Abstract #1658
Empirical investigation of tools and imaging techniques for MRI-guided radiotherapy of lung cancer
Tatsuya J Arai 1 , Joris Nofiele 2 , Yam Ki Cheung 1 , Rajiv Chopra 2 , and Amit Sawant 1
1
Radiation Oncology, UT Southwestern Medical
Center, Dallas, Texas, United States,
2
Radiology,
UT Southwestern Medical Center, Dallas, Texas, United
States
Respiratory motion management during the
thoracoabdominal tumor treatment is one of the biggest
challenges in modern image-guided radiation therapy (RT).
MRI enables the long-term, dose-free, soft-tissue
monitoring, representing clear advantages over
x-ray-based imaging modalities. Given unique
requirements of RT guidance-quality (high temporal
resolution, and modest spatial resolution and SNR), we
have been investigating the adaptation of k-t BLAST. We
have also developed MRI-compatible, programmable, and
externally and internally deformable lung motion
phantom, which replicates respiratory motion traces
acquired from lung cancer patients. To our knowledge,
this is the first report of using k-t BLAST for lung
cancer radiotherapy motion management.
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