Milo's doctors believe he might have schizophrenia, but before they make their final diagnosis, they want to study detailed, three-dimensional images of milo's brain structures. the technique the doctors are most likely to use in this case would be:

The technique the doctors are most likley to use in this case would be "a magnetic resonance imaging (MRI) scan".

Magnetic resonance imaging (MRI) is a test that utilizes great magnets, radio waves, and a PC to make detailed pictures inside your body.  

Your doctor can utilize this test to analyze you or to perceive how well you've reacted to treatment. Not at all like X-beams and CT scan, a MRI doesn't utilize radiation.  

MRI enables a doctor  to analyze a disease or damage, and it can screen how well you're doing with a treatment. X-rays should be possible on various parts of your body.