ESTRO 2025 - Abstract Book

S1214

Clinical – Lower GI

ESTRO 2025

Conclusion: Early indication of treatment response in rectal cancer can be achieved by ADC assessment at baseline and sequentially during CRT, possibly already after the first week of treatment. These encouraging results should be validated in a second cohort.

Keywords: ADC, longitudinal acquisitions, long-course RT

References: [1] Bahadoer RR et al, Lancet Oncol. 2021,22,29–42. DOI: 10.1016/S1470-2045(20)30555-6. [2] Conroy T et al, Lancet Oncol. 2021,22,702–715. DOI: 10.1016/S1470-2045(21)00079-6. [3] Pham TT et al, Br J Radiol. 2017 Apr;90(1072):20151078. DOI: 10.1259/bjr.20151078. [4] Dworak O et al, Int J Colorectal Dis. 1997;12(1):19-23. DOI: 10.1007/s003840050072.