Meet the members of the LaViolette Lab
Peter LaViolette, PhD
Dr. LaViolette is an alum of the Medical College of Wisconsin (MCW) Biophysics Department, where he completed his PhD in 2011. He is now an Endowed Professor of Radiology, Biophysics, and Biomedical Engineering at MCW. His research focuses on developing radio-pathomic machine learning models using MRI and histology to characterize brain and prostate cancer. He directs the Quantitative Imaging Lab (QIL), supporting cancer clinical trials. If that wasn’t enough, he is also the Vice Chair of Research in the Department of Radiology! Dr. LaViolette has published over 70 papers and been awarded multiple grants from the NIH, industry, and foundations. He received the MCW Robert C. Olson Professorship in Radiology in 2021.
Outside of lab, he likes spending time with his two crazy kids and lots of hobbies including home renovations, wood working, collecting orchids, and traveling.
Students
&
Staff
Students & Staff
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Allison Lowman
Program Manager I
Allie has been with us since 2018 where she started as a Research Technologist. She has climbed the ranks since then as a Research Associate and now a Program Manager for the QIL. Around the lab she is known for knowing where all data exists, solving most problems, and doing independent projects in the brain.Outside of the lab she can be found exploring State and National Parks, coaching the WWHS Cheer Team, or cheering on all things Wisconsin Badgers.
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Fitzgerald Kyereme
Research Technologist I
Fitz joined us in 2020 after completing his bachelor’s degree in Biochemistry from UW-Milwaukee. Fitz is primarily responsible for digitizing stained histology for the lab, as well as creating 3D printed slicing jigs for our prostate cancer patients. -

Michael Barrett
Programmer Analyst II
Michael completed MCW’s software engineering apprenticeship in 2022 and has been with us since. He is responsible for the research infrastructure in the lab, and deploying and managing the local Kubernetes cluster and the services deployed on it, specifically OMERO and XNAT, digital pathology and radiology services, respectively. Michael loves trying to figure out how new things work and their applications. -

Samuel Bobholz, PhD
Assistant Professor
Sam is the newest Assistant Professor in MCW’s Department of Radiology! He is a former LaViolette Lab graduate student and post-doctoral fellow. His research focuses on training machine learning models to non-invasively measure autopsy tissue characteristics using MRI to improve disease tracking in brain cancer.In his free time he enjoys making pasta, playing with synthesizers, and watching old movies.
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Savannah Duenweg, PhD
Research Scientist I
Savannah is a Research Scientist in the lab, staying on after completing her PhD with the LaViolette Lab. Her primary work focuses developing radio-pathomic
machine learning models using MRI and whole mount prostate tissue to assess cancer risk.If she’s not in lab or traveling for a conference, you can find her serving brunch at Café Benelux, playing with her dog, or reading a good book.
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Rachel Beers
Clinical Research Coordinator III
Rachel joined MCW in 2021 as a Clinical Coordinator in Radiology after completing her Masters at UW-Madison. She manages multiple studies within the MRI research realm which are led by various departments. Her main focus is prostate and brain cancer, as well as regulatory efforts within the department.
Outside of work, Rachel has an appointment as an Adjunct Professor at Bryant & Stratton College and can be found at local eats as a Milwaukee foodie.
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Hope Reecher, MD
Post-Doctoral Fellow
Hope worked extensively with the lab during medical school and now is joining us for a postdoctoral fellowship. Since receiving her BS from the University of Pittsburgh, her research passions have been in epilepsy and neurosurgery. Her role in the lab is to establish RPMs in epilepsy, and to validate them inside the OR.
When not in lab at 3am, she is likely off solo-camping, rock climbing, teaching Sunday school, or tending to her 41 plants.
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Aleksandra Winiarz
Graduate Student | Biophysics
Aleks is a fifth-year graduate student in the lab from the Neuroscience Doctoral Program (NDP). Her research focuses on clinical applications of radio-pathomic mapping in GBM patients. Aleks is the Biophysics representative for the Graduate Student Association for the second year in a row!
Aleks is an avid runner and yogi. She also enjoys dancing, traveling, and her queen Taylor Swift!
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Biprojit Nath
Graduate Student | Biophysics
Bipro is a third-year graduate student, joining us after receiving his MSc in Nuclear Medicine from Indian Institute of Technology Kharagpur. He is passionate about applying his background in medical physics and nuclear medicine to our brain datasets.
The Huberman Lab podcast fuels his brain, and he loves to travel and whip up delicious meals in the kitchen.
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Benjamin Chao
MSTP | Graduate Student | Biophysics
Ben is a second year of graduate student from the Medical Scientist Training Program (MSTP). He is currently experimenting with new ideas of tumor probability maps in GBM patients and plans to predict longitudinal tumor growth patterns.
Outside of work, Ben is a huge gym rat, loves video games, his cat Corn, and mentoring at Badger Boy State.
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Daniel Kim
Medical Student | MD/MS
Daniel is a second-year student in the MD/MS program. He is currently exploring the use of radio-pathomic maps as a non-invasive biomarker of tumor biology and exploring clinical application of tumor probability maps.
Outside of work and school, Daniel enjoys playing golf and traveling.
Collaborators
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Jennifer Connelly, MD
Max Krucoff, MD
Wade M. Mueller, MD
Rupen Desai, MD
Kenneth Jacobsohn, MD
Scott Johnson, MD
Michael Straza, MD, PhD
William A. Hall, MD
Christopher Kleefisch, MD
Daniel Destiche
Parag Tolat, MD
Stephanie Vincent-Sheldon, MD
Kathleen Bhatt, MD
Katherine Troy, MD
Eric Fair, MD
Michael Kim, MD
Elizabeth Cochran, MD
Jamie Jacobsohn, MD
Neurology
Neurosurgery
Neurosurgery
Neurosurgery
Urologic Surgery
Urologic Surgery
Radiation Oncology
Radiation Oncology
Radiology
Radiology
Radiology
Radiology
Radiology
Radiology
Radiology
Radiology
Pathology
Pathology
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Kenneth A. Iczkowski, MD
Janine Lupo, PhD
Joanna Phillips, MD, PhD
Mitch Berger, MD
Benjamin Ellington, PhD
Sonoko Oshima, MD, PhD
Corey Arnold, PhD
Josh Neman-Ebrahim, PhD
Frederick Varn, PhD
John Bukowy, PhD
Pallavi Tiwari, PhD
Philipp Lohmann, PhD
Spyros Bakas, PhD
Jason Parker, PhD
University of California - Davis
University of California - San Francisco
University of California - San Francisco
University of California - San Francisco
University of California - Los Angeles
University of California - Los Angeles
University of California - Los Angeles
University of Southern California
The Jackson Laboratory
Milwaukee School of Engineering
University of Wisconsin - Madison
Jülich Research Center
Indiana University
Indiana University
Previous Trainees
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Alexander Barrington, MS
Sean McGarry, PhD
Samuel Bobholz, PhD
Savannah Duenweg, PhD
Pouya Mirzaei, MS
2019
2020
2022
2024
2025
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John Bukowy, PhD
Michael Brehler, PhD
Samuel Bobholz, PhD
Hope Reecher, MD
2018-19
2019-22
2022-24
2025-26
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Alex Carle
Nelson Milbach
Satvir Kali
Riya Chaudhari
Morgan Ford
James Davis
Cassandra Gliszinski
Anna Wilzinski
Jeff Rodriguez
Cassandra Naze
Jordyn Hamburger
Alisha Hoefs
Sarah Rubenstein
Donovan Murphy
Thomas Bergin
Jillian Kellum
2013
2015
2016
2017
2018
2018
2019
2019
2021
2021
2022
2022
2023/24
2024
2025
2026
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Sofia Rivera
2026
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Han Nguyen
Mrina Mtenga
Adam Lahrache
2023
2025
2025
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Seble Yigletu
Megan Gates
Maurice Carroll
Lily Kriegel
Anika Tanija
Simrin Patel
2015
2016
2017
2023
2024
2025/26
Collaborators
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Jennifer Connelly, MD Neurology
Max Krucoff, MD Neurosurgery
Wade M. Mueller, MD Neurosurgery
Kenneth Jacobsohn, MD Urol. Surgery
Scott Johnson, MD Urol. Surgery
Michael Straza, MD, PhD Rad. Onc.
William A. Hall, MD Rad. Onc.
Christopher Kleefisch, MD Radiology
Parag Tolat, MD Radiology
Stephanie Vincent-Sheldon, MD Rad.
Kathleen Bhatt, MD Radiology
Katherine Troy, MD Radiology
Eric Fair, MD Radiology
Michael Kim, MD Radiology
Kelly Mrachek, MD Pathology
Jamie Jacobsohn, MD Pathology
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Kenneth A. Iczkowski, MD UCD
Janine Lupo, PhD UCSF
Joanna Phillips, MD, PhD UCSF
Mitch Berger, MD UCSF
Benjamin Ellington, PhD UCLA
Sonoko Oshima, MD, PhD UCLA
Corey Arnold, PhD UCLA
Josh Neman-Ebrahim, PhD USC
Frederick Varn, PhD The Jackson Lab
John Bukowy, PhD MSOE
Pallavi Tiwari, PhD UW-Madison
Philipp Lohmann, PhD FZJ
Previous Trainees
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Alexander Barrington, MS 2019
Sean McGarry, PhD 2020
Samuel Bobholz, PhD 2022
Savannah Duenweg, PhD 2024
Pouya Mirzaei, MS 2025
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John Bukowy, PhD 2018-19
Michael Brehler, PhD 2019-22
Samuel Bobholz, PhD 2022-24
Hope Reecher, MD 2026-27
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Alex Carle 2013
Nelson Milbach 2015
Satvir Kali 2016
Riya Chaudhari 2017
Morgan Ford 2018
James Davis 2018
Cassandra Gliszinski 2019
Anna Wilzinski 2019
Jeff Rodriguez 2021
Cassandra Naze 2021
Jordyn Hamburger 2022
Alisha Hoefs 2022
Sarah Rubenstein 2023/24
Donovan Murphy 2024
Thomas Bergin 2025
Jillian Kellum 2026
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Sofia Rivera 2026
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Han Nguyen 2023
Mrina Mtenga 2025
Adam Lahrache 2025
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Seble Yigletu 2015
Megan Gates 2016
Maurice Carroll 2017
Lily Kriegel 2023
Anika Tanija 2024
Simrin Patel 2025/26