Ultrasound Physics (SPI) Review Exam
Questions And Answers
Meaning of Anechoic? -
correct answer ✅Dark, less echos.
Meaning of Echogenic? -
correct answer ✅Full of echoes.
Meaning of Hyperechoic? -
correct answer ✅More echoes than adjacent tissue.
Meaning of Hypoechoic? -
correct answer ✅Less Echoes than adjacent tissue.
Meaning of Isoechoic? -
correct answer ✅Similar/same echoes than adjacent tissue.
Meaning of Homogenous? -
correct answer ✅Uniform Texture. (smooth)
Meaning of Heterogenous? -
correct answer ✅Different levels of echogenicity.
,Ultrasound Physics (SPI) Review Exam
Questions And Answers
Definition of Wavelength? -
correct answer ✅The length of one cycle.
-Denoted by (Lamda)
Unit for Wavelength? -
correct answer ✅m, cm, mm
Definition of Propagation Speed? -
correct answer ✅The speed at which sound travels through a
medium
Unit for Propagation Speed? -
correct answer ✅m/s or mm/microseconds
Propagation Speed depends on? -
correct answer ✅Density, Stiffness.
Definition of Density? -
correct answer ✅Concentration of matter.
-Inversely related to prop speed.
,Ultrasound Physics (SPI) Review Exam
Questions And Answers
Definition of Stiffness aka "Bulk Modulus"? -
correct answer ✅The resistance of a medium to compression.
-Stiffness is directly proportional to speed.
What are the two types of Ultrasound Waves? -
correct answer ✅1.) Electromagnetic - Wave travels through a
vacuum.
2.) Mechanical - Wave must travel through a medium.
What are two kinds of Mechanical Waves? -
correct answer ✅A.) Transverse
B.) Longitudinal
Ultrasound images are made up of typically how many scan lines? -
correct answer ✅128 - 256 scan lines.
(more the better resolution)
Scanning format for Sector (shape)? -
correct answer ✅Pie Shaped, Scan lines originate from the same
location and spread out as they travel.
.
, Ultrasound Physics (SPI) Review Exam
Questions And Answers
/\
/\
Scanning format for Modified Sector? -
correct answer ✅Scan lines originate from different points, but
close together.
///\\\
/// \\\
Scanning format for Linear? -
correct answer ✅Scan lines originate from different points and
travel parallel to each other. |||||||
|||||||
Definition of PRF? -
correct answer ✅-Pulse Repetition Frequency
-The number of cycles per second. (including listening time)
Units for PRF? -
correct answer ✅Hz, kHz, MHz
Questions And Answers
Meaning of Anechoic? -
correct answer ✅Dark, less echos.
Meaning of Echogenic? -
correct answer ✅Full of echoes.
Meaning of Hyperechoic? -
correct answer ✅More echoes than adjacent tissue.
Meaning of Hypoechoic? -
correct answer ✅Less Echoes than adjacent tissue.
Meaning of Isoechoic? -
correct answer ✅Similar/same echoes than adjacent tissue.
Meaning of Homogenous? -
correct answer ✅Uniform Texture. (smooth)
Meaning of Heterogenous? -
correct answer ✅Different levels of echogenicity.
,Ultrasound Physics (SPI) Review Exam
Questions And Answers
Definition of Wavelength? -
correct answer ✅The length of one cycle.
-Denoted by (Lamda)
Unit for Wavelength? -
correct answer ✅m, cm, mm
Definition of Propagation Speed? -
correct answer ✅The speed at which sound travels through a
medium
Unit for Propagation Speed? -
correct answer ✅m/s or mm/microseconds
Propagation Speed depends on? -
correct answer ✅Density, Stiffness.
Definition of Density? -
correct answer ✅Concentration of matter.
-Inversely related to prop speed.
,Ultrasound Physics (SPI) Review Exam
Questions And Answers
Definition of Stiffness aka "Bulk Modulus"? -
correct answer ✅The resistance of a medium to compression.
-Stiffness is directly proportional to speed.
What are the two types of Ultrasound Waves? -
correct answer ✅1.) Electromagnetic - Wave travels through a
vacuum.
2.) Mechanical - Wave must travel through a medium.
What are two kinds of Mechanical Waves? -
correct answer ✅A.) Transverse
B.) Longitudinal
Ultrasound images are made up of typically how many scan lines? -
correct answer ✅128 - 256 scan lines.
(more the better resolution)
Scanning format for Sector (shape)? -
correct answer ✅Pie Shaped, Scan lines originate from the same
location and spread out as they travel.
.
, Ultrasound Physics (SPI) Review Exam
Questions And Answers
/\
/\
Scanning format for Modified Sector? -
correct answer ✅Scan lines originate from different points, but
close together.
///\\\
/// \\\
Scanning format for Linear? -
correct answer ✅Scan lines originate from different points and
travel parallel to each other. |||||||
|||||||
Definition of PRF? -
correct answer ✅-Pulse Repetition Frequency
-The number of cycles per second. (including listening time)
Units for PRF? -
correct answer ✅Hz, kHz, MHz
