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baiwenjia / ukbb_cardiac

Some code for processing and analysing UK Biobank cardiac MR images.
Apache License 2.0
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Error in average_3d_ffd #8

Closed karllandheer closed 3 years ago

karllandheer commented 3 years ago

Hello, when I try to run average_3d_ffd (necessary to calculate the strain values) I get this error:

double free or corruption (out) Aborted (core dumped)

Do you have any idea on how I can remedy this?

baiwenjia commented 3 years ago

Sorry, this is a programme that I wrote using C++ (nowadays most people use Python...) and linked it to the MIRTK library, developed in our lab. Currently, I do not have a Python alternative for this. You may try perform motion tracking without this command, i.e. changing the code to just perform forward image registration. In this way, motion tracking can still work. However, the strain curve may have the drift effect (i.e. the (N-1)-th frame will not have zero strain, although it is close to end-diastolic frame). More information about drift effect can be found in this paper (https://www.sciencedirect.com/science/article/pii/S1361841513000388).