I have no idea of who this Boyle is or even if he is really a doctor.
As near as I can tell, he is Thomas Patrick Boyle, MD, of DaVinci Diagnostic Imaging, Boca Raton.
I am not a doc, but I would bet Dr Boyle has forgotten more about radiology than that quack Cranford ever knew. If you want to understand Cranford's qualifications, read that article Electowoman linked above.