Computer-Aided Diagnosis for Detection of Lacunar Infarcts on MR Images: ROC Analysis of Radiologists' Performance.
The purpose of this study was to retrospectively evaluate radiologist performance in detection of lacunar infarcts on T- and T-weighted images, without and with the use of a computer-aided diagnosis (CAD) scheme. Thirty T-weighted and 30 T-weighted MR images obtained from 30 patients were used for a...
| Publicado en: | Journal of Digital Imaging Vol. 25; no. 4; pp. 497 - 504 |
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| Autores principales: | , , , , , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Springer Nature
Aug2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104470701&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104470701 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08971889 DOQ jtl: Journal of Digital Imaging issn: 08971889 maglogo: N pubinfo: dt: Aug2012 vid: 25 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104470701 77493908 10.1007/s10278-011-9444-4 NLM22215250 PMC3389095 104470701 ppf: 497 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Computer-Aided Diagnosis for Detection of Lacunar Infarcts on MR Images: ROC Analysis of Radiologists' Performance. aug: au: Uchiyama, Yoshikazu Asano, Takahiko Kato, Hiroki Hara, Takeshi Kanematsu, Masayuki Hoshi, Hiroaki Iwama, Toru Fujita, Hiroshi affil: Department of Computer and Control Engineering, Oita National College of Technology, 1666 Maki Oita City 870-0512 Japan sug: subj: Diagnosis, Computer Assisted Stroke Diagnosis Clinical Competence Magnetic Resonance Imaging Radiologists Retrospective Design ROC Curve P-Value T-Tests Analysis of Variance Comparative Studies Observational Methods Middle Age Aged Aged, 80 and Over Female Male Human Funding Source Middle Aged: 45-64 years Aged: 65+ years Aged, 80 & over Female Male ab: The purpose of this study was to retrospectively evaluate radiologist performance in detection of lacunar infarcts on T- and T-weighted images, without and with the use of a computer-aided diagnosis (CAD) scheme. Thirty T-weighted and 30 T-weighted MR images obtained from 30 patients were used for assessing observer performance. These images were acquired using the fast spin-echo sequence with a 1.5-T MR imaging scanner. The group included 15 patients (age range, 48-83 years; mean age, 67.2 years; 10 men and five women) with a lacunar infarct and 15 patients (age range, 39-76 years; mean age, 64.0 years; eight men and seven women) without lacunar infarcts. Nine radiologists participated in the study. The radiologists initially interpreted the T- and T-weighted images without and then with the use of CAD, which indicated their confidence levels regarding the presence (or absence) of lacunar infarcts and the most likely position of a lesion on each MR scan. The observers' performance without and with the computer output was evaluated by performing receiver operating characteristic analysis. For the nine radiologists, the mean area under the best-fit binormal receiver operating characteristic curve plotted for unit square values of radiologists who interpreted the images without and with the scheme were 0.891 and 0.937, respectively. The performance of the radiologists improved significantly when they used the computer output ( p = 0.032). The CAD scheme has potential to improve the accuracy of radiologists' performance in detection of lacunar infarcts. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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