Skip to main content

Table 1 summary of the response criteria used in the study

From: RECIST and CHOI criteria in the evaluation of tumor response in patients with metastatic colorectal cancer treated with regorafenib, a prospective multicenter study

 RECIST 1.1RECIST 10%CHOImCHOI
Measurementlargest Diameterlargest diameterlargest diameter + attenuationalargest diameter +
attenuationa
RespondersDecrease ≥30% of the sum of LD of TL or complete responseDecrease >10% of the sum of LD of TL or complete responseDecrease ≥10% of the sum of LD of TL or ≥ 15% of the mean attenuation of TLDecrease ≥10% of the sum of LD of TL and ≥ 15% of the mean attenuation of TL
Non respondersDo not meet the responder criteria
  1. aattenuation in Hounsfield units assessed in a free-hand region of interest drawn about 1 mm inside the lesion boundaries on the CECT section whose largest diameter had been measured
  2. LD largest diameter, TL Target lesions, CECT Contrast enhanced computed tomography