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| 研究生： |
林益全 Yi-Chuan Lin |
|---|---|
| 論文名稱： |
單點式磁振頻譜體素與脂肪抑制在標準腦之自動定位 Automatic localization of single voxel MRS and saturation band on template |
| 指導教授： |
林益如
Yi-Ru Lin |
| 口試委員: |
黃騰毅
Teng-Yi Huang 蔡尚岳 Shang-Yueh Tsai 劉益瑞 Yi-Jui Liu |
| 學位類別： |
碩士 Master |
| 系所名稱： |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
| 論文出版年： | 2018 |
| 畢業學年度： | 106 |
| 語文別： | 英文 |
| 論文頁數： | 42 |
| 中文關鍵詞： | 磁共振頻譜 、單點式頻譜 、功能性磁共振影像 、自動對位演算 、圖形使用者介面 、飽和脈衝 、腦部脂肪抑制 |
| 外文關鍵詞： | saturation pulse, brain fat suppression, Powell's method, Brodmann area |
| 相關次數： | 點閱：207 下載：1 |
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延續學長論文，自動化單點式磁共振頻譜定位技術的圖形介面工具
(105/06/29彭博煜)<1>，在<1>中增加新功能，脂肪飽和脈衝抑制，Fat-Sat脈衝是調諧到脂肪共振頻率的短時間RF脈衝。它們在MR成像序列開始之前立即應用。這些化學選擇性脈衝導致來自脂肪的信號被飽和，而水信號相對不受影響。 Fat-Sat技術是應用最廣泛的脂肪抑制方法。這種方法的普及源於這樣一個事實，即易於實現，通常是有效的，並且可以與幾乎任何成像序列結合使用。當定義VOI時，偵測是否太靠近頭殼，自動產生Outer volume suppression (OVS band)，省去手動調整會造成的誤差以及時間，透過VOI擴張與頭殼脂肪的交界，計算出OVS band的中心點，以及旋轉角度，進而構成。
以及開發一個自動化定義VOI，只要給予一個腦部區域，系統自動產生出一個符合的VOI，以節省手動時間，並透過計算放置在更精準的位置上，使用方法為Powell's method，以brodmann area作呈現。
Continuing the thesis paper, Toolbox for Automatic Localization of Volume of Interest in Single Voxel MRS (105/06/29 PO-YU PENG) <1>, adding a new function in <1>, fat saturation pulse suppression, Fat-Sat pulse is a short-time RF pulse tuned to the fat resonance frequency. They are applied immediately before the start of the MR imaging sequence. These chemoselective pulses cause the signal from the fat to be saturated while the water signal is relatively unaffected. Fat-Sat technology is the most widely used method of fat suppression. The popularity of this approach stems from the fact that it is easy to implement, is generally effective, and can be used in conjunction with almost any imaging sequence. When defining the VOI, it detects whether it is too close to the head casing, automatically generates Outer volume suppression (OVS band), eliminating the error and time caused by manual adjustment, and calculating the center of the OVS band through the boundary between the VOI expansion and the head shell fat. Point, and the angle of rotation, and then constitute.
And to develop an automated definition VOI, as long as a brain block is given, the system automatically generates a matching VOI to save manual time and put it in a more precise position by calculation. The method is Powell's method, which is made in brodmann area. Presented.
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