DEVELOPMENT OF VETERINARY DIAGNOSTIC IMAGING TECHNIQUES WITH PERMANENT MAGNETIC TYPE MRI

永磁式MRI兽医诊断成像技术的发展

• 批准号: 06556055
• 负责人: TAKEUCHI Akira
• 金额: $ 3.14万
• 依托单位: IWATE UNIVERSITY (1996)Yamaguchi University (1994-1995)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06556055/
• 关键词: VETERINARY DIAGNOSTIC IMAGING; PERMANENT MAGNETIC TYPE MRI; SYSTEMATIC TREE FOR DIAGNOSTIC IMAGING; COW AND HORSE; DOG; BRAIN AND SPINAL CORD; NASAL,PARANASAL AND ORAL CAVITY; JOINT; 鼻腔、副鼻腔、口腔; 獣医学; 画像診断; 診断システム; 神経疾患; 胸腹部疾患; 運動器疾患; 放射線学的評価

With major concern to its economical advantages and the easy opeating procedures, the permanent type Magnetic Resonance (MR) unit was studied for its possible use as a diagnostic imaging modality in veterinary medicine in spite of its lower magnetic intensity. Main results and conclusions which were obtained in this study are as follows ;1) Studies on desirable anesthesia, surface coils, restraint of animals, and imaging parameters have resulted in getting the clear images of most of normal tissues except the trunk of large animals.2) The diagnostic value of MR images of the brain and spinal lesions are thought to be the best of all obtained by current imaging modalities.3) MRI is thought to be excellent in the recognition of image characteristics of the nasal, paranasal and abdoominal lesions as well as X-CT.4) The most specific advantage of MRI is the possible recognition of three dimensional informaton regarding the lesional margin. This makes MRI to be a useful modality not only in the diagnosis but in the decision of the therapeutic strategy and evaluation of therapeutic effect and prognosis.5) The lesions in the tendon, the ligament and the articular cartilage, which are difficult to be diagnosed by X-ray, can be easily diagnosed with MRI by taking advantages of the possible selection of appropriate slice direction.6) These results in conjunction with the experiences in diagnostic imaging with other moalities by the members of this project team enabled us to produce the basic informations for the establishment of the systematic tree for the diagnostic imaging in veterinary medicine.From all resuts in this study, it is concluded that the diagnostic imaging procedures with permanent magnetic type MRI in small and large animals and its remarkable advantages in veterinary diagnosis have been clarified.

永磁型磁共振（MR）装置具有经济、操作方便等优点，但其磁场强度较低，因此，研究永磁型磁共振装置作为兽医诊断成像设备的可能性。本研究的主要结果和结论如下：1）研究理想的麻醉，表面线圈，动物的约束，2）MR图像对脑和脊柱病变的诊断价值是目前所有成像方法中最高的。3）MRI图像对脑和脊柱病变的诊断价值是目前最高的。MRI与X-CT一样，在显示鼻腔、鼻窦和腹部病变的影像学特征方面具有很好的优势。4）MRI最独特的优势是可以显示病变边缘的三维信息。这使得MRI不仅在诊断方面，而且在治疗策略的决定和治疗效果和预后的评估方面都是一种有用的方法。5）肌腱、韧带和关节软骨中的病变，这些病变很难被X线诊断，可以通过利用可能选择的适当切片方向的优势，利用MRI轻松诊断。6）结合本课题组成员在影像诊断方面的经验，为建立兽医影像诊断系统树提供了基础资料。阐明了永磁型MRI在小型和大型动物中的诊断成像程序及其在兽医诊断中的显著优势。

项目成果

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Taura Y.: "Histopathological findings on ulcerative lesions of carpal and tarsal joints in Japanese Black cattle." J.Vet.Med.Sci.58. 135-137 (1996)

Taura Y.：“日本黑牛腕关节和跗关节溃疡性病变的组织病理学发现。”

中間實徳: "「小動物の脊髄・椎間板疾患」診断と治療" インターズ-社, 300 (1996)

Minoru Nakama：“小动物脊髓和椎间盘疾病的诊断和治疗”Inters-sha，300（1996）

Nakaichi M.: "The three dimensional diagnostic imaging, 5.Liver and gall bladder (in Japanese)." CAP83. 5-9 (1996)

Nakaichi M.：“三维诊断成像，5.肝脏和胆囊（日语）。”

Nakaichi M.: "The three dimensional diagnostic imaging, 6.Spleen, uterus and overy (in Japanese)." CAP84. 5-9 (1996)

Nakaichi M.：“三维诊断成像，6.脾脏、子宫和卵巢（日语）。”