Clinical value and the choice basis of image examination in salivary gland diseases -mainly on MRI image diagnosis -

唾液腺及其周围病变的影像学检查要点因病变类型而异。在肿瘤性病变的情况下，病变的恶性程度和定位以及与血管和神经的位置关系是重要的。在炎症和自身免疫性疾病的情况下，唾液腺的形态学变化和功能是重要的。本研究的目的是明确MRI和其他影像学检查的目的和选择程序，并通过收集每种疾病的图像信息来支持诊断成像。72例病例，其中病理组织学或临床诊断，进行了评价。其中良性涎腺肿瘤38例，恶性涎腺肿瘤8例，恶性淋巴瘤7例，恶性肿瘤6例，良性肿瘤5例，囊肿4例，炎性病变4例。超声心动图可用于鉴别肿瘤性病变和炎性疾病，并在首次检查时筛查涎腺及周围区域的疾病。由于唾液腺和周围组织之间的对比度降低，X线平片CT没有用。涎腺造影有助于了解病变的定位与腺体的关系，但对定性诊断无帮助。RI造影对腺淋巴瘤的诊断有一定的价值。MRI是最有用的检查方法，因为它能提供有关病变定位和定性诊断的信息，尽管MRI涎腺造影的图像需要改进，但它可能是涎腺造影的一种替代检查方法。由于每种疾病的病例数和检查病例数的不平衡，无法统计疾病的频率和适合率。

The important points in the imaging examination of disorders in the salivary gland and the surrounding area vary based on the types of lesions. In cases of tumorous lesions, malignancy and localization of lesions and positional relationship with the blood vessels and nerves are important. In cases of inflammation and autoimmune diseases, morphological changes in the salivary gland and the function are important. The purpose of this study was to define the purpose and selection procedures of MRI and other imaging examinations of each disease in the salivary gland and the surrounding area, and to support diagnostic imaging, by collecting image information of each disease.Seventy-two cases, in which histopathological or clinical diagnoses were established, were evaluated. The breakdown was benign salivary gland tumors (38), malignant salivary gland tumors (8), malignant lymphomas (7), malignant tumors (6), benign tumors (5), cysts (4), and inflammatory lesions (4).Echography is useful for differentiating tumorous lesions from inflammatory diseases, and is essential for screening disorders in the salivary gland and the surrounding area at the first examination. Plain X-CT was not useful due to decreased contrast between the salivary gland and the surrounding tissue. Sialography was useful for investigating the relationship between the localization of lesions and the glands ; however, it was not useful for qualitative diagnosis. RI scintigraphy was useful for the specific diagnosis of adenolymphoma. MRI was the most useful examination, because much information regarding the localization of lesions and qualitative diagnosis was obtained.Although improvement is required in the images of MR-sialography, this method may be an alternative examination for sialography. Statistical calculation of the frequency and the rate of fitness of diseases was not possible due to the imbalance of the case number of each disease and the number of examined cases.