Raffoul H, Diebold B, Guglielmi J P, Touati R, Forman J, Ourbak P, Peronneau P
Unité INSERM 256, Hopital Broussais, Paris, France.
Int J Card Imaging. 1987;2(3):145-50. doi: 10.1007/BF01784300.
Aortic insufficiency induces the development of a jet within the left ventricular outflow tract. The cross sectional area of this jet at its origin is the major determinant of the severity of the regurgitation. M mode Doppler imaging reportedly allows the measurement of jet diameter. This study was designed to evaluate the quantification of aortic regurgitation using a measurement of the jet diameter by M mode Doppler imaging. The left ventricular outflow tract of 32 patients was imaged using either a multigate pulsed Doppler velocimeter of color flow mapping system (Hewlett Packard). The jet diameter was compared to a 4 grade semiquantification derived from supravalvular aortography. Adequate imaging was obtained in the 32 patients. Four of them had no regurgitation: no diastolic flow image could be found during their Doppler investigation. A clear jet image was obtained in the 28 remaining patients. We found a close relationship between the jet diameter (jd in mm) and the angiographic grade (ag): jd = 2.4 + 6.1 ag, r = 0.88, the most significant differences being found between grade 0 and grade 1, and grade 1 and grade 2. In conclusion, direct M mode measurement of the regurgitant jet of aortic insufficiency at its origin offers an additional approach of the severity of the leak.
主动脉瓣关闭不全可导致左心室流出道内形成一股射流。该射流起始处的横截面积是反流严重程度的主要决定因素。据报道，M型多普勒成像可测量射流直径。本研究旨在评估通过M型多普勒成像测量射流直径来量化主动脉瓣反流的情况。使用彩色血流图系统（惠普）的多门脉冲多普勒测速仪对32例患者的左心室流出道进行成像。将射流直径与经主动脉瓣上造影得出的4级半定量结果进行比较。32例患者均获得了充分的成像。其中4例无反流：在他们的多普勒检查中未发现舒张期血流图像。其余28例患者获得了清晰的射流图像。我们发现射流直径（以毫米为单位的jd）与血管造影分级（ag）之间存在密切关系：jd = 2.4 + 6.1ag，r = 0.88，0级与1级、1级与2级之间的差异最为显著。总之，对主动脉瓣关闭不全反流射流起始处进行直接M型测量为评估反流严重程度提供了一种额外的方法。
