New developments in observer performance methodology in medical imaging.
A common task in medical imaging is assessing whether a new imaging system, or a variant of an existing one, is an improvement over an existing imaging technology. Imaging systems are generally quite complex, consisting of several components-for example, image acquisition hardware, image processing...
| Publicado en: | Seminars in Nuclear Medicine Vol. 41; no. 6; pp. 401 - 419 |
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| Autores principales: | , |
| Formato: | research Journal Article |
| Publicado: |
W B Saunders
Nov2011
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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=104586702&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104586702 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00012998 10RZ jtl: Seminars in Nuclear Medicine issn: 00012998 maglogo: N pubinfo: dt: Nov2011 vid: 41 iid: 6 pid: 1351 pub: W B Saunders place: Philadelphia, Pennsylvania artinfo: ui: 104586702 NLM21978444 2011311186 10.1053/j.semnuclmed.2011.07.001 NLM21978444 PMC3196628 104586702 ppf: 401 ppct: 18 formats: tig: atl: New developments in observer performance methodology in medical imaging. aug: au: Chakraborty DP Chakraborty, Dev P affil: Department of Radiology, University of Pittsburgh, Pittsburgh, PA 15213, USA sug: subj: Diagnosis, Computer Assisted Methods Diagnostic Imaging Methods Image Processing, Computer Assisted Methods ROC Curve Pharmacokinetics False Negative Results False Positive Results Observer Bias Phantoms, Imaging Predictive Value of Tests Reproducibility of Results Task Performance and Analysis ab: A common task in medical imaging is assessing whether a new imaging system, or a variant of an existing one, is an improvement over an existing imaging technology. Imaging systems are generally quite complex, consisting of several components-for example, image acquisition hardware, image processing and display hardware and software, and image interpretation by radiologists- each of which can affect performance. Although it may appear odd to include the radiologist as a "component" of the imaging chain, because the radiologist's decision determines subsequent patient care, the effect of the human interpretation has to be included. Physical measurements such as modulation transfer function, signal-to-noise ratio, are useful for characterizing the nonhuman parts of the imaging chain under idealized and often unrealistic conditions, such as uniform background phantoms and target objects with sharp edges. Measuring the performance of the entire imaging chain, including the radiologist, and using real clinical images requires different methods that fall under the rubric of observer performance methods or "ROC" analysis, that involve collecting rating data on images. The purpose of this work is to review recent developments in this field, particularly with respect to the free-response method, where location information is also collected. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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