1994d-136 absorptiometry absorptiométriephotonique aged biomineralization bonedevelopment bonediseases bones calcification congresses densitométrierayons-x diagnosis diseases disorders growth gériatrie maladies maladiesosseusesmétaboliques metabolism methods métabolisme méthode olderpeople os osteogenesis osteopatias osteoporose osteoporosis ostéoporose photon physiologic radiographie radiography rheumaticdiseases rheumatism rhumatisme röntgendiagnostiek troublesdu vitamind we200i631982c we250w137e1994 we544g434r1982