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Exam (elaborations)

ARDMS SPI EXAM LATEST UPDATE COMPREHENSIVE QUESTIONS AND CORRECT

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ARDMS SPI EXAM LATEST UPDATE COMPREHENSIVE QUESTIONS AND CORRECT

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Uploaded on
September 3, 2025
Number of pages
57
Written in
2025/2026
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ARDMS SPI EXAM LATEST 2024-
./ ./ ./ ./


2025 UPDATE COMPREHENSIVE QUESTIONS AND CORRECT
./ ./ ./ ./ ./ ./


ANSWERS| ALREADY GRADED A+/PASSED 100%
./ ./ ./ ./




Example./of./nonspecular./reflector./-./correct./answer./ red./blood./cells


What./happens./to./spatial./pulse./length./when./frequency./increases?./-
./correct./answer./ decreases



Axial./resolution./is./dependent./on?./-./correct./answer./ wavelength



Lateral./resolution./is./dependent./on?./-./correct./answer./ beam./diameter


Where./does./the./beam./of./an./unfocused./transducer./diverge?./-
./correct./answer./ Fraunhofer./zone


Reverberation./artifacts./are./a./result./of./-
./correct./answer./ two./or./more./strong./reflecting./surfaces


True/False:./Grating./lobes./are./essential./for./the./proper./operation./of./a./linear./phased./array../-
./correct./answer./ False


True/False:./Electronically./steered./scanners./always./produce./higher./resolution./images./than./do./m
echanically./steered./scanners../-./correct./answer./ False


True/False:./An./annular./array./scanner./uses./mechanical./beam./steering../-
./correct./answer./ True


True/False:./A./linear./sequenced./array./cannot./be./dynamically./focused../-
./correct./answer./ False

,registration./or./B-mode./alignment./-
./correct./answer./ Which./AIUM./test./object./function./utilizes./all./the./groups./of./wires./in./the./AIUM
./100./mm./test./object?




axial./resolution./-
./correct./answer./ Which./AIUM./test./object./function./utilizes./the./A./group./of./wires./in./the./AIUM./1
00./mm./test./object?


lateral./resolution./-
./correct./answer./ Which./AIUM./test./object./function./utilizes./the./B./group./of./wires./in./the./AIUM./1
00./mm./test./object?


dead./zone./-
./correct./answer./ Which./AIUM./test./object./function./utilizes./the./D./group./of./wires./in./the./AIUM./1
00./mm./test./object?


depth./calibration./-
./correct./answer./ Which./AIUM./test./object./function./utilizes./the./C./or./E./groups./of./wires./in./the./A
IUM./100./mm./test./object?


What./happens./to./axial./resolution./when./spatial./pulse./length./is./decreased?./-
./correct./answer./ improves


How./much./will./a./3.5./MHz./pulse./be./attenuated./after./passing./through./2./cm./of./soft./tissue?./-
./correct./answer./ 3.5./dB



Propagation./speed./errors./result./in./-./correct./answer./ improper./axial./position



Enhancement./is./caused./by./-./correct./answer./ weakly./attenuating./structures


The./Doppler./shift./frequency./is./-
./correct./answer./ directly./proportional./to./the./velocity./of./the./reflector

,The./number./of./frames./per./second./necessary./for./a./real-time./image./to./be./flicker./free./is./-
./correct./answer./ more./than./15


True/False:./The./SPTA./intensity./will./always./be./larger./than./the./SATA./intensity../-
./correct./answer./ True


The./intensity./of./the./ultrasound./beam./is./usually./greater./at./the./focal./zone./because./of./-
./correct./answer./ the./smaller./beam./diameter



If./the./amplitude./is./doubled,./the./intensity./is./-./correct./answer./ quadrupled



The./attenuation./for./soft./tissue./is./-./correct./answer./ increased./with./tissue./thickness


The./acoustic./impedance./of./the./matching./layer./-
./correct./answer./ can./be./chosen./to./improve./transmission./into./the./body


True/False:./In./a./pulse-echo./system,./the./quality./factor./should./be./made./as./large./as./possible../-
./correct./answer./ False



True/False:./The./beam./diameter./is./constant./in./the./near./zone../-./correct./answer./ False



The./operating./frequency./is./dependent./on./-./correct./answer./ thickness./of./the./crystal



The./period./of./an./ultrasound./wave./is./-./correct./answer./ the./time./of./one./wavelength


The./dynamic./range./of./a./system./is./-
./correct./answer./ the./ratio./of./smallest./to./largest./power./level./that./the./system./can./handle


True/False:./The./intensity./of./an./ultrasonic./beam./can./be./measured./with./radiation./force./balance../-
./correct./answer./ True

, Increasing./the./pulse./repetition./period./-
./correct./answer./ increases./the./maximum./depth./that./can./be./imaged



Ultrasound./bioeffects./-./correct./answer./ are./not./confirmed./below./100./mW/cm²./SPTA


True/False:./No./refraction./can./occur./at./an./interface./if./the./media./impedances./are./equal../-
./correct./answer./ False


True/False:./Smaller./transducers./always./produce./smaller./beam./diameters../-
./correct./answer./ False


True/False:./The./ultrasound./beam./profile./can./be./measured./with./a./hydrophone../-
./correct./answer./ True


True/False:./The./pulsed-
Doppler./system./yields./better./depth./resolution./than./the./continuous./wave./(CW)./system../-
./correct./answer./ True


True/False:./The./gray-
scale./display./was./made./possible./when./digital./scan./converters./replaced./analog./scan./converters../
-./correct./answer./ False


True/False:./Videotape./recorders./operating./at./30./frames./per./second./cannot./be./used./with./mechan
ical./real-time./units./because./the./fram./rate./is./too./slow../-./correct./answer./ False


True/False:./Linear./phased./array./scanners./need./no./form./of./mechanical./focusing./because./focusin
g./is./performed./electronically../-./correct./answer./ False


True/False:./The./fram./rate./of./real-
time./scanners./depends./on./the./number./of./lines./used./to./form./the./image../-
./correct./answer./ True


True/False:./It./is./not./possible./to./steer./an./annular./phased./array./electronically../-
./correct./answer./ True

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