Funktionelle MR-Bildgebung zur Hypoxiebildgebung für die Strahlentherapie
- Kolloquium

Funktionelle MR-Bildgebung zur Hypoxiebildgebung für die Strahlentherapie
Hypoxia is a major problem in radiation therapy. Outcome of treatment response and patient survival rate depends on tumor oxygenation. Efficiency of radiation is reduced. Assessment of intratumoral tumor oxygenation for dose prescription has the potential to improve treatment efficiency significantly. Tumor oxygenation can be assessed by using several different functional MRI techniques such as BOLD, TOLD, IVM, diffusion, perfusion (DCI-MRI), extravasation (DCI-MRI), compartment assessment, vessel size imaging, kurtosis imaging. Functional MRI and its evaluation techniques aiming to assess intratumoral oxygenation distribution are presented.



![3D visualisation of human neuronal tissue reconstructed by multi-scale X-ray phase contrast tomography. Neuronal cell nuclei are shown in yellow for the granule neurons in the dentate gyrus region of the hippocampus. Blood vessels are shown in red. By changing the X-ray optical magnification in the multi-scale recordings, one can zoom into regions-of-interest (red ovals). In these scans the resolution is high enough to resolve sub-structures of the nucleus, associated with different DNA packing regimes. Adapted from [6]](/storages/physik/_processed_/e/4/csm_Kolloquium_Salditt_0e30a3f090.png)




