DMSO 1210 Exam 1 Test Questions and
Correct Answers 2026.
Infrasound - Answer <2 Hz
Audible sound - Answer 2-20,000 Hz
Ultrasound - Answer >20,000 Hz
Diagnostic ultrasound - Answer between 2 and 15 MHz (or higher)
Acoustic windows (sonographic window) - Answer Optimal location on body for placement of
the transducer to demonstrate both normal anatomy and pathology
Radiologist - Answer One who interprets or reads imaging exams (cardiologists, vascular
surgeons and OBs may be the ones interpreting their respective scans)
Different types of imaging - Answer Radiography, fluoroscopy, myelography, arthrography, GI
imaging, computed tomography (CT), mammography, positron emission tomography (PET),
nuclear medicine technology, magnetic resonance imaging (MRI), magnetic resonance
angiogram (MRA)
IMAGE process - Answer Investigate history
Make hypothesis
Analyze with sonography
Gather findings
Evaluate for connections
Sono images - Answer Obtained in two scan planes- Sagittal and transverse
Sono reports - Answer Docs with basic info about sono exam; compare normal and abnormal
but do NOT use diagnostic terms (see basic sonographic descriptive language)
Anechoic - Answer Fluid filled structure, black on image
Echogenic - Answer Bright/gray structure, produces echoes
, Sonographic reasoning - Answer 1- clinical history
2-clinical hypothesis
3- investigative imagine
4- Sonographic findings (recall clinical history and hypothesis)
5- clinical correlation
Sound - Answer Form of energy produced when vibrating source causes molecules in medium
to move back and forth
Acoustics - Answer Scientific study of sound
A-mode - Answer Amplitude mode; represents depth of returning echo in x-axis and strength
of reflector on y-axis
Plus if sound sent out to create one scan line of info interpreted to represent depth and
amplitude
B-mode - Answer Brightness; displays returning ultrasound signal as dot on monitor
(grayscale)
Dot has varying degrees of brightness based on strength of returning echo
M-mode - Answer Motion; documents movement of structures in body along single scan live
Y-axis= depth, x-axis= time
Pulse wave Doppler - Answer the Doppler technique that uses pulses of sound to obtain
Doppler signals from a user-specified depth
Continuous Wave Doppler - Answer Combines element of continuous waves with one that
continually listens for return signal
Triplex imaging - Answer Combination of b-mode, spectral and color Doppler
Tissue harmonic imaging - Answer Additional frequencies other than those sent into the body
that are used to create more high-res images
Spectral waveform - Answer provides time, velocity, frequency shift, flow direction and
amplitude if returning signal from within blood vessel
Correct Answers 2026.
Infrasound - Answer <2 Hz
Audible sound - Answer 2-20,000 Hz
Ultrasound - Answer >20,000 Hz
Diagnostic ultrasound - Answer between 2 and 15 MHz (or higher)
Acoustic windows (sonographic window) - Answer Optimal location on body for placement of
the transducer to demonstrate both normal anatomy and pathology
Radiologist - Answer One who interprets or reads imaging exams (cardiologists, vascular
surgeons and OBs may be the ones interpreting their respective scans)
Different types of imaging - Answer Radiography, fluoroscopy, myelography, arthrography, GI
imaging, computed tomography (CT), mammography, positron emission tomography (PET),
nuclear medicine technology, magnetic resonance imaging (MRI), magnetic resonance
angiogram (MRA)
IMAGE process - Answer Investigate history
Make hypothesis
Analyze with sonography
Gather findings
Evaluate for connections
Sono images - Answer Obtained in two scan planes- Sagittal and transverse
Sono reports - Answer Docs with basic info about sono exam; compare normal and abnormal
but do NOT use diagnostic terms (see basic sonographic descriptive language)
Anechoic - Answer Fluid filled structure, black on image
Echogenic - Answer Bright/gray structure, produces echoes
, Sonographic reasoning - Answer 1- clinical history
2-clinical hypothesis
3- investigative imagine
4- Sonographic findings (recall clinical history and hypothesis)
5- clinical correlation
Sound - Answer Form of energy produced when vibrating source causes molecules in medium
to move back and forth
Acoustics - Answer Scientific study of sound
A-mode - Answer Amplitude mode; represents depth of returning echo in x-axis and strength
of reflector on y-axis
Plus if sound sent out to create one scan line of info interpreted to represent depth and
amplitude
B-mode - Answer Brightness; displays returning ultrasound signal as dot on monitor
(grayscale)
Dot has varying degrees of brightness based on strength of returning echo
M-mode - Answer Motion; documents movement of structures in body along single scan live
Y-axis= depth, x-axis= time
Pulse wave Doppler - Answer the Doppler technique that uses pulses of sound to obtain
Doppler signals from a user-specified depth
Continuous Wave Doppler - Answer Combines element of continuous waves with one that
continually listens for return signal
Triplex imaging - Answer Combination of b-mode, spectral and color Doppler
Tissue harmonic imaging - Answer Additional frequencies other than those sent into the body
that are used to create more high-res images
Spectral waveform - Answer provides time, velocity, frequency shift, flow direction and
amplitude if returning signal from within blood vessel
