These data sets are for research use by acadmeic or not for profit institutitions only. Commercial organizations should contact Dr. Raimond Winslow (rwinslow at bme.jhu.edu).

Acknowledgements

Publications or presentations using any of the following data should acknowledge:

Drs. Patrick A. Helm and Raimond L. Winslow at the Center for Cardiovascular Bioinformatics and Modeling and Dr. Elliot McVeigh at the National Institute of Health for provision of data.

Description

Each heart was placed in an acrylic container filled with Fomblin, a perfluoropolyether (Ausimon, Thorofare, NJ). Fomblin has a low dielectric effect and minimal MR signal thereby increasing contrast and eliminating unwanted susceptibility artifacts near the boundaries of the heart. The long axis of the hearts was aligned with the z-axis of the scanner. Images were acquired with a 4-element knee phased array coil on a 1.5 T GE CV/I MRI Scanner (GE, Medical System, Wausheka, WI) using an enhanced gradient system with 40 mT/m maximum gradient amplitude and a 150 T/m/s slew rate.

* recommended data set

Catalog of Reconstructed Hearts

Last updated November 5, 2004 .

References

Imaging Nomenclature

Term	Definition
DTMRI:	Diffusion Tensor Magnetic Resonance Imaging - the imaging technique used to acquire myocardialfiber data
TR:	Repetition Time - the time between each RF excitation pulse
TE:	Time to Echo - the amount of time after the excitation pulse that the echo is sampled
FSE:	Fast Spin Echo - an imaging technique where more than one echo is acquired per excitation pulse
ETL:	Echo Train Length - the number of echos acquired per RF excitation pulse
FOV:	Field of View - the area imaged. FOV1 pertains to the in-plane dimension. FOV2 pertains to the long-axis dimension. (FOV) / (Sample Points) = (Resolution for a given dimension).

Data Types and Descriptions

Geometry Data:
The geometry data consists of a single 3D matrix (x, y, z) of gray scale MR images, where z is in the long-axis direction ( i.e. , apex to base). One file format is available.

Matlab format ( *.mat file)
This file can be loaded directly from the Matlab environment

Fiber Data:
The fiber data consists of nine 3D matrices (x, y, z), where z is in the long-axis direction ( i.e. , apex to base). These nine matrices define the eigenvectors which describe the diffusion tensor. Typically, they are named v11 , v12 , v13 , v21 , etc. , where v21 contains the first component of the secondary eigenvector. One file format is available.

Matlab format ( *.mat file)
This file can be loaded directly from the Matlab environment

Electrical Mapping Data:
Not available at this time.

Simulation Data:
Not available at this time.