Medical Biophysics 3503G Lecture Notes - Lecture 6: Bar Chart
5 Aug 2016
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Reciever operating characteristic (roc) this tool is applied in any situation where you want ti study ability to detect something tool is easiest to understand by describing its procedure, there"s a multistep procedure to use this tool, procedure is: Select one condition to detect or classify (ex. patient has tumour or not) focus on detecting. To do experiment must image a large propulaion of indivieduals, including many individuals with/without disease (preselect individuals based on clinical criteria) Need a method to objectively or subjectively rate the image choose orginal parameter or criteria as basis for diagnosis. Subjective: n-pint scale indicating radiologists certainty about diagnosis (typically. Have 100 indivisuals, and rank on a 5 point scale. Pretty sure there is cancer based on images score 4. They"re confident it"s present they score a 5. Perform gold standard diagnostic test (biopsy, blood sample, ecg, etc) to obtain actual diagnosis for each patient.
