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. 1997 Sep-Oct;21(5):818-25.
doi: 10.1097/00004728-199709000-00031.

Laser-induced thermal lesions in the human brain: short- and long-term appearance on MRI

B Schwabe  1 , T Kahn, T Harth, F Ulrich, H J Schwarzmaier
Affiliations

Laser-induced thermal lesions in the human brain: short- and long-term appearance on MRI

B Schwabe et al. J Comput Assist Tomogr. 1997 Sep-Oct.

Abstract

Purpose: The purpose of our study was to investigate with MRI the development of thermal lesions in the human brain up to almost 4 years after laser-induced interstitial thermotherapy (LITT).

Method: Eighteen patients with brain tumors who underwent LITT entered the study.

Results: In all patients the acute lesion comprised five concentric zones that showed reverse signal intensities on T1- versus T2-weighted images. Lesion development over time was uniform in 89% of the lesions. In two cases variations were observed.

Conclusion: The results of our MR follow-up studies showed that post-LITT, laser-induced lesions will shrink exponentially after an initial expansion without any pseudocystic effects.

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