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AJNR - American Journal of Neuroradiology

Published ahead of print on January 9, 2008
doi: 10.3174/ajnr.A0907

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MR T1-Weighted Inversion Recovery Imaging in Detecting Brain Metastases: Could It Replace T1-Weighted Spin-Echo Imaging?

Y.-F. Qian^a, C.-L. Yu^a, C. Zhang^a and Y.-Q. Yu^a

^a From the Department of Radiology, First Affiliated Hospital of Anhui Medical University, Hefei, China

View larger version (80K): [in this window] [in a new window]   Fig 1. Brain metastases from pulmonary carcinoma are hyperintense on pre-enhanced T1SE image (A) because of bleeding, and many lesions were missed on the pre-enhanced T1IR image (B).

View larger version (72K): [in this window] [in a new window]   Fig 2. A, Brain metastases from pulmonary carcinoma are hypointense on a pre-enhanced T1IR image. B, Compared with T1IR, 2 small cerebellar metastases and 1 small pontine metastasis (black arrow) were not detected with pre-enhanced T1SE imaging, which only showed 3 larger cerebellar lesions.

View larger version (79K): [in this window] [in a new window]   Fig 3. Postenhanced images of Fig. 1. The number of enhanced metastases is greater on postenhanced T1SE image (A) than on postenhanced T1IR image (B), and the conspicuity of lesions is better on the postenhanced T1SE image.

View larger version (81K): [in this window] [in a new window]   Fig 4. Brain metastases from breast cancer. The volume of the biggest metastases among the 3 lesions is similar between postenhanced T1SE image (A) and T1IR image (B), and the conspicuity of 2 smaller lesions is better on postenhanced T1SE image with more obvious contrast with brain tissue.