BONE DENSITY ASRT-MODULE 1- FUNDAMENTALS EXAMS WITH ALL ANSWERS

BONE DENSITY ASRT-MODULE 1-
FUNDAMENTALS EXAMS WITH ALL
ANSWERS




Bone vgDensitometry vg(BD) vg- vg vgcorrect vganswer- vgdesigned vgto vgmeasure vga
vgpatient's vgbone vgmass vgusing vgthe vgprinciples vgof vgradiographic vgimaging.


vgrelies vgon vgmeasuring vgthe vgradiation vgabsorption vgof vgthe vgpatient's vgskeleton,and
vgcomparing vgthat vgagainst vgknown vgnormal vgvalues vg- vg vgcorrect vganswer-
vgDensitometry


vgradiographic vgabsorptiometry,
dual-photon vgabsorptiometry, vg
single-photon vgabsorptiometry, vg
quantitative vgultrasound, vg
dual-energy vgx-ray vgabsorptiometry, vgor vgDXA, vg
and vgquantitative vgcomputed vgtomography, vgor vgQCT vg- vg vgcorrect vganswer- vg6
vgways vgto vgmeasure vgbone vgdensity


vgDensitometry vgwas vgfirst vgdescribed vgmore vgthan vg_________ vgyears vgago, vgin
vgthe vgfield vgof vg__________. vg- vg vgcorrect vganswer- vg100; vgDentistry


vgbone vgloss vghad vgto vgreach vga vgthreshold vgof vgat vgleast vg________ vgto vgbe
vgclearly vgvisualized vgusing vga vgstandard vgx-ray vgimage vg- vg vgcorrect vganswer- vg40%


vgtwo vgimages vgof vga vghand vgwere vgtaken vgusing vgstandard vgx-ray vgequipment vgat
vgslightly vgvarying vgexposures. vgA vgstep vgwedge vgwas vgplaced vgnext vgto vgthe vgmiddle

, vgphalanx vgof vgthe vgindex vgfinger vgon vgthe vgfilm vgduring vgthe vgx-ray vgexposure, vgand
vgwas vgused vgas vga vgscale vgto vgevaluate vgbone vgdensity. vg- vg vgcorrect vganswer-
vgearly vgradiographic vgabsorptiometry


vgstep vgwedges vgwere vgusually vgmade vgfrom? vg- vg vgcorrect vganswer- vgIvory vgor
vgaluminum


vgis vgthe vgassessment vgof vgbone vghealth vgusing vgstandard vgx-rays, vgby vgimaging
vgthe vghand vgand vgmeasuring vgthe vgwidth vgof vgcortical vgbone vg- vg vgcorrect vganswer-
vgRadiogrammetry


vgused vgfor vgnearly vg50 vgyears. vgOriginally, vgthe vgarea vgof vgthe vgmetacarpal vgbone
vgwas vgmeasured vgusing vgstandard vgx-rays vgof vgthe vghand vgand vgfine vgcalipers, vgor
vga vgruler. vgThe vgtotal vgwidth vgand vgmedullary vgwidth vgwere vgmeasured vgon vgthe
vgmetacarpals vgof vgthe vgring vgfinger, vglong, vgor vgmiddle vgfinger, vgand vgthe vgindex
vgfinger. vgThis vgmeasurement vgwas vgmade vgby vgsubtracting vgthe vgmedullary vgwidth
vgfrom vgthe vgtotal vgwidth vgof vgthe vgbone, vgleaving vgonly vgthe vgcortical vgwidth. vg- vg
vgcorrect vganswer- vgMetacarpal vgradiogrammetry


vgis vgcalculated vgby vgtaking vgthe vgtotal vgwidth vgand vgdividing vgit vgby vgthe vgcortical
vgwidth, vgyielding vga vgratio. vg- vg vgcorrect vganswer- vgMetacarpal vgindex


vgis vgjust vgthe vgmetacarpal vgindex vgstated vgas vga vgpercentage vginstead vgof vga vgratio
vg- vg vgcorrect vganswer- vgThe vghand vgscore


vgThe vgprimary vglimitation vgof vgradiogrammetry vgmeasurements vgis vgthat vgthe
vgconcept vgis vgfounded vgon vgthe vgfalse vgnotion vgthat vgthe vgmetacarpal vgis vga vgperfect
vgcylinder, vgand vghollow. vgAnother vglimitation vgof vgradiogrammetry vgis vgthat vgits
vgprecision vgvaries vgbased vgon vgthe vgtype vgof vgmeasurement vgused. vg- vg vgcorrect
vganswer- vgLimitations vgof vgMetacarpal vgRadiogrammetry


vgis vgoften vgproportional vgto vgbone vgdensity vgthroughout vgthe vgbody. vg- vg vgcorrect
vganswer- vgmetacarpal vgdensity


vgSingle vgphoton vgabsorptiometry, vgor vgSPA vgwas vginvented vgby vgtwo vgresearchers,
vg__________________________ vg, vgin vgThe vg1970s vgand vg1980s vg- vg vgcorrect
vganswer- vgCameron vgand vgSorenson


vgused vga vgsingle-energy vgphoton vgbeam vgthat vgpassed vgthrough vgthe vgbone vgand
vgtissue vgof vgthe vgpatient. vgThe vgamount vgof vgmineral vgdetected vgby vgthe vgbeam
vgwas vgmeasured vgby vgsubtracting vgthe vgbeam vgintensity vgleaving vgthe vgarea
vgscanned vgfrom vgthe vgoriginal vgbeam vg
intensity. vg- vg vgcorrect vganswer- vgSPA