@conference {Dehghan2016, title = {CT AND MRI FUSION FOR POSTIMPLANT PROSTATE BRACHYTHERAPY EVALUATION}, booktitle = {IEEE Int. Symp on Biomedical Imaging}, year = {2016}, month = {04/2016}, pages = {625-628}, abstract = {

Postoperative evaluation of prostate brachytherapy is typically
performed using CT, which does not have sufficient
soft tissue contrast for accurate anatomy delineation. MR-CT
fusion enables more accurate localization of both anatomy
and implanted radioactive seeds, and hence, improves the
accuracy of postoperative dosimetry. We propose a method
for automatic registration of MR and CT images without a
need for manual initialization. Our registration method employs
a point-to-volume registration scheme during which
localized seeds in the CT images, produced by commercial
treatment planning systems as part of the standard of care,
are rigidly registered to preprocessed MRI images. We tested
our algorithm on ten patient data sets and achieved an overall
registration error of 1.6 {\textpm} 0.8mm with a running time of less
than 20s. With high registration accuracy and computational
speed, and no need for manual intervention, our method has
the potential to be employed in clinical applications.

}, keywords = {Brachytherapy, Prostate}, author = {Ehsan Dehghan and Yi Le and Junghoon Lee and Danny Y Song and Gabor Fichtinger and Jerry L. Prince} } @article {Kuo2014, title = {An image-guidance system for dynamic dose calculation in prostate brachytherapy using ultrasound and fluoroscopy}, journal = {Medical Physics}, volume = {41}, year = {2014}, month = {08/2014}, url = {http://dx.doi.org/10.1118/1.4893761}, author = {Yi Li and E. Clif Burdette and Jerry L. Prince and Gabor Fichtinger and Junghoon Lee and Danny Y Song and Nathanael Kuo and Ehsan Dehghan and Anton Degeut and Omar Mian} } @article {Dehghan2012a, title = {Ultrasound{\textendash}fluoroscopy registration for prostate brachytherapy dosimetry}, journal = {Medical Image Analysis}, volume = {16}, year = {2012}, month = {2012}, pages = {1347-1358}, keywords = {Fluoroscopy, Prostate brachytherapy, Registration, Ultrasound}, doi = {http://dx.doi.org/10.1016/j.media.2012.06.001}, url = {http://www.sciencedirect.com/science/article/pii/S1361841512000813}, author = {Ehsan Dehghan and Junghoon Lee and Pascal Fallavollita and Nathanael Kuo and Anton Degeut and Yi Le and E. Clif Burdette and Danny Y Song and Jerry L. Prince and Gabor Fichtinger} } @conference {Dehghan2011b, title = {Point-to-Volume Registration of Prostate Implants to Ultrasound}, booktitle = {Medical Image Computing and Computer-Assisted Intervention (MICCAI 2011)}, year = {2011}, month = {09/2011}, pages = {615 - 622}, address = {Toronto, ON, Canada}, author = {Ehsan Dehghan and Junghoon Lee and Pascal Fallavollita and Nathanael Kuo and Anton Degeut and E. Clif Burdette and Danny Y Song and Jerry L. Prince and Gabor Fichtinger} } @article {Blevins2011, title = {RadVision: An Image-Guided Brachytherapy Planning/Implant Tool with Extensible Image Acquisition/Processing}, volume = {4}, year = {2011}, month = {10/2011}, address = {Arlington VA, October 12-13, 2011}, author = {Jack Blevins and Junichi Tokuda and Robert Cormack and Junghoon Lee and Nathanael Kuo and Jerry L. Prince and Gabor Fichtinger and Clare M Tempany and E. Clif Burdette} } @article {Lee2011, title = {REDMAPS: Reduced-Dimensionality Matching for Prostate Brachytherapy Seed Reconstruction}, journal = {IEEE Transactions on Medical Imaging}, volume = {30}, year = {2011}, month = {01/2011}, pages = {38-51}, doi = {10.1109/TMI.2010.2059709}, author = {Junghoon Lee and Christian Labat and Ameet K. Jain and Danny Y Song and E. Clif Burdette and Gabor Fichtinger and Jerry L. Prince} } @conference {Dehghan2010a, title = {Prostate Brachytherapy Seed Reconstruction using C-Arm Rotation Measurement and Motion Compensation}, booktitle = {Medical Image Computing and Computer-Assisted Intervention (MICCAI) 2010}, year = {2010}, pages = {283-290}, publisher = {Springer}, organization = {Springer}, address = {Beijing, China}, isbn = {978-3-642-15704-2}, doi = {http://dx.doi.org/10.1007/978-3-642-15705-9_35}, author = {Ehsan Dehghan and Junghoon Lee and Mehdi Moradi and Xu Wen and Gabor Fichtinger and Septimiu E. Salcudean} } @conference {Suljendic2009, title = {MRI Guided Needle Navigation in Prostate Cancer Targeting}, booktitle = {2nd International Workshop on Focal Therapy and Imaging in Prostate and Kidney Cancer}, year = {2009}, author = {Denis Suljendic and Junghoon Lee and S Chopra and Anna Kirilova and J Publicover and J Abed and Masoom Haider and D Galop and Iris Elliott and Gabor Fichtinger and Kristy Brock and Cynthia Menard} } @conference {Lee2009, title = {Optimal Matching for Prostate Brachytherapy Seed Localization with Dimension Reduction}, booktitle = {Medical Image Computing and Computer-Assisted Intervention (MICCAI)}, volume = {5761}, year = {2009}, pages = {59-66}, publisher = {Springer}, organization = {Springer}, address = {London, UK}, isbn = {978-3-642-04267-6}, author = {Junghoon Lee and Christian Labat and Ameet K. Jain and Danny Y Song and Gabor Fichtinger and Jerry L. Prince} } @conference {Ayad2009, title = {Prostate brachytherapy seed localization using a mobile C-arm without tracking}, booktitle = {SPIE Medical Imaging 2009: Visualization, Image-Guided Procedures, and Modeling, Procedings}, volume = {7261}, year = {2009}, pages = {na}, author = {Maria Ayad and Junghoon Lee and Jerry L. Prince and Gabor Fichtinger} } @conference {Lee2009a, title = {Prostate Brachytherapy Seed Reconstruction with Gaussian Blurring and Optimal Coverage Cost}, booktitle = {IEEE Transactions on Medical Imaging}, volume = {na}, year = {2009}, pages = {na}, author = {Junghoon Lee and Ameet K. Jain and Xiaofeng Liu and Jerry L. Prince and Gabor Fichtinger} } @conference {Lee2009b, title = {Reduced-Dimensionality Matching For 3-D Reconstruction Of Prostate Brachytherapy Implants From Incomplete Data}, booktitle = {IEEE International Symposium on Biomedical Imaging}, year = {2009}, note = {IEEE International Symposium on Biomedical Imaging, 2009 (accepted 04/07/2009)}, author = {Junghoon Lee and Christian Labat and Ameet K. Jain and Gabor Fichtinger and Jerry L. Prince} } @article {Lee2008a, title = {Prostate brachytherapy seed localization with Gaussian blurring and camera self-calibration}, journal = {Medical image computing and computer-assisted intervention (MICCAI)}, volume = {11}, number = {Pt 2}, year = {2008}, pages = {636{\textendash}643}, publisher = {Department of Electrical, Computer Engineering, Johns Hopkins University, Baltimore, MD, USA}, abstract = {

A tomosynthesis-based prostate brachytherapy seed localization method is described Gaussian-blurred images are computed from a limited number of X-ray images, and a 3-D volume is reconstructed by backprojection Candidate seed locations are extracted from the reconstructed volume, false positive seeds are removed by optimizing a local cost function In case where the estimated pose error is large, a self-calibration process corrects the estimation error of the intrinsic camera parameters, the translation of the pose in order to improve the reconstruction Simulation, phantom experiment results imply that the implanted seed locations can be estimated from four or five images depending on the number of seeds The algorithm was also validated using patient data, successfully localizing the implanted seeds

}, keywords = {Artifacts, Brachytherapy, Calibration, Computer-Assisted, Humans, instrumentation/methods/standards, Male, methods, methods/standards, Normal Distribution, Prostatic Neoplasms, Radiographic Image Interpretation, radiography/radiotherapy, Radiotherapy, Tomography, X-Ray Computed}, author = {Junghoon Lee and Xiaofeng Liu and Jerry L. Prince and Gabor Fichtinger} } @conference {Lee2008, title = {Tomosynthesis-based radioactive seed localization in prostate brachytherapy using modified distance map images}, booktitle = {Procedings 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro ISBI 2008}, year = {2008}, month = {14{\textendash}17 May}, pages = {680{\textendash}683}, doi = {10 1109/ISBI 2008 4541087}, author = {Junghoon Lee and Xiaofeng Liu and Ameet K. Jain and Jerry L. Prince and Gabor Fichtinger} }