Sciweavers

Share
MICCAI
2005
Springer

Inter-frame Motion Correction for MR Thermometry

10 years 2 months ago
Inter-frame Motion Correction for MR Thermometry
Noninvasive temperature measurement is feasible with MRI to monitor changes in thermal therapy. Phase shift based MR thermometry gives an estimate of the relative temperature variation between thermal and baseline images. This technique is limited, however, when applied on targets under inter-frame motion. Simple image registration and subtraction are not adequate to recover the temperature properly since the phase shift due to temperature changes is corrupted by an unwanted phase shift. In this work, the unwanted phase shift is predicted from the raw registered phase shift map itself. To estimate the unwanted phase shift, a thin plate smoothing spline is fitted to the values outside the heated region. The spline value in the heated area serves as an estimate for the offset. The estimation result is applied to correct errors in the temperature maps of an ex-vivo experiment.
S. Suprijanto, M. W. Vogel, Frans Vos, Henri A. Vr
Added 15 Nov 2009
Updated 15 Nov 2009
Type Conference
Year 2005
Where MICCAI
Authors S. Suprijanto, M. W. Vogel, Frans Vos, Henri A. Vrooman, Albert M. Vossepoel
Comments (0)
books