Elastic image registration for guiding focal laser ablation of prostate cancer: preliminary results

Computer Methods and Programs in Biomedicine
Nasr MakniN Betrouni

Abstract

To guide ultrasound-driven prostate photodynamic therapy using information from MRI-based treatment planning. Robust points matching (RPM) and thin plate splines (TPS) are used to solve correspondences and to map optimally positioned landmarks from MR images to transrectal ultrasound (TRUS) images. The algorithm uses a reduced number of anatomical markers that are initialized on the images. Both phantom and patient data were used to evaluate precision and robustness of the method. Mean registration error (±standard deviation) was of 2.18±0.25 mm and 1.55±0.31 mm for patient prostate and urethra, respectively. Repeated tests with different markers initialization conditions showed that the quality of registration was neither influenced by the number of markers nor to the human observer. This method allows for satisfyingly accurate and robust non rigid registration of MRI and TRUS and provides practitioners with substantial help in mapping treatment planning from pre-operative MRI to interventional TRUS.

References

Jul 16, 2002·Magnetic Resonance Imaging·Irving KaplanEdward J Holupka
Jul 21, 2004·Medical Physics·Christophe ReynierJean-Yves Giraud
Oct 16, 2007·The Journal of Urology·Scott E EggenerUNKNOWN International Task Force on Prostate Cancer and the Focal Lesion Paradigm
Mar 20, 2009·The New England Journal of Medicine·Fritz H SchröderUNKNOWN ERSPC Investigators
Mar 24, 2009·Physics in Medicine and Biology·Sean R H DavidsonBrian C Wilson
Jan 11, 2011·Medical Image Analysis·Yipeng HuDean Barratt
Jul 15, 2011·Physics in Medicine and Biology·Nacim BetrouniSerge Mordon

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Citations

Jan 15, 2014·Computer Methods and Programs in Biomedicine·Chao JinJing Liu
Aug 27, 2014·Computers in Biology and Medicine·O ChilaliN Betrouni
Jun 17, 2015·IEEE Transactions on Medical Imaging·Siavash KhallaghiPurang Abolmaesumi
Sep 10, 2014·Radiology·Cynthia MénardMasoom A Haider

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