This calculator may be used to assess chemotherapy treatment response to Lymphoma according to the Cheson/WHO criteria. Patient ID and scan dates are optional. Insert at least one target site with pre-treatment and post-treatment measurements. Remember the tumour site must be at least 15mm to qualify as a target lesion. In contrast to RECIST 1.1 here bidimensional measurements are required. Ensure you place and save marking calipers on the images when reporting so the lesion can be identified on follow up studies.
'CALCULATE RESULT' : Generates a Cheson/WHO outcome for each entry and an aggregate outcome.
'CLEAR FIELDS':Empties the entry boxes.
'TEXT OUTPUT':Takes you to a new page with your post-treatment data, including the Knumber and scan date if entered so it can be pasted into a radiology report or copied into an email as required.
NOTE: For most lymphomas FDG-PET forms the main modality assessment using the Deauville criteria. However, the WHO/Cheson criteria are still used in FDG-negative lymphomas and in clincal trials.