PMC8248111_01
Pre and postoperative MRI. (a) Representative preoperative T1 contrast enhanced (left) and FLAIR (right) images. (b) Representative 46.9-month post-LITT T1 contrast enhanced (left) and FLAIR (right) images.
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F1
MRI of the brain revealed a solitary ring-enhancing lesion with associated increased FLAIR signal in the left thalamopeduncular region [Figure 1a]. The patient continues to do well at last follow-up [Figure 1b]. Most recently, his MRI from 47.5 months after initial biopsy and 46.9 months after LITT showed only a small cavitation with minimal enhancement and FLAIR signal, likely as a result of LITT [Figure 1b].
Intraoperative and immediate postoperative MRI. (a) Intraoperative MRI demonstrating laser probe position. (b) Immediate postoperative T1-weighterd post-contrast and diffusion-weighted images.
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F2
The laser ablation was carried out under real-time MR thermography [Figure 2a]. Immediate postoperative MRI showed diffusion restriction within the tumor and increased enhancement within the necrotic core [Figure 2b].