Journal
MEDICAL IMAGE ANALYSIS
Volume 16, Issue 3, Pages 754-766Publisher
ELSEVIER
DOI: 10.1016/j.media.2010.11.004
Keywords
Neurosurgery; 5-Aminolevulinic-acid; Fluorescence; Integrated diagnosis and therapeutic system; Medical robotics
Categories
Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- New Energy and Industrial Technology Development Organization, Japan
- Japan Society for the Promotion of Science
- Grants-in-Aid for Scientific Research [23680049] Funding Source: KAKEN
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We have developed an integrated diagnosis and therapeutic system for precision malignant gliomas resection during neurosurgery. A combination of three-dimensional (3-D) magnetic resonance imaging (MRI) navigation and 5-aminolevulinic acid (5-ALA)-induced fluorescence based intra-operative tumor diagnosis technique has been incorporated into a robotic laser ablation neurosurgery system with an automatic focusing and robotic scanning mechanism. 5-ALA is a non-fluorescent prodrug that leads to intracellular accumulation of fluorescent protoporphyrins IX (PpIX) in malignant glioma. The PpIX tends to accumulate in pathological lesions, and emits red fluorescence when excited by blue light This fluorescence is illuminated with laser excitation, enables intra-operative identification of the position of a tumor and provides guidance for resection with laser photocoagulation. The information provided by the MRI is enhanced by the intra-operative 5-ALA fluorescence data, and this enhanced information is integrated into a robotic laser ablation system. The accuracy of the fluorescent measurement of the tumor is improved using high-precision spectral analysis. The fluorescence assists in the detection of malignant brain tumors intra-operatively and improves their removal rate. (C) 2010 Elsevier B.V. All rights reserved.
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