https://scholars.lib.ntu.edu.tw/handle/123456789/201297
Title: | 氫原子磁振造影及頻譜儀對股骨頭缺血性骨壞死的評估及預測(2/2) Pr oton MR Spectr oscopy of the Femor al Head - Evaluation of Patients at Risk for Avascular Necr osis |
Authors: | Shih, Ting-Fang Tiffany 施庭芳 |
Keywords: | Magnetic Resonance (MR);Proton MR Spectroscopy (MRS);Lipid and Water;Avascular Necrosis (AVN);Femoral Head (FH);Bone Marrow | Issue Date: | 31-Jan-2003 | Publisher: | 臺北市:國立臺灣大學醫學院放射線科 | Abstract: | To measure the lipid / water ratio of the femoral head from normal individuals and also, the non-diseased femoral head from patients with contralateral avascular necrosis (AVN) using proton magnetic resonance spectroscopy (MRS). Twenty-four femoral heads from 12 normal subjects and 15 non-diseased femoral heads from patients with contralateral AVN were included. Marrow composition was measured by using single-voxel stimulated-echo acquisition method (STEAM) (TR/TE = 5000/20 msec) with a voxel placed in the femoral head. The area under each resonance for lipid and water was calculated. The area of lipid (L) to area of water (W) ratio (L/W ratio) of the femoral head was significantly different between the patients with AVN on the contralateral side and normal individuals (P = 0.0048), this ratio revealing a greater value for those at risk of AVN. This detected difference appears to precede any other morphological change associated with AVN, such an increase in L/W ratio possibly suggesting the pathogenic route for AVN. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/25430 | Other Identifiers: | 902314B002412 | Rights: | 國立臺灣大學醫學院放射線科 |
Appears in Collections: | 醫學系 |
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902314B002412.pdf | 425.12 kB | Adobe PDF | View/Open |
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