Niels W Schurink, Simon R van Kranen, Joost J M van Griethuysen, Sander Roberti, Petur Snaebjornsson, Frans C H Bakers, Shira H de Bie, Gerlof P T Bosma, Vincent C Cappendijk, Remy W F Geenen, Peter A Neijenhuis, Gerald M Peterson, Cornelis J Veeken, Roy F A Vliegen, Femke P Peters, Nino Bogveradze, Najim El Khababi, Max J Lahaye, Monique Maas, Geerard L Beets, Regina G H Beets-Tan, Doenja M J Lambregts
OBJECTIVES: To develop and validate a multiparametric model to predict neoadjuvant treatment response in rectal cancer at baseline using a heterogeneous multicenter MRI dataset. METHODS: Baseline staging MRIs (T2W (T2-weighted)-MRI, diffusion-weighted imaging (DWI) / apparent diffusion coefficient (ADC)) of 509 patients (9 centres) treated with neoadjuvant chemoradiotherapy (CRT) were collected. Response was defined as (1) complete versus incomplete response, or (2) good (Mandard tumor regression grade (TRG) 1-2) versus poor response (TRG3-5)...
July 14, 2023: European Radiology