Ichida F, Hashimoto I, Miyazaki A, Tsubata S, Okada T, Murakami A, Nakajima A, Futatsuya R
Department of Pediatrics, Toyama Medical and Pharmaceutical University.
J Cardiol. 1992;22(4):669-78.
The morphology and circulation of the pulmonary arteries and shunt vessels were evaluated by magnetic resonance imaging (MRI) in 8 patients with cyanotic heart disease after a Blalock-Taussig shunt operation. Their ages ranged from one month to 17 years. MRI permitted assessment of the size and patency of the Blalock-Taussig shunts, as well as the size and morphology of the pulmonary arteries in all patients. Measurements of the vessel diameters on MRI correlated well with the angiographic measurements (main pulmonary artery, r = 0.98; right pulmonary artery, r = 0.98; left pulmonary artery, r = 0.98; and Blalock-Taussig shunt, r = 0.97). MRI successfully imaged 3 of 4 shunt obstructions and 3 of 4 pulmonary stenoses with high resolution. In assessing peripheral pulmonary stenosis or obstruction, MRI was superior to echocardiography, the latter being unable to image peripheral pulmonary arteries satisfactorily. We concluded that MRI is an excellent noninvasive method for serially evaluating the anatomy and function of Blalock-Taussig shunts and pulmonary arteries, which is particularly useful for children with cyanotic congenital heart disease.
通过磁共振成像（MRI）对8例法洛四联症患儿行Blalock-Taussig分流术后的肺动脉及分流血管的形态和血流情况进行了评估。患儿年龄从1个月至17岁不等。MRI可对所有患儿的Blalock-Taussig分流管的大小及通畅情况以及肺动脉的大小和形态进行评估。MRI测量的血管直径与血管造影测量结果具有良好的相关性（主肺动脉，r = 0.98；右肺动脉，r = 0.98；左肺动脉，r = 0.98；Blalock-Taussig分流管，r = 0.97）。MRI以高分辨率成功成像4例分流梗阻中的3例及4例肺动脉狭窄中的3例。在评估周围肺动脉狭窄或梗阻方面，MRI优于超声心动图，后者无法令人满意地显示周围肺动脉。我们得出结论，MRI是一种用于连续评估Blalock-Taussig分流管和肺动脉的解剖结构及功能的优秀无创方法，对患有青紫型先天性心脏病的儿童尤为有用。
