{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T14:35:17Z","timestamp":1758638117847},"reference-count":7,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2005,12,2]],"date-time":"2005-12-02T00:00:00Z","timestamp":1133481600000},"content-version":"vor","delay-in-days":8677,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Clinical Ultrasound"],"published-print":{"date-parts":[[1982,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The peak frequency ratio (PFR) between the internal carotid and common carotid artery Fast Fourier Transform Spectral Analysis patterns has been used to identify patients with internal carotid artery stenosis. To evaluate further the accuracy of the PFR, we applied it to the spectral analysis data from 396 vessels whose sound signals were obtained with a Duplex scanner (pulsed Doppler) and 246 arteries whose audible flow data were generated by a continuous\u2010wave Doppler. The pulse Doppler with spectral analysis (PD\/SA) correctly identified 221\/254 (87%) of the vessels with less than 50% angiographic stenosis, 81\/100 (81%) of the arteries with 50\u201399% stenosis, and 35\/42 (83%) of the totally occluded internal carotid vessels for an overall accuracy of 85%. The continuous\u2010wave Doppler with spectral analysis (CW\/SA) did well in two categories but had an unacceptably high 47% false\u2010negative rate for arteries with 50\u201399% stenosis. The PFR when applied to PD\/SA test results is a useful parameter in screening patients with suspected internal carotid artery stenosis.<\/jats:p>","DOI":"10.1002\/jcu.1870100304","type":"journal-article","created":{"date-parts":[[2007,2,28]],"date-time":"2007-02-28T02:48:47Z","timestamp":1172630927000},"page":"109-112","source":"Crossref","is-referenced-by-count":15,"title":["Evaluation of the peak frequency ratio (PFR) measurement in the detection of internal carotid artery stenosis"],"prefix":"10.1002","volume":"10","author":[{"given":"Blair A.","family":"Keagy","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William F.","family":"Pharr","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Thomas","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Donald E.","family":"Bowles","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,12,2]]},"reference":[{"key":"e_1_2_1_2_2","first-page":"698","article-title":"Detection of carotid occlusive disease by ultrasonic imaging and pulsed Doppler spectrum analysis","volume":"86","author":"Blackshear WM","year":"1979","journal-title":"Surgery"},{"key":"e_1_2_1_3_2","volume-title":"Non Invasive Cardiovascular Diagnosis","author":"Zierler RE","year":"1981"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.STR.11.1.67"},{"key":"e_1_2_1_5_2","first-page":"77","article-title":"Flow disturbances following carotid endarterectomy","volume":"151","author":"Bodily KC","year":"1980","journal-title":"Surg Gynecol Obstet"},{"key":"e_1_2_1_6_2","first-page":"15","volume-title":"Arteriopathies Cerebrates Extracranniennes Asymptomatiques","author":"Barnes RW","year":"1980"},{"key":"e_1_2_1_7_2","first-page":"201","article-title":"A prospective evaluation of oculoplethysmography and carotid phonoangiography","volume":"148","author":"Blackshear WM","year":"1979","journal-title":"Surg Gynecol Obstet"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1001\/archsurg.1980.01380100045010"}],"container-title":["Journal of Clinical Ultrasound"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjcu.1870100304","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jcu.1870100304","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,12]],"date-time":"2023-11-12T04:35:42Z","timestamp":1699763742000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jcu.1870100304"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1982,3]]},"references-count":7,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1982,3]]}},"alternative-id":["10.1002\/jcu.1870100304"],"URL":"https:\/\/doi.org\/10.1002\/jcu.1870100304","archive":["Portico"],"relation":{},"ISSN":["0091-2751","1097-0096"],"issn-type":[{"value":"0091-2751","type":"print"},{"value":"1097-0096","type":"electronic"}],"subject":[],"published":{"date-parts":[[1982,3]]}}}