Todd, Nick and Prakash, Jaya and Odeen, Henrik and de Bever, Josh and Payne, Allison and Yalavarthy, Phaneendra and Parker, Dennis L. (2014) Toward Real-Time Availability of 3D Temperature Maps Created with Temporally Constrained Reconstruction. In: MAGNETIC RESONANCE IN MEDICINE, 71 (4). pp. 1394-1404.
Full text not available from this repository. (Request a copy)Abstract
PurposeTo extend the previously developed temporally constrained reconstruction (TCR) algorithm to allow for real-time availability of three-dimensional (3D) temperature maps capable of monitoring MR-guided high intensity focused ultrasound applications. MethodsA real-time TCR (RT-TCR) algorithm is developed that only uses current and previously acquired undersampled k-space data from a 3D segmented EPI pulse sequence, with the image reconstruction done in a graphics processing unit implementation to overcome computation burden. Simulated and experimental data sets of HIFU heating are used to evaluate the performance of the RT-TCR algorithm. ResultsThe simulation studies demonstrate that the RT-TCR algorithm has subsecond reconstruction time and can accurately measure HIFU-induced temperature rises of 20 degrees C in 15 s for 3D volumes of 16 slices (RMSE = 0.1 degrees C), 24 slices (RMSE = 0.2 degrees C), and 32 slices (RMSE = 0.3 degrees C). Experimental results in ex vivo porcine muscle demonstrate that the RT-TCR approach can reconstruct temperature maps with 192 x 162 x 66 mm 3D volume coverage, 1.5 x 1.5 x 3.0 mm resolution, and 1.2-s scan time with an accuracy of 0.5 degrees C. ConclusionThe RT-TCR algorithm offers an approach to obtaining large coverage 3D temperature maps in real-time for monitoring MR-guided high intensity focused ultrasound treatments. Magn Reson Med 71:1394-1404, 2014. (c) 2013 Wiley Periodicals, Inc.
| Item Type: | Journal Article |
|---|---|
| Publication: | MAGNETIC RESONANCE IN MEDICINE |
| Publisher: | WILEY-BLACKWELL |
| Additional Information: | Copyright for this article belongs to the WILEY-BLACKWELL, USA |
| Keywords: | MR thermometry; temperature; constrained reconstruction; HIFU |
| Department/Centre: | Division of Interdisciplinary Sciences > Supercomputer Education & Research Centre |
| Date Deposited: | 28 May 2014 09:35 |
| Last Modified: | 28 May 2014 09:35 |
| URI: | http://eprints.iisc.ac.in/id/eprint/49078 |
Actions (login required)
 |
View Item |
