From 6d36a11c9c371aa90ff1e66c0712e3d6cca8668a Mon Sep 17 00:00:00 2001 From: Jeremie Fouquet Date: Thu, 23 May 2024 11:07:08 -0400 Subject: [PATCH] docs: update docs for mtsat R1 and delta max --- Docs/MT.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Docs/MT.rst b/Docs/MT.rst index fbf696c..1bb31c5 100644 --- a/Docs/MT.rst +++ b/Docs/MT.rst @@ -249,7 +249,7 @@ If you use a custom contrasts file then the outputs will have the names specifie qi mtsat ----------- -Implementation of Gunther Helm's MT-Sat method. Calculates R1, apparent PD and the semi-quantitative MT-Saturation parameter "delta". This is the fractional reduction in the longitudinal magnetization during one TR, expressed as a percentage. Arguably could be included in the :doc:`Relaxometry` module instead. Outputs R1 instead of T1 as this is more common in the MTSat / MPM literature. If using multi-echo input data the input should be passed through `qi mpm_r2s` first and the output ``S0`` files used as input to `qi mtsat`. By default, does not use the original small flip angle approximation to compute R1 and PD because of the results presented in Edwards et al., 2021. To still use the small flip angle approximation (e.g., for backward compatibility), use the --smallangle (-s) flag. +Implementation of Gunther Helm's MT-Sat method. Calculates R1, apparent PD and the semi-quantitative MT-Saturation parameter "delta". This is the fractional reduction in the longitudinal magnetization during one TR, expressed as a percentage. Arguably could be included in the :doc:`Relaxometry` module instead. Outputs R1 instead of T1 as this is more common in the MTSat / MPM literature. If using multi-echo input data the input should be passed through `qi mpm_r2s` first and the output ``S0`` files used as input to `qi mtsat`. By default, does not use the original small flip angle approximation to compute R1 and PD because of the results presented in Edwards et al., 2021. To still use the small flip angle approximation (e.g., for backward compatibility), use the --smallangle (-s) flag. By default, R1 values above 10 1/s and delta values above 10% are clamped, but you can change these numbers. All delta, R1, and PD values lower than 0 are set to 0. **Example Command Line**