Fast cine-magnetic resonance imaging point tracking for prostate cancer radiation therapy planning

17th International Conference on the Use of Computers in Radiation Therapy

物理学;计算机科学

Dowling, J.^1 ; Dang, K.^2 ; Fox, Chris D^2 ; Chandra, S.^1 ; Gill, Suki^2 ; Kron, T.^2 ; Pham, D.^2 ; Foroudi, F.^2

CSIRO Australian E-Health Research Centre, Royal Brisbane and Women's Hospital, Australia^1

Peter MacCallum Cancer Centre, Melbourne, Australia^2

关键词: Highly-correlated;    Labour-intensive;    Nonrigid registration;    Observer variations;    Out-of-plane motion;    Points of interest;    Prostate cancers;    Radiation therapy treatment;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/489/1/012027/pdf
DOI  :  10.1088/1742-6596/489/1/012027

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The analysis of intra-fraction organ motion is important for improving the precision of radiation therapy treatment delivery. One method to quantify this motion is for one or more observers to manually identify anatomic points of interest (POIs) on each slice of a cine-MRI sequence. However this is labour intensive and inter- and intra- observer variation can introduce uncertainty. In this paper a fast method for non-rigid registration based point tracking in cine-MRI sagittal and coronal series is described which identifies POIs in 0.98 seconds per sagittal slice and 1.35 seconds per coronal slice. The manual and automatic points were highly correlated (r>0.99, p