転移性骨髄腫瘍検査に対する低磁場MRI装置を用いたGradient Echo(GRE)Dixon画像の検討 : ダブルエコーシーケンスとシングルエコーシーケンスの比較(原著)

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We evaluated the gradient echo (GRE) Dixon method in metastatic bone tumors using a low-field MRI scanner (0.2 Tesla). This method is characterized by the double echo sequence of in-phase and opposed-phase. Studies were carried out on a phantom, 14 healthy volunteers, and clinical examples (33 vertebral bodies)using the T_1-weighted spin echo, T_2-weighted turbo spin echo, and GRE Dixon methods. Further, we obtained addition and subtraction images from the double echo sequence. In the clinical examples, the contrast-to-noise ratio (CNR) of the subtraction images (51.3±24.1) was significantly better than that of the T_1-SE images (6.7±3.1, p<0.0001 ). For the examination of metastatic bone marrow tumors using a low-field MRI scanner(0.2 Tesla), subtraction images are thought to be the most effective.
社団法人日本放射線技術学会の論文
2002-10-20