The Role of Magnetic Resonance Imaging in the Evaluation of Pulmonary Arterial Abnormalities

肺動脈異常之磁振造影診斷

吳定國(Ding-Kwo Wu) ； 劉金昌(Gin-Chung Liu) ； 吳俊仁(Jiunn-Ren Wu) ； 黃德揚(Teh-Yang Hwang) ； 林永哲(Young-Tso Lin)

《中華放射線醫學雜誌》 16卷1期 (1991/03) Pp. 43-54

摘要

本研究包含23位單一和複雜性肺動脈異常病人，年齡介於7個月至60歲間。利用磁振造影來診斷其解剖異常，並與血管攝影診斷做對照，3位未做血管攝影者，則與心臟超音波做對照。每位病人於心臟和大血管位置做多方向多切面T1-weighted自旋回訊影像，並於心底部和肺動脈做重疊橫切影像來評估肺動脈狹窄病人中央肺動脈之解剖與發育情形。10位病人接受開刀，其結果亦提供磁振造影診斷做對照。磁振造影診斷對肺動脈異常之解剖診斷與血管攝影（或心臟超音波）和開刀所見一致。在肺動脈狹窄的病人，磁振造影可以精確地顯示左，右肺動脈是否匯流及肺動脈的發育等兩項重要術前必知的要件。有兩位嚴重肺動脈狹窄病人，血管攝影無法顯示中央肺動脈解剖構造，藉助磁振造影，成功地施行分流手術。本研究結果顯示對肺動脈異常之診斷，磁振造影是一種有效可靠的非侵襲性診斷工具，可以輔助血管攝影之不足。此外，磁振造影也適合1.)。追蹤分流分術後，肺動脈變化2.)。評估分流手術是否暢通3.)。非侵襲性追蹤不開刀肺動脈異常病人。

關鍵字

肺動脈異常 ； 磁振造影 ； 血管攝影

並列摘要

Twenty-three patients with pulmonary arterial abnormalities underwent magnetic resonance (MR) imaging to evaluate the pulmonary arteries. MR findings were correlated with angiography in 20 patients and with echocardiography in 3 patients. Surgical results were available for confirmation in 10 patients. Results of MR finding were in agreement with angiography (or echocardiography) in all cases in the diagnosis of isolated and multiple pulmonary arterial abnormalities. In patients with obstructive lesion of right ventricular or pulmonary outflow tract, MR images, provided excellent demonstration of confluence and developmental status of central pulmonary arteries. Visualization of central pulmonary arteries was not accomplished in two adult patients even with wedge pulmonary vein contrast injections. In addition, MR imaging is also suitable for 1). monitoring the interval change of central pulmonary artery after shunt operations. 2). assessing the patency of surgical shunt. 3). non-invasive follow-up of pulmonary arterial abnormalities in whom surgery is not desired. Our results indicate that MR imaging is a useful and reliable non-invasive technique for identifying pulmonary arterial abnormalities. MR imaging may be the only method to visualize the central pulmonary arterial anatomy when angiogrpahic and echocardiographic results are compromised.

並列關鍵字

pulmonary arterial abnormality ； magnetic resonance imaging ； angiography