Is it possible to see an image with radio telescope of something not so far away in detail? 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?

https://space.stackexchange.com/questions/30477/could-we-see-someone-walking-on-mars-from-earth
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.