ARDMS SONOGRAPHY PRINCIPLES AND INSTRUMENTATION PRACTICE TEST -CCI REVIEW 2023

WHICH FREQUENCY IS BEST TO EVALUATE STRUCTURES LYING 1 TO 2 CM FROM THE TRANSDUCER? - Answer- 8-MHZ WHICH ULTRASOUND PARAMETER DIRECTLY AFFECTS AN ULTRASOUND BEAM'S INTENSITY? - Answer- OUTPUT POWER WHICH PARAMETER IS MOST LIKLEY TO AFFECT SPATIAL RESOLUTION? - Answer- DEPTH OF VISUALIZATION WHICH TERM DESCRIBES THE AVERAGING TOGETHER OF SCAN LINES FROM MULTIPLE ANGLES TO CREAT ONE IMAGE? - Answer- SPATIAL COMPOUNDING ACCORDING TO ALARA (AS LOW AS REASONABLY ACHIEVABLE) GUIDELINES, WHICH PARAMETER SHOULD BE MINIMIZED? - Answer- TRANSMIT POWER WHICH IMAGING MODE REQUIRES A BROADBAND TRANSDUCER? - Answer- CONTINUOUS WAVE DOPPLER WHAT AFFECTS THE BEAM WIDTH IN THE NEAR FIELD? - Answer- TRANSDUCER APERTURE WHICH CONTROL IMPROVES THE EFFECTS OF ATTENUATION? - Answer- A. DYNAMIC RANGE B. PULSE INVERSION C. MULTIPLE FOCAL ZONES D. TIME-GAIN COMPENSATION WHICH TERM DESCRIBES BLOOD FLOW CHANGES IN RESPONSE TO RESPIRATION? - Answer- A. PHASIC B. PARABOLIC C. SPONTANEOUS D. PULSATILE WHEN USING A 5 MHz TRANSDUCER, IN WHICH TISSUE IS THE ULTRASOUND WAVELENGTH SHORTEST? - Answer- FAT WHICH VARIABLE CAN CAUSE AN ACOUSTIC SHADOW ARIFACT? - Answer- SMALL ACOUSTIC IMPEDANCE MISMATCH WHICH IMAGING MODALITY CAN PROVIDE THE MOST ACCURATE MEASUREMENT OF TUMOR VOLUME? - Answer- B-MODE AN INCREASE IN WHICH PARAMETER WILL IMPROVE THE ACCURACY OF VELOCITY MEASUREMENTWITH AUTOCORRELATION? - Answer- COLOR FIELD OF VIEW TO WHICH ACOUSTIC VARIABLE IS PENETRATION DEPTH INVERSELY RELATED? - Answer- PROPAGATION SPEED THE CENTER FREQUENCY OF A TRANSDUCER DEPENDS PRIMARILY UPON WHICH CHARACTERISTIC OF THE CRYSTAL? - Answer- THICKNESS WHAT DOES CODED EXCITATION IN ADDITION TO PENETRATION? - Answer- SIGNAL-TO-NOISE RATIO WHICH FACTOR LIMITS IMAGE FRAME RATE? - Answer- SPEED OF SOUND IN TISSUE WHAT IS A DYNAMIC APERTURE? - Answer- APERTURE THAT INCREASES WITH INCREASING FOCAL LENGTH WHAT IS THE POTENTIAL EFFECT OF INCREASING THE PULSE REPETITION FREQUENCY (PRF)? - Answer- DEPTH AMBIGUITY HOW IS LATERAL RESOLUTION DETERMINED FOR A PULSE-ECHO SYSTEM USING A TISSUE-MIMICKING TEST OBJECT? - Answer- BY OBSERVING SPACES BETWEEN REFLECTORS PERPENDICULAR TO THE BEAM WITH HARMONIC IMAGING, HOW DOES ECHO FREQUENCY RELATE TO TRANSMITTED FREQUENCY? - Answer- TWICE THE TRANSMITTED FREQUENCY WHAT IS AN ADVANTAGE OF USING PULSE-WAVE DOPPLER VERSUS CONTINUOUS-WAVE DOPPLER? - Answer- PROVIDES DEPTH SPECIFICITY WHICH STATEMENT IS MOST ACCURATE REGARDING SURFACE RENDERING THREE-DIMENSIONAL ULTRASOUND IMAGING? - Answer- MINIMIZES EFFECT OF ATTENUATION ARTIFACTS WHAT IS DOPPLER SHIFT FREQUENCY? - Answer- DIFFERENCE BETWEEN THE TRANSMITTED ULTRASOUND FREQUENCY AND THE RECEIVED ULTRASOUND WHAT IS AN ADVANTAGE OF USING PULSED WAVE DOPPLER COMPARED TO CONTINUOUS WAVE DOPPLER? - Answer- ABILITY TO SELECT SAMPLE DEPTH WHICH DOPPLER ANGLE TO FLOW RESULTS IN THE GREATEST ABSOLUTE DOPPLER SHIFT? - Answer- 0 DEGREES HOW DOES FREQUENCY COMPOUNDING IMROVING IMAGE QUALITY? - Answer- IMPROVES DYNAMIC RANGE WHAT DETERMINES THE CENTER FREQUENCY OF A TRANSDUCER? - Answer- THICKNESS WHICH SCENARIO WILL PRODUCE NO DOPPLER SHIFT TO THE RECEIVER? - Answer- SOURCE AND RECEIVER MOVING AT THE SAME SPEED AND DIRECTION WHICH ANGLE OF INSONATION TO BLOOD FLOW PRODUCES THE MAXIMUM DOPPLER SHIFT? - Answer- 180 DEGREES WHICH TECHNIQUE INCREASES THE SHARPNESS OF HIGH CONTRAST BOUNDARIES? - Answer- EDGE ENHANCEMENT IN AN UNFOCUSED TRANSDUCER, WHICH TERM DEFINES THE REGION BETWEEN THE TRANSDUCER FACE AND THE POINT WHERE THE BEAM DIVERGES? - Answer- NEAR FIELD WHICH TECHNIQUE UTILIZES FREQUENCY MODULATION OF THE TRANSMITTED PULSE TO IMPROVE SIGNAL-TO-NOISE RATIO? - Answer- SPATIAL COMPOUNDING WHEN FLUID IS FLOWING AT A SLOW AND CONSTANT RATE WITHIN A LONG TUBE HAVING A UNIFORM DIAMETER, WHICH IS THE NATURE OF THE FLOW? - Answer- LAMINAR WHAT IS THE MOST COMMON CAUSE OF LOCALIZED VERTICAL NONUNIFORMITY IN A REAL-TIME B-MODE IMAGE? - Answer- IMPROPER TIME GAIN COMPENSATION WHICH IMAGING MODE REQUIRES TWO ELEMENTS MOUNTED SIDE BY SIDE? - Answer- CONTINUOUS WAVE DOPPLER WHICH CONTROL ALLOWS ADJUSTMENT FOR ATTENUATION AT SPECIFIC DEPTHS? - Answer- TIME GAIN COMPENSATION A SOUND WAVE PROPAGATES FASTEST THROUGH WHICH SUBSTANCE? - Answer- BONE WHICH TECHNIQUE RESULTS IN A THREE-DIMENSIONAL IMAGE? - Answer- SURFACE RENDERING WHICH VARIABLE DECREASES WHEN THE NUMBER OF ACOUSTIC LINES PER FRAME IS INCREASED WITHOUT CHANGING THE MAXIMUM DEPTH? - Answer- RECEIVER DYNAMIC RANGE WHICH OF THE FOLLOWING IS A BENEFIT OF USING CONTRAST AGENTS? - Answer- INCREASED AMPLITUDE OF THE RETURNING DOPPLER SIGNALS WHICH ACTION CAN IMPROVE AXIAL RESOLUTION OF A DISPLAYED IMAGE? - Answer- INCREASING THE TRANSDUCER FREQUENCY WHICH CONDITION MUST BE PRESENT FOR REFRACTION TO OCCUR? - Answer- A DIFFERENCE IN TISSUE PROPAGATION SPEEDS AND OBLIQUE INCIDENCE WHICH FACTOR DETERMINES THE DISPLAYED DEPTH OF A REFLECTOR? - Answer- PROPAGATION SPEED OF THE MEDIUM WHEN THE FOCAL POINT IN A B-MODE IMAGE IS ELECTRONICALLY CHANGED, WHICH TYPE OF FOCUSING IS IN USE? - Answer- DYNAMIC WHICH TYPE OF INTERACTION BETWEEN SOUND AND TISSUE IS MOST AFFECTED BY THE THERMAL INDEX (TI)? - Answer- ABSORPTION WHAT IS THE NYQUIST LIMIT IF A PULSED-WAVE DOPPLER INSTRUMENT HAS A PULSE REPETITION FREQUENCY OF 16 KHZ? - Answer- 8-KHZ WHICH SETTING OF AN ULTRASOUND SYSTEM GIVES THE SONOGAPHER THE ABILITY TO DISPLAY BOTH STRONG AND WEAK ECHOS? - Answer- RESOLUTION WHICH FACTOR REDUCES THE LIKELIHOOD OF ALIASING IN PULSED WAVE SPECTRAL DOPPLER? - Answer- INCREASED NYQUIST LIMIT