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Peter Ferjancic, PhD

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Peter Ferjancic, PhD

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Assistant Professor, Department of Radiation Oncology

Rush Medical College

Assistant Professor, Department of Radiation Oncology

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Address: 500 South Paulina St., Atrium 013
Chicago, IL 60612
Phone:
(312) 942 -5751

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PhD, University of Wisconsin School of Medicine and Public Health
Medical Physics Residency, University of Chicago
- Probabilistic treatment planning and robust optimization in radiation therapy
- Quantitative PET/CT imaging and intra-lesional heterogeneity analysis
- Dose painting strategies and adaptive radiotherapy
- Evaluation of imaging biomarkers for disease response and treatment adaptation
- 18F-FET PET imaging and test-retest reproducibility in glioblastoma
- Development of novel techniques for total marrow irradiation (TMI)
- Use of textural radiomics in disease characterization and treatment prediction
- Image-guided therapy and robotic motion-compensated stereotactic radiosurgery (SRS)
Peter Ferjancic, PhD is a medical physicist at Rush University Medical Center with a strong background in radiation therapy physics and quantitative imaging research. He earned his PhD and MS in Medical Physics from the University of Wisconsin School of Medicine and Public Health, where he trained in the renowned Jeraj Lab. His doctoral work focused on probabilistic treatment planning and robust optimization, with particular emphasis on improving radiation therapy through better integration of uncertainty modeling and imaging biomarkers.
Ferjancic completed his residency in radiation therapy physics at the University of Chicago, gaining hands-on experience in clinical operations, equipment calibration, and advanced treatment planning across a broad range of modalities. His work integrates advanced PET/CT imaging, intra-lesional heterogeneity quantification, and adaptive therapy techniques. He has also contributed to the development of a novel total marrow irradiation (TMI) technique and helped pioneer imaging-guided treatment personalization strategies.
His research has been published in journals such as Physics in Medicine & Biology and Biomedical Physics & Engineering Express, and he has presented at numerous national and international conferences, including AAPM, ESTRO, and APS. Ferjancic is particularly interested in the intersection of image-guided therapy, radiomics, and machine learning applications in oncology.
A dedicated mentor and global collaborator, Ferjancic also maintains active memberships in the American Association of Physicists in Medicine, the American Physical Society, and Medical Physics for World Benefit.
Ryan J, Hardcastle N, Francis R, Ferjančič P, Ng SP, Koh ES, Geso M, Kelly J, Ebert MA. The impact of fluorine-18-fluoroethyltyrosine positron emission tomography scan timing on radiotherapy planning in newly diagnosed patients with glioblastoma. Phys Imaging Radiat Oncol. 2024 Jan 17;29:100536. doi: 10.1016/j.phro.2024.100536. PMID: 38303922; PMCID: PMC10831153.
Ferjančič P, van der Heide UA, Ménard C, Jeraj R. Probabilistic target definition and planning in patients with prostate cancer. Phys Med Biol. 2021 Oct 28;66(21). doi: 10.1088/1361-6560/ac2f8a. PMID: 34644696.
Huff DT, Ferjancic P, Namías M, Emamekhoo H, Perlman SB, Jeraj R. Image intensity histograms as imaging biomarkers: application to immune-related colitis. Biomed Phys Eng Express. 2021 Sep 30;7(6):10.1088/2057-1976/ac27c3. doi: 10.1088/2057-1976/ac27c3. PMID: 34534974; PMCID: PMC8867997.
Ferjančič P, Ebert MA, Francis R, Nowak AK, Jeraj R. Repeatability of Quantitative 18F-FET PET in Glioblastoma. Biomed Phys Eng Express. 2021 Apr 30;7(3). doi: 10.1088/2057-1976/abfae9. PMID: 33887712.

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