ULTRASOUND PHYSICS CH. 13,16,18,19, QUESTIONS AND ANSWERS A GRADED

ULTRASOUND PHYSICS CH. 13,16,18,19,
QUESTIONS AND ANSWERS A GRADED



Whichvofvthevfollowingvwillvimprovevavsystemsvtemporalvresolution?
A.vincreasedvsectorvangle
B.vincreasedvlinevdensityv
C.vincreasedvPRF
D.vincreasedvfrequencyv-vC

TvorvF?
vAnvultrasoundvsystemvwithvavlongervpulsevdurationvwillvgenerallyvhavevbettervtemporalvre

solution.v-vF

TvorvF?
vAnvultrasoundvsystemvwithvavshortervPRPvwillvhavevbettervtemporalvresolutionvthanvavsyst

emvwithvavlongervPRP.v-vT

Whichvchoicevwillvresultvinvincreasedvframevratevandvtemporalvresolution?
A.vdecreasedvpropvspeed
B.vdecreasedvsectorvsize
C.vdecreasedvlateralvresolution
D.vdecreasedvPRFv-vB

Whichv2vcontrolsvdeterminevavsystem'svtemporalvresolution?
A.vframevratevandvsectorvsize
B.vfocalvzonesvandvsectorvdepth
C.vdepthvofvviewvandvpulsesvpervimagev-vC

Whatvisvthevprimaryvdisadvantagevofvmultiplevfocalvzonesvalongveachvscanvlinevofvav2-
dvimage?
A.vimprovedvtemporalvresolution
B.vdecreasedvtemporalvresolution
C.vimprovedvlateralvresolution
D.vimprovedvlongitudinalvresolutionv-vB

, Whatvisvthevprimaryvadvantagevofvmultiplevfocalvzonesvalongveachvscanvlinevofvav2-
dvimage?
A.vimprovedvtemporalvresolution
B.vdecreasedvtemporalvresoultion
C.vimprovedvlateralvresolutionv-vC

TvorvF?
vWithvsectorvscanning,vimagesvwithvgreatervdetailv(spatialvresolution)varevcreatedvwhenvth

evnumbervofvacousticvpulsesvpervdegreevofvsectorvisvincreased.v-vT

AnvUSvsystemvwithvav4.0MHzvtransducervisvusedvtovimagevstructuresvasvdeepvasv15vcm.v
Twentyvimagesvarevproducedveachvsecond,veachvrequiringv100vacousticvpulses.vwhatvisvt
hevPRFvofvthevsystem?
A.v1500vHz
B.v300vHz
C.v2,000vHzv-vC

Whichvofvthevfollowingvsectorvimagingvsystemsvwillvhavevthevbestvimagevdetailvifvallvotherv
parametersvarevidentical?
A.vav90vdegreevsectorvwithv100vpulses/vimage
B.vav60vdegreevsectorvwithv60vpulses/vimage
C.vav70vdegreevsectorvwithv84vpulses/vimagev-vC

TvorvF?
vInvdiagnosticvimaging,vitvisvpossiblevtovimagevwithv200vlines/

vframe,v15vframes/vsecondvandvavmaximumvimagingvdepthvofv20vcm.v-vT



Ofvthevfollowing,vwhichvimagingvmodalityvhasvthevpoorestvtemoporalvresolution?
A.v2-d,vreal-time
B.vA-mode
C.vcolorvflowvimagingv-vC

Whichvultrasoundvimagingvmodalityvhasvthevbestvtemporalvresolution?
A.vm-mode
B.vduplexvimaging
C.vcolorvflowvimagingv-vA

TvorvF?
vAvdiagnosticvultrasoundvsystemvcanvproducev20vimagesvpervsecond,vtovavmaximumvdept

hvofv20vcm,vandvcreateveachvimagevwithv200vacousticvpulses.v-vF

Allvofvthevfollowingvreducevtemporalvresolutionvbyvincreasingvthvenumbervofvpulsesvpervim
agevexcept:
A.vincreasingvthevnumbervofvfoci
B.vincreasingvdepthvofvview