Ren-Dih Sheu, PhD, DABR, Author at Grand Rounds in Urology

Ren-Dih Sheu, PhD, DABR

Mount Sinai Health System

New York, New York

Ren-Dih Sheu, PhD, DABR, is an Associate Professor of Medical Physics in the Department of Radiation Oncology and the Assistant Chief Physicist at Mount Sinai Health System in New York, New York. Dr. Sheu specializes in combining clinical experience with software development to improve the safety and efficiency of radiation therapy.

Dr. Sheu completed his post-doctoral clinical training at Memorial Sloan Kettering Cancer Center in New York, New York. He is an American Board of Radiology-certified physicist in Therapeutic Medical Physics. Dr. Sheu has upgraded physics programs and developed a collection of in-house software to streamline the workflow of treatment planning while prioritizing the safety of patients. These tools have been widely and consistently used across the Department of Radiation Oncology in Mount Sinai Health Network.

Dr. Sheu was elected as the President of the Radiological and Medical Physics Society of New York in 2023. He also serves as a committee member on the MPPG 18 working group. Dr. Sheu is dedicated to contributing not only to clinical operations and patient care but also to education and research, and has additionally contributed to over 40 publications.

Talks by Ren-Dih Sheu, PhD, DABR

Panel Discussion: Didactic Session 3: Focal Therapy

Arvin K. George, MD, Nelson N. Stone, MD, Juanita M. Crook, MD, FRCPC, Ren-Dih Sheu, PhD, DABR and Michael A. Gorin, MD | Aug 2024

Arvin K. George, MD; Nelson N. Stone, MD;Juanita M. Crook, MD, FRCPC; Ren-Dih Sheu, PhD, DABR; Michael A. Gorin, MD

Physics of Intraoperative Dose Planning for Focal Brachytherapy

Ren-Dih Sheu, PhD, DABR | Nov 2023

Ren-Dih Sheu, PhD, DABR, presents an overview of intraoperative dose planning for focal brachytherapy in prostate cancer treatment. He begins by presenting the two most common options for Focal Radiotherapy: Brachytherapy using LDR Seed Implants and EBRT using Stereotactic Radiosurgery (SRS). He compares the reaction dose fall-offs for each treatment, demonstrating Brachytherapy’s faster radiation fall-off compared to EBRT, despite its higher initial radiation dose.

Dr. Sheu then lists the steps for determining the initial dose and other patient-specific factors affecting the implementation of focal brachytherapy. He highlights factors associated with late local failure and increased patient mortality, emphasizing the importance of high Biologically Effective Doses (BEDs) in preventing recurrence.

Dr. Sheu provides the audience with the equations for determining appropriate BED in Brachytherapy and EBRT patients. Finally, he covers techniques for limiting radiation damage to the patient.