A study of optimization of MRI image examination in salivary gland diseases

涎腺及其周围病变是除影像学检查外，还需要大量信息才能正确诊断的疾病之一。图像检查的目的根据病变的种类而不同。例如，在肿瘤性质病变的情况下，检查病变的位置、不良程度以及位置与血管和神经系统的关系是重要的。另一方面，在炎症和自身免疫性疾病的情况下，唾液腺组织的变化及其功能成为检查的重点。检查磁共振成像的方法是必要的图像检查的疾病出现在唾液腺和周围疾病。我建议优化磁共振成像检查，使检查程序的一个障碍，出现在唾液腺和周围清楚。首先对每种无序的图像特征信息进行整理和整合。然后 ...更多信息 尽可能长时间的自动计算，如统计表现频率或疾病的符合率。这些工作的目的是帮助您的图像诊断。对于涎腺和周围出现的疾病，在MR图像检查之前进行超声检查，并判断肿瘤性质或炎症性质病变，并且炎症性质病变进行轴向图像（T1，T2，T2-脂肪），并在肿瘤病变的情况下添加冠状图像（T1），以优化图像检查的原则。在本研究中，我重点检查没有增加反转的造影剂。本研究以正常涎腺（腮腺89例，颌下腺82例）、已确诊的肿瘤性病变（41例）、炎症性病变（67例）和自身免疫性疾病为研究对象。通过添加T2脂肪抑制，可以更多地限制T2图像的高信号域的液体成分，并且对于针对该时间的疾病，有效性高。特别是对于干燥综合征和淋巴结转移病例，通过T2脂肪的检查精度很高。在MR涎腺造影中，虽然我可以从任何方向观察3D图像（MIP）是有利的，但当信号较弱时，对唾液腺的搜索是20 mm的1层图像。因此，我决定对肿瘤性病变使用3D图像（MIP），对炎性病变使用20 mm的1层图像。我考虑过使用扩散图像作为保持图像信息客观性的手段，但由于使用期限有限，所以我改变了策略。我考虑了图像因素，该因素似乎有助于从保存的图像中进行区分诊断。我表示唾液腺和病变部位的每个像素信号强度的图像的均匀性很不受窗宽或窗位等的影响。在干燥综合征中，我发现正常唾液腺和涎腺炎之间存在显著差异。我可以利用它作为鉴别诊断的指标。虽然有少数病例，但预期我们可以将其用于区分炎症淋巴结和转移淋巴结。少

The disorders of the salivary glands and its circumference are one of the diseases that we need a lot of information in addition to image examination to diagnose correctly. A purpose of image examination is different by the kind of a lesion. For one example, in case of tumor nature lesion, it is important to exam a position of a lesion, a bad degree and relation of a position with a blood vessel and the nervous system. For another, in case of inflammation and autoimmune disease, a change of a salivary glands organization and a function of that become important point of an examination. Examination of MR imaging is the method that is necessary for image examination of a disorder to appear in salivary glands and the circumference disorders. I suggest optimization of MR for image examination by making an examination procedure of a disorder to appear in salivary glands and the circumference clear. First arranging and integrate information of the image characteristic of each disorder. Then a … More utomating calculation such as statiscal manifestation frequency or conformity rate of a disorder so long as possible.The purpose of these works is helping your image diagnosis. For a disorder to appear in a salivary glands and the circumference, carried out sonography before MR image examination, and judged a tumor nature or inflammation nature lesion, and an inflammation nature lesion did an Axial image (T1, T2, T2-fat), and added a Coronal image (T1) on the occasion of tumorous lesion about optimization of image examination in a principle. In this study, I focus the examination that did not increase inversion of contrast medium. I took normal salivary glands (parotid gland: 89 glands, submandibular gland: 82 glands) and settled tumorous lesion (41 cases), inflammatory lesions (67 cases) and autoimmune disease of diagnosis as an object of study. It became possible to limit a liquid ingredient of high signal domain of T2 image more by adding T2-fat suppression and on a disorder intended for this time, the effectiveness was high. Especially, for Sjogren's syndrome and metastases to lymph nodes case the examination became possible that precision was high by T2-fat.On MR-sialography, while it was advantageous that I could observe form any kind of direction with 3D image (MIP), the search of the salivary glands was high of an image of 1 slice of 20mm when the signals were weak. As a result, I decide that I use 3D image (MIP) for the tumorous lesions and the image of 1 slice of 20mm for inflammatory lesions. I thought about the use of a diffusion image as means to keep objectivity in image information, but because a use period was limited, then I switched the policy. I considered the image factor that seems to be useful for discrimination diagnosis from a saved image. I expressed equality of the image of the each pixel signal strength of the salivary glands and lesion parts did not receive influence such as window width or level very much. In sjorgren's syndrome, I had a meaningful difference between normal salivary glands and sialoadenitis. I could take advantage of it as an index of a discrimination diagnosis. There were a few cases, but it was expected that we could use it for discrimination of an inflammatory lymph node and metastasis lymph node. Less