Respiratory motion based dynamic keyhole reconstruction for real-time thoracic MRI
Danny Kyejun Lee 1 , Sean Pollock 1 , Peter Greer 2 , Taeho Kim 1 , and Paul Keall 1
Radiation Physics Laboratory, Sydney Medical
School, The University of Sydney, Camperdown, NSW,
University of Newcastle, NSW, Australia
The dynamic keyhole method using respiratory signals has
been demonstrated to reconstruct MR images with the
considerably small amount of central phase encoding
lines, linked to real-time thoracic imaging with minimal
image intensity loss on tumor. These results suggest
that the dynamic keyhole method could be a desirable
technique for image-guided radiation therapy and
MRI-guided radiotherapy that require real-time MR
monitoring in thoracic region.
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