@article {Fallavollita2010e,
	title = {2D/3D Registration of Ultrasound and Fluoroscopy: is image preprocessing useful?},
	year = {2010},
	month = {09/2010},
	address = {Trondheim, Norway, September 2-4, 2010},
	author = {Pascal Fallavollita and Zahra Karim-Aghaloo and E. Clif Burdette and Danny Y Song and Purang Abolmaesumi and Gabor Fichtinger}
}
@conference {Fallavollita2010b,
	title = {Localization of brachytherapy seeds in ultrasound by registration to fluoroscopy},
	booktitle = {SPIE Medical imaging},
	volume = {7625},
	year = {2010},
	month = {23 February 2010},
	pages = {762519-1 - 762519-8},
	address = {San Diego},
	doi = {10.1117/12.844015},
	author = {Pascal Fallavollita and Zahra Karim-Aghaloo and E. Clif Burdette and Danny Y Song and Purang Abolmaesumi and Gabor Fichtinger}
}
@article {Fallavollita2010c,
	title = {Registration Between Ultrasound and Fluoroscopy or CT in Prostate Brachytherapy},
	journal = {Medical Physics},
	volume = {37},
	year = {2010},
	month = {2010},
	pages = {2749-2760},
	author = {Pascal Fallavollita and Zahra Karim-Aghaloo and E. Clif Burdette and Danny Y Song and Purang Abolmaesumi and Gabor Fichtinger}
}
@conference {Karim-Aghaloo2009,
	title = {Intraoperative localization of brachytherapy implants using intensity-based registration},
	booktitle = {SPIE Medical Imaging},
	volume = {7261},
	year = {2009},
	author = {Zahra Karim-Aghaloo and Purang Abolmaesumi and Narges Ahmidi and Thomas K. Chen and David Gobbi and Gabor Fichtinger}
}
@conference {Karim-Aghaloo2008a,
	title = {Intensity-based registration of prostate brachytherapy implants and ultrasound},
	booktitle = {Procedings 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro ISBI 2008},
	year = {2008},
	month = {14{\textendash}17 May},
	pages = {780{\textendash}783},
	doi = {10 1109/ISBI 2008 4541112},
	author = {Zahra Karim-Aghaloo and Gabor Fichtinger and David Gobbi and E. Clif Burdette and Robert Rohling and Purang Abolmaesumi}
}
@conference {Karim-Aghaloo2008b,
	title = {Intra-operative Localization of Brachytherapy Implants Using Intensity-based Registration},
	booktitle = {7th Imaging Symposium of the Imaging Network of Ontario},
	year = {2008},
	author = {Zahra Karim-Aghaloo and Purang Abolmaesumi and Narges Ahmidi and Thomas K. Chen and David Gobbi and Gabor Fichtinger}
}
@article {Hefny2008,
	title = {Quantification of edematic effects in prostate brachytherapy interventions},
	journal = {Medical image computing and computer-assisted intervention (MICCAI)},
	volume = {11},
	number = {Pt 2},
	year = {2008},
	pages = {493{\textendash}500},
	publisher = {School of Computing, Queen{\textquoteright}s University, Kingston, Ontario, Canada},
	abstract = {<p>We present a quantitative model to analyze the detrimental effects of for edema on the quality of prostate brachytherapy implants We account for both tissue expansion, implant migration by mapping intra-operative ultrasound, post-implant CT We pre-process the ultrasound with a phase congruency filter, and map it to the volume CT using a B-spline deformable mutual information similarity metric To test the method, we implanted a standard training phantom with 48 seeds, imaged the phantom with ultrasound, CT, registered the two for ground truth Edema was simulated by distorting the CT volume by known transformations The objective was to match the distorted implant to the intra-operative ultrasound Performance was measured relative to ground truth We successfully mapped 100\% of deformed seeds to ground truth under edematic expansion up to 40\% of volume growth Seed matching performance was 98\% with random seed migration of 3mm superimposed on 10\% edematic volume growth This method promises to be clinically applicable as the first quantitative analysis tool to measure edematic implant deformations occurring between the operating room, post-operative CT imaging</p>
},
	keywords = {adverse effects, adverse effects/instrumentation, Algorithms, Automated, Brachytherapy, complications/radiotherapy, Computer-Assisted, Edema, etiology/radiography, Humans, Male, methods, Pattern Recognition, Prostatic Diseases, Prostatic Neoplasms, Prosthesis Implantation, Radiographic Image Enhancement, Radiographic Image Interpretation, Reproducibility of Results, Sensitivity, Specificity, Tomography, Treatment Outcome, X-Ray Computed},
	author = {Mohamed Hefny and Purang Abolmaesumi and Zahra Karim-Aghaloo and David Gobbi and Randy Ellis and Gabor Fichtinger}
}
@conference {Karim-Aghaloo2008,
	title = {Towards detecting surgical clips in 3D ultrasound for target localization in radiation therapy: a study on tissue phantoms},
	booktitle = {International Conference of the IEEE Engineering in Medicine and Biology Society},
	volume = {2008},
	year = {2008},
	pages = {5282{\textendash}5285},
	publisher = {Department of Electrical, Computer Engineering, Queens University, Kingston, ON K7L3N6, Canada},
	organization = {Department of Electrical, Computer Engineering, Queens University, Kingston, ON K7L3N6, Canada},
	abstract = {<p>A study is performed to measure the visibility of small surgical clips in 3D ultrasound volumes of a phantom as the first step towards using such clips as fiducial markers in radiation therapy Visibility is calculated as the contrast to noise ratio of the echo from the clip to the background The appearance of a resonance tail is also calculated using a moment analysis Contrast is found to be high, mostly independent of material, size of the clip All clips are visible, but the length of the tail is found to be dependent on clip orientation to the ultrasound beam The consistent visibility of the clips suggests they are suitable as fiducial markers in ultrasound, the dependency of the resonance tail on orientation provides an opportunity to distinguish clips from other specular reflectors</p>
},
	keywords = {Computer-Assisted, Equipment Design, Equipment Failure Analysis, Humans, Image Enhancement, Imaging, instrumentation, instrumentation/methods, methods, Phantoms, Radiotherapy, Reproducibility of Results, Sensitivity, Specificity, Surgical Instruments, Three-Dimensional, Ultrasonography},
	doi = {10 1109/IEMBS 2008 4650406},
	url = {http://dx doi org/10 1109/IEMBS 2008 4650406},
	author = {Zahra Karim-Aghaloo and Prasad Shrawane and Purang Abolmaesumi and Gabor Fichtinger and Robert Rohling}
}
