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Quantitative Magnetization Transfer Imaging in Postmortem Brain at 3T Using BSSFP

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Soellinger, M., Langkammer, C., Seifert-Held, T., Krebs, N., Gloor, M., Scheurer, E., Scheffler, K., Fazekas, F., & Ropele, S. (2010). Quantitative Magnetization Transfer Imaging in Postmortem Brain at 3T Using BSSFP. Poster presented at ISMRM-ESMRMB Joint Annual Meeting 2010, Stockholm, Sweden.


引用: https://hdl.handle.net/21.11116/0000-0002-A517-A
要旨
A crucial issue in determining quantitative magnetization transfer (qMT) parameters using balanced steady state free precession (bSSFP) is the estimation of the on-resonant singularity of the superlorentzian absorption line shape G0. We present an empirical G0 calibration method for postmortem in-situ brain scans at 3T using cross-linked BSA (bovine serum albumin) probes. For the investigated temperature range from 6-20°C G0 resulted in 2.0*10-5. First qMT results of three postmortem in-situ brain scans revealed decreased bound pool size ratios f in white matter compared to in-vivo scans.