Carlos Esquivel

Summary

Affiliation: University of Texas Health Science Center
Country: USA

Publications

  1. ncbi request reprint Three dimensional intensity modulated brachytherapy (IMBT): dosimetry algorithm and inverse treatment planning
    Chengyu Shi
    Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA
    Med Phys 37:3725-37. 2010
  2. pmc Novel low-kVp beamlet system for choroidal melanoma
    Carlos Esquivel
    Cancer Therapy and Research Center, San Antonio, TX, USA
    Radiat Oncol 1:36. 2006
  3. doi request reprint Monte Carlo modeling of a Novalis Tx Varian 6 MV with HD-120 multileaf collimator
    Luis Alberto Vazquez-Quino
    Cancer Therapy and Research Center, Department of Radiation Oncology, University of Texas Health Science Center at San Antonio, TX 78229 4427, USA
    J Appl Clin Med Phys 13:3960. 2012
  4. doi request reprint Measurement of neutron dose equivalent outside and inside of the treatment vault of GRID therapy
    Xudong Wang
    University of Texas Health Science Center, San Antonio, Texas 78229, USA
    Med Phys 40:093901. 2013
  5. doi request reprint On the quantification of the dosimetric accuracy of collapsed cone convolution superposition (CCCS) algorithm for small lung volumes using IMRT
    Oscar I Calvo
    Department of Radiation Oncology, School of Medicine, Cancer Therapy and Research Center, The University of Texas Health Science Center San Antonio, TX, USA
    J Appl Clin Med Phys 13:3751. 2012
  6. ncbi request reprint Evaluation of a commercially-available block for spatially fractionated radiation therapy
    Courtney Buckey
    Departments of Radiology and Radiation Oncology, Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
    J Appl Clin Med Phys 11:3163. 2010
  7. doi request reprint Investigating the dosimetric and tumor control consequences of prostate seed loss and migration
    Courtney Knaup
    Department of Radiation Oncology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
    Med Phys 39:3291-8. 2012
  8. doi request reprint Clinical evaluation of an immbolization system for stereotactic body radiotherapy using helical tomotherapy
    Alonso N Gutierrez
    Department of Radiation Oncology, School of Medicine, Cancer Therapy and Research Center, The University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA
    Med Dosim 36:126-9. 2011
  9. doi request reprint Patient specific pre-treatment QA verification using an EPID approach
    Luis A Vazquez Quino
    Cancer Therapy and Research Center, Department of Radiation Oncology, 7979 Wurzbach Rd, University of Texas Health Science Center at San Antonio, TX, 78229, USA
    Technol Cancer Res Treat 13:1-10. 2014
  10. doi request reprint Characterization of a novel 2D array dosimeter for patient-specific quality assurance with volumetric arc therapy
    Sotirios Stathakis
    Department of Radiation Oncology, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA
    Med Phys 40:071731. 2013

Collaborators

Detail Information

Publications16

  1. ncbi request reprint Three dimensional intensity modulated brachytherapy (IMBT): dosimetry algorithm and inverse treatment planning
    Chengyu Shi
    Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA
    Med Phys 37:3725-37. 2010
    ....
  2. pmc Novel low-kVp beamlet system for choroidal melanoma
    Carlos Esquivel
    Cancer Therapy and Research Center, San Antonio, TX, USA
    Radiat Oncol 1:36. 2006
    ..This technique relies on an isocentric rotational approach to deliver dose to target volumes within the eye, while potentially sparing normal structures...
  3. doi request reprint Monte Carlo modeling of a Novalis Tx Varian 6 MV with HD-120 multileaf collimator
    Luis Alberto Vazquez-Quino
    Cancer Therapy and Research Center, Department of Radiation Oncology, University of Texas Health Science Center at San Antonio, TX 78229 4427, USA
    J Appl Clin Med Phys 13:3960. 2012
    ..The Monte Carlo model developed in this study accurately represents the new Novalis Tx Varian linac with HD-MLC and can be used for reliable patient dose calculations...
  4. doi request reprint Measurement of neutron dose equivalent outside and inside of the treatment vault of GRID therapy
    Xudong Wang
    University of Texas Health Science Center, San Antonio, Texas 78229, USA
    Med Phys 40:093901. 2013
    ..To evaluate the neutron and photon dose equivalent rates at the treatment vault entrance (Hn,D and HG), and to study the secondary radiation to the patient in GRID therapy. The radiation activation on the grid was studied...
  5. doi request reprint On the quantification of the dosimetric accuracy of collapsed cone convolution superposition (CCCS) algorithm for small lung volumes using IMRT
    Oscar I Calvo
    Department of Radiation Oncology, School of Medicine, Cancer Therapy and Research Center, The University of Texas Health Science Center San Antonio, TX, USA
    J Appl Clin Med Phys 13:3751. 2012
    ..7% in both phantoms. The profiles show a good agreement between Pinnacle3, Monte Carlo, and EDR2 film. The gamma index and the isodose lines support the result...
  6. ncbi request reprint Evaluation of a commercially-available block for spatially fractionated radiation therapy
    Courtney Buckey
    Departments of Radiology and Radiation Oncology, Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
    J Appl Clin Med Phys 11:3163. 2010
    ..We believe this compensator can be put to clinical use, and will allow more centers to offer GRID therapy to their patients...
  7. doi request reprint Investigating the dosimetric and tumor control consequences of prostate seed loss and migration
    Courtney Knaup
    Department of Radiation Oncology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
    Med Phys 39:3291-8. 2012
    ..However, once implanted, the seeds are vulnerable to loss and movement. The goal of this work is to investigate the dosimetric and radiobiological effects of the types of seed loss and migration commonly seen in prostate brachytherapy...
  8. doi request reprint Clinical evaluation of an immbolization system for stereotactic body radiotherapy using helical tomotherapy
    Alonso N Gutierrez
    Department of Radiation Oncology, School of Medicine, Cancer Therapy and Research Center, The University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA
    Med Dosim 36:126-9. 2011
    ..Based on the findings, image-guided SBRT using the Body Pro-Lokā„¢ system in conjunction with the MVCT of TomoTherapy is capable of minimizing interfractional setup error and improving treatment accuracy...
  9. doi request reprint Patient specific pre-treatment QA verification using an EPID approach
    Luis A Vazquez Quino
    Cancer Therapy and Research Center, Department of Radiation Oncology, 7979 Wurzbach Rd, University of Texas Health Science Center at San Antonio, TX, 78229, USA
    Technol Cancer Res Treat 13:1-10. 2014
    ..The results suggest that MU-EPID can be used clinically for patient specific IMRT QA, providing a comprehensive 3D dosimetric evaluation through DVH comparison as well as an option for a 2D gamma analysis. ..
  10. doi request reprint Characterization of a novel 2D array dosimeter for patient-specific quality assurance with volumetric arc therapy
    Sotirios Stathakis
    Department of Radiation Oncology, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA
    Med Phys 40:071731. 2013
    ..In this study, the authors are evaluating a new, commercially available 2D array that offers 3D dose reconstruction for patient specific intensity modulated radiation therapy quality assurance (IMRT QA)...
  11. doi request reprint Evaluation of localization errors for craniospinal axis irradiation delivery using volume modulated arc therapy and proposal of a technique to minimize such errors
    Pamela Myers
    Department of Radiation Oncology, School of Medicine Cancer Therapy and Research Center, The University of Texas Health Science Center, San Antonio, USA
    Radiother Oncol 108:107-13. 2013
    ....
  12. ncbi request reprint The neutron dose equivalent evaluation and shielding at the maze entrance of a Varian Clinac 23EX treatment room
    Xudong Wang
    University of Texas Health Science Center, San Antonio, Texas 78229, USA
    Med Phys 38:1141-9. 2011
    ..The effectiveness of borated polyethylene (BPE) boards, as a maze wall lining material, on neutron dose and photon dose reduction is also reported...
  13. pmc Evaluation of PTW Seven29 for tomotherapy patient-specific quality assurance and comparison with ScandiDos Delta(4)
    Pamela Myers
    Department of Radiology and Radiation Oncology, Cancer Therapy and Research Center at University of Texas Health Science Center at San Antonio, 7979 Wurzbach Rd, San Antonio, USA
    J Med Phys 37:72-80. 2012
    ..6% (92.5-100.0%) for the Seven29/Octavius. Both the Seven29/Octavius and Delta(4) performed to a high standard of measurement accuracy and had a 90% or greater gamma percent for all plans and were considered clinically acceptable...
  14. ncbi request reprint Consistency and reproducibility of the VMAT plan delivery using three independent validation methods
    Varatharaj Chandraraj
    Department of Radiation Oncology, University of Texas Health Science Center at San Antonio, TX, USA
    J Appl Clin Med Phys 12:3373. 2011
    ..Based on our results, we conclude that the VMAT delivery using a Varian 2100CD linear accelerator equipped with 120 MLC is highly reproducible...
  15. doi request reprint Treatment planning and delivery of IMRT using 6 and 18MV photon beams without flattening filter
    Sotirios Stathakis
    Department of Radiation Oncology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
    Appl Radiat Isot 67:1629-37. 2009
    ..There was however a significant decrease in the number of monitor units required for unflattened beam treatment plans due to the increase in linac output-approximately two times and four times higher for the 6 and 18 MV, respectively...
  16. doi request reprint Dosimetric evaluation of multi-pattern spatially fractionated radiation therapy using a multi-leaf collimator and collapsed cone convolution superposition dose calculation algorithm
    Sotirios Stathakis
    Department of Radiation Oncology, University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA
    Appl Radiat Isot 67:1939-44. 2009
    ..We employ the MLC to deliver various pattern GRID treatments to large solid tumors and dosimetrically characterize the GRID fields...