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Lijun Ma

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Lijun Ma; Neil Kirby; Renee Korol; David A Larson; Arjun Sahgal
Assessing small-volume spinal cord dose for repeat spinal stereotactic body radiotherapy treatments.
Lijun Ma; Michael McDermott; Ke Nie; Arjun Sahgal; Dennis C Shrieve; Penny K Sneed; Brian Wang; Andrew Hwang; Aliaksandr Karotki; David A Larson
Reliability of contour-based volume calculation for radiosurgery.
Shannon Fogh; Nalin Gupta; Igor Barani; Lijun Ma; Michael McDermott; Jean L Nakamura; Arjun Sahgal; Penny K Sneed; David A Larson
High-precision volume-staged Gamma Knife surgery and equivalent hypofractionation dose schedules for treating large arteriovenous malformations.

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All Publications

2012: Lijun Ma; Neil Kirby; Renee Korol; David A Larson; Arjun Sahgal
Assessing small-volume spinal cord dose for repeat spinal stereotactic body radiotherapy treatments.
Physics in medicine and biology 2012;57(23):7843-51.
2012: Lijun Ma; Michael McDermott; Ke Nie; Arjun Sahgal; Dennis C Shrieve; Penny K Sneed; Brian Wang; Andrew Hwang; Aliaksandr Karotki; David A Larson
Reliability of contour-based volume calculation for radiosurgery.
Journal of neurosurgery 2012;117 Suppl():203-10.
2012: Shannon Fogh; Nalin Gupta; Igor Barani; Lijun Ma; Michael McDermott; Jean L Nakamura; Arjun Sahgal; Penny K Sneed; David A Larson
High-precision volume-staged Gamma Knife surgery and equivalent hypofractionation dose schedules for treating large arteriovenous malformations.
Journal of neurosurgery 2012;117 Suppl():115-9.
2012: Martina Descovich; David A Larson; Lijun Ma; Cynthia F Chuang; Igor J Barani
Comparison between prone and supine patient setup for spine stereotactic body radiosurgery.
Technology in cancer research & treatment 2012;11(3):229-36.
2012: Jorge A Caballero; Sandeep Denduluri; Kathleen R Lamborn; Lijun Ma; Jean L Nakamura; Penny K Sneed; Igor J Barani; Michael W McDermott
Prognostic factors for survival in patients treated with stereotactic radiosurgery for recurrent brain metastases after prior whole brain radiotherapy.
International journal of radiation oncology, biology, physics 2012;83(1):303-9.
2012: Lijun Ma; Arjun Sahgal; David Larson
In reply to Furweger et al. (Int J Radiat Oncol Biol Phys DOI: 10.1016/j.ijrobp.2009.11.030).
International journal of radiation oncology, biology, physics 2012;82(4):1324; author reply 1324.
2011: Stephen L Shiao; Mack Roach; Arjun Sahgal; Cynthia Chuang; Martina Descovich; Alexander R Gottschalk; I-Chow Hsu; Weigang Hu; Siavash Jabbari; Lijun Ma
Temporal compartmental dosing effects for robotic prostate stereotactic body radiotherapy.
Physics in medicine and biology 2011;56(24):7767-75.
2011: Lijun Ma; Michael McDermott; Jean Nakamura; Igor Barani; Shannon Fogh; Andrew Hwang; David A Larson; Letitia Lee; Penny Sneed; Arjun Sahgal
Shot sequencing based on biological equivalent dose considerations for multiple isocenter Gamma Knife radiosurgery.
Physics in medicine and biology 2011;56(22):7247-56.
2011: Lijun Ma; Michael McDermott; Arjun Sahgal; Penny K Sneed; I Barani; Cynthia Chuang; Martina Descovich; W Hu; A Hwang; David A Larson
A two-step optimization method for improving multiple brain lesion treatments with robotic radiosurgery.
Technology in cancer research & treatment 2011;10(4):331-8.
2011: Lijun Ma; Paula L Petti; Brian Wang; Martina Descovich; Cynthia Chuang; Igor J Barani; Sandeep Kunwar; Dennis C Shrieve; Arjun Sahgal; David A Larson
Apparatus dependence of normal brain tissue dose in stereotactic radiosurgery for multiple brain metastases.
Journal of neurosurgery 2011;114(6):1580-4.
2010: Lijun Ma; Arjun Sahgal; Luca Cozzi; Eric Chang; Almon S Shiu; Daniel Letourneau; Fang-Fang Yin; Antonella Fogliata; Wolfgang Kaissl; Derek Hyde; Normand Laperriere; Dennis C Shrieve; David A Larson
Apparatus-dependent dosimetric differences in spine stereotactic body radiotherapy.
Technology in cancer research & treatment 2010;9(6):563-74.
2010: Josef Novotny; Jagdish P Bhatnagar; Hyun-Tai Chung; Jonas Johansson; Greg Bednarz; Lijun Ma; M. Saiful Huq
Assessment of variation in Elekta plastic spherical-calibration phantom and its impact on the Leksell Gamma Knife calibration.
Medical physics 2010;37(9):5066-71.
2010: Sabbir Hossain; Ping Xia; Kim Huang; Martina Descovich; Cynthia Chuang; Alexander R Gottschalk; Mack Roach; Lijun Ma
Dose gradient near target-normal structure interface for nonisocentric CyberKnife and isocentric intensity-modulated body radiotherapy for prostate cancer.
International journal of radiation oncology, biology, physics 2010;78(1):58-63.
2010: Lijun Ma; Arjun Sahgal; Martina Descovich; Young-Bin Cho; Cynthia Chuang; Kim Huang; Normand Laperriere; Dennis C Shrieve; David A Larson
Equivalence in dose fall-off for isocentric and nonisocentric intracranial treatment modalities and its impact on dose fractionation schemes.
International journal of radiation oncology, biology, physics 2010;76(3):943-8.
2009: Lijun Ma; Arjun Sahgal; Sabbir Hossain; Cynthia Chuang; Martina Descovich; Kim Huang; Alex Gottschalk; David A Larson
Nonrandom intrafraction target motions and general strategy for correction of spine stereotactic body radiotherapy.
International journal of radiation oncology, biology, physics 2009;75(4):1261-5.
2009: Arjun Sahgal; Christopher Ames; Dean Chou; Lijun Ma; Kim Huang; Wei Xu; Cynthia Chin; Vivian Weinberg; Cynthia Chuang; Phillip Weinstein; David A Larson
Stereotactic body radiotherapy is effective salvage therapy for patients with prior radiation of spinal metastases.
International journal of radiation oncology, biology, physics 2009;74(3):723-31.
2009: Lijun Ma; Per Kjäll; Josef Novotny; Håkan Nordström; Jonas Johansson; Lynn Verhey
A simple and effective method for validation and measurement of collimator output factors for Leksell Gamma Knife Perfexion.
Physics in medicine and biology 2009;54(12):3897-907.
2008: Lijun Ma; Lynn J Verhey; Cynthia Chuang; Martina Descovich; Vernon Smith; Kim Huang; Michael McDermott; Penny K Sneed
Effect of composite sector collimation on average dose fall-off for Gamma Knife Perfexion.
Journal of neurosurgery 2008;109 Suppl():15-20.
2008: Lijun Ma; Cynthia Chuang; Martina Descovich; Paula Petti; Vernon Smith; Lynn Verhey
Whole-procedure clinical accuracy of gamma knife treatments of large lesions.
Medical physics 2008;35(11):5110-4.
2008: Sabbir Hossain; Ping Xia; Cynthia Chuang; Lynn J Verhey; Alexander R Gottschalk; Guanwei Mu; Lijun Ma
Simulated real time image guided intrafraction tracking-delivery for hypofractionated prostate IMRT.
Medical physics 2008;35(9):4041-8.
2008: Yaoqin Xie; David Djajaputra; Christopher R King; Sabbir Hossain; Lijun Ma; Lei Xing
Intrafractional motion of the prostate during hypofractionated radiotherapy.
International journal of radiation oncology, biology, physics 2008;72(1):236-46.
2008: Arjun Sahgal; Cynthia Chuang; David Larson; Kim Huang; Paula Petti; Phil Weinstein; Lijun Ma
Split-volume treatment planning of multiple consecutive vertebral body metastases for cyberknife image-guided robotic radiosurgery.
Medical dosimetry : official journal of the American Association of Medical Dosimetrists 2008;33(3):175-9.
2007: Arjun Sahgal; Dean Chou; C Ames; Lijun Ma; K Lamborn; K Huang; Cynthia Chuang; A Aiken; Paula L Petti; P Weinstein; David Larson
Image-guided robotic stereotactic body radiotherapy for benign spinal tumors: theUniversity of California San Francisco preliminary experience.
Technology in cancer research & treatment 2007;6(6):595-604.
2007: Cynthia Chuang; Arjun Sahgal; Letitia Lee; David Larson; Kim Huang; Paula L Petti; Lynn J Verhey; Lijun Ma
Effects of residual target motion for image-tracked spine radiosurgery.
Medical physics 2007;34(11):4484-90.
2007: Mao Fu; Mona M Sabra; Coleen M Damcott; Toni I Pollin; Lijun Ma; Sandra Ott; John C Shelton; Xiaolian Shi; Laurie J Reinhart; Jeffrey R O'Connell; Braxton D Mitchell; Leslie J Baier; Alan R Shuldiner
Evidence that Rho guanine nucleotide exchange factor 11 (ARHGEF11) on 1q21 is a type 2 diabetes susceptibility gene in the Old Order Amish.
Diabetes 2007;56(5):1363-8.
2007: Lijun Ma; David Larson; Paula L Petti; Cynthia Chuang; Lynn J Verhey
Boosting central target dose by optimizing embedded dose hot spots for gamma knife radiosurgery.
Stereotactic and functional neurosurgery 2007;85(6):259-63.
2006: Mei Sun; Lijun Ma
Treatments of exceptionally large prostate cancer patients with low-energy intensity-modulated photons.
Journal of applied clinical medical physics / American College of Medical Physics 2006;7(4):43-9.
2005: Lijun Ma; Young Kwok; Lawrence S Chin; Cedric Yu; William F Regine
Comparative analyses of linac and Gamma Knife radiosurgery for trigeminal neuralgia treatments.
Physics in medicine and biology 2005;50(22):5217-27.
2005: Lijun Ma; Young Kwok; Lawrence S Chin; J Marc Simard; William F Regine
Concomitant GRID boost for Gamma Knife radiosurgery.
Medical physics 2005;32(11):3419-23.
2005: Kaile Li; Lijun Ma
A constrained tracking algorithm to optimize plug patterns in multiple isocenter gamma knife radiosurgery planning.
Medical physics 2005;32(10):3132-5.
2005: Mariana Guerrero; X Allen Li; Lijun Ma; Jeanette A Linder; Chad Deyoung; Beth Erickson
Simultaneous integrated intensity-modulated radiotherapy boost for locally advanced gynecological cancer: radiobiological and dosimetric considerations.
International journal of radiation oncology, biology, physics 2005;62(3):933-9.
2004: Lijun Ma
Dosimetric properties of magnetically collimated electron beams for radiation therapy.
Medical physics 2004;31(11):2973-7.
2004: Kaile Li; Lijun Ma
Selective source blocking for Gamma Knife radiosurgery of trigeminal neuralgia based on analytical dose modelling.
Physics in medicine and biology 2004;49(15):3455-63.
2004: Kaile Li; Jianrong Dai; Lijun Ma
Simultaneous minimizing monitor units and number of segments without leaf end abutment for segmental intensity modulated radiation therapy delivery.
Medical physics 2004;31(3):507-12.
2004: Kaile Li; Cedric Yu; Lijun Ma
Improving a scissor-action couch for conformal arc radiotherapy and radiosurgery.
Journal of applied clinical medical physics / American College of Medical Physics 2004;5(3):62-5.
2004: Nakorn Phaisangittisakul; Warren D D'Souza; Lijun Ma
Magnetic collimation and metal foil filtering for electron range and fluence modulation.
Medical physics 2004;31(1):17-23.
2003: Lijun Ma; Nakorn Phaisangittisakul; Cedric Yu; Mehrdad Sarfaraz
A quality assurance method for analyzing and verifying intensity modulated fields.
Medical physics 2003;30(8):2082-8.
2003: Lijun Ma; Lawrence S Chin; Steven J DiBiase; Rao P Gullapalli; Andrew Kennedy; J Marc Simard; Robert Slawson
Concomitant boost of stratified target area with gamma knife radiosurgery: a treatment planning study.
American journal of clinical oncology 2003;26(4):e100-5.
2003: Mariana Guerrero; X Allen Li; Lijun Ma
A technique to sharpen the beam penumbra for Gamma Knife radiosurgery.
Physics in medicine and biology 2003;48(12):1843-53.
2002: Lijun Ma
Smoothing intensity-modulated treatment delivery under hardware constraints.
Medical physics 2002;29(12):2937-45.
2002: Nakorn Phaisangittisakul; Lijun Ma
An empirical model for independent dose verification of the Gamma Knife treatment planning.
Medical physics 2002;29(9):1991-7.
2002: Cedric Yu; X Allen Li; Lijun Ma; Dongjun Chen; Shahid A Naqvi; David Shepard; Mehrdad Sarfaraz; Timothy W Holmes; Mohan Suntharalingam; Carl M Mansfield
Clinical implementation of intensity-modulated arc therapy.
International journal of radiation oncology, biology, physics 2002;53(2):453-63.
2002: Matthew A Earl; Lijun Ma
Depth dose enhancement of electron beams subject to external uniform longitudinal magnetic fields: a Monte Carlo study.
Medical physics 2002;29(4):484-91.
2002: Steven J DiBiase; Lawrence S Chin; Lijun Ma
Influence of gamma knife radiosurgery on the quality of life in patients with brain metastases.
American journal of clinical oncology 2002;25(2):131-4.
2001: Lijun Ma; Cedric Yu; Matthew A Earl; Timothy W Holmes; Mehrdad Sarfaraz; X Allen Li; David Shepard; Pradip Amin; Steven J DiBiase; Mohan Suntharalingam; Carl M Mansfield
Optimized intensity-modulated arc therapy for prostate cancer treatment.
International journal of cancer. Journal international du cancer 2001;96(6):379-84.
2001: Lijun Ma
Dependence of normal brain integral dose and normal tissue complication probability on the prescription isodose values for gamma-knife radiosurgery.
Physics in medicine and biology 2001;46(11):3031-41.
2001: X Allen Li; Lijun Ma; Shahid A Naqvi; Rompin Shih; Cedric Yu
Monte Carlo dose verification for intensity-modulated arc therapy.
Physics in medicine and biology 2001;46(9):2269-82.
2001: Lawrence S Chin; Lijun Ma; Steven J DiBiase
Radiation necrosis following gamma knife surgery: a case-controlled comparison of treatment parameters and long-term clinical follow up.
Journal of neurosurgery 2001;94(6):899-904.
2000: David Shepard; M C Ferris; Roger Ove; Lijun Ma
Inverse treatment planning for Gamma Knife radiosurgery.
Medical physics 2000;27(12):2748-56.
2000: C-M Charlie Ma; Todd Pawlicki; SB Jiang; JS Li; J Deng; EC Mok; A Kapur; Lei Xing; Lijun Ma; Arthur L Boyer
Monte Carlo verification of IMRT dose distributions from a commercial treatment planning optimization system.
Physics in medicine and biology 2000;45(9):2483-95.
2000: Lei Xing; Z Lin; Sarah S Donaldson; Quynh-Thu Le; D Tate; Don R Goffinet; Suzanne L Wolden; Lijun Ma; Arthur L Boyer
Dosimetric effects of patient displacement and collimator and gantry angle misalignment on intensity modulated radiation therapy.
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology 2000;56(1):97-108.
2000: Lijun Ma; Lawrence S Chin; David Shepard; Pradip Amin; Robert Slawson
The effect of user-defined variables on dosimetry consistency in Gamma Knife planning.
Physics in medicine and biology 2000;45(5):N43-47.
2000: Lijun Ma; Cedric Yu; Mehrdad Sarfaraz
A dosimetric leaf-setting strategy for shaping radiation fields using a multileaf collimator.
Medical physics 2000;27(5):972-7.
2000: Lijun Ma; X Allen Li; Cedric Yu
An efficient method of measuring the 4 mm helmet output factor for the Gamma knife.
Physics in medicine and biology 2000;45(3):729-33.
2000: Lijun Ma; Lawrence S Chin; Mehrdad Sarfaraz; David Shepard; Cedric Yu
An investigation of eye lens dose for gamma knife treatments of trigeminal neuralgia.
Journal of applied clinical medical physics / American College of Medical Physics 2000;1(4):116-9.
1999: Lijun Ma; Ping Xia; Lynn J Verhey; Arthur L Boyer
A dosimetric comparison of fan-beam intensity modulated radiotherapy with Gamma Knife stereotactic radiosurgery for treating intermediate intracranial lesions.
International journal of radiation oncology, biology, physics 1999;45(5):1325-30.
1999: Lijun Ma; Arthur L Boyer; C-M Charlie Ma; Lei Xing
Synchronizing dynamic multileaf collimators for producing two-dimensional intensity-modulated fields with minimum beam delivery time.
International journal of radiation oncology, biology, physics 1999;44(5):1147-54.
1999: Lei Xing; B Curran; R Hill; T Holmes; Lijun Ma; Kenneth Forster; Arthur L Boyer
Dosimetric verification of a commercial inverse treatment planning system.
Physics in medicine and biology 1999;44(2):463-78.
1998: Lijun Ma; Arthur L Boyer; David Findley; PB Geis; EC Mok
Application of a video-optical beam imaging system for quality assurance of medical accelerators.
Physics in medicine and biology 1998;43(12):3649-59.
1998: Lijun Ma; Arthur L Boyer; Lei Xing; C-M Charlie Ma
An optimized leaf-setting algorithm for beam intensity modulation using dynamic multileaf collimators.
Physics in medicine and biology 1998;43(6):1629-43.
1998: Lijun Ma; W Chang; M Lau-Chin; E M Tate; Arthur L Boyer
Using static MLC fields to replace partial transmission cerrobend blocks in treatment planning of rectal carcinoma cases.
Medical dosimetry : official journal of the American Association of Medical Dosimetrists 1998;23(4):264-6.
1997: Lijun Ma; PB Geis; Arthur L Boyer
Quality assurance for dynamic multileaf collimator modulated fields using a fast beam imaging system.
Medical physics 1997;24(8):1213-20.