Hybrid magnetic resonance and optoacoustic tomography (MROT) for preclinical neuroimaging

Zhenyue Chen, Irmak Gezginer, Mark Aurel Augath, Wuwei Ren, Yu Hang Liu, Ruiqing Ni, Xosé Luís Deán-Ben, Daniel Razansky

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Multi-modal imaging is essential for advancing our understanding of brain function and unraveling pathophysiological processes underlying neurological and psychiatric disorders. Magnetic resonance (MR) and optoacoustic (OA) imaging have been shown to provide highly complementary contrasts and capabilities for preclinical neuroimaging. True integration between these modalities can thus offer unprecedented capabilities for studying the rodent brain in action. We report on a hybrid magnetic resonance and optoacoustic tomography (MROT) system for concurrent noninvasive structural and functional imaging of the mouse brain. Volumetric OA tomography was designed as an insert into a high-field MR scanner by integrating a customized MR-compatible spherical transducer array, an illumination module, and a dedicated radiofrequency coil. A tailored data processing pipeline has been developed to mitigate signal crosstalk and accurately register image volumes acquired with T1-weighted, angiography, and blood oxygenation level-dependent (BOLD) sequences onto the corresponding vascular and oxygenation data recorded with the OA modality. We demonstrate the concurrent acquisition of dual-mode anatomical and angiographic brain images with the scanner, as well as real-time functional readings of multiple hemodynamic parameters from animals subjected to oxygenation stress. Our approach combines the functional and molecular imaging advantages of OA with the superb soft-tissue contrast of MR, further providing an excellent platform for cross-validation of functional readings by the two modalities.

Original languageEnglish
Article number332
JournalLight: Science and Applications
Volume11
Issue number1
DOIs
StatePublished - Dec 2022
Externally publishedYes

Fingerprint

Dive into the research topics of 'Hybrid magnetic resonance and optoacoustic tomography (MROT) for preclinical neuroimaging'. Together they form a unique fingerprint.

Cite this