilityopen-
dc.relation.isPartOfAMERICAN JOURNAL OF ROENTGENOLOGY-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/2.0/kr/-
dc.subject.MESHContrast Media-
dc.subject.MESHDiagnosis, Differential-
dc.subject.MESHHumans-
dc.subject.MESHKidney Diseases, Cystic/diagnostic imaging*-
dc.subject.MESHPhantoms, Imaging-
dc.subject.MESHReproducibility of Results-
dc.subject.MESHTomography, X-Ray Computed/instrumentation-
dc.subject.MESHTomography, X-Ray Computed/methods*-
dc.titleUsefulness of the virtual monochromatic image in dual-energy spectral CT for decreasing renal cyst pseudoenhancement: a phantom study-
dc.typeArticle-
dc.contributor.collegeCollege of Medicine (의과대학)-
dc.contributor.departmentDept. of Radiology (영상의학)-
dc.contributor.googleauthorDae Chul Jung-
dc.contributor.googleauthorYoung Taik Oh-
dc.contributor.googleauthorMan Deuk Kim-
dc.contributor.googleauthorMina Park-
dc.identifier.doi23169724-
dc.admin.authorfalse-
dc.admin.mappingfalse-
dc.contributor.localIdA00420-
dc.contributor.localIdA02390-
dc.contributor.localIdA03592-
dc.relation.journalcodeJ00116-
dc.identifier.eissn1546-3141-
dc.identifier.pmid23169724-
dc.identifier.urlhttp://www.ajronline.org/doi/abs/10.2214/AJR.12.8660-
dc.subject.keyworddual-energy CT-
dc.subject.keywordMDCT-
dc.subject.keywordphantom study-
dc.subject.keywordpseudoenhancement-
dc.subject.keywordrenal cyst-
dc.contributor.alternativeNameKim, Man Deuk-
dc.contributor.alternativeNameOh, Young Taik-
dc.contributor.alternativeNameJung, Dae Chul-
dc.contributor.affiliatedAuthorKim, Man Deuk-
dc.contributor.affiliatedAuthorOh, Young Taik-
dc.contributor.affiliatedAuthorJung, Dae Chul-
dc.citation.volume199-
dc.citation.number6-
dc.citation.startPage1316-
dc.citation.endPage1319-
dc.identifier.bibliographicCitationAMERICAN JOURNAL OF ROENTGENOLOGY, Vol.199(6) : 1316-1319, 2012-
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers

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