低磁場MRI装置を用いた転移性骨髄腫瘍検査におけるopposed-phase imageの検討

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This study examined the spine to determine the usefulness of opposed-phase images that reflect the normal bone marrow signal to a low signal intensity for the purpose of increasing the unusual signal intensity that was observed with the bone metastasis focus using a low-field MRI scanner(0.2 tesla). In the phantom study, when the proportion of water and oil were the same in the opposed-phase, the value of the signal-to-noise ratio(SNR) was the lowest. In healthy volunteers aged 23 to 59 years, the SNR of the opposed-phase was significantly lower than those of T_1-SE and T_2-TSE. In the clinical examples, the contrast-to-noise ratio(CNR) of opposed-phase images was significantly better than those of T_1-SE and T_2-TSE. In the examination of metastatic bone marrow tumor using a low-field MRI scanner(0.2 tesla), the opposed-phase image was most effective.
社団法人日本放射線技術学会の論文
2000-09-20