Bone Density Maine Guide Already Graded A+

Bone Density Maine Guide b b b




bone ndensitometry n- n ncorrect nanswer- nthe nart nand nscience nof nmeasuring nthe nbone
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nmineral ncontent nand nbone nmineral ndensity nof nspecific nskeletal nsites nor nthe nentire
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nbody
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b nbone nmeasurement nvalues n- n ncorrect nanswer- nused nto nassess nbone nstrength,
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ndiagnose ndiseases nassociated nwith nlow nbone ndensity n(like nosteoporosis), nmonitor
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nthe neffects nof ntherapy nfor nsuch ndiseases, nand npredict nrisk nof nfuture nfractures
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b ndual nx-ray nabsorptionmetry n(DXA) n- n ncorrect nanswer- nthe nmost nversatile ntechnique
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nfor nbone ndensitometry
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n-low nradiation ndose
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-wide navailability n b b




-ease nof nuse b b




-short nscan ntime b b




-high-resolution nimages n b b




-good nprecision b




-stable ncalibration n- n ncorrect nanswer- nthe nDXA nscan nhas nthe nadvantages nof--
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b nsubtraction ntechnique n- n ncorrect nanswer- nthe ndifferences nbw nDXA nand nradiography
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nare nthat nDXA nuses na nwhat?
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b nphoton nenergies n- n ncorrect nanswer- ndual nx-ray nmeans nthat nto neliminate nthe
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ncontributions nof nsoft ntissue nand nand nmeasure nthe nx-rat nattenuation nof nbone nalone,
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nyou ndo nthis nby nscanning nat ntwo ndifferent nx-ray n__ n__
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, b ndiagnosis n- n ncorrect nanswer- nDXA nare nonly nused nfor nthe npurpose nof nconfirming
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ncorrect npositioning nof nthe npt nand ncorrect nplacement nof nthe nregion nof ninterest, nit nis
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nnot nused nfor?
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b nthree n- n ncorrect nanswer- nhow nmany nDXA nmanufacturers nare nin nthe nUS?
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b nlower n- n ncorrect nanswer- nthe neffective nradiation ndose nfor nDXA nis nconsiderably n__
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nthan nfor nradiography
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b nosteoporosis n- n ncorrect nanswer- nan nundetected nand noverlooked ndisease nuntil nthe b b b b b b b b b b b




n1920s nwhen nradiography nrevealed nthe ndetection nof ndecreased ndensity nin nbones
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b nradiographic nabsorpitiometry n- n ncorrect nanswer- ninvolved ntaking na nradiograph nof b b b b b b b b b b




nbone nwith na nknown nstandard nplaced nand noptically ncomparing nthe ndensities
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b nradiogammetry n- n ncorrect nanswer- nwas nintroduced nin nthe n1960s npartly nin nresponse b b b b b b b b b b b b




nto nthe nmeasurements nof nbone nloss nperformed nin nastronauts
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b ndecreases n- n ncorrect nanswer- nwith nradiogammetry, nit nwas nfound nthat nas nbone nloss
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nprogresses, nthe nthickness nof nthe nouter nshell nof nthe nsmall ntubular nbones n___ nas
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nthe ninner ncavity nenlarges
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b nquantitive ncomputed ntomography n- n ncorrect nanswer- nadapted nin nthe nlate n1970s
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nwith nthe nuse nof nspecialized nsoftware nand nreference nphantoms nwhich nallowed nfor
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nquantitive nmeasurements nof nthe ncentral narea nof nthe nvertebral nbody nwhere nearly
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nbone nloss noccurs
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b nsingle nphoton nabsorptiometry(SPA)/dual nphoton nabsorptiometry n(DPA) n- n ncorrect
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nanswer- nintroduced nin nthe n70s nand n80s nand nis nbased non nthe nphysics nprinciple
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nsimilar nto nDXA; nthis nrelies non na nwater nbath nto neliminate nthe neffects nof nsoft ntissue
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b nDPA n- n ncorrect nanswer- nused nphotons nof n2 nenergies nand nwas nused nto nassess
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ncites nin nthe ncentral nskeleton n(l-spine nand nprox nfemur)
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b ncollimated nscintillation ncounter n- n ncorrect nanswer- nwith nthe nDPA, nthe nintensity nof
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nthe nattenuated nbeam nwas nmeasured nby na n______, nand nthe nbone nmineral nwas
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nquantified
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b nthe nfirst ncommercial nDXA nscanner n- n ncorrect nanswer- nfirst nintroduced nin n1987 nand
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nused na nradioisotope nfor nits nsource nbefore nbeing nreplaced nby nan nx-ray ntube
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b n-smaller
-more nportable b




-less ncomplex n- n ncorrect nanswer- nin nthe nlate n90s, nDXA nscanners nhave nbecome
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nmore nwhat?
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