Rebecca M. Howell
Department of Radiation Physics, Division of Radiation Oncology
About Dr. Howell
I am a medical physicist with 20 years of clinical experience, a tenured Professor, certified by the American Board of Radiology in Therapeutic Radiologic Physics, and a Fellow of the American Association of Physicists in Medicine. I direct the Radiation Dosimetry Services (RDS) and the Late Effects Group. Our team includes 16 staff and three graduate students. I am the Deputy Director of the Medical Physics Graduate Program at the MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences.
The Radiation Dosimetry Services (RDS) provides independent peer review of beam output calibrations for external beam radiotherapy machines through a mail audit system. Patient safety is directly linked to accurate beam output. Annually, we monitor ~12,000 beams at >1,200 radiotherapy centers worldwide. We also monitor doses for blood irradiators (blood banks) and offer end-to-end peer review for small animal irradiators (research labs). https://rds.mdanderson.org
The Late Effects Group focuses on radiation therapy (RT)-related late effects. Our studies quantify relationships between doses from RT and late effects in cancer survivors. Dose-response relationships can be used to establish normal tissue objectives for RT treatment planning for individual patients in clinics around the world and to improve clinical practice and survivorship guidelines. My lab developed novel methods to reconstruct organ and body region doses for survivors in studies of multi-institutional national and international cohorts including the Childhood Cancer Survivor Study (CCSS), St. Jude Lifetime, Adult Life after Childhood Cancer in Scandinavia, and Dutch Childhood Oncology Group. We have reconstructed doses for >20,000 survivors.
Present Title & Affiliation
Primary Appointment
Professor (term tenure), Department of Radiation Physics, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
Director, Late Effects Studies, Department of Radiation Physics, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
Director, Radiation Dosimetry Services, Department of Radiation Physics, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
Education & Training
Degree-Granting Education
| 2005 | University of Texas Health Science Center, San Antonio, TX, USA, PHD, Medical Physics |
| 2001 | University of Texas Health Science Center, San Antonio, TX, USA, MS, Medical Physics |
| 1997 | University of Texas at El Paso, El Paso, TX, USA, BS, Chemistry |
Board Certifications
| 2005 | American Board of Radiology - Therapeutic Radiologic Physics |
Experience & Service
Academic Appointments
Associate Professor (with tenure), Department of Radiation Physics, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 2014 - 2020
Faculty (Full), MD Anderson Cancer Center UT Health Graduate School of Biomedical Sciences, Houston, TX, 2007 - Present
Institutional Committee Activities
Alternate Member, MD Anderson Cancer Center, UT Health Graduate School of Biomedical Sciences, Membership Committee, 2018 - 2021
Deputy Director, MD Anderson Cancer Center UT Health Graduate School of Biomedical Sciences, Medical Physics Program, 2016 - 2022
Director of Admissions, MD Anderson Cancer Center UT Health Graduate School of Biomedical Sciences, Medical Physics Program, 2014 - 2016
Member, MD Anderson Cancer Center UT Health Graduate School of Biomedical Sciences, Medical Physics Program, Aaron Blanchard Award Nominating Committee, 2013 - 2019
Member, The University of Texas MD Anderson Cancer Center Survivorship Research Advisory Committee, 2012 - 2019
Member, The University of Texas MD Anderson Cancer Center Advisory Board for the Department of Scientific Publications, 2012 - 2018
Member, MD Anderson Cancer Center UT Health Graduate School of Biomedical Sciences, Medical Physics Program, Steering Committee, 2011 - Present
Honors & Awards
| 2017 | President's Recognition for Faculty Excellence Award in Education and Mentorship, The University of Texas M.D. Anderson Cancer Center |
| 2015 | The Gunar K. Zagars Teaching Award for Outstanding Resident Education in Physics, Radiation Biology, or Dosimetry, The University of Texas M. D. Anderson Cancer Center |
| 2015 | Fellow, American Association of Physicists in Medicine |
| 2011 | Editor's Choice, Article in Physics in Medicine & Biology: The clinical impact of the couch top and rails on IMRT and arc therapy, Phys Med Biol 56:7435-7447 |
| 2010 | Editor's Choice, Article in Physics in Medicine & Biology: Risk of second malignant neoplasm following proton versus intensity modulated photon radiotherapy for hepatocellular carcinoma, Phys Med Biol 55:7055-7065 |
| 2009 | Featured article in Physics in Medicine & Biology Highlights of 2009 collection: Treatment vault shielding for a flattening filter-free medical linear accelerator, Phys Med Biol 54(5):1265-73 |
| 2007 | Junior Faculty Enhancement Award, Oakridge Associated University |
Professional Memberships
Selected Publications
Peer-Reviewed Articles
- Friedman DN, Moskowitz CS, Hilden P, Howell RM, Weathers RE, Smith SA, Wolden SL, Tonorezos ES, Mostoufi-Moab S, Chow EJ, Meacham LR, Chou JF, Whitton JA, Leisenring WM, Robison LL, Armstrong GT, Oeffinger KC, Sklar CA. Radiation Dose and Volume to the Pancreas and Subsequent Risk of Diabetes Mellitus. J Natl Cancer Inst 112(5):525-532, 2020. e-Pub 2019. PMID: 31329225.
- Gronberg MP, Tailor RC, Smith SA, Kry SF, Followill DS, Stojadinovic S, Niedzielski JS, Lindsay PE, Krishnan S, Aguirre F, Fujimoto TN, Taniguchi CM, Howell RM. A Mail Audit Independent Peer Review System for Dosimetry Verification of a Small Animal Irradiator. Radiat Res 193(4):341-350, 2020. e-Pub 2020. PMID: 32068498.
- Yeh JM, Ward ZJ, Chaudhry A, Liu Q, Yasui Y, Armstrong GT, Gibson TM, Howell R, Hudson MM, Krull KR, Leisenring WM, Oeffinger KC, Diller L. Life Expectancy of Adult Survivors of Childhood Cancer Over 3 Decades. JAMA Oncol 6(3):350-357, 2020. e-Pub 2020. PMID: 31895405.
- Clark RA, Mostoufi-Moab S, Yasui Y, Vu NK, Sklar CA, Motan T, Brooke RJ, Gibson TM, Oeffinger KC, Howell RM, Smith SA, Lu Z, Robison LL, Chemaitilly W, Hudson MM, Armstrong GT, Nathan PC, Yuan Y. Predicting acute ovarian failure in female survivors of childhood cancer: a cohort study in the Childhood Cancer Survivor Study (CCSS) and the St Jude Lifetime Cohort (SJLIFE). Lancet Oncol 21(3):436-445, 2020. e-Pub 2020. PMID: 32066539.
- Kry SF, Alvarez P, Cygler JE, DeWerd LA, Howell RM, Meeks S, O'Daniel J, Reft C, Sawakuchi G, Yukihara EG, Mihailidis D. AAPM TG 191 Clinical Use of Luminescent Dosimeters: TLDs and OSLDs. Med Phys 47(2):e19-e51, 2020. e-Pub 2019. PMID: 31574174.
- Schonfeld SJ, Howell RM, Smith SA, Neglia JP, Turcotte LM, Arnold MA, Inskip PD, Oeffinger KC, Moskowitz CS, Henderson TO, Leisenring WM, Gibson TM, Berrington de González A, Sampson JN, Chanock SJ, Tucker MA, Bhatia S, Robison LL, Armstrong GT, Morton LM. Comparison of Radiation Dose Reconstruction Methods to Investigate Late Adverse Effects of Radiotherapy for Childhood Cancer: A Report from the Childhood Cancer Survivor Study. Radiat Res 193(2):95-106, 2020. e-Pub 2019. PMID: 31794291.
- Hayek S, Gibson TM, Leisenring WM, Guida JL, Gramatges MM, Lupo PJ, Howell RM, Oeffinger KC, Bhatia S, Edelstein K, Hudson MM, Robison LL, Nathan PC, Yasui Y, Krull KR, Armstrong GT, Ness KK. Prevalence and Predictors of Frailty in Childhood Cancer Survivors and Siblings: A Report From the Childhood Cancer Survivor Study. J Clin Oncol 38(3):JCO1901226, 2020. e-Pub 2019. PMID: 31800343.
- Mulrooney DA, Hyun G, Ness KK, Ehrhardt MJ, Yasui Y, Duprez D, Howell RM, Leisenring WM, Constine LS, Tonorezos E, Gibson TM, Robison LL, Oeffinger KC, Hudson MM, Armstrong GT. Major cardiac events for adult survivors of childhood cancer diagnosed between 1970 and 1999: report from the Childhood Cancer Survivor Study cohort. BMJ 368:l6794, 2020. e-Pub 2020. PMID: 31941657.
- Turcotte LM, Liu Q, Yasui Y, Henderson TO, Gibson TM, Leisenring W, Arnold MA, Howell RM, Green DM, Armstrong GT, Robison LL, Neglia JP. Chemotherapy and Risk of Subsequent Malignant Neoplasms in the Childhood Cancer Survivor Study Cohort. J Clin Oncol 37(34):JCO1900129, 2019. e-Pub 2019. PMID: 31622130.
- Veiga LH, Curtis RE, Morton LM, Withrow DR, Howell RM, Smith SA, Weathers RE, Oeffinger KC, Moskowitz CS, Henderson TO, Arnold MA, Gibson TM, Leisenring WM, Neglia JP, Turcotte LM, Whitton JA, Robison LL, Armstrong GT, Inskip PD, Berrington de Gonzalez A. Association of Breast Cancer Risk After Childhood Cancer With Radiation Dose to the Breast and Anthracycline Use: A Report From the Childhood Cancer Survivor Study. JAMA Pediatr 173(12):1171-1179, 2019. e-Pub 2019. PMID: 31657853.
- Chemaitilly W, Liu Q, van Iersel L, Ness KK, Li Z, Wilson CL, Brinkman TM, Klosky JL, Barnes N, Clark KL, Howell RM, Smith SA, Krasin MJ, Metzger ML, Armstrong GT, Bishop MW, van Santen HM, Pui CH, Srivastava DK, Yasui Y, Hudson MM, Robison LL, Green DM, Sklar CA. Leydig Cell Function in Male Survivors of Childhood Cancer: A Report From the St Jude Lifetime Cohort Study. J Clin Oncol 37(32):JCO1900738, 2019. e-Pub 2019. PMID: 31557085.
- Dietz AC, Seidel K, Leisenring WM, Mulrooney DA, Tersak JM, Glick RD, Burnweit CA, Green DM, Diller LR, Smith SA, Howell RM, Stovall M, Armstrong GT, Oeffinger KC, Robison LL, Termuhlen AM. Solid organ transplantation after treatment for childhood cancer: a retrospective cohort analysis from the Childhood Cancer Survivor Study. Lancet Oncol 20(10):1420-1431, 2019. e-Pub 2019. PMID: 31471158.
- Sapkota Y, Turcotte LM, Ehrhardt MJ, Howell RM, Arnold MA, Wilson CL, Leisenring W, Wang Z, Sampson J, Dagnall CL, Karlins E, Li SA, Hicks BD, Weathers R, Smith SA, Shelton K, Liu Q, Tucker MA, Chanock SJ, Zhang J, Hudson MM, Neglia JP, Armstrong GT, Robison LL, Morton LM, Bhatia S, Yasui Y. Genome-Wide Association Study in irradiated Childhood Cancer Survivors identifies HTR2A for subsequent basal cell carcinoma. J Invest Dermatol 139(9):2042-2045.e8, 2019. e-Pub 2019. PMID: 30910758.
- Howell RM, Smith SA, Weathers RE, Kry SF, Stovall M. Adaptations to a generalized radiation dose reconstruction methodology for use in epidemiologic studies: An update from the MD Anderson Late Effect Group. Radiat Res 192(2):169-188, 2019. e-Pub 2019. PMID: 31211642.
- Moskowitz CS, Chou JF, Neglia JP, Partridge AH, Howell RM, Diller LR, Novetsky Friedman D, Barnea D, Morton LM, Turcotte LM, Arnold MA, Leisenring WM, Armstrong GT, Robison LL, Oeffinger KC, Henderson TO. Mortality After Breast Cancer Among Survivors of Childhood Cancer: A Report From the Childhood Cancer Survivor Study. J Clin Oncol 37(24):2120-2130, 2019. e-Pub 2019. PMID: 31260644.
- Ehrhardt MJ, Howell CR, Hale K, Baassiri MJ, Rodriguez C, Wilson CL, Joshi SS, Lemond TC, Shope S, Howell RM, Wang Z, Srivastava D, Mulrooney DA, Zhang J, Robison LL, Ness KK, Hudson MM. Subsequent breast cancer in female Childhood Cancer Survivors in the St Jude Lifetime Cohort Study (SJLIFE). J Clin Oncol 37(19):1647-1656, 2019. e-Pub 2019. PMID: 31075046.
- Bates JE, Howell RM, Liu Q, Yasui Y, Mulrooney DA, Dhakal S, Smith SA, Leisenring WM, Indelicato DJ, Gibson TM, Armstrong GT, Oeffinger KC, Constine LS. Therapy-related cardiac risk in childhood cancer survivors: An analysis of the childhood cancer survivor study. J Clin Oncol 37(13):1090-1101, 2019. e-Pub 2019. PMID: 30860946.
- Baltz GC, Chi PM, Wong PF, Wang C, Craft DF, Kry SF, Lin SSH, Garden AS, Smith SA, Howell RM. Development and validation of a 3D‐printed bolus cap for total scalp irradiation. J Appl Clin Med Phys 20(3):89-96, 2019. e-Pub 2019. PMID: 30821903.
- Salloum R, Chen Y, Yasui Y, Packer R, Leisenring W, Wells E, King A, Howell R, Gibson TM, Krull KR, Robison LL, Oeffinger KC, Fouladi M, Armstrong GT. Late morbidity and mortality among medulloblastoma survivors diagnosed across three decades: A report from the Childhood Cancer Survivor Study. J Clin Oncol 37(9):731-740, 2019. e-Pub 2019. PMID: 30730781.
- Gibson TM, Mostoufi-Moab S, Stratton KL, Leisenring WM, Barnea D, Chow EJ, Donaldson SS, Howell RM, Hudson MM, Mahajan A, Nathan PC, Ness KK, Sklar CA, Tonorezos ES, Weldon CB, Wells EM, Yasui Y, Armstrong GT, Robison LL, Oeffinger KC. Temporal patterns in the risk of chronic health conditions in survivors of childhood cancer diagnosed 1970-99: a report from the Childhood Cancer Survivor Study cohort. Lancet Oncol 19(12):1590-601, 2018. e-Pub 2018. PMID: 30416076.
- Craft DF, Balter P, Woodward W, Kry SF, Salehpour M, Ger R, Peters M, Baltz G, Traneus E, Howell RM. Design, fabrication, and validation of patient-specific electron tissue compensators for postmastectomy radiation therapy. Physics and Imaging in Radiation Oncology 8:38-43, 2018. PMID: 33458415.
- Madenci AL, Weil BR, Liu Q, Murphy AJ, Gibson TM, Yasui Y, Leisenring WM, Howell RM, Tinkle CL, Nekhlyudov L, Diller LR, Armstrong GT, Oeffinger KC, Weldon CB. Long-term risk of venous thromboembolism in survivors of childhood cancer: A report from the Childhood Cancer Survivor Study (CCSS). J Clin Oncol:JCO2018784595. e-Pub 2018. PMID: 30216123.
- Brooke RJ, Im C, Wilson CL, Krasin MJ, Liu Q, Li Z, Sapkota Y, Moon W, Morton LM, Wu G, Wang Z, Chen W, Howell RM, Armstrong GT, Bhatia S, Mostoufi-Moab S, Seidel K, Chanock SJ, Zhang J, Green DM, Sklar CA, Hudson MM, Robison LL, Chemaitilly W, Yasui Y. A high-risk haplotype for premature menopause in childhood cancer survivors exposed to gonadotoxic therapy. J Natl Cancer Inst 110(8):895-904, 2018. e-Pub 2018. PMID: 29432556.
- Wang Z, Wilson CL, Easton J, Thrasher A, Mulder H, Liu Q, Hedges DJ, Wang S, Rusch MC, Edmonson MN, Levy S, Lanctot JQ, Caron E, Shelton K, Currie K, Lear M, Patel A, Rosencrance C, Shao Y, Vadodaria B, Yergeau D, Sapkota Y, Brooke RJ, Moon W, Rampersaud E, Ma X, Chang TC, Rice SV, Pepper C, Zhou X, Chen X, Chen W, Jones A, Boone B, Ehrhardt MJ, Krasin MJ, Howell RM, Phillips NS, Lewis C, Srivastava D, Pui CH, Kesserwan CA, Wu G, Nichols KE, Downing JR, Hudson MM, Yasui Y, Robison LL, Zhang J. Genetic risk for subsequent neoplasms among long-term survivors of childhood cancer. J Clin Oncol 36(20):JCO2018778589, 2018. e-Pub 2018. PMID: 29847298.
- Kry SF, Peterson CB, Howell RM, Izewska J, Lye J, Clark CH, Nakamura M, Hurkmans C, Alvarez P, Alves A, Bokulic T, Followill D, Kazantsev P, Lowenstein J, Molineu A, Palmer J, Smith SA, Taylor P, Wesolowska P, Williams I. Remote beam output audits: a global assessment of results out of tolerance. phiRO 7:39-44, 2018. e-Pub 2018. PMID: 31872085.
- Weil BR, Madenci AL, Liu Q, Howell RM, Gibson TM, Yasui Y, Neglia JP, Leisenring WM, Smith SA, Tonorezos ES, Friedman DN, Constine LS, Tinkle CL, Diller LR, Armstrong GT, Oeffinger KC, Weldon CB. Late infection-related mortality in asplenic survivors of childhood cancer: A report from the Childhood Cancer Survivor Study (CCSS). J Clin Oncol 36(16):1571-1578, 2018. e-Pub 2018. PMID: 29664715.
- Craft DF, Kry SF, Balter P, Salehpour M, Woodward W, Howell RM. Material matters: Analysis of density uncertainty in 3D printing and its consequences for radiation oncology. Med Phys 45(4):1614-1621, 2018. e-Pub 2018. PMID: 29493803.
- Langballe R, John EM, Malone KE, Bernstein L, Knight JA, Lynch CF, Howell RM, Shore R, Woods M, Concannon P, WECARE Study Collaborative Group, Bernstein JL, Mellemkjær L. Agreement between self-reported and register-based cardiovascular events among danish breast cancer survivors. J Cancer Surviv 12(1):95-100, 2018. e-Pub 2017. PMID: 28963606.
- Morton LM, Sampson JN, Armstrong GT, Chen TH, Hudson MM, Karlins E, Dagnall CL, Li SA, Wilson CL, Srivastava DK, Liu W, Kang G, Oeffinger KC, Henderson TO, Moskowitz CS, Gibson TM, Merino DM, Wong JR, Hammond S, Neglia JP, Turcotte LM, Miller J, Bowen L, Wheeler WA, Leisenring WM, Whitton JA, Burdette L, Chung C, Hicks BD, Jones K, Machiela MJ, Vogt A, Wang Z, Yeager M, Neale G, Lear M, Strong LC, Yasui Y, Stovall M, Weathers RE, Smith SA, Howell R, Davies SM, Radloff GA, Onel K, de González AB, Inskip PD, Rajaraman P, Fraumeni JF, Bhatia S, Chanock SJ, Tucker MA, Robison LL. Genome-wide association study to identify susceptibility loci that modify radiation-related risk for breast cancer after childhood cancer. J Natl Cancer Inst 109(11), 2017. e-Pub 2017. PMID: 29059430.
- Kry SF, Bednarz B, Howell RM, Dauer L, Followill D, Klein E, Paganetti H, Wang B, Wuu CS, Xu XG. AAPM TG 158: Measurement and calculation of doses outside the treated volume from external-beam radiation therapy. Med Phys 44(10):e391-e429, 2017. e-Pub 2017. PMID: 28688159.
- Craft DF, Howell RM. Preparation and fabrication of a full-scale, sagittal-sliced, 3D-printed, patient-specific radiotherapy phantom. J Appl Clin Med Phys 18(5):285-292, 2017. e-Pub 2017. PMID: 28857407.
- Moskowitz CS, Chou JF, Sklar CA, Barnea D, Ronckers CM, Friedman DN, Neglia JP, Turcotte L, Howell RM, Henderson TO, Armstrong GT, Leisenring WM, Robison LL, van Leeuwen FE, Pike MC, Oeffinger KC. Radiation-associated breast cancer and gonadal hormone exposure: a report from the Childhood Cancer Survivor Study (CCSS). Br J Cancer 117(2):290-299, 2017. e-Pub 2017. PMID: 28632729.
- Shaitelman SF, Howell RM, Smith BD. Effects of smoking on late toxicity from breast radiation. J Clin Oncol 35(15):JCO2017722660, 2017. e-Pub 2017. PMID: 28319432.
- Turcotte LM, Liu Q, Yasui Y, Arnold MA, Hammond S, Howell RM, Smith SA, Weathers RE, Henderson TO, Gibson TM, Leisenring W, Armstrong GT, Robison LL, Neglia JP. Temporal trends in treatment and subsequent neoplasm risk among 5-year survivors of childhood cancer, 1970-2015. JAMA 317(8):814-824, 2017. PMID: 28245323.
- Howell RM, Burgett EA, Isaacs D, Price Hedrick SG, Reilly MP, Rankine LJ, Grantham KK, Perkins S, Klein EE. Measured neutron spectra and dose equivalents from a mevion single-room, passively scattered proton system used for craniospinal irradiation. Int J Radiat Oncol Biol Phys 95(1):249-57, 2016. e-Pub 2015. PMID: 27084645.
- Howell RM, Burgett EA. Secondary neutron spectrum from 250-MeV passively scattered proton therapy: measurement with an extended-range bonner sphere system. Med Phys 41(9):092104, 2014. PMID: 25186404.
- Pérez-Andújar A, Newhauser WD, Taddei PJ, Mahajan A, Howell RM. The predicted relative risk of premature ovarian failure for three radiotherapy modalities in a girl receiving craniospinal irradiation. Phys Med Biol 58(10):3107-23, 2013. e-Pub 2013. PMID: 23603657.
- Giebeler A, Newhauser WD, Amos RA, Mahajan A, Homann K, Howell RM. Standardized treatment planning methodology for passively scattered proton craniospinal irradiation. Radiat Oncol 8:32, 2013. e-Pub 2013. PMID: 23375151.
- Han T, Mourtada F, Kisling K, Mikell J, Followill D, Howell R. Experimental validation of deterministic Acuros XB algorithm for IMRT and VMAT dose calculations with the Radiological Physics Center's head and neck phantom. Med Phys 39(4):2193-202, 2012. PMID: 22482641.
- Howell RM, Giebeler A, Koontz-Raisig W, Mahajan A, Etzel CJ, D'Amelio AM, Homann KL, Newhauser WD. Comparison of therapeutic dosimetric data from passively scattered proton and photon craniospinal irradiations for medulloblastoma. Radiat Oncol 7:116, 2012. e-Pub 2012. PMID: 22828073.
- Kry SF, Johnson JL, White RA, Howell RM, Kudchadker RJ, Gillin MT. Neutron-induced electronic failures around a high-energy linear accelerator. Med Phys 38(1):34-9, 2011. PMID: 21361172.
- Howell RM, Burgett EA, Wiegel B, Hertel NE. Calibration of a bonner sphere extension (BSE) for high-energy neutron spectrometry. Radiat Meas 45(10):1233-1237, 2010. PMID: 22888283.
- Howell RM, Scarboro SB, Kry SF, Yaldo DZ. Accuracy of out-of-field dose calculations by a commercial treatment planning system. Phys Med Biol 55(23):6999-7008, 2010. PMID: 21076191.
- Howell RM, Scarboro SB, Taddei PJ, Krishnan S, Kry SF, Newhauser WD. Methodology for determining doses to in-field, out-of-field and partially in-field organs for late effects studies in photon radiotherapy. Phys Med Biol 55(23):7009-23, 2010. PMID: 21076193.
- Scarboro SB, Stovall M, White A, Smith SA, Yaldo D, Kry SF, Howell RM. Effect of organ size and position on out-of-field dose distributions during radiation therapy. Phys Med Biol 55(23):7025-36, 2010. PMID: 21076195.
- Howell RM, Kry SF, Burgett E, Followill D, Hertel NE. Effects of tertiary MLC configuration on secondary neutron spectra from 18-MV x-ray beams for the Varian 21EX linear accelerator. Med Phys 36(9):4039-4046, 2009. PMID: 19810476.
- Kry SF, Howell RM, Salehpour M, Followill DS. Neutron spectra and dose equivalents calculated in tissue for high-energy radiation therapy. Med Phys 36(4):1244-50, 2009. PMID: 19472632.
- Howell RM, Kry SF, Burgett E, Hertel NE, Followill DS. Secondary neutron spectra from modern Varian, Siemens, and Elekta linacs with multileaf collimators. Med Phys 36(9):4027-38, 2009. PMID: 19810475.
- Howell RM, Hertel NE, Wang Z, Hutchinson J, Fullerton GD. Calculation of effective dose from measurements of secondary neutron spectra and scattered photon dose from dynamic MLC IMRT for 6 MV, 15 MV, and 18 MV beam energies. Med Phys 33(2):360-8, 2006. PMID: 16532941.
- Howell RM, Ferenci MS, Hertel NE, Fullerton GD. Investigation of secondary neutron dose for 18 MV dynamic MLC IMRT delivery. Med Phys 32(3):786-93, 2005. PMID: 15839351.
Invited Articles
- Howell RM. Book review: National council on radiation protection and measurements (NCRP) report No. 170, second primary cancers and cardiovascular disease after radiation therapy. Med Phys 39(12):7729-7731, 2012.
Grant & Contract Support
| Title: | Childhood Survivor Cancer Study |
| Funding Source: | NIH/NCI |
| Role: | Principal Investigator-MDACC |
| Title: | Correcting Dose Calculation Errors in Radiation Oncology |
| Funding Source: | NIH/NCI |
| Role: | Co-Investigator |
| Title: | Dosimetry of Therapeutic Radiation Exposure to Patient for NCI Radiation Epidemiology Branch |
| Funding Source: | Social & Scientific Systems, Inc |
| Role: | Principal Investigator-MDACC |
| Title: | Imaging and Radiation Oncology Core - Carbon Ion Supplement |
| Funding Source: | American College of Radiology |
| Role: | Clinical Physicist |
Patient Reviews
CV information above last modified August 30, 2024