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Ryan M Najafi
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Utility of prepuncture ultrasound for localization of the thoracic epidural space
A Rasoulian, J Lohser, M Najafi, H Rafii-Tari, D Tran, AA Kamani, ...
Canadian Journal of Anesthesia/Journal canadien d'anesthésie 58 (9), 815-823, 2011
442011
Single-camera closed-form real-time needle tracking for ultrasound-guided needle insertion
M Najafi, P Abolmaesumi, R Rohling
Ultrasound in Medicine & Biology 41 (10), 2663-2676, 2015
332015
A closed-form differential formulation for ultrasound spatial calibration: multi-wedge phantom
M Najafi, N Afsham, P Abolmaesumi, R Rohling
Ultrasound in medicine & biology 40 (9), 2231-2243, 2014
312014
A generalized correlation-based model for out-of-plane motion estimation in freehand ultrasound
N Afsham, M Najafi, P Abolmaesumi, R Rohling
IEEE transactions on medical imaging 33 (1), 186-199, 2013
312013
Single camera closed-form real-time needle trajectory tracking for ultrasound
M Najafi, RN Rohling
Society of Photo-Optical Instrumentation Engineers, 2011
182011
Feasibility of image registration for ultrasound-guided prostate radiotherapy based on similarity measurement by a convolutional neural network
N Zhu, M Najafi, B Han, S Hancock, D Hristov
Technology in cancer research & treatment 18, 1533033818821964, 2019
172019
Intrafractional tracking accuracy of a transperineal ultrasound image guidance system for prostate radiotherapy
AS Yu, M Najafi, DH Hristov, T Phillips
Technology in Cancer Research & Treatment 16 (6), 1067-1078, 2017
162017
Nonlocal means filter-based speckle tracking
N Afsham, A Rasoulian, M Najafi, P Abolmaesumi, R Rohling
IEEE transactions on ultrasonics, ferroelectrics, and frequency control 62 …, 2015
162015
Evaluation of transperineal ultrasound imaging as a potential solution for target tracking during hypofractionated radiotherapy for prostate cancer
B Han, M Najafi, DT Cooper, M Lachaine, R von Eyben, S Hancock, ...
Radiation oncology 13, 1-7, 2018
152018
A closed-form differential formulation for ultrasound spatial calibration: single wall phantom
M Najafi, N Afsham, P Abolmaesumi, R Rohling
Ultrasound in medicine & biology 41 (4), 1079-1094, 2015
132015
Calibration for position tracking of swept motor 3-d ultrasound
JM Abeysekera, M Najafi, R Rohling, SE Salcudean
Ultrasound in Medicine & Biology 40 (6), 1356-1371, 2014
102014
Out-of-plane motion estimation based on a Rician-Inverse Gaussian model of RF ultrasound signals: speckle tracking without fully developed speckle
N Afsham, M Najafi, P Abolmaesumi, R Rohling
Medical Imaging 2012: Ultrasonic Imaging, Tomography, and Therapy 8320, 368-374, 2012
102012
Single wall closed-form differential ultrasound calibration
M Najafi, N Afsham, P Abolmaesumi, R Rohling
Proceedings of SPIE 8316, 83162A, 2012
92012
SU‐C‐207B‐07: Deep Convolutional Neural Network Image Matching for Ultrasound Guidance in Radiotherapy
N Zhu, M Najafi, S Hancock, D Hristov
Medical Physics 43 (6Part3), 3331-3331, 2016
62016
A Closed-Form Differential Formulation for Ultrasound Spatial Calibration
M Najafi, N Afsham, P Abolmaesumi, R Rohling
Information Processing in Computer-Assisted Interventions, 44-53, 2012
52012
Filter-Based Speckle Tracking for Freehand Prostate Biopsy: Theory, ex vivo and in vivo Results
N Afsham, S Khallaghi, M Najafi, L Machan, SD Chang, L Goldenberg, ...
Information Processing in Computer-Assisted Interventions: 5th International …, 2014
42014
3D ocular ultrasound using gaze tracking on the contralateral eye: a feasibility study
N Afsham, M Najafi, P Abolmaesumi, R Rohling
Medical Image Computing and Computer-Assisted Intervention–MICCAI 2011: 14th …, 2011
22011
SU‐G‐JeP1‐09: Evaluation of Transperineal Ultrasound Imaging as a Potential Solution for Target Tracking During Ablative Body Radiotherapy for Prostate Cancer
M Najafi, B Han, D Cooper, S Hancock, D Hristov
Medical Physics 43 (6Part25), 3649-3649, 2016
12016
TU‐H‐CAMPUS‐IeP3‐04: Evaluation of Changes in Quantitative Ultrasound Parameters During Prostate Radiotherapy
M Najafi, A El Kaffas, B Han, D Cooper, S Hancock, D Hristov
Medical Physics 43 (6Part37), 3785-3785, 2016
2016
Double Solid Line Tracking Using Similarity-based Image Processing
M Najafi
2015
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Articles 1–20