Andrew S. Lim, MD

Assistant Professor of Clinical Radiation Oncology

Director of Brachytherapy

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Overview

Andrew Lim, MD, is a radiation oncologist at USC Norris Comprehensive Cancer Center, part of Keck Medicine of USC, who specializes in today’s most advanced forms of radiation therapy, including interstitial and surface brachytherapy, volumetric modulated arc therapy and stereotactic body radiation therapy.

At USC Norris, he serves as director of brachytherapy, a form of internal radiation therapy in which the radiation source is placed close to the cancer. Dr. Lim routinely treats prostate cancer, gynecologic cancers, sarcomas, skin cancer and metastatic cancers anywhere in the body.

His research interests focus on the development of artificial intelligence (AI) algorithms capable of integrating clinical, biochemical, genomics and radiologic data, with a goal of making personalized, probabilistic medical predictions. Dr. Lim has received several awards for his outstanding research and cancer care.

Away from work, he enjoys creating software tools that help people save time.

Awards

  • University of Alberta: The RJS and Ada Maude Wright Memorial Prize in Radiation Oncology, 2019
     – 2020
  • St. Francis Xavier University: Yogi Joshi Prize For Excellence in Physics, 2008
     – 2009
  • St. Francis Xavier University: Natural Sciences and Engineering Research Council of Canada Award, 2008
     – 2009

Education and Training

  • Western University, London, Ontario — MD — 06/2013 — Medicine
  • University of Alberta, Edmonton, Alberta — FRCPC — 06/2020 — Radiation Oncology
  • University of California, Los Angeles, Los Angeles — 06/2021 — Brachytherapy

Research Keywords

  • Informatics
  • Prostate Cancer
  • Brachytherapy
  • Artificial Intelligence
  • Cervix Cancer

Publications

  • Stereotactic core ablative radiation therapy for small hypoxic tumors: impact of dosimetric approaches and consequent optimization strategy in the context of spatially fractionated radiation therapy. Front Oncol. 2025; 15:1568959.. View in PubMed
  • Actigraphy-derived sleep fragmentation index: convergent validity and associations with clinical outcomes. J Clin Sleep Med. 2025 09 01; 21(9):1557-1565.. View in PubMed
  • Pilot trials of oral betaine in participants with metabolic dysfunction-associated steatotic liver disease and elevated alanine aminotransferase. Hepatology. 2026 Jun 01; 83(6):1515-1528.. View in PubMed
  • Response letter: Examining the association between sleep apnea and total hippocampal volumes in cognitive impairment. Alzheimers Dement. 2025 Aug; 21(8):e70602.. View in PubMed
  • An international multi-cohort investigation of self-reported sleep and future depressive symptoms in older adults. Sci Rep. 2025 Jul 04; 15(1):23918.. View in PubMed
  • Reduced Complexity of Pulse Rate Is Associated With Faster Cognitive Decline in Older Adults. J Am Heart Assoc. 2025 May 20; 14(10):e041448.. View in PubMed
  • Node-positive carcinoma of the vulva treated with curative-intent radiotherapy. Int J Gynecol Cancer. 2025 07; 35(7):101916.. View in PubMed
  • Sleep trajectories across three cognitive-aging pathways in community older adults. Alzheimers Dement. 2025 05; 21(5):e70159.. View in PubMed
  • Examining the association between sleep apnea and total hippocampal volumes in cognitive impairment. Alzheimers Dement. 2025 04; 21(4):e70183.. View in PubMed
  • Combining 24-Hour Continuous Monitoring of Time-Locked Heart Rate, Physical Activity and Gait in Older Adults: Preliminary Findings. Sensors (Basel). 2025 Mar 20; 25(6).. View in PubMed