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Bone Density Registry Exam/34 Q’s and A’s
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Bone Density Registry Exam/34 Q’s and A’s
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Bone Density Registry Exam/34 Q’s and A’sWhat is Bone Density - -Quantifiable measurement of strength of bone
-Why Bone Density - -Best way to diagnose osteoporosis. predicts future
fracture risk, monitor therapeutic treatment
-Dual beam - -using 2 energies allows a DXA unit to record attenuation
profiles at 2 different photon energies low and high
-DXA - -Gold standard in bone density. Excellent precision, low radiation
dose
-Indications for VFA - -Low tscore + age, height loss, fragility fracture,
steroid use
-Normal Tscore - --1.0 and up
-osteopenic Tscore - --1.0 through-2.4
-Osteoprotic tscore - --2.5 and lower
-cortical bone - -80% of the skeletal mass but accounts for only a small
portion of total bone turnover. compact dense and strong, appendicular
skeleton, shaft of long bones.
-Trabecular bone - -20% of bone mass but has the higher amount of bone
turnover, spongey/honeycomb, axial skeleton. ends of long bones
-Femur and forearm physiology - -Long bones, Higher amount of trabecular
bone, built for strength
-Vertebral Bone physiology - -protects spinal cord, supports weight of trunk,
mostly trabecular with and outer layer of tissue
-Osteoblasts - -Bone Building cells. Ossification and calcification
-Osteoclasts - -function in reabsorption and removal of bone. originate in
bone marrow
-Primary osteoporosis - -type 1- Most common. only women, high
menopausal bone loss.
type 2- men and women 70 years or older
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