ARDMS SPI EXAM 2026-2027 150 QUESTIONS AND /ARDMS SPI EXAM 150 QUESTIONS AND

ARDMS SPI EXAM 150

QUESTIONS AND

Question 1 A ________ is a B mode operation that provides a cross section of the region of interest

as the sound beam sweeps through the region of interest:

Select one:

• B scan
• A mode
• A scan
• M mode

B scan

Question 2

A "bin" in Doppler spectral analysis represents a:

Select one:

• velocity range
• group of pulses
• sample volume
• pixel

velocity range

Question 3

A 3 bit matrix has a gray shade capacity of:

Select one:

• 3
• 1
• 8
• 16

8

Question 4

A 5 MHz transducer used in a pulse-echo system will generally produce

Select one:

• a wide band of frequencies above 5 MHz
• a wide band of frequencies centered at 5 MHz
• a narrow band of frequencies centered at 5 MHz
• frequencies only at 5 MHz

a wide band of frequencies centered at 5 MHz

Question 5

A 6 bit memory can represent how many shades of gray?

Select one:

• 32
• 12
• 64
• 16

64

Question 6

A binary digit is called a:

Select one:

• Byte
• Bin
• Chip
• Bit

Bit

Question 7

A binary word is called a:

Select one:

• Bin
• Byte
• Chip
• Bit

Byte

Question 8

A change in the frequency of sound relative to the motion of the source and/or the

observer is known as the Doppler:

Select one:

• Shift
• Velocity
• Equation
• Display

Shift

Question 9

A continuous wave transducer is 12 mm. the sound beam width at two near zone length

is:

Select one:

• 9 mm
• 12 mm
• 3 mm
• 6 mm

12 mm Question 10

A continuous wave unfocused transducer is 12 mm. The sound beam width at one near

zone length is:

Select one:

• 12 mm
• 9 mm
• 3 mm
• 6 mm
• mm

Question 11

A digital scan converter:

Select one:

• part of a transducer
• a computer memory
• performs FFT (Fast Fourier Transform)
• part of a receiver

a computer memory

Question 12

A display that is limited to only black and white, with no other shades of gray is called

Select one:

• Binary
• Dynamic
• Bistable

Bistable

Question 13

A Doppler spectrum below the baseline represents blood flow:

Select one:

• Bidirectional flow
• Away from the transducer
• Towards the transducer
• Mirroring

Away from the transducer

Question 14

A hydrophone is used to measure

Select one:

• water energy
• electrical energy
• water levels
• acoustic energy

acoustic energy

Question 15

A method used to unwrap a PW aliased signal is:

Select one:

• Increase transmit frequency
• Decreased PRF
• Zero baseline shift
• Increase the sample gate size

Zero baseline shift

Question 16

A perimeter measurement is a measure of:

Select one:

• volume
• area
• distance
• presssure

Distance

Question 17

A picture element which may hold a binary digit/shade of gray:

Select one:

• Pixel
• Transducer
• Matrix
• Image display

Pixel

Question 18

A reflection will be placed at the correct depth because the ultrasound machine will

utilize the ______ equation:

Select one:

• Doppler