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Doppler color flow |
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Doppler color flow [dop′lər] Etymology: Christian J. Doppler, Austrian physicist and mathematician, 1803-1853 an ultrasonic technique for detecting anatomic details by color coding of velocity shifts. In cardiography blood flowing in one direction appears red, and blood flowing in the opposite direction appears blue. The technique can also indicate the velocity of red blood corpuscles moving through the circulatory system, which makes it possible to quantify the flow, measure the pressures within the heart chambers, and calculate the stroke volume. In laparoscopy, Doppler color flow allows for rapid identification and differentiation of ducts and valves in the viscera, particularly in detection and diagnosis of pancreatic and liver tumors and colorectal liver metastases. See also Doppler ultrasonography. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Doppler color flow mapping,12,14-16 transesophageal or transthoracic echocardiography,16,18 contrast-enhanced electron beam tomography,18,19 magnetic resonance imaging,16,20 and radionuclide cardioangiograms13 have been proven to accurately locate the sites of origin and drainage of coronary artery fistulas. Diagnosis of total anomalous pulmonary venous drainage by Doppler color flow imaging. Evaluation of aortic insufficiency by Doppler color flow mapping. |
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