1 40 1 Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. URL Address <a href="http://doi.org/10.1097/RUQ.0b013e31814fb469" target="_blank" rel="noreferrer noopener">http://doi.org/10.1097/RUQ.0b013e31814fb469</a> Pages 199–202 Issue 3 Volume 23 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Duplex Doppler sonography of the carotid artery: velocity measurements in an artery with contralateral stenosis. Publisher An entity responsible for making the resource available Ultrasound quarterly Date A point or period of time associated with an event in the lifecycle of the resource 2007 2007-09 Subject The topic of the resource *Ultrasonography; Adult; Angiography; Blood Flow Velocity; Carotid Stenosis – Physiopathology; Carotid Stenosis – Radiography; Carotid Stenosis – Ultrasonography; Carotid Stenosis/*diagnostic imaging/physiopathology; Doppler; Duplex; Female; Human; Humans; Male; Retrospective Design; Retrospective Studies; Ultrasonography Creator An entity primarily responsible for making the resource Grajo Joseph R; Barr Richard G Description An account of the resource To determine if a significant contralateral stenosis affects interpretation tables of the ipsilateral internal carotid artery's degree of stenosis in duplex Doppler ultrasound, the records of 307 patients with carotid duplex ultrasound studies with an angiogram performed within 3 months without intervening intervention were retrospectively reviewed for peak systolic velocity, end-diastolic velocity, internal carotid artery-common carotid artery ratio, and angiographic degree of stenosis. Data were grouped into categories of degree of contralateral stenosis, and Pearson r correlation was used to determine significance of ipsilateral Doppler parameters to angiographic data. As the degree of contralateral stenosis increases, the correlation of ultrasound parameters becomes less significant. At a contralateral stenosis of less than 40%, the P value for peak systolic velocity was 0.0006; at a contralateral stenosis between 40% and 59%, the P value was 0.133; at a contralateral stenosis between 60% and 79%, the P value was 0.241; and at a contralateral stenosis between 80% and 99%, the P value was 0.439. Therefore, correlations are no longer significant at levels above 40% contralateral stenosis. The Doppler parameters were scattered in patients with greater than 40%contralateral stenosis, and "corrected" correlation tables could not be derived. As stenosis increases in the contralateral internal carotid artery, Doppler values become inaccurate in determining the degree of stenosis in the ipsilateral internal carotid artery, with the occurrence of both the overestimation and underestimation of the degree of stenosis. Identifier An unambiguous reference to the resource within a given context <a href="http://doi.org/10.1097/RUQ.0b013e31814fb469" target="_blank" rel="noreferrer noopener">10.1097/RUQ.0b013e31814fb469</a> Rights Information about rights held in and over the resource Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s). *Ultrasonography 2007 Adult Angiography Barr Richard G Blood Flow Velocity Carotid Stenosis – Physiopathology Carotid Stenosis – Radiography Carotid Stenosis – Ultrasonography Carotid Stenosis/*diagnostic imaging/physiopathology Doppler Duplex Female Grajo Joseph R Human Humans Male Retrospective Design Retrospective Studies Ultrasonography Ultrasound quarterly