Research Topics
| J S LiSummaryAffiliation: Fox Chase Cancer Center Country: USA Publications
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Detail Information
Publications
Verification of IMRT dose distributions using a water beam imaging systemJ S Li
Department of Radiation Oncology, Stanford University School of Medicine, California 94305 5304, USA
Med Phys 28:2466-74. 2001..The proposed approach makes it possible to carry out a real-time comparison of the dose distribution in a transverse plane between the measurement and the reference when we do an IMRT dose verification...- Clinical implementation of intensity-modulated tangential beam irradiation for breast cancerJ S Li
Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
Med Phys 31:1023-31. 2004..The IMRT technique has been proven practical for breast treatment clinically. The results showed that tangential IMRT improved the dose homogeneity in the breast and reduced the dose to the lung and heart... - A particle track-repeating algorithm for proton beam dose calculationJ S Li
Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Phys Med Biol 50:1001-10. 2005..The differences between them were within 2%. The new algorithm was about 13 times faster than the GEANT3 Monte Carlo code for a uniform phantom geometry and over 700 times faster for a heterogeneous phantom geometry... - Energy- and intensity-modulated electron beams for radiotherapyC M Ma
Department of Radiation Oncology, Stanford University School of Medicine, CA 94305 5304, USA
Phys Med Biol 45:2293-311. 2000..To demonstrate the potential of MERT for target dose coverage and normal tissue sparing for treatment of superficial targets, treatment plans for a hypothetical treatment were compared using photon beams and MERT... - Effect of statistical uncertainties on Monte Carlo treatment planningC M Ma
Radiation Oncology Department, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Phys Med Biol 50:891-907. 2005..We provide practical guidelines for the clinical implementation of Monte Carlo treatment planning and show realistic examples of Monte Carlo based IMRT and MERT plans... - Monte Carlo verification of IMRT dose distributions from a commercial treatment planning optimization systemC M Ma
Radiation Oncology Department, Stanford University School of Medicine, CA 94305, USA
Phys Med Biol 45:2483-95. 2000.... - Ultra-thin TLDs for skin dose determination in high energy photon beamsS Stathakis
Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Phys Med Biol 51:3549-67. 2006..Knowing the dose received at the surface of the patient can lead to prediction of skin reactions helping with the design of new treatment techniques and alternative dose fractionation schemes... - Modelling of electron contamination in clinical photon beams for Monte Carlo dose calculationJ Yang
Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA 191 11, USA
Phys Med Biol 49:2657-73. 2004..The Monte Carlo calculated dose distributions were compared with measured data. Our results showed good agreement (less than 2% or 2 mm) for 6, 10 and 18 MV photon beams... - Intensity modulated radiation therapy using laser-accelerated protons: a Monte Carlo dosimetric studyE Fourkal
Radiation Oncology Department, Fox Chase Cancer Center, 7701 Borehole Avenue, Philadelphia 19111, USA
Phys Med Biol 48:3977-4000. 2003..It is shown that for a two-beam arrangement (parallel-opposed) it is possible to achieve both superior target coverage with 5% dose inhomogeneity within the target and excellent sparing of surrounding tissue... - A comparative dosimetric study on tangential photon beams, intensity-modulated radiation therapy (IMRT) and modulated electron radiotherapy (MERT) for breast cancer treatmentC M Ma
Department of Radiation Oncology Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Phys Med Biol 48:909-24. 2003..It is concluded that MERT has superior capabilities to achieve dose conformity both laterally and in the depth direction, which will be well suited for treating superficial targets such as breast cancer... - Particle selection for laser-accelerated proton therapy feasibility studyE Fourkal
Radiation Oncology Department, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
Med Phys 30:1660-70. 2003..The calculations presented in this article show that the dose rate that the selection system can yield is on the order of D=260 Gy/min for a field size of 1 x 1 cm2... 
Dosimetric verification of modulated electron radiotherapy delivered using a photon multileaf collimator for intact breastsL Jin
Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Phys Med Biol 53:6009-25. 2008..We conclude that our in-house MC treatment planning system is capable of performing treatment planning and accurate dose calculations for MERT using the pMLC to deliver radiation therapy to the intact breast...- A quality assurance phantom for IMRT dose verificationC M Ma
Radiation Oncology Department, Stanford University School of Medicine, Stanford, CA 94305, USA
Phys Med Biol 48:561-72. 2003..The QA phantom has been integrated as a routine QA procedure for the patient's IMRT dose verification at Stanford since 1999... - Validation of a Monte Carlo dose calculation tool for radiotherapy treatment planningJ S Li
Department of Radiation Oncology, Stanford University School of Medicine, CA 94305, USA
Phys Med Biol 45:2969-85. 2000..The agreement was within 1.0%. Our results demonstrate that MCDOSE is accurate and efficient for routine dose calculation in radiotherapy treatment planning, with or without beam modifiers... - Dosimetric evaluation of MRI-based treatment planning for prostate cancerL Chen
Radiation Oncology Department, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Phys Med Biol 49:5157-70. 2004..The difference in the target dose between CT- and MRI-based plans using homogeneous geometry was within 2.5%. Our results suggest that MRI-based treatment planning is suitable for radiotherapy of prostate cancer... - Monitor unit calculation for Monte Carlo treatment planningC M Ma
Radiation Oncology Department, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Phys Med Biol 49:1671-87. 2004..It is also used for absolute dose calculations using Monte Carlo simulations for treatment verification, which has become part of our comprehensive IMRT quality assurance programme... - Investigation of pulsed low dose rate radiotherapy using dynamic arc delivery techniquesC M Ma
Radiation Oncology Department, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Phys Med Biol 57:4613-26. 2012..7 ± 4.0 cGy min⁻¹... - Particle in cell simulation of laser-accelerated proton beams for radiation therapyE Fourkal
Radiation Oncology Department, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
Med Phys 29:2788-98. 2002..Because of the broad energy and angular spectra of the protons, a compact particle selection and beam collimation system will be needed to generate small beams of polyenergetic protons for intensity modulated proton therapy... - A Monte Carlo dose calculation tool for radiotherapy treatment planningC M Ma
Radiation Oncology Department, Stanford University School of Medicine, CA 94305, USA
Phys Med Biol 47:1671-89. 2002..The effect of energy cut-offs for particle transport was investigated. Variance reduction techniques were implemented in MCDOSE to achieve a speedup factor of 10-30 compared to DOSXYZ... - Improved method for determination of abamectin and ivermectin in cattle plasmaG Z Wei
China Agricultural University, College of Veterinary Medicine, Department of Veterinary Pharmacology and Toxicology, Beijing, People's Republic of China
J AOAC Int 84:1730-4. 2001..Recoveries ranged from 91.2 to 100.7% for IVM and from 87.0 to 98.7% for ABM, with 1-50 ng/mL fortified samples. The coefficients of variation were <10.1%. The limit of detection was 0.02 ng/mL for ABM and IVM in 1.0 mL samples... - In vitro behavior of osteoblast-like cells on PLLA films with a biomimetic apatite or apatite/collagen composite coatingY Chen
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Hum, Hong Kong, China
J Mater Sci Mater Med 19:2261-8. 2008..The apatite/collagen composite coating appears to be promising for the surface modification of PLLA-based devices with much improved interactions with osteoblastic cells... - Multiple probes reveal a native-like intermediate during low-temperature refolding of ubiquitinE Larios
Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
J Mol Biol 340:115-25. 2004..We suggest that ubiquitin forms a compact ensemble with native-like secondary structure, but without tight packing, long before the native state... - Aged endothelial nitric oxide synthase knockout mice exhibit higher mortality concomitant with impaired open-field habituation and alterations in forebrain neurotransmitter levelsE Dere
Institute of Physiological Psychology, Center for Biological and Medical Research, University of Düsseldorf D 40225 Düsseldorf, Germany
Genes Brain Behav 1:204-13. 2002..The present findings suggest that mice which survived chronic eNOS-deficiency into old age, show some behavioral and neurochemical phenotypes distinct from adult eNOS-/- mice...