. Author manuscript; available in PMC: 2015 Oct 30.

Published in final edited form as: Semin Thorac Cardiovasc Surg. 2010 Spring;22(1):53–58. doi: 10.1053/j.semtcvs.2010.06.002

Table 1.

Modified RECIST Criteria

RESPONSE	CT MASS SIZE	CT MASS QUALITY	PET ^*
COMPLETE (Two of the following)	Lesion disappearance (scar) or less than 25% original size	Cyst cavity formation Low density	SUV<2.5
PARTIAL (One of the following)	More than 30% decrease in the sum LD of target lesions	Mass central necrosis or central cavity with liquid density	Decreased SUV or area of FDG uptake
STABLE LESION (One of the following)	Less than 30% decrease in the sum LD of target lesions	Mass solid appearance, no central necrosis or cavity	Unchanged SUV or area of FDG uptake
PROGRESSION (Two of the following)	Increase of more than 20% in sum LD of target lesions	Solid mass, invasion adjacent structures	Higher SUV or larger area of FDG uptake

PET done selectively; SUV: Standardized uptake value of fluorodeoxy glucose F18

FDG: Fluorodeoxy glucose F18

LD: Lesion diameter

(Reprinted from Fernando et al. ref 16 with permission)