The International Consensus Diagnosis Criteria for autoimmune pancreatitis (AIP) has been published internationally for the diagnosis of AIP. However, since the revisions in 2006 and 2011, the Clinical Diagnostic Criteria for Autoimmune Pancreatitis 2018 have been published. The criteria were revised based the Clinical Diagnostic Criteria 2011, and included descriptions of characteristic imaging findings such as (1) pancreatic enlargement and (2) distinctive narrowing of the main pancreatic duct. In addition, pancreatic duct images obtained by magnetic resonance cholangiopancreatography as well as conventional endoscopic retrograde pancreatography were newly adopted. The guideline explains some characteristic imaging findings, but does not contain descriptions of the imaging methods, such as detailed imaging parameters and optimal timings of dynamic contrast-enhanced computed tomography/magnetic resonance imaging. It is a matter of concern that imaging methods can vary from hospital to hospital. Although other characteristic findings have been reported, these findings were not described in the guideline. The present paper describes the imaging methods for obtaining optimal images and the characteristic imaging findings with the aim of standardizing image quality and improving diagnostic accuracy when radiologists diagnose AIP in actual clinical settings.

中文翻译：

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自身免疫性胰腺炎的影像诊断指南。

自身免疫性胰腺炎 (AIP) 的国际共识诊断标准已在国际上发布，用于诊断 AIP。然而，自2006年和2011年修订后，2018年自身免疫性胰腺炎临床诊断标准已经发布。该标准根据 2011 年临床诊断标准进行了修订，包括对特征性影像学检查结果的描述，例如 (1) 胰腺增大和 (2) 主胰管明显变窄。此外，新采用磁共振胰胆管造影和常规内窥镜逆行胰造影获得的胰管图像。该指南解释了一些特征性的成像发现，但不包含对成像方法的描述，例如详细的成像参数和动态对比增强计算机断层扫描/磁共振成像的最佳时机。令人担忧的是，成像方法可能因医院而异。尽管已报告了其他特征性发现，但指南中并未描述这些发现。本文描述了获得最佳图像的成像方法和特征成像结果，目的是在放射科医生在实际临床环境中诊断 AIP 时标准化图像质量并提高诊断准确性。