  We adopt general relativistic ray-tracing (GRRT) schemes to study images of
Kerr-MOG black holes surrounded by geometrically thick magnetized equilibrium
tori, which belong to steady-state solutions of thick accretion disks within
the framework of general relativistic magnetohydrodynamics (GRMHD). The black
hole possesses an extra dimensionless MOG parameter described its deviation
from usual Kerr one. Our results show that the presence of the MOG parameter
leads to smaller disks in size, but enhances the total flux density and peak
brightness in their images. Combining with observation data of black hole M87*
from the Event Horizon Telescope (EHT), we make a constraint on parameters of
the Kerr-MOG black hole and find that the presence of the MOG parameter
broadens the allowable range of black hole spin.
