- Workshop presentation
- Open Access
Accelerated and KWIC-filtered cardiac T2 mapping for improved precision: proof of principle
© Lugand et al; licensee BioMed Central Ltd. 2015
- Published: 3 February 2015
- Phantom Study
- Radial Image
- Radial Line
- Motion Sensitivity
- Matrix 256x256
Standard navigator-gated radial T2 maps at 3T (Siemens Skyra) were acquired with 3 T2Prep durations, 308 radial lines with golden-angle increment per image, matrix 256x256, and spatial resolution (1.17mm)2  in an agar-NiCl2 phantom with relaxation times that approximated myocardium and blood. Subsequently, T2 maps at the same location were acquired with 6 T2Prep durations, with 308 and 110 lines per image. T2 maps were reconstructed both with and without the KWIC filter. The T2 standard deviations (σT2) of the myocardial compartment in the resulting T2 maps were then compared. Finally, the same protocol was applied for the myocardium in 3 healthy volunteers.
The phantom study demonstrated that the application of the KWIC filter to radial T2 mapping allows for a shortening of the acquisition time together with an increase in precision. The equivalency of the KWIC-filtered protocol in vivo might be caused by the lower overall SNR that is exacerbated by the undersampling, although this needs to be investigated in a larger cohort.
Emma Muschamp Foundation (RBvH).
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