examinations with directional doppler ( dd ) with 10 mhz transducer , and pulsed doppler in combination with two-dimensional sector scanner with 3 mhz transducer ( duplex ) were carried out on 100 vessels in 51 patients with transitory ischemic attacks ( tia ) and minor stroke within the territory of the internal carotid artery before angiography .
C0007787
transitory ischemic
C0038454
stroke