TY  - JOUR
AU  - Alberto Hidalgo
AU  - Ferran Poveda
AU  - Enric Marti
AU  - Debora Gil
AU  - Albert Andaluz
AU  - Francesc Carreras
AU  - Manuel Ballester
PY  - 2012//
TI  - Evidence of continuous helical structure of the cardiac ventricular anatomy assessed by diffusion tensor imaging magnetic resonance multiresolution tractography
T2  - ECR
JO  - European Radiology
SP  - 361
EP  - 362
VL  - 3
IS  - 1
PB  - Springer Link
N2  - Deep understanding of myocardial structure linking morphology and func- tion of the heart would unravel crucial knowledge for medical and surgical clinical procedures and studies. Diffusion tensor MRI provides a discrete measurement of the 3D arrangement of myocardial fibres by the observation of local anisotropicdiffusion of water molecules in biological tissues. In this work, we present a multi- scale visualisation technique based on DT-MRI streamlining capable of uncovering additional properties of the architectural organisation of the heart. Methods and Materials: We selected the John Hopkins University (JHU) Canine Heart Dataset, where the long axis cardiac plane is aligned with the scanner’s Z- axis. Their equipment included a 4-element passed array coil emitting a 1.5 T. For DTI acquisition, a 3D-FSE sequence is apply. We used 200 seeds for full-scale tractography, while we applied a MIP mapping technique for simplified tractographic reconstruction. In this case, we reduced each DTI 3D volume dimensions by order- two magnitude before streamlining.Our simplified tractographic reconstruction method keeps the main geometric features of fibres, allowing for an easier identification of their global morphological disposition, including the ventricular basal ring. Moreover, we noticed a clearly visible helical disposition of the myocardial fibres, in line with the helical myocardial band ventricular structure described by Torrent-Guasp. Finally, our simplified visualisation with single tracts identifies the main segments of the helical ventricular architecture.DT-MRI makes possible the identification of a continuous helical architecture of the myocardial fibres, which validates Torrent-Guasp’s helical myocardial band ventricular anatomical model.
SN  - 1869-4101
UR  - http://www.myesr.org/cms/website.php?id=/en/ecr_2012/ecr_2012_book_of_abstracts.htm
L1  - http://refbase.cvc.uab.es/files/HPM2012.pdf
UR  - http://dx.doi.org/10.1007/s13244-012-0161-4
N1  - IAM
ID  - Alberto Hidalgo2012
ER  -