Can an image of a person using a radio telescope see a person from far away? Could a radio telescope be made to see someone walking on Mars?
In brief: you cannot resolve details of an object on a scale less than roughly a wavelength or two. The distance to the object only marginally affects this problem.
So take a look at the wavelengths your radiotelescope is capable of receiving and compare with dimensions of interesting "features" on a human body.
Further, as the comments pointed out, unless the human is either emitting radio-wavelength energy in significant amounts (unlikely) or is being "painted" by a large emitting source (as active radar systems do), you won't get any signal in the first place.