William R Geiser, M.S.
Department of Imaging Physics, Division of Diagnostic Imaging - Clinical
About William R Geiser
William Geiser, M.S., DABR, is a Senior Medical Physicist in the Department of Imaging Physics at the University of Texas MD Anderson Cancer Center. He is the Mammography Quality Standards Act (MQSA) physicist of record for MD Anderson Cancer Center Section of Breast Imaging.
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After obtaining his Masters of Science in Imaging Medical Physics at the University of Florida in 1996, he began his career as clinical medical physicist working with the Environmental Health and Safety program at the University of Florida. While there he performed medical physics services for Shands Hospital at the University of Florida and obtained his board certification in Diagnostic Radiological Physics in May 2000. He moved to Texas to work at the University of Texas MD Anderson Cancer Center in December of 2001 where he currently practices as a Senior Medical Physicist in the Department of Imaging Physics.
Mr. Geiser area of expertise is in imaging physics as it relates to breast imaging. He is particularly interested in full field digital mammographic imaging and digital breast tomosynthesis. Another passion of his is image informatics and image display.
Mr. Geiser has authored several articles in peer reviewed journals, lectured at international conferences and participated as an instructor in hands on courses. He has authored a book chapter on artifacts in digital mammography.
Present Title & Affiliation
Primary Appointment
Associate Faculty, Graduate School of Biomedical Sciences, Houston, TX
Senior Medical Physicist, Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
Dual/Joint/Adjunct Appointment
Associate Faculty, Graduate School of Biomedical Sciences, Houston, TX
Senior Medical Physicist, Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
Research Interests
Dosimetry in mammography
Phantoms for FFDM and breast tomosynthesis
Clinical Interests
Informatics
Radiologists reading efficiency in mammography
Breast imaging: Mammography, Ultrasound, Tomosynthesis, Contrast Enhanced Mammography, Molecular Breast Imaging
Education & Training
Degree-Granting Education
| 1996 | University of Florida, Gainesville, Florida, US, Medical Physics, M.S |
| 1992 | Southern Oregon State College, Ashland, Oregon, US, Physics, BS |
Licenses & Certifications
| 2001 | Texas Medical Board - Diagnostic Medical Physicist |
| 2000 | American Board of Radiology |
Experience & Service
Administrative Appointments/Responsibilities
Lead Faculty, Imaging Physics, The Unitversity of Texas MD Anderson Cancer Center, 2025 - Present
Lead Faculty, Imaging Physics, The University of Texas MD Anderson Cancer Center Cancer Center, Houston, Texas, 2014 - Present
Other Professional Positions
Diagnostic Radiological Physicist, Environmental Health & Safety, University of Florida, Gainesville, FL, 1996 - 2001
Diagnostic Radiological Physicist Graduate Assistant, Shands Hospital at the University of Florida, Gainesville, FL, 1993 - 1996
Electrician's Mate First Class, Navy Nuclear Power Program, 1981 - 1987
Honors & Awards
| 2022 - 2024 | Fellow American College of Radiology, American College of Radiology |
| 2019 - 2024 | Fellow AAPM, American Association of Physicists in Medicine |
Professional Memberships
Selected Presentations & Talks
Local Presentations
- 2024. The Art of Mammography. Invited. 7th Annual Breast Imaging Seminar. Houston, Texas, US.
- 2023. 6th Annual Breast Imaging Seminar. Invited. MDACC. Houston, TX, US.
Regional Presentations
- 2015. Breast Tomosynthesis Update. Conference. Florida Chapter AAPM. Orlando, FL, US.
- 2009. Artifacts in Digital Mammography. Conference. Southwest Chapter of the AAPM. San Antonio, TX, US.
- 2006. ACR Accreditation of Stereotactic Breast Biopsy Units. Conference. FastCE State Mammography Seminar. Humble, TX, US.
- 2005. Everything you wanted to know about digital mammography but were afraid to ask. Conference. FastCE State Mammography. Humble, TX, US.
National Presentations
- 2026. The Role of the Medical Physicist in Mammography Equipment Procurement. Invited. AAPM SCM. Orlando, Florida, US.
- 2025. A Proposed Quality Control Program for Contrast Enhanced Mammography. Invited. AAPM. Washington DC, US.
- 2024. Establishing a Quality Control Program for Mammographers Performance. Conference. IAEA TC Regional Caribbean Training Course on Breast Imaging. Woodlands, TX, US.
- 2024. Image Quality a Physicists Perspective. Conference. IAEA TC Regional Caribbean Training Course on Breast Imaging. Woodlands, TX, US.
- 2024. The Roll of MQSA in Ensuring Quality of Mammography: Update on the New Final Rule. Conference. AAPM. Los Angeles, US.
- 2023. Breast Cancer Diagnosis from Screening to Pathology: Equipment. Invited. AAPM. Houston, TX, US.
- 2023. Quality Control and Quality Assurance in Mammography QUAADRIL. Conference. IAEA/ANL. Houston, TX, US.
- 2022. Transition to Digital Mammography. Invited. PAHO. Miami, FL, US.
- 2022. Artifacts in Digital Mammography and DBT. Invited. PAHO. Miami, FL, US.
- 2022. ACR Update. Invited. AAPM. Washington DC, US.
- 2021. ACR Update SBB QC Manual. Invited. AAPM. Virtual, US.
- 2020. QA/QC in Mammography. Invited. IAEA/ANL, US.
- 2020. Mammography Dosimetry/DRL's/MQSA. Conference. IAEA/ANL, US.
- 2020. Mammography Principles/Physics. Invited. IAEA/ANL, TX, US.
- 2019. Mammography Practicums/Demonstrations. Conference. IAEA/ANL. Houston, TX, US.
- 2019. Mammography Physics Quality Assurance and Quality Control. Conference. IAEA/ANL. Houston, TX, US.
- 2018. Artifacts in Digital Breast Tomosynthesis and Synthesized 2D Imaging. Invited. AAPM. Nashville, TN, US.
- 2018. Multi Modality Stereotactic Breast Imaging Systems. Conference. AAPM. Las Vegas, NV, US.
- 2017. Acceptance Testing and ACR Accreditation of Stereotactic Breast Biopsy Systems. Invited. 2017 AAPM Annual Meeting. Denver, CO, US.
- 2017. Mammography Practicums/Demonstrations. Conference. IAEA/ANL. Houston, TX, US.
- 2017. Mammography Principles and Physics. Invited. IAEA/ANL. Houston, TX, US.
- 2015. Stereotactic Breast Biopsy and Breast Ultrasound Accreditation. Invited. AAPM 2015 Spring Clinical. St. Louis, MO, US.
- 2014. BICOE – Stereotactic Breast Biopsy and Breast Ultrasound Accreditation. Invited. AAPM 2014 Spring Clinical. Denver, CO, US.
- 2013. Breast Imaging QA: Implementation of a New Breast Tomosynthesis Program: A Clinical Medical Physicists Perspective. Conference. AAPM 2013 Annual Meeting. Indianapolis, IN, US.
- 2013. The Art of the Image. The Identification and Remediation of Image Artifacts in Projection Radiography. Conference. AAPM 2013 Annual Meeting. Indianapolis, IN, US.
- 2013. The ACR Random On Site Survey Program. Invited. AAPM. Phoenix, AZ, US.
- 2013. Breast Tomosynthesis from the Ground Up. Invited. AAPM. Phoenix, AZ, US.
- 2012. The Breast Imaging Center of Excellence. Invited. AAPM. Dallas, TX, US.
- 2011. Breast Specimen Radiography. Invited. ACMP. Chattanooga, TN, US.
- 2010. Conversion from Film Screen Mammography to Digital Mammography. Invited. ACMP. San Antonio, TX, US.
- 2009. Artifacts in Digital Mammography. Invited. ACMP. Virginia Beach, VA, US.
- 2008. Digital Mammography: The Impact on PACS, Workflow, and Equipment Purchase Considerations. Invited. SIIM 2008. Seattle, WA, US.
- 2008. Annual and Acceptance Testing of Digital Mammography Equipment. Invited. ACMP 2008. Seattle, WA, US.
- 2006. Annual QC Testing of the Hologic/LORAD Full Field Digital Mammography System (TH-D-230C-01, TH-D-230C-02). Invited. 48th Annual AAPM Meeting. Orlando, FL, US.
- 1995. Image Quality and Patient Doses in Pediatric Fluoroscopy (WE-D1-08-D). Conference. Annual AAPM Meeting. Boston, MA, US.
International Presentations
- 2010. Digital Detectors in Digital Mammography. Invited. Health Promotion Board, Singapore. Singapore, SG.
- 2010. Quality Control for the Technologist in Digital Mammography. Invited. Health Promotion Board, Singapore. Singapore, SG.
- 2010. Artifacts in Digital Mammography. Conference. Health Promotion Board, Singapore. Singapore, SG.
Grant & Contract Support
| Date: | 2023 - 2025 |
| Title: | Siemens Strategic Collaboration Alliance: Comparison of conspicuity of masses and architectural distortions between wide-and narrow-angle DBT (digital breast tomosynthesis) systems |
| Funding Source: | Siemens |
| Role: | Collaborator |
| ID: | RCTS 62640 |
Selected Publications
Peer-Reviewed Articles
- Huang ML, Hess K, Ma J, Santiago L, Scoggins ME, Arribas E, Adrada BE, Le-Petross HT, Leung JWT, Yang W, Geiser W, Candelaria RP. Prospective Comparison of Synthesized Mammography with DBT and Full Field Digital Mammography with DBT Uncovers Recall Disagreements That may Impact Cancer Detection. Acad Radiol 29(7):1039-1045, 2022. e-Pub 2022. PMID: 34538550.
- Schwartz TM, Hillis SL, Sridharan R, Lukyanchenko O, Geiser W, Whitman GJ, Wei W, Haygood TM. Interpretation time for screening mammography as a function of the number of computer-aided detection marks. J Med Imaging (Bellingham) 7(2):022408, 2020. e-Pub 2020. PMID: 32042859.
- MacLellan CJ, Layman RR, Geiser W, Gress DA, Jones AK. Evaluation of an Automated Grid Artifact Detection System for Quality Control in Digital Mammography. Med Phys 46(8):3442-3450, 2019. e-Pub 2019. PMID: 31116445.
- Geiser WR, Einstein SA, Yang WT. Artifacts in Digital Breast Tomosynthesis. AJR Am J Roentgenol 211(4):926-932, 2018. e-Pub 2018. PMID: 30063382.
- Le-Petross HT, Hess KR, Knudtson JD, Lane DL, Moseley TW, Geiser WR, Whitman GJ. Effect of Mammography on Marker Clip Migration After Stereotactic-Guided Core Needle Breast Biopsy. Curr Probl Diagn Radiol. e-Pub 2017. PMID: 28390794.
- Jones AK, Heintz P, Geiser W, Goldman L, Jerjian K, Martin M, Peck D, Pfeiffer D, Ranger N, Yorkston J. Ongoing quality control in digital radiography: Report of AAPM Imaging Physics Committee Task Group 151. Med Phys 42(11):6658-70, 2015. e-Pub 2015. PMID: 26520756.
- Leong DL, Rainford L, Haygood TM, Whitman GJ, Geiser WR, Stephens TW, Davis PL, Brennan, PC. Radiologist experience effects on contrast detection. J. Opt. Soc. Am. A 31(11):2328-2333, 2014. e-Pub 2014.
- Sechopoulos I, Sabol JM, Berglund J, Bolch WE, Brateman L, Christodoulou E, Flynn M, Geiser W, Goodsitt M, Kyle Jones A, Lo JY, Maidment AD, Nishino K, Nosratieh A, Ren B, Paul Segars W, Von Tiedemann M. Radiation dosimetry in digital breast tomosynthesis: Report of AAPM Tomosynthesis Subcommittee Task Group 223. Med Phys 41(9):091501, 2014. e-Pub 2014. PMID: 25186375.
- Muralidhar GS, Markey MK, Bovik AC, Haygood TM, Stephens TW, Geiser WR, Garg N, Adrada BE, Dogan BE, Carkaci S, Khisty R, Whitman GJ. Stereoscopic interpretation of low-dose breast tomosynthesis projection images. J Digit Imaging 27(2):248-54, 2014. e-Pub 2014. PMID: 24190140.
- Leong DL, Rainford L, Haygood TM, Whitman GJ, Geiser WR, Adrada BE, Santiago L, Brennan PC. Trend of Contrast Detection Threshold with and without Localization. J Digit Imaging 26(6):1099-106, 2013. e-Pub 2013. PMID: 23503988.
- Carkaci S, Geiser WR, Adrada BE, Marquez C, Whitman GJ. How to establish a cost-effective mobile mammography program. AJR Am J Roentgenol 201(5):W691-7, 2013. e-Pub 2013. PMID: 24147498.
- Kanal KM, Krupinski E, Berns EA, Geiser WR, Karellas A, Mainiero MB, Martin MC, Patel SB, Rubin DL, Shepard JD, Siegel EL, Wolfman JA, Mian TA, Mahoney MC. ACR-AAPM-SIIM Practice Guideline for Determinants of Image Quality in Digital Mammography. J Digit Imaging 26(1):10-25, 2013. e-Pub 2013. PMID: 22992865.
- Leong DL, Rainford L, Haygood TM, Whitman GJ, Tchou PM, Geiser WR, Carkaci S, Brennan PC. Verification of DICOM GSDF in Complex Backgrounds. J Digit Imaging 25(5):662-9, 2012. e-Pub 2012. PMID: 22535193.
- Liu X, Lai CJ, Whitman GJ, Geiser WR, Shen Y, Yi Y, Shaw CC. Effects of exposure equalization on image signal-to-noise ratios in digital mammography: A simulation study with an anthropomorphic breast phantom. Med Phys 38(12):6489, 2011. e-Pub 2011. PMID: 22149832.
- Tchou PM, Haygood TM, Atkinson EN, Stephens TW, Davis PL, Arribas EM, Geiser WR, Whitman GJ. Interpretation time of computer-aided detection at screening mammography. Radiology 257(1):40-6, 2010. e-Pub 2010. PMID: 20679448.
- Haygood TM, Arribas E, Brennan PC, Atkinson EN, Herndon M, Dieber J, Geiser W, Santiago L, Mills CM, Davis P, Adrada B, Carkaci S, Stephens TW, Whitman GJ. Conspicuity of Microcalcifications on Digital Screening Mammograms Using Varying Degrees of Monitor Zooming. Acad Radiol 16(12):1509-1517, 2009. e-Pub 2009. PMID: 19896068.
- Lai CJ, Shaw CC, Geiser W, Chen L, Arribas E, Stephens T, Davis PL, Ayyar GP, Dogan BE, Nguyen VA, Whitman GJ, Yang WT. Comparison of Slot Scanning Digital Mammography System with Full Field Digital Mammography System. Med Phys 35(6):2339 - 2346, 2008. e-Pub 2008. PMID: 18649467.
- Lai, CJ, Shaw, C, Geiser, W, Kappadath, SC, Liu, X, Wang, T, Tu, S, Altunbas, M. Slot Scanning Versus Ani-Scatter Grid on Digital Mammography-Comparison of Low Contrast Performance Using Contrast-Detail Measurement. SPIE Physics of Medical Imaging 5368:734-742, 2004. e-Pub 2004.
- Rong XJ, Krugh KT, Shepard SJ, Geiser WR. Measurement of focal spot size with slit camera using computed radiography and flat-panel based digital detectors. Med Phys 30(7)(7):1768-75, 2003. e-Pub 2003. PMID: 12906194.
- Huda W, Steinbach BG, Geiser WR, Belden CJ. Optimal technique factors for magnification mammography. Invest Radiol 32(7):378-81, 1997. e-Pub 1997. PMID: 9228602.
- Geiser WR, Huda W, Gkanatsios NA. Effect of patient support pads on image quality and dose in fluoroscopy. Med Phys 24(3)(3):377-82, 1997. e-Pub 1997. PMID: 9089590.
- Rill LN, Huda W, Geiser WR, Gkanatsios NA. Viewbox luminance measurements and their effect on reader performance. Radiology 201:820-820, 1996. e-Pub 1996.
Review Articles
- Geiser WR, Haygood TM, Santiago L, Stephens T, Thames D, Whitman GJ. Challenges in Mammography: Part 1Artifacts in Digital Mammography. AJR Am J Roentgenol 197(12):W1023 - W1030, 2011. e-Pub 2011. PMID: 22109316.
Editorials
- Plaxco JS, DO, Geiser W, MS, Yang W, MBBS, MD, FRCR. Effect of integrating 3D-mammography (digital breast tomosynthesis) with 2D-mammography on radiologists' true-positive and false-positive detection in a population breast screening trial. Breast Diseases: A Year Book Quarterly 26(1):45-47, 2015.
Abstracts
- Geiser W, Reeve D. Breast Imaging QA. Medical Physics 40(6):528, 2013. e-Pub 2013.
- Lai C, You Z, Zhong Y, Shen Y, Chen L, Liu X, Han T, Ge S, Yi Y, Geiser W, Whitman G, Yang W, Shaw C. Effects of Exposure Level and Anatomical Background On Detection of Simulated Microcalcifications in Digital Mammography. 51st Annual AAPM Meeting, 2009. e-Pub 2009.
- Santiago L, Haygood TM, Whitman GJ, Atkinson EN, Geiser WR. Technical Recall in Film Screen and Digital Screening Mammography. RSNA, 2007. e-Pub 2007.
- Shaw C, Geiser W. Mammography QA Workshop I & II. 48th Annual AAPM Meeting, 2006. e-Pub 2006.
- Ayyer GP, Whitman G, Geiser WR, Sprinkle-Vincent S, Sullivan C, Stephens TW. Film-Screen and Digital Mammography Artifacts. American Roentgen Ray Society Annual Meeting, 2005. e-Pub 2005.
- Liu H, Geiser WR, Willis C. Effects of Prepatient Filtration on Contrast, Scatter and Dose in CR Chest Exams: A Phantom Study. 47th Annual AAPM Meeting, 2005. e-Pub 2005.
- Lai C, Shaw C, Geiser WR, Liu X, Kappadath S, Altunbas M, Tu S, Wang T, Whitman G, Dempsey P. A Contrast-Detail Phantom Study to Compare a Slot Scanning Digital System with An Asi/CsI Flat Panel Based System. 46th Annual AAPM Meeting, 2004. e-Pub 2004.
- Lai C, Shaw C, Whitman G, Arribas E, Nguyen V, Stephens T, Geiser WR, Dempsey P. Comparison of AsI/CsI Flat Panel and Slot Scanning Digital Mammography Systems for Detection of Simulated Microcalcifications: An ROC Study. 46th Annual AAPM Meeting, 2004. e-Pub 2004.
- Rong J, Krugh K, Shepard S, Geiser WR. Measurement of Focal Spot Size with Slit Camera Using Computed Radiography and Flat Panel Based Digital Detectors. 44th Annual AAPM Meeting, 2002. e-Pub 2002.
Patient Reviews
CV information above last modified July 22, 2026