Srinivasan Vijayakumar

Summary

Affiliation: University of California
Country: USA

Publications

  1. pmc An electronic application for rapidly calculating Charlson comorbidity score
    William H Hall
    University of California, Davis, Department of Radiation Oncology, UC Davis Cancer Center, 4501 X Street, G126, Sacramento, CA 95817, USA
    BMC Cancer 4:94. 2004
  2. ncbi request reprint Clinical trials using chemopreventive vitamin D analogs in breast cancer
    Srinivasan Vijayakumar
    Department of Radiation Oncology, UC Davis Cancer Center, Sacramento, California 95817, USA
    Cancer J 12:445-50. 2006
  3. doi request reprint Evaluating the role of prophylactic gastrostomy tube placement prior to definitive chemoradiotherapy for head and neck cancer
    Allen M Chen
    Department of Radiation Oncology, University of California Davis Cancer Center, Sacramento, CA 95817, USA
    Int J Radiat Oncol Biol Phys 78:1026-32. 2010
  4. doi request reprint The impact of body mass index on heterotopic ossification
    Waleed Fouad Mourad
    Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS, USA
    Int J Radiat Oncol Biol Phys 82:e831-6. 2012
  5. doi request reprint Head and neck cancer among lifelong never-smokers and ever-smokers: matched-pair analysis of outcomes after radiation therapy
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, CA, USA
    Am J Clin Oncol 34:270-5. 2011
  6. doi request reprint Initial clinical experience with helical tomotherapy for head and neck cancer
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, California 95817, USA
    Head Neck 31:1571-8. 2009
  7. doi request reprint Improved dosimetric and clinical outcomes with intensity-modulated radiotherapy for head-and-neck cancer of unknown primary origin
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, CA 95817, USA
    Int J Radiat Oncol Biol Phys 79:756-62. 2011
  8. doi request reprint Tobacco smoking during radiation therapy for head-and-neck cancer is associated with unfavorable outcome
    Allen M Chen
    Department of Radiation Oncology, University of California Davis Cancer Center, Sacramento, CA, USA
    Int J Radiat Oncol Biol Phys 79:414-9. 2011
  9. ncbi request reprint Comparison of intensity-modulated radiotherapy using helical tomotherapy and segmental multileaf collimator-based techniques for nasopharyngeal carcinoma: dosimetric analysis incorporating quality assurance guidelines from RTOG 0225
    Allen M Chen
    Departments of Radiation Oncology, University of California Davis Cancer Center, 4501 X Street, Suite G140, Sacramento, CA, USA
    Technol Cancer Res Treat 9:291-8. 2010
  10. doi request reprint Marginal misses after postoperative intensity-modulated radiotherapy for head and neck cancer
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, California 95817, USA
    Int J Radiat Oncol Biol Phys 80:1423-9. 2011

Collaborators

Detail Information

Publications44

  1. pmc An electronic application for rapidly calculating Charlson comorbidity score
    William H Hall
    University of California, Davis, Department of Radiation Oncology, UC Davis Cancer Center, 4501 X Street, G126, Sacramento, CA 95817, USA
    BMC Cancer 4:94. 2004
    ..Unfortunately, the use of such scales has yet to be widely integrated into either clinical practice or clinical trials research...
  2. ncbi request reprint Clinical trials using chemopreventive vitamin D analogs in breast cancer
    Srinivasan Vijayakumar
    Department of Radiation Oncology, UC Davis Cancer Center, Sacramento, California 95817, USA
    Cancer J 12:445-50. 2006
    ..This has led to the development of less calcemic analogs of vitamin D. We review the clinical trials with breast cancer patients using vitamin D analogs...
  3. doi request reprint Evaluating the role of prophylactic gastrostomy tube placement prior to definitive chemoradiotherapy for head and neck cancer
    Allen M Chen
    Department of Radiation Oncology, University of California Davis Cancer Center, Sacramento, CA 95817, USA
    Int J Radiat Oncol Biol Phys 78:1026-32. 2010
    ..To determine the effect of prophylactic gastrostomy tube (GT) placement on acute and long-term outcome for patients treated with definitive chemoradiotherapy for locally advanced head and neck cancer...
  4. doi request reprint The impact of body mass index on heterotopic ossification
    Waleed Fouad Mourad
    Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS, USA
    Int J Radiat Oncol Biol Phys 82:e831-6. 2012
    ..To analyze the impact of different body mass index (BMI) as a surrogate marker for heterotopic ossification (HO) in patients who underwent surgical repair (SR) for displaced acetabular fractures (DAF) followed by radiation therapy (RT)...
  5. doi request reprint Head and neck cancer among lifelong never-smokers and ever-smokers: matched-pair analysis of outcomes after radiation therapy
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, CA, USA
    Am J Clin Oncol 34:270-5. 2011
    ..The purpose of this analysis was to compare the clinical outcomes between patients without a history of smoking (never-smokers) and those with a previous history of smoking (ever-smokers) treated by radiation therapy...
  6. doi request reprint Initial clinical experience with helical tomotherapy for head and neck cancer
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, California 95817, USA
    Head Neck 31:1571-8. 2009
    ..To report a single-institutional experience with the use of helical tomotherapy (HT)-based intensity-modulated radiotherapy (IMRT) for head and neck cancer...
  7. doi request reprint Improved dosimetric and clinical outcomes with intensity-modulated radiotherapy for head-and-neck cancer of unknown primary origin
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, CA 95817, USA
    Int J Radiat Oncol Biol Phys 79:756-62. 2011
    ....
  8. doi request reprint Tobacco smoking during radiation therapy for head-and-neck cancer is associated with unfavorable outcome
    Allen M Chen
    Department of Radiation Oncology, University of California Davis Cancer Center, Sacramento, CA, USA
    Int J Radiat Oncol Biol Phys 79:414-9. 2011
    ..To evaluate the effect of continued cigarette smoking among patients undergoing radiation therapy for head-and-neck cancer by comparing the clinical outcomes among active smokers and quitters...
  9. ncbi request reprint Comparison of intensity-modulated radiotherapy using helical tomotherapy and segmental multileaf collimator-based techniques for nasopharyngeal carcinoma: dosimetric analysis incorporating quality assurance guidelines from RTOG 0225
    Allen M Chen
    Departments of Radiation Oncology, University of California Davis Cancer Center, 4501 X Street, Suite G140, Sacramento, CA, USA
    Technol Cancer Res Treat 9:291-8. 2010
    ..02), larynx (p = 0.03), and oral cavity (p = 0.03). These findings suggest that HT-IMRT may be of improve the therapeutic ratio in the radiotherapeutic treatment of nasopharyngeal carcinoma...
  10. doi request reprint Marginal misses after postoperative intensity-modulated radiotherapy for head and neck cancer
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, California 95817, USA
    Int J Radiat Oncol Biol Phys 80:1423-9. 2011
    ..To describe the spatial distribution of local-regional recurrence (LRR) among patients treated postoperatively with intensity-modulated radiotherapy (IMRT) for head and neck cancer...
  11. doi request reprint The influence of pregnancy on heterotopic ossification post-displaced acetabular fractures surgical repair
    Waleed F Mourad
    Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, Mississippi, USA
    J Orthop Res 31:944-8. 2013
    ..Our data suggest that pregnancy may be associated with a reduced risk of HO after SR of displaced acetabular fractures. Further analysis with a larger pregnant patient sample is necessary to confirm this finding...
  12. doi request reprint Potential of helical tomotherapy to reduce dose to the ocular structures for patients treated for unresectable sinonasal cancer
    Allen M Chen
    Department of Radiation Oncology, University of California Davis Cancer Center, Sacramento, CA, USA
    Am J Clin Oncol 33:595-8. 2010
    ..To compare intensity-modulated radiotherapy (IMRT) treatment plans generated by segmental multileaf collimator (SMLC) and helical tomotherapy (HT) techniques for patients with unresectable sinonasal cancer...
  13. ncbi request reprint Clinical trials involving vitamin D analogs in prostate cancer
    Srinivasan Vijayakumar
    Department of Radiation Oncology, University of California, Davis Medical Center, Sacramento, California 95817, USA
    Cancer J 11:362-73. 2005
    ..quot; Abstracts from recent international meetings were also reviewed but were only included when they were the only known reference to the clinical trial or the research mentioned. Only papers published in English were included...
  14. doi request reprint Development and validation of a standardized method for contouring the brachial plexus: preliminary dosimetric analysis among patients treated with IMRT for head-and-neck cancer
    William H Hall
    Department of Radiation Oncology, University of California, Davis, Cancer Center, Sacramento, CA, USA
    Int J Radiat Oncol Biol Phys 72:1362-7. 2008
    ....
  15. doi request reprint Prospective evaluation to establish a dose response for clinical oral mucositis in patients undergoing head-and-neck conformal radiotherapy
    Samir Narayan
    Department of Radiation Oncology, University of California Davis Medical Center, Sacramento, CA, USA
    Int J Radiat Oncol Biol Phys 72:756-62. 2008
    ..The main objective is to establish a quantitative dose response for clinical oral mucositis...
  16. doi request reprint Primary radiation therapy for head-and-neck cancer in the setting of human immunodeficiency virus
    Emily A Klein
    Department of Radiation Oncology, University of California Davis Cancer Center, Sacramento, CA, USA
    Int J Radiat Oncol Biol Phys 79:60-4. 2011
    ..To analyze outcomes after radiation therapy for head-and-neck cancer among a cohort of patients with human immunodeficiency virus (HIV)...
  17. doi request reprint Late esophageal toxicity after radiation therapy for head and neck cancer
    Allen M Chen
    Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, California 95817, USA
    Head Neck 32:178-83. 2010
    ..The aim of this study was to determine the incidence of esophageal toxicity after radiation therapy for head and neck cancer...
  18. doi request reprint Misses and near-misses after postoperative radiation therapy for head and neck cancer: Comparison of IMRT and non-IMRT techniques in the CT-simulation era
    Allen M Chen
    Department of Radiation Oncology, Head and Neck Surgery, University of California Davis School of Medicine, Sacramento, CA 95817, USA
    Head Neck 32:1452-9. 2010
    ....
  19. doi request reprint Utility of megavoltage fan-beam CT for treatment planning in a head-and-neck cancer patient with extensive dental fillings undergoing helical tomotherapy
    Claus Yang
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, USA
    Med Dosim 35:108-14. 2010
    ..MV-FBCT may be useful in radiation treatment planning for nasopharyngeal cancer patients in the setting of extensive dental artifacts...
  20. ncbi request reprint Introducing new technologies into the clinic
    Srinivasan Vijayakumar
    Department of Radiation Oncology, University of California, Davis Cancer Center, Sacramento, CA 95417, USA
    Front Radiat Ther Oncol 40:180-92. 2007
    ..These concepts, applied in prostate cancer in this communication, have wider applications in other disease sites and in the introduction of technologies beyond intensity-modulated radiation therapy...
  21. doi request reprint Palliative radiation therapy for head and neck cancer: toward an optimal fractionation scheme
    Allen M Chen
    Department of Radiation Oncology, University of California Davis School of Medicine, Sacramento, California 95817, USA
    Head Neck 30:1586-91. 2008
    ..To analyze the efficacy of various fractionation schedules for the palliation of head and neck cancer with radiation therapy...
  22. ncbi request reprint RTOG 94-06: is the addition of neoadjuvant hormonal therapy to dose-escalated 3D conformal radiation therapy for prostate cancer associated with treatment toxicity?
    Richard K Valicenti
    Department of Radiation Oncology, Jefferson Medical College and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
    Int J Radiat Oncol Biol Phys 57:614-20. 2003
    ..This study determines the effect on toxicity of adding neoadjuvant hormonal therapy (NHT) to three-dimensional conformal radiation therapy (3D-CRT) in RTOG 94-06...
  23. pmc Lack of Cetuximab induced skin toxicity in a previously irradiated field: case report and review of the literature
    Madhava R Kanakamedala
    Department of Radiation Oncology, University of Mississippi Medical Center, 350 W Woodrow Wilson Drive 1600, Jackson, MS 39213, USA
    Radiat Oncol 5:38. 2010
    ..Mutation, amplification or dysregulation of the EGFR family leads to uncontrolled division and predisposes to cancer. Inhibiting the EGFR represents a form of targeted cancer therapy...
  24. ncbi request reprint Designing a randomized phase I/II prostate cancer chemoprevention trial using 1alpha-hydroxy-24-ethyl-cholecalciferol, an analogue of vitamin D3
    S Packianathan
    Department of Radiation Oncology, School of Medicine, University of California at Davis, One Shields Avenue, Davis, California, USA
    Cancer J 10:357-67. 2004
    ....
  25. ncbi request reprint Use of benchmark dose-volume histograms for selection of the optimal technique between three-dimensional conformal radiation therapy and intensity-modulated radiation therapy in prostate cancer
    Chunhui Luo
    Radiation Oncology, University of California Davis Medical Center, Sacramento, CA 95817, USA
    Int J Radiat Oncol Biol Phys 66:1253-62. 2006
    ..3D-CRT in treating localized prostate cancer...
  26. doi request reprint A prolonged time interval between trauma and prophylactic radiation therapy significantly increases the risk of heterotopic ossification
    Waleed F Mourad
    Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS, USA
    Int J Radiat Oncol Biol Phys 82:e339-44. 2012
    ..To ascertain whether the time from injury to prophylactic radiation therapy (RT) influences the rate of heterotopic ossification (HO) after operative treatment of displaced acetabular fractures...
  27. ncbi request reprint Integration of novel therapeutics into combined modality therapy of locally advanced non-small cell lung cancer
    David Gandara
    Department of Internal Medicine, Division of Hematology Oncology and Department of Radiation Oncology, UC Davis Cancer Center, University of California Davis Medical Center, 4501 X Street, Sacramento, CA 95817, USA
    Clin Cancer Res 11:5057s-5062s. 2005
    ..Here, we describe conceptual issues, preclinical rationale, and ongoing or planned clinical trials incorporating NTAs into current treatment paradigms for unresectable stage III NSCLC...
  28. pmc A systematic and evidence-based approach to the management of vertebral metastasis
    Richard L S Jennelle
    Department of Radiation Oncology, University of Mississippi Medical Center, 2500 N State Street, Jackson, MS 39216, USA
    ISRN Surg 2011:719715. 2011
    ..This paper provides a series of tools as well as guidance in selecting effective and evidence-based therapy individualized to the specific patient...
  29. doi request reprint Prospective study of psychosocial distress among patients undergoing radiotherapy for head and neck cancer
    Allen M Chen
    Department of Radiation Oncology, University of California, Davis, Cancer Center, Sacramento, CA, USA
    Int J Radiat Oncol Biol Phys 73:187-93. 2009
    ..To determine the prevalence of psychosocial distress among patients undergoing radiotherapy (RT) for head and neck cancer and to examine the association between depression and anxiety and demographic and medical variables...
  30. ncbi request reprint Impact of radioimmunoscintigraphy on definition of clinical target volume for radiotherapy after prostatectomy
    Ashesh B Jani
    Department of Radiation and Cellular Oncology, University of Chicago Hospitals, 5758 S Maryland Avenue, MC 9006, Chicago, IL 60637, USA
    J Nucl Med 45:238-46. 2004
    ..The goal of this study was to evaluate the role of radioimmunoscintigraphy (RIS) directed against prostate-specific membrane antigen in modifying postprostatectomy prostate fossa clinical target volume (CTV) definition...
  31. ncbi request reprint A critical review of variables affecting the accuracy and false-negative rate of sentinel node biopsy procedures in early breast cancer
    Vani Vijayakumar
    Nuclear Medicine Section, Department of Radiology, University of Texas Medical Branch, Galveston, Texas 77555 0793, USA
    Nucl Med Commun 26:395-405. 2005
    ..In this review, the factors that influence the success of different techniques are examined, and studies which have investigated false-negative rates and/or sentinel lymph node identification rates are summarized...
  32. ncbi request reprint Biological effective dose for comparison and combination of external beam and low-dose rate interstitial brachytherapy prostate cancer treatment plans
    Ashesh B Jani
    Department of Radiation and Cellular Oncology and Urology, University of Chicago Hospitals Chicago, IL USA
    Med Dosim 29:42-8. 2004
    ..The results of this analysis can assist physicians in quantitatively determining the best combination and weighting of radiation treatment modalities for individual patients...
  33. ncbi request reprint Influence of radioimmunoscintigraphy on postprostatectomy radiotherapy treatment decision making
    Ashesh B Jani
    Department of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois, USA
    J Nucl Med 45:571-8. 2004
    ..The aim of this study was to evaluate the role of radioimmunoscintigraphy (RIS) directed against prostate-specific membrane antigen (PSMA) in influencing postradical retropubic prostatectomy (RRP) radiotherapy (RT) decision making...
  34. ncbi request reprint Genome-wide linkage of 77 families from the African American Hereditary Prostate Cancer study (AAHPC)
    Agnes B Baffoe-Bonnie
    Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
    Prostate 67:22-31. 2007
    ..The African American Hereditary Prostate Cancer (AAHPC) Study was designed to recruit families with early-onset disease fulfilling criteria of >or=4 affected...
  35. ncbi request reprint The application of number needed to treat (NNT) to clinical problems in radiotherapy
    Ashesh B Jani
    Department of Radiation and Cellular Oncology, University of Chicago, 5758 S Maryland Ave, MC 9006, Chicago, IL 60637, USA
    Cancer Invest 22:262-70. 2004
    ....
  36. ncbi request reprint Is there an association between multiple myeloma and prostate cancer?
    Johnny Kao
    Department of Radiation and Cellular Oncology, University of Chicago, 5758 South Maryland Avenue, MC 9006, Chicago, IL 60637, USA
    Med Hypotheses 63:226-31. 2004
    ....
  37. ncbi request reprint Radioimmunoscintigraphy for postprostatectomy radiotherapy: analysis of toxicity and biochemical control
    Ashesh B Jani
    Department of Radiation and Cellular Oncology, University of Chicago, Illinois, USA
    J Nucl Med 45:1315-22. 2004
    ..Our goal was to evaluate the role of radioimmunoscintigraphy (RIS) directed against prostate-specific membrane antigen (PSMA) in influencing postprostatectomy radiotherapy (RT) toxicity and biochemical control...
  38. ncbi request reprint A Phase I trial of TNFerade biologic in patients with soft tissue sarcoma in the extremities
    Arno J Mundt
    University of Chicago Medical Center, Chicago, Illinois, USA
    Clin Cancer Res 10:5747-53. 2004
    ..The objective of this study was to assess the tolerance of combining TNFerade and radiation therapy in patients with soft tissue sarcomas of the extremity...
  39. pmc Biological-effective versus conventional dose volume histograms correlated with late genitourinary and gastrointestinal toxicity after external beam radiotherapy for prostate cancer: a matched pair analysis
    Ashesh B Jani
    Department of Radiation and Cellular Oncology, University of Chicago Hospitals, Chicago, USA
    BMC Cancer 3:16. 2003
    ....
  40. doi request reprint Association of HPC2/ELAC2 and RNASEL non-synonymous variants with prostate cancer risk in African American familial and sporadic cases
    Christiane M Robbins
    Translational Genomics Research Institute, Division of Integrated Cancer Genomics, Phoenix, Arizona 85004, USA
    Prostate 68:1790-7. 2008
    ..The RNASEL and HPC2/ELAC2 genes have been implicated in hereditary prostate cancer. Further assessment of the role of these genes in sporadic prostate cancer in African American men (AAM) is warranted...
  41. ncbi request reprint Analysis of influence of age on acute and chronic radiotherapy toxicity in treatment of prostate cancer
    Ashesh B Jani
    Department of Radiation and Cellular Oncology, University of Chicago Hospitals, Chicago, Illinois 60637, USA
    Urology 65:1157-62. 2005
    ..Improved understanding of the influence of age on toxicity outcome after RT for prostate cancer can assist in treatment decision-making...
  42. ncbi request reprint Knowledge of hereditary prostate cancer among high-risk African American men
    Sally Weinrich
    School of Nursing, Medical College of Georgia, Augusta, USA
    Oncol Nurs Forum 34:854-60. 2007
    ..To measure knowledge of hereditary prostate cancer in a group of high-risk African American men...
  43. pmc The management of painful bone metastases with an emphasis on radionuclide therapy
    Darren J Hillegonds
    Lawrence Livermore National Laboratory, Center for Accelerator Mass, Spectrometry, Livermore, CA, USA
    J Natl Med Assoc 99:785-94. 2007
    ..This review provides an update on the management of painful bone metastases, with an emphasis on radionuclide therapy, and introduces oligometastases and quantitative imaging evaluations for clinical trials...
  44. ncbi request reprint Impact of hormone therapy when combined with external beam radiotherapy for early-stage, intermediate-, or high-risk prostate cancer
    Ashesh B Jani
    Department of Radiation and Cellular Oncology, University of Chicago, IL, USA
    Am J Clin Oncol 26:382-5. 2003
    ..27.0%). Thus, biochemical failure decreased with the administration of hormone therapy in this group of patients with early stage, intermediate- or high-risk prostate cancer. This finding requires validation by ongoing randomized trials...