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MR imaging of vertebral metastases: evaluation of fat saturation imaging
N Uchida1, K Sugimura, A Kajitani
1Department of Radiology, Shimane Medical University, Izumo, Japan.
Objective:
To compare conventional T1-weighted imaging (SE-T1) and chemical shift fat-saturation T1-weighted imaging (FS-T1) in the diagnosis of bone metastases.
Subjects:
Twenty-two patients (101 vertebrae) with non-neoplastic lesions (Group 1) and 21 patients (72 vertebrae) with spinal metastases (Group 2) were evaluated with both images.
Results:
The signal intensity (SI) distribution of Groups 1 and 2 on SE-T1 showed various patterns, and SI measurement was not significantly different between the two groups. On FS-T1, all non-neoplastic lesions had a low-intensity homogeneous appearance; however, the metastases had mixed to high SI. The SI measurement data of Group 2 was significantly (P < 0.0001) higher than that of Group 1.
Conclusion:
FS-T1 was useful in evaluating vertebral metastases.