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Contrast Enhancement of Intracranial Lesions: Conventional T1-Weighted Spin-Echo versus Fast Spin-Echo MR Imaging Techniques

Takeshi Sugaharaa, Yukunori Korogia, Yulin Gea, Yoshinori Shigematsua, Luxia Lianga, Kazuhiro Yoshizumia, Mika Kitajimaa and Mutsumasa Takahashia

a From the Department of Radiology, Kumamoto University School of Medicine, 1-1-1 Honjo, Kumamoto 860-8556, Japan.



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  		FIG 1. 14-year-old boy with pontine glioma. The T1-FSE sequence was performed before the T1-SE sequence.

A, Enhancing lesion cannot be identified on the T1-SE image (arrow).

B, Enhancement is seen within the pons on the T1-FSE image (arrow).



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  		FIG 2. 60-year-old man with anaplastic ganglioglioma. The T1-FSE sequence was performed before the T1-SE sequence.

A, Peritumoral edema is present on the T1-SE image (arrow).

B, Peritumoral edema is inconspicuous on the T1-FSE image (arrow).



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  		FIG 3. 45-year-old man with glioblastoma. The T1-FSE sequence was performed after the T1-SE sequence.

A and B, The T1-SE image (A) has more severe motion artifacts than does the T1-FSE image (B).



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  		FIG 4. 16-year-old boy with germ cell tumor after surgery. The T1-FSE sequence was performed after the T1-SE sequence.

A, Metal artifacts (arrowheads) associated with surgery are present bilaterally in the occipital region on the T1-SE image.

B, Minimal intraparechymal enhancement, which was difficult to identify on the T1-SE image, is clearly depicted on the T1-FSE image (arrow).



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  		FIG 5. 19-year-old man with multiple sclerosis. The T1-FSE sequence was performed before the T1-SE sequence.

A, On the T1-SE image, multiple sclerosis plaque is observed in right frontal white matter (arrow). No apparent enhancing lesion is visible.

B, The T1-FSE image shows hyperintense rim of multiple sclerosis plaque (arrow), which was not visible on the T1-SE image.





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X