Assertion: osteoporosis's doctor | /r/CapableOf | use regular x-rays
Facets:
value: in the past
type: TEMPORAL
value: to look for osteoporosis
type: PURPOSE
Source sentences:
text: In the past doctors used regular X-rays to look for osteoporosis, but they could pick up changes only after a 25 to 40 percent drop in bone density -- by which time the disease is already far advanced.