Hammerstein W, Rehorn W, Bischof G, Hennerici M
Klin Monbl Augenheilkd. 1981 Aug;179(2):97-9. doi: 10.1055/s-2008-1057270.
In unilateral stenosis of the internal carotid artery tonography shows the differences in amplitudes in a comparison of the two sides; in bilateral stenosis it shows markedly reduced amplitudes with an intermittent absence of the pulse amplitudes. When extrasystoles occur there are characteristic reductions in the amplitudes. As a result, this method of examination can be very important in the differential diagnosis of amaurosis fugax. Thanks to its simplicity and the fact that an ECG can be made simultaneously the method has a wide range of clinical applications.
在内颈动脉狭窄时，体积描记法可显示两侧对比时振幅的差异；双侧狭窄时，振幅明显降低，且脉搏振幅间歇性消失。出现早搏时，振幅会有特征性降低。因此，这种检查方法在黑矇性偏盲的鉴别诊断中可能非常重要。由于其操作简单，且可同时进行心电图检查，该方法具有广泛的临床应用。
