If I understand correctly what you want, you can have an expression for the image in the Image Properties. Something like below based on a parameter:
=IIf(Parameters!Database.Value = "CCDApp", "/CDMS/Images/CCD_Annual_TB_Screening_Questionnaire.png", "/CDMS/Images/CDAZ_Annual_TB_Screening_Questionnaire.png")
I think you could build the path dynamically also.