Congress:
ECR25
Poster Number:
C-28508
Type:
Poster: EPOS Radiologist (scientific)
DOI:
10.26044/ecr2025/C-28508
Authorblock:
S. Lo, R. F. Valenzuela, E. Duran-Sierra, M. Antony, B. Amini, J. E. Madewell, W. Murphy, J. Espinoza, C. M. Costelloe; Houston, TX/US
Disclosures:
Sam Lo:
Nothing to disclose
Raul Fernando Valenzuela:
Nothing to disclose
Elvis Duran-Sierra:
Nothing to disclose
Mathew Antony:
Nothing to disclose
Behrang Amini:
Nothing to disclose
John Edward Madewell:
Nothing to disclose
William Murphy:
Nothing to disclose
Jossue Espinoza:
Nothing to disclose
Colleen M Costelloe:
Nothing to disclose
Keywords:
Computer applications, Musculoskeletal soft tissue, Oncology, MR, MR-Diffusion/Perfusion, Imaging sequences, Radiation therapy / Oncology, Cancer
An IRB-approved retrospective study included 11 extremity and pelvic RMS patients with pre-operative mp-MRI, including diffusion-weighted imaging (DWI), contrast-enhanced susceptibility-weighted imaging (CE-SWI), and perfusion-weighted imaging with dynamic-contrast-enhancement (PWI/DCE), with surgical resection on 02/2021-06/2024. Lesions were classified on 6 CE-SWI and 6 PWI/DCE morphologic patterns. Time-intensity curves (TICs) were classified as types I-V. Patients were categorized by the percentage of pathology-assessed treatment effect (PATE) in the surgical specimen as Responders (>=90% PATE, n=3) and partial/non-responders (<90% PATE, n=8).