schmid_2006a

Myocardial Material Parameter Estimation - A Comparative Study for Simple Shear - Schmid, Nash, Young and Hunter - 2006


Original Model Status

Model curated, but did not run in PCEnv simulator. Documentation was also incomplete and not comprehensive, also was slightly incorrect.


Work done on model:

Initially, under the 'Mechanical Constitutive Laws' section of the CellML repository, the Guccione 1991 citation had 5 subversions. After clarification from Martyn Nash, it was found that version 5 corresponded to the 'Taylor series expansion of the Tangent law' in the publication titled 'Myocardial Material Parameter Estimation, A Comparative Study for Simple Shear' by Schmid et. al.

I rewrote the documentation for models 1,2,4 and 5 under the old Guccione citation, and also put them under their own citations corresponding to which publication they drew ideas or concepts from.

This model had previously been curated under a different citation, and PCEnv had been unable to simulate any results from the corresponding publication. Upon loading the model, PCEnv gave errors regarding the model being 'unsuitably constrained'. This particular model was tagged under the 'Mechanical Constitutive Laws' section in the CellML repository; since it was tagged in this section it was decided to check if the file worked in CMISS. Upon clarifying with James, it was decided that we should ask around the institute and see if the file was being utilized in CMISS and by any one else. Feedback from people in the institute suggested that the file was compliant within CMISS and that it was being used.


Curation Status:

Model still does not run in PCEnv simulator, as it (PCEnv) cannot handle matrices and these mechanical laws involve the use of many transformation matrices. It does however run in CMISS and is functioning correctly. Documentation is also clear and concise and people seeking the particular 'Taylor series expansion of the Tangent law' now have a more indepth and accurate synopsis in both the documentation and model page, so they know this is exactly what they are after.


Further work required:

Curate the model to an extent where it may one day run in PCEnv, this is dependant on when PCEnv will be able to integrate matrix functionality. Perhaps include some diagrams in the documentation as the documentation (although written to not be too technical) may still be confusing for people who are unfamiliar with this topic or field of study.

Added by:Vignesh Kumar
Date:31/01/2008