Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting • 07-12 May 2022 • London, UK
08:00 | Acquisition Strategies for Multicontrast MRI in the Brain
Rasim Boyacioglu
Multi-contrast brain MRI provides more information rapidly. Acquisition strategies for multi-contrast MRI are divided into three categories. The conventional methods are mainly focused on CS-type reconstructions to generate multiple contrasts. Recently developed multi-parameter quantitative techniques aim to map multiple tissue properties simultaneously. They are inherently rapid, provide registered quantitative maps and weighted images. They can be broadly grouped into two categories: 1) fast and dynamic scanning of sequences with fixed contrast (EPTI, STAGE, etc.), and 2) quasi-randomly varied steady-state based sequences (MRF, etc.). Synthetic images can be generated from quantified tissue properties to mimic conventional weighted images when needed.
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08:30 | What Can We Quantify with Multicontrast MRI: Analysis Approaches for Neurological Applications
Akifumi Hagiwara
With the advancement of MRI and processing methods, multiple quantitative values have been developed to investigate the brains. Some acquisition models simultaneously acquire multi-contrast images to reduce scan times and avoid potential issues associated with registration of different images. Machine learning models, including radiomic analysis, have been gaining popularity in research settings. Some other techniques combine multiple images to extract single images associated with the meaningful aspects of biology in the brain. The current talk will cover techniques to acquire multiple quantitative values and analysis methods to deal with the acquired quantitative values.
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