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James Balter, PhD, FAAPM
Professor & Co-Director,
Physics Division, Department of Radiation Oncology
University of Michigan
Michigan, USA

I am a Medical Physicist in the Radiation Oncology Department at the University of Michigan.  My research focuses on the interface of imaging sciences and advanced therapeutics.  My primary interests are:
- Advancing precise Image-Guided Radiotherapy (IGRT)
- Developing and improving dynamic human models
- Studying the complexity of therapeutic decisions and the sparsity of information sufficient to justify decisions throughout the radiotherapy process
- Projection-to-volume modeling of pose, configuration, and movement
- MRI-guided radiotherapy
Recent Publications:

Litzenberg DW, Hadley SW, Tyagi N, Balter JM, Ten Haken RK, Chetty IJ.  Synchronized Dynamic Dose Reconstruction.  Med Phys 34(1):91-102, 2007.

Kashani R, Lam KL, Litzenberg DW, Balter J.  Technical note: A deformable phantom for dynamic modeling in radiation therapy.  Med Phys 34(1):199-201, 2007.

Rosu M, Balter JM, Chetty IJ, Kessler ML, McShan DL, Balter P, Ten Haken RK.  How extensive of a 4D dataset is needed to estimate cumulative dose distribution plan evaluation metrics in conformal lung therapy?  Med Phys 34(1):233-245, 2007.

Cao Y, Platt JF, Francis IR, Balter JM, Pan C, Normolle D, Ben-Josef E, Ten Haken RK, Lawrence TS.  The prediction of radiation-induced liver dysfunction using a local dose and regional venous perfusion model.  Med Phys 34(2):604-612, 2007

Zeng R, Fessler JA, Balter JM.  Estimating 3D respiratory motion from orbiting views by tomographic image registration.  IEEE Trans Med Imag, 26(2):153-63, 2007.

Balter JM, Kessler ML.  Imaging and alignment for image guided radiation therapy.  Journal of Clinical Oncology, 25(8):931-7, 2007.

Jagsi, R, Moran, JM, Kessler, ML, Marsh, RB, Balter, JM, Pierce, LJ. Respiratory Motion of the Heart and Positional Reproducibility Under Active Breathing Control.  International Journal of Radiation Oncology Biology Physics, 68(1):253-8, 2007.

Moran JM, Balter JM, Ben-David MA, Marsh RB, Van Herk M, Pierce LJ.  Short-term displacement and reproducibility of the breast and nodal targets under Active Breathing Control.  Int J Radiat Oncol Biol Phys, 68(2):541-6, 2007.

Kashani R, Hub M, Kessler M, Balter JM.  Technical note: A physical phantom for assessment of accuracy of deformable alignment algorithms.  Med Phys 34(7): 2785-2788, 2007.

Litzenberg DW, Willoughby TR, Balter JM, Sandler HM, Wei J, Kupelian PA, Cunningham AA, Bock A, Aubin M, Roach M 3rd, Shinohara K, Pouliot J.  Positional Stability of Electromagnetic Transponders Used for Prostate Localization and Continuous, Real-Time Tracking.  Int J Radiat Oncol Biol Phys 68(4):1199-206, 2007.

Ad Hoc Committee on Teaching Physics to residents: Klein EE, Gerbi BJ, Price RA Jr, Balter JM, Paliwal B, Highes L, Huang E.  ASTRO’s 2007 Core Physics Curriculum for Radiation Oncology Residents.  Int J Radiat Oncol Biol Phys 68(5):1276-88, 2007.

Litzenberg DW, Hadley SW, Lam KL, Balter JM, “A precision translation stage for reproducing measured target volume motions,” J Appl Clin Med Phys, 8(3):2221, 2007.

Murphy M, Balter J, Balter S, BenComo J, Das I, Jiang S, Ma C, Olivera G, Rodenaugh, Ruchala K, Shirato H, Yin FF.  The Management of imaging dose during image-guided radiotherapy.  Report of the AAPM task group 75.  Med Phys 34(10):4041-63, 2007.

Balter JM, Cao Y.  Advanced technologies in Image Guided Radiation Therapy.  Sem Radiat Oncol 17(4):293-7, 2007.

Lam KL, Balter JM, Ten Haken RK.  Effect of daily localization and correction on the setup uncertainty: dependences on the measurement uncertainty, re-positioning uncertainty and action level.  Phys Med Biol. 52(22):6575-87, 2007.

Ruan D, Fessler JA, Balter JM.  Real-time prediction of respiratory motion based on local regression methods.  Phys Med Biol. 52(23):7137-52, 2007.

Cao Y, Pan C, Balter JM, Platt JF, Francis IR, Knol JA, Normolle D, Ben-Josef E, Ten Haken RK, Lawrence TS.Liver function after irradiation based on computed tomographic portal vein perfusion imaging.  Int J Radiat Oncol Biol Phys. 70(1):154-60, 2008.

Ruan D, Fessler JA, Balter JM.  Mean Position Tracking of Respiratory Motion.  Med Phys 35(2):782-92 2008.

Zeng R, Fessler JA, Balter JM, Balter PA.  Iterative sorting for four-dimensional CT images based on internal anatomy motion.  Med Phys 35(3):917-26, 2008.

Balter JM, Antonuk LE.  QA for kV and MV In-room Imaging and Localization for Off- and On-line Setup Error Correction.  Int J Radiat Oncol Biol Phys 71(1):S48-52, 2008.

Ruan D, Fessler JA, Balter JM, Berbeco RI, Nishioka S, Shirato H.  Inference of hysteretic respiratory tumor motion from external surrogates: a state augmentation approach.  Phys Med Biol 53(11):2923-2936, 2008.

Lin A, Moran JM, Marsh RB, Balter JM, Fraass BA, McShan DL, Kessler ML, Pierce LJ.  Evaluation of multiple breathing states using a multiple instance geometry approximation (MIGA) in inverse-planned optimization for locoregional breast treatment.  Int J Radiat Oncol Biol Phys 72(2):610-6, 2008.

Popovtzer R, Agrawal A, Kotov NA, Popovtzer A, Balter J, Carey TE, Kopelman R.  Targeted Gold nanoparticles Enable Molecular CT Imaging of Cancer.  Nano Lett 8(12):4593-6, 2008.

Balter S, Balter JM.  Anniversary paper: A sampling of novel technologies and the role of medical physicists in radiation oncology.  Med Phys 35(12):5641-52, 2008.

Kashani R, Hub M, Balter JM, Kessler ML, Dong L, Zhang L, Xing L, Xie Y, Hawkes D, Schnabel JA, McClelland J, Joshi S, Chen Q, Lu W.  Objective assessment of deformable image registration in radiotherapy: a multi-institution study.  Med Phys 35(12):5944-53, 2008.

Gutfeld O, Kretzler AE, Kashani R, Tatro D, Balter JM.  Influence of rotations on dose distributions in spinal stereotactic radiotherapy (SBRT).  Int J Radiat Oncol Biol Phys 73(5):1596-1601, 2009.

Feng M, Balter JM, Normolle D, Adusumilli S, Cao Y, Chenevert TL, Ben-Josef E. Characterization of pancreatic tumor motion using Cine-MRI: surrogates for tumor position should be used with caution. Int J Radiat Oncol Biol Phys 74(3):884-891, 2009.

Thomas JG, Kashani R, Balter JM, Tatro D, Kong FM, Pan CC.  Intra and interfraction mediastinal nodal region motion: implications for internal target volume expansions.  Med Dosim, 34(2): 133-139, 2009.

Moran JM, Ben-David MA, Marsh RB, Balter JM, Griffith KA, Hayman, JA, Pierce LJ.  Accelerated Partial Breast Irradiation: What is Dosimetric Effect of Advanced Technology Approaches?  Int J Radiat Oncol Biol Phys 74(5):1311-8, 2009

Holmes, T, Das R, Low D, Yin FF, Balter J, Palta J, Eifel P.  American Society of Radiation Oncology (ASTRO) recommendations for documenting intensity-modulated radiation therapy (IMRT) treatments.  Int J Radiat Oncol Biol Phys, 74(5):1311-8, 2009.

Ruan D, Fessler JA, Balter JM, Keall PJ.  Real-time profiling of respiratory motion: baseline drift, frequency variation and fundamental pattern change.  Phys Med Biol 54(15):4777-92, 2009.

Hadley SW, Lam K, Balter JM.  Analysis of couch position tolerance limits to detect mistakes in patient setup.  J applied clinical medical physics, 10(4):2864, 2009

Long Y, Fessler JA, Balter JM.  Accuracy estimation for projection-to-volume targeting during rotational therapy.  Med Phys 37(6):2480-90, 2010

Y. Long, J. A. Fessler, and J. M. Balter. 3D forward and back-projection for X-ray CT using separable footprints. IEEE Trans. Med. Imag., 2010 Jun 7 (Epub ahead of print)