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Establishing cutoff values for a quality assurance test using an ultrasound phantom in screening ultrasound examinations for hepatocellular carcinoma: an initial report of a nationwide survey in Korea

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dc.contributor.author정재준-
dc.date.accessioned2014-12-20T17:21:47Z-
dc.date.available2014-12-20T17:21:47Z-
dc.date.issued2011-
dc.identifier.issn0278-4297-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/94460-
dc.description.abstractOBJECTIVES: The purpose of this study was to evaluate the results of ultrasound (US) device testing using a US phantom and to determine cutoff values for phantom quality assurance tests in US examinations for the screening of hepatocellular carcinoma in Korea. METHODS: Ultrasound phantom images were acquired from the general hospitals in Korea that participated in the National Cancer Screening Program for hepatocellular carcinoma. Ultrasound images of the phantom were acquired with a 3.0- to 5.0-MHz convex transducer and evaluated in terms of the dead zone, vertical and horizontal measurement, axial and lateral resolution, sensitivity, and gray scale/dynamic range. Appropriate cutoff values were determined to guarantee minimal qualifications for the performance of the US scanners. RESULTS: Three hundred fifty-seven US scanners were tested using the following cutoff values: less than 2 mm for the dead zone, 5% discrepancy in the vertical measurement, 7.5% discrepancy in the horizontal measurement, all 11 identifiable line targets for axial and lateral resolution, more than 14 cm for sensitivity, and more than 4 cylindrical structures for gray scale/dynamic range. With these criteria, 283 US scanners (79.3%) passed the tests. The most common cause of disqualification was the dynamic range/gray scale. No statistical difference was observed in the disqualification rate between 3 groups based on different years of manufacture. CONCLUSIONS: Through this study, we have defined cutoff values for phantom images acquired with US scanners. These will be used in performing screening US examinations for hepatocellular carcinoma in Korea.-
dc.description.statementOfResponsibilityopen-
dc.format.extent1221~1229-
dc.relation.isPartOfJOURNAL OF ULTRASOUND IN MEDICINE-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/2.0/kr/-
dc.subject.MESHCarcinoma, Hepatocellular/diagnostic imaging*-
dc.subject.MESHHospitals, General-
dc.subject.MESHHumans-
dc.subject.MESHLiver Neoplasms/diagnostic imaging*-
dc.subject.MESHMass Screening-
dc.subject.MESHPhantoms, Imaging*-
dc.subject.MESHQuality Assurance, Health Care*-
dc.subject.MESHReproducibility of Results-
dc.subject.MESHRepublic of Korea-
dc.subject.MESHSensitivity and Specificity-
dc.subject.MESHUltrasonography/instrumentation*-
dc.titleEstablishing cutoff values for a quality assurance test using an ultrasound phantom in screening ultrasound examinations for hepatocellular carcinoma: an initial report of a nationwide survey in Korea-
dc.typeArticle-
dc.contributor.collegeCollege of Medicine (의과대학)-
dc.contributor.departmentDept. of Radiology (영상의학)-
dc.contributor.googleauthorJoon-Il Choi-
dc.contributor.googleauthorPyo Nyun Kim-
dc.contributor.googleauthorWoo Kyoung Jeong-
dc.contributor.googleauthorHyun Cheol Kim-
dc.contributor.googleauthorDal Mo Yang-
dc.contributor.googleauthorSang Hoon Cha-
dc.contributor.googleauthorJae-Joon Chung-
dc.identifier.doi10.7863/jum.2011.30.9.1221-
dc.admin.authorfalse-
dc.admin.mappingfalse-
dc.contributor.localIdA03712-
dc.relation.journalcodeJ01920-
dc.identifier.eissn1550-9613-
dc.identifier.pmid21876093-
dc.subject.keywordhepatocellular carcinoma-
dc.subject.keywordphantom-
dc.subject.keywordquality assurance-
dc.subject.keywordultrasound-
dc.contributor.alternativeNameChung, Jae Joon-
dc.contributor.affiliatedAuthorChung, Jae Joon-
dc.rights.accessRightsfree-
dc.citation.volume30-
dc.citation.number9-
dc.citation.startPage1221-
dc.citation.endPage1229-
dc.identifier.bibliographicCitationJOURNAL OF ULTRASOUND IN MEDICINE, Vol.30(9) : 1221-1229, 2011-
dc.identifier.rimsid27345-
dc.type.rimsART-
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers

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