本文選題：磁共振擴散成像 + 體素內不相干運動��； 參考：《放射學實踐》2017年08期

【摘要】：胰腺為腹膜外器官,胰腺病變通常起病隱匿,疾病進展快且預后較差,早期診斷尤為重要,其診斷方法中MRI擴散加權成像常為首選檢查方法。目前的DWI技術主要有單指數(shù)模型、雙指數(shù)體素內不相干運動(IVIM)模型及拉伸指數(shù)模型(stretched exponential model)三種模型,單指數(shù)模型是基礎,雙指數(shù)模型及拉伸指數(shù)模型是在單指數(shù)模型的基礎上發(fā)展而來,三種模型的應用基礎及診斷價值有所不同,本文就多指數(shù)模態(tài)DWI技術的基本原理、臨床應用范圍及在胰腺方面的應用進展進行綜述。
[Abstract]:The pancreas is an extraperitoneal organ, and pancreatic lesions are usually hidden, the disease progresses quickly and the prognosis is poor. The early diagnosis is especially important. The MRI diffusion weighted imaging is the first choice in the diagnosis of pancreatic lesions. At present, there are three kinds of DWI models: single exponential model, double exponent incoherent motion model and stretching index model (stretched exponential model), which is based on single exponential model. The double exponential model and the stretching index model are developed on the basis of the single exponential model. The application basis and diagnostic value of the three models are different. In this paper, the basic principle of multi-exponential mode DWI technique is discussed. The scope of clinical application and progress in the application of pancreas were reviewed.
【作者單位】： 四川省醫(yī)學影像學重點實驗室川北醫(yī)學院附屬醫(yī)院放射科;成都市第六人民醫(yī)院;
【基金】：四川省教育廳基金項目(16ZA0228)
【分類號】：R445.2;R576

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