MR imaging of vertebral metastases: evaluation of fat saturation imaging.
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.


METHODS
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.


CONCLUSIONS
FS-T1 was useful in evaluating vertebral metastases.
Uchida
N
N
Department of Radiology, Shimane Medical University, Izumo, Japan.
Sugimura
K
K
Kajitani
A
A
Yoshizako
T
T
Ishida
T
T
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013125:Spinal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000556:secondary*; D013131:Spine / Q000473:pathology