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Zusammenfassung

Motivation: The pH value is an important biomarker for many diseases. MRI-based 3D pH mapping for clinical routine would be an enormous benefit for diagnostics. Goal(s): Prediction of intracellular P-pH maps from H APTw-CEST MRI data using a voxel-wise neural network, aiming to improve brain tumor imaging. Approach: Fifteen glioblastoma patients underwent 3T MRI with both APTw-CEST and P-MRS. A neural network trained on 11 patients data to correlate APTw-CEST features with P-derived pH values, tested on 4 additional patients. Results: The neural network's pH predictions closely matched P-pH maps, showing potential for high-resolution, non-invasive pH mapping in brain tumors. Impact: High resolution pH imaging for better diagnosis of diseases (inflammation, stroke, tumor) and therapy monitoring in clinical routine.