【摘 要】
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Objectives To obtain specific imaging findings of solitary necrotic nodule of the liver(SNNL)by using longer delayed contrastenhanced MRI Methods All of the included 16 patients received plain and con
【机 构】
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Qilu Hospital of Shandong University
【出 处】
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中华放射学学术大会2016、中华医学会第23次全国放射学学术大会暨中华医学会第24次全国影像技术学术大会
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Objectives To obtain specific imaging findings of solitary necrotic nodule of the liver(SNNL)by using longer delayed contrastenhanced MRI Methods All of the included 16 patients received plain and contrast-enhanced triphasic CT and multiphasic MRI.During the dynamic enhanced MRI examination,longer delayed scans were performed with delayed intervals of 5,10,15,30,60,and 120 minutes after contrast bolus injection.The CT and MRI features including number,location,morphology,size,density,signal intensity and enhancement degree of the lesions were evaluated by two experienced radiologists.Results A total of 16 lesions were identified in the 16 patients.4(25%)and 8(50%)lesions showed mild peripheral rim-like enhancement on conventional delayed phase CT and MRI.With the delayed time of contrast-enhanced MRI being prolonged,the enhancement degree of the tumor periphery/septa increased gradually.When the delayed time was 30 minutes,14 lesions(87.5%)reached to moderate to marked peripheral/septal hyperintensity with internal hypointensity.Conclusions Longer delayed MRI with a delayed time of at least 30 minutes plays an important role in the diagnosis of SNNL,which reveals the characteristic imaging feature of it as pronounced peripheral/septal enhancement with internal hypointensity.
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