CLINICAL APPLICATION OF COLOR ANGIOCARDIOGRAM

概要

論文の詳細を見る
In order to assess angiocardiographic findings more precisely, a new method was developed for color display of conventional monochromatic angio cardiogram. The principles of the method are as follows: different light inten sities which compose the angiographic findings of a monochromatic film are converted into the corresponding 12 different colors through a video camera connected to a computer, and are projected on a cathode ray tube as a "color angiocardiogram". Thus, the difference in the density of the monochromatic silhouette was expressed as the difference in color. Angiocardiograms of 25 patients with various heart diseases were analyzed with the above method. Normal laminar flow of contrast medium in the aorta as well as turbulent blood flow in the patients with aortic valvular diseases were revealed satisfac torily with this method. The grade of regurgitation (e.g. mitral regurgitation) and intracardiac shunt (e.g. ventricular septal defect) were evaluated semi quantitatively, according to the color description of the distribution density of contrast medium. The method was also applied to coronary angiogram. The distribution of contrast medium in the ventricular muscle was analyzed, and abnormal distribution of contrast medium or defects due to the preced ing myocardial infarction could be shown up. We conclude that"color angio cardiogram" is an useful diagnostic method for cardiovascular diseases.
The Keio Journal of Medicineの論文