CAT scan -- fall or stroke?

My training is as a chemist, none in any
medical profession.  I had a thought, probably
after reading an article somewhere.

A GOOGLE search with <stroke brain CAT scan>
and <fall brain CAT scan> gets results that
indicate that both can be detected by CAT.

The elderly can suffer a fall or a stroke.

Injury to the brain due to a fall is
described as "subdural hematoma" (bleeding
on the surface of the brain).

Injury to the brain by a stroke can be
"ischemic" (clot-caused) or "hemorrhagic"
(bleeding).  CAT can tell which has
occurred.

First:  Can CAT distinguish an
injury due to a fall, from an injury
caused by an ischemic stroke?  How/why?

Second:  Can CAT distinguish an
injury due to a fall, from an injury
caused by a hemorrhagic stroke?  How/why?

Lastly:  is there any radiological or
clinical difference between "subdural
hematoma" and a "hemorrhagic stroke"?


  Mark (...or CT...whatever.)