Dual-phase chemical-shift imaging in the detection of diffuse bone metastasis |
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Authors: | Kozawa Eito Saito Waka Nishi Naoko Amanuma Makoto Heshiki Atsuko |
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Institution: | Department of Radiology, Saitama Medical School. |
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Abstract: | Preliminary studies were performed to evaluate the usefulness of lumbar bone marrow MRI using the dual chemical-shift GRE sequence in the detection of diffuse bone metastasis. Two GRE images (TE = 2.3 msec and 4.6 msec) were obtained, and SIR was calculated. SIR was designated as the ratio of in-phase to out-of-phase signal intensity. Among 45 patients with suspicious lumbar bone metastases, diffuse bone metastases were present in 7. Mean SIRs were compared by unpaired t-test. SIRs of diffuse bone metastases had significantly higher signal intensities than those of non-diffuse bone metastases of vertebrae (p < 0.01). |
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