Greenberg S B, Crisci K L, Koenig P, Robinson B, Anisman P, Russo P
St. Christopher's Hospital for Children, Front Street at Erie Avenue, Philadelphia, PA 19134, USA.
Pediatr Radiol. 1997 Dec;27(12):932-5. doi: 10.1007/s002470050275.
Abnormalities of the pulmonary arteries following palliative or corrective surgery for tetralogy of Fallot (TOF) are common. Our purpose was to compare the usefulness of magnetic resonance imaging (MRI) and echocardiography in the post- operative evaluation of the pulmonary arteries in children with TOF.
Our hypothesis was that MRI is more sensitive than echocardiography in the detection of branch pulmonary artery abnormalities in children with TOF.
Pulmonary artery MRI and echocardiography were performed in 20 children following palliative and/or corrective surgery for TOF. MRI and echocardiography were compared in their ability to detect abnormalities of the pulmonary arteries. Angiographic or surgical correlation was available in 15 children. A perfusion scan for confirmation of pulmonary artery patency was available in one additional child.
Abnormalities of the branch pulmonary arteries identified by MRI included: absence or occlusion (2), focal stenosis (15), hypoplasia (2), aneurysm (1), and non-confluence (1). Echocardiography could not adequately visualize the right and left branch pulmonary arteries in eight and ten children, respectively. Echocardiography missed stenosis in 13 branch pulmonary arteries, patency of hypoplastic pulmonary arteries in two children, non-confluence of the pulmonary arteries in one child, and a left pulmonary artery aneurysm in one child. Abnormalities identified by MRI were confirmed in 16 children by angiography, surgery or perfusion scan.
MRI is more sensitive than echocardiography for the evaluation of branch pulmonary artery abnormalities in children following surgery for TOF.
法洛四联症（TOF）姑息性或矫正性手术后肺动脉异常很常见。我们的目的是比较磁共振成像（MRI）和超声心动图在TOF患儿肺动脉术后评估中的效用。
我们的假设是，在检测TOF患儿的分支肺动脉异常方面，MRI比超声心动图更敏感。
对20例接受TOF姑息性和/或矫正性手术后的患儿进行了肺动脉MRI和超声心动图检查。比较了MRI和超声心动图检测肺动脉异常的能力。15例患儿有血管造影或手术相关性资料。另有1例患儿进行了灌注扫描以确认肺动脉通畅情况。
MRI识别出的分支肺动脉异常包括：缺如或闭塞（2例）、局灶性狭窄（15例）、发育不全（2例）、动脉瘤（1例）和不融合（1例）。超声心动图分别在8例和10例患儿中无法充分显示左右分支肺动脉。超声心动图漏诊了13支分支肺动脉狭窄、2例发育不全肺动脉的通畅情况、1例肺动脉不融合以及1例左肺动脉动脉瘤。MRI识别出的异常在16例患儿中通过血管造影、手术或灌注扫描得到证实。
在评估TOF手术后患儿的分支肺动脉异常方面，MRI比超声心动图更敏感。
