二維磁敏感加權成像對肝血管瘤之應用

Application of 2D Susceptibility Weighted Imaging Gradient-echo in Hepatic Hemangioma

陳文昌(Wen-Chang Chen) ； 林秋湧(Chiu-Yung Lin) ； 林偉銘(Wei-Ming Lin) ； 林松水(Song-Shei Lin)

《中華放射線技術學雜誌》 42卷1期 (2018/03) Pp. 29-35

摘要

肝血管瘤也是肝病中的一種，它是常見的良性腫瘤，尤以海綿狀血管瘤為最常見的肝臟血管畸形。磁振造影對於肝血管瘤的偵測具有高準確度，然而在不能注射釓的化合物顯影劑時，磁振造影常規序列影像將無法準確診斷出血管瘤，因此本研究的目的，就是要利用磁敏感加權影像對血管與鐵沉積的敏感度，來提高未注射顯影劑肝血管瘤之診斷。研究使用3.0 T磁振造影，共有50位高度疑似肝血管瘤患者，由二位腸胃放射科醫師分別對未注射顯影劑常規磁振造影、磁敏感加權成像與注射顯影劑後的動態三相式等3組影像，進行判別診斷，其敏感度分別為42%、91%及97%。磁振造影之磁敏感加權成像技術的出現和持續發展大大提高了肝血管瘤的檢出率。

關鍵字

肝血管瘤 ； 磁敏感加權成像 ； 敏感度

並列摘要

Hepatic hemangioma, a common benign tumor, was also a liver disease. Clinically, cavernous hemangioma was the most common hepatic vascular malformation. Magnetic resonance imaging (MRI) has high accuracy for the detection of hepatic hemangiomas. However, in the absence of the injection of gadolinium, non-contrast-enhanced conventional MRI will not be able to accurately diagnose hepatic hemangiomas. In order to increase the non-contrast diagnostic accuracy of hepatic hemangiomas, the purpose of this study was to compare the susceptibility weighted imaging (SWI) to conventional non-contrast and tri-phase contrast enhancement liver MRI. Total of fifty cases with highly suspected hepatic hemangioma were recruited and examined by 3.0T MRI technology in this study. For qualitative analysis, the hepatic hemangioma was assessed for diagnosis sensitivity. The three groups of image were evaluated by two gastrointestinal radiologists. The diagnosis sensitivity of non-contrast-enhanced conventional MRI, SWI, and tri-phase injection contrast-enhanced MRI, were 42%, 91%, and 97%, respectively. The emergence and continuous development of MRI SWI technology has greatly improved the detection rate of hepatic hemangioma.

並列關鍵字

hepatic hemangioma ； susceptibility weighted imaging ； sensitivity