Accelerated methods for acquiring phase contrast (PC) MRI allow the acquisition of 4D flow data of the whole heart in clinically ac- ceptable times. These datasets are becoming interesting both for clin- icians – to better stratify diagnosis – and in the modeling community – to constrain patient-specific models. One of the difficulties related to PC data is a limited accuracy in the regions of low flow such as close to the myocardial wall, where the velocity field may even produce observed blood motion across the endocardial surface. To address this issue we propose to constrain the motion of blood in cavity during the analysis by using cine MRI and replacing the PC velocity in the peri-myocardial zone by neighboring tissue velocity obtained by analysis of 3D tagged MRI. We demonstrate the effect of these corrections on 2 healthy volun- teer datasets and on one patient with a hypoplastic left ventricle.
|Title of host publication
|Functional Imaging and Modeling of the Heart
|Subtitle of host publication
|7th International Conference, FIMH 2013, London, UK, June 20-22, 2013. Proceedings
|Number of pages
|Published - 2013
|Lecture Notes in Computer Science