Exam (elaborations) Understanding Ultrasound Physics Chapter 15 Exam Questions with Correct Answers Exam (elaborations) Understanding ultrasound physics chapter 18 HEMODYNAMICS Exam Questions and Answers Exam (elaborations) Understanding Ultrasound Physics Chapter 8 Exam Questions and Answers ...
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How are the size of a tree and its age related? A. inversely B. directly C. unrelated - ANSWER-B.) Directly. Generally as a tree ages, it's size increases. How are the height of a person and the color of his car related? A. inversely B. directly C. unrelated - ANSWER-C. Unrelated. Generall...
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Add to cartHow are the size of a tree and its age related? A. inversely B. directly C. unrelated - ANSWER-B.) Directly. Generally as a tree ages, it's size increases. How are the height of a person and the color of his car related? A. inversely B. directly C. unrelated - ANSWER-C. Unrelated. Generall...
Quality Assurance - ANSWER-The routine periodic evaluation of an ultrasound system to guarantee optimal mage quality. Requirements of a quality assurance program: - ANSWER-1) assessment of system components 2) repairs 3) preventive maintenance 4) record keeping Goals of a quality assuranc...
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Add to cartQuality Assurance - ANSWER-The routine periodic evaluation of an ultrasound system to guarantee optimal mage quality. Requirements of a quality assurance program: - ANSWER-1) assessment of system components 2) repairs 3) preventive maintenance 4) record keeping Goals of a quality assuranc...
What is the vertical axis of a graph called? a. z-axis b. x-axis c. y-axis d. time-axis - ANSWER-c. y-axis What is the name of the horizontal axis of a graph? a. z-axis b. x-axis c. y-axis d. red axis - ANSWER-b. x-axis How are scores on the ultrasound board exams related to study time...
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Add to cartWhat is the vertical axis of a graph called? a. z-axis b. x-axis c. y-axis d. time-axis - ANSWER-c. y-axis What is the name of the horizontal axis of a graph? a. z-axis b. x-axis c. y-axis d. red axis - ANSWER-b. x-axis How are scores on the ultrasound board exams related to study time...
What is the vertical axis of a graph called? a. z-axis b. x-axis c. y-axis d. time-axis - ANSWER-y-axis What is the name of the horizontal axis of a graph? a. z-axis b. x-axis c. y-axis d. red axis - ANSWER-x-axis How are scores on the ultrasound board exams related to study tim...
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Add to cartWhat is the vertical axis of a graph called? a. z-axis b. x-axis c. y-axis d. time-axis - ANSWER-y-axis What is the name of the horizontal axis of a graph? a. z-axis b. x-axis c. y-axis d. red axis - ANSWER-x-axis How are scores on the ultrasound board exams related to study tim...
50. What is the range of periods commonly found in waves produced by ultrasound systems? A. 0.001 to 1s B. 0.06 to 0.5 us C. 0.2 to 1 ms D. 10 to 100 ns - ANSWER-B. Ultrasonic imaging waves have a period in ps. The period is the range of 0.06 to 0.5 the time of a single cycle. Period is the ...
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Add to cart50. What is the range of periods commonly found in waves produced by ultrasound systems? A. 0.001 to 1s B. 0.06 to 0.5 us C. 0.2 to 1 ms D. 10 to 100 ns - ANSWER-B. Ultrasonic imaging waves have a period in ps. The period is the range of 0.06 to 0.5 the time of a single cycle. Period is the ...
Parameters - ANSWER-Describe features of sound wave. Period - ANSWER-The time it takes a wave to vibrate a single cycle; or the start of 1 cycle to the next. Period is reported in units of time ____________ - ANSWER-microseconds The typical value of a period in diagnostic ultrasound is ____...
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Add to cartParameters - ANSWER-Describe features of sound wave. Period - ANSWER-The time it takes a wave to vibrate a single cycle; or the start of 1 cycle to the next. Period is reported in units of time ____________ - ANSWER-microseconds The typical value of a period in diagnostic ultrasound is ____...
acoustic variables - ANSWER-pressure, density, distance sound waves are identified by - ANSWER-oscillations in acoustic variables parameters - ANSWER-describe features of a sound wave power vs amplitude - ANSWER-power= amplitude^2 intensity vs amplitude - ANSWER-intensity= amplitude^2 ...
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Add to cartacoustic variables - ANSWER-pressure, density, distance sound waves are identified by - ANSWER-oscillations in acoustic variables parameters - ANSWER-describe features of a sound wave power vs amplitude - ANSWER-power= amplitude^2 intensity vs amplitude - ANSWER-intensity= amplitude^2 ...
acoustic variables - ANSWER-pressure, density, distance sound waves are identified by - ANSWER-oscillations in acoustic variables parameters - ANSWER-describe features of a sound wave power vs amplitude - ANSWER-power= amplitude^2 intensity vs amplitude - ANSWER-intensity= amplitude^2 ...
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Add to cartacoustic variables - ANSWER-pressure, density, distance sound waves are identified by - ANSWER-oscillations in acoustic variables parameters - ANSWER-describe features of a sound wave power vs amplitude - ANSWER-power= amplitude^2 intensity vs amplitude - ANSWER-intensity= amplitude^2 ...
What does method of Dynamic Range describe? We can think of it as the number of ______ ______. - ANSWER-The extent to which a signal can vary and still be processed accurately. number of AVAILABLE CHOICES ______ signals are below the systems threshold. - ANSWER-WEAK What controls on the syste...
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Add to cartWhat does method of Dynamic Range describe? We can think of it as the number of ______ ______. - ANSWER-The extent to which a signal can vary and still be processed accurately. number of AVAILABLE CHOICES ______ signals are below the systems threshold. - ANSWER-WEAK What controls on the syste...
Non-directional Doppler/ Non Coherent/ Hand held Doppler - ANSWER-a basic doppler system that simply measures movement, by the presence of a frequency shift (can ONLY detect that) Bi-directional Doppler - ANSWER-uses phase quadrature to distinguish flow direction with a special set of headphones ...
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Add to cartNon-directional Doppler/ Non Coherent/ Hand held Doppler - ANSWER-a basic doppler system that simply measures movement, by the presence of a frequency shift (can ONLY detect that) Bi-directional Doppler - ANSWER-uses phase quadrature to distinguish flow direction with a special set of headphones ...
What is bioeffects? - ANSWER-effects that ultrasound causes on biological tissue Why is it important to know the output of ultrasound systems? - ANSWER-since the majority of sound energy entering the body remains there Who are generally uses the instruments dealing with bioeffects? - ANSWER-sc...
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Add to cartWhat is bioeffects? - ANSWER-effects that ultrasound causes on biological tissue Why is it important to know the output of ultrasound systems? - ANSWER-since the majority of sound energy entering the body remains there Who are generally uses the instruments dealing with bioeffects? - ANSWER-sc...
What are the 4 commonly accepted principles of health care ethics? - ANSWER-respect for autonomy, nonmaleficence, beneficence, and justice What means that the patient has the capacity to act intentionally, with understanding, and with free will? - ANSWER-respect for autonomy What is respect fo...
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Add to cartWhat are the 4 commonly accepted principles of health care ethics? - ANSWER-respect for autonomy, nonmaleficence, beneficence, and justice What means that the patient has the capacity to act intentionally, with understanding, and with free will? - ANSWER-respect for autonomy What is respect fo...
What is the routine, periodic evaluation of an ultrasound system to guarantee optimal image quality? - ANSWER-quality assurance How often must quality assurance evaluations be performed? - ANSWER-periodically and routinely Quality assurance is a ________ and __________ necessity for every labo...
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Add to cartWhat is the routine, periodic evaluation of an ultrasound system to guarantee optimal image quality? - ANSWER-quality assurance How often must quality assurance evaluations be performed? - ANSWER-periodically and routinely Quality assurance is a ________ and __________ necessity for every labo...
What is essentially an error in imaging? - ANSWER-artifact Artifacts include reflections that are described as: - ANSWER-not real, not seen on the image, incorrect shape or size, incorrect position, and incorrect brightness What are artifacts a result from? - ANSWER-violation of assumptions, e...
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Add to cartWhat is essentially an error in imaging? - ANSWER-artifact Artifacts include reflections that are described as: - ANSWER-not real, not seen on the image, incorrect shape or size, incorrect position, and incorrect brightness What are artifacts a result from? - ANSWER-violation of assumptions, e...
What is a method of reporting the extent to which a signal can vary and still be accurately measured? - ANSWER-dynamic range What are the reported units for dynamic range? - ANSWER-decibels Is dynamic range a comparison, relative measurement, or a ratio? - ANSWER-yes Threshold - ANSWER-weak...
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Add to cartWhat is a method of reporting the extent to which a signal can vary and still be accurately measured? - ANSWER-dynamic range What are the reported units for dynamic range? - ANSWER-decibels Is dynamic range a comparison, relative measurement, or a ratio? - ANSWER-yes Threshold - ANSWER-weak...
Mechanical Transducer - ANSWER-- Disc shaped - One active element - Fan or sector shaped - Crystal moves with motor - Steered mechanically - Fixed focusing - No image when PZT is damaged What is the channel a combination of? - ANSWER-Combination of the active element, wire, and system elec...
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Add to cartMechanical Transducer - ANSWER-- Disc shaped - One active element - Fan or sector shaped - Crystal moves with motor - Steered mechanically - Fixed focusing - No image when PZT is damaged What is the channel a combination of? - ANSWER-Combination of the active element, wire, and system elec...
Axial Resolution - ANSWER-Measures the ability of a system to display two structures that are very close together when the structures are PARALLEL to the sound beam's main axis. Resolution - ANSWER-The ability to create accurate images Axial Resolution - ANSWER-What answers the question, what...
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Add to cartAxial Resolution - ANSWER-Measures the ability of a system to display two structures that are very close together when the structures are PARALLEL to the sound beam's main axis. Resolution - ANSWER-The ability to create accurate images Axial Resolution - ANSWER-What answers the question, what...
Five terms describe the shape and regions of a sound beam: - ANSWER-1. focus 2. near zone length zone or near zone length 4. far zone 5. focal zone focal point - ANSWER-The location where the beam is the narrowest Near Zone (Fresnel Zone) - ANSWER-the region or zone in between the transdu...
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Add to cartFive terms describe the shape and regions of a sound beam: - ANSWER-1. focus 2. near zone length zone or near zone length 4. far zone 5. focal zone focal point - ANSWER-The location where the beam is the narrowest Near Zone (Fresnel Zone) - ANSWER-the region or zone in between the transdu...
_____________ Is the ability to create accurate images. - ANSWER-Resolution T/F Axial Res. is the ability to distinctly identify 2 structures that are very close together side by side. - ANSWER-False _______________________ measures the ability of a system to display 2 structures that are ve...
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Add to cart_____________ Is the ability to create accurate images. - ANSWER-Resolution T/F Axial Res. is the ability to distinctly identify 2 structures that are very close together side by side. - ANSWER-False _______________________ measures the ability of a system to display 2 structures that are ve...
parameters that describe both pulsed and continuous waves (pg. 64) - ANSWER-Period, Wavelength, Frequency, Propagation Speed for pulsed wave, these parameters are all determined by the source/ system a. SPL, PD, PRP, DF b. PD, PRP, PRF, DF - ANSWER-b. PD, PRP, PRF, DF which parameters...
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Add to cartparameters that describe both pulsed and continuous waves (pg. 64) - ANSWER-Period, Wavelength, Frequency, Propagation Speed for pulsed wave, these parameters are all determined by the source/ system a. SPL, PD, PRP, DF b. PD, PRP, PRF, DF - ANSWER-b. PD, PRP, PRF, DF which parameters...
sound waves weaken, or ________, as they travel through the body. - ANSWER-attenuate amplified - ANSWER-strengthened deibel notation - ANSWER-standard measurement tool used to report the strength of the wave A number that represents the number of 10s that are multiplied to create the origin...
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Add to cartsound waves weaken, or ________, as they travel through the body. - ANSWER-attenuate amplified - ANSWER-strengthened deibel notation - ANSWER-standard measurement tool used to report the strength of the wave A number that represents the number of 10s that are multiplied to create the origin...
Go-Return Time or Time-of-Flight - ANSWER-The elapsed TIME from pulse CREATION to pulse RECEPTION Relationship between TIME-OF-FLIGHT and DEPTH (distance) - ANSWER-DIRECTLY RELATED: As depth increases the time it takes from when that pulse is created to when that pulse is received, increases ...
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Add to cartGo-Return Time or Time-of-Flight - ANSWER-The elapsed TIME from pulse CREATION to pulse RECEPTION Relationship between TIME-OF-FLIGHT and DEPTH (distance) - ANSWER-DIRECTLY RELATED: As depth increases the time it takes from when that pulse is created to when that pulse is received, increases ...
Which imaging modality places time of flight information on the X axis and echo amplitude on the Y axis? A. M mode B. L mode C. J mode D. A mode - ANSWER-D. A mode A mode, or amplitude mode, displays reflector depth on the X axis. Reflector depth is determined by a pulses time of flight. Th...
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Add to cartWhich imaging modality places time of flight information on the X axis and echo amplitude on the Y axis? A. M mode B. L mode C. J mode D. A mode - ANSWER-D. A mode A mode, or amplitude mode, displays reflector depth on the X axis. Reflector depth is determined by a pulses time of flight. Th...
A video display that is limited to black and white only, with no shades of Gray, is called _______. A. binary B. bistable C. monochrome D. inchworm - ANSWER-B. bistable A video display with the ability to show black and white only, without any intermediate shades of Gray, is called bistable...
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Add to cartA video display that is limited to black and white only, with no shades of Gray, is called _______. A. binary B. bistable C. monochrome D. inchworm - ANSWER-B. bistable A video display with the ability to show black and white only, without any intermediate shades of Gray, is called bistable...
What is the ability of the system to create numerous frames each second? - ANSWER-Frame rate How is frame rate determined? - ANSWER-Sounds speed in the medium, depth of imaging What unit is frame rate measured in? - ANSWER-Hertz What does "accuracy in time" (the ability to precisely posit...
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Add to cartWhat is the ability of the system to create numerous frames each second? - ANSWER-Frame rate How is frame rate determined? - ANSWER-Sounds speed in the medium, depth of imaging What unit is frame rate measured in? - ANSWER-Hertz What does "accuracy in time" (the ability to precisely posit...
Contrast - ANSWER-Determines the range of brilliance in an image Brightness - ANSWER-Determines the brilliance of an image Scan Converter - ANSWER-converts/translates the information from spoke (fan shaped) format to video format (horizontal lines) Analog Numbers - ANSWER-* Real world * Un...
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Add to cartContrast - ANSWER-Determines the range of brilliance in an image Brightness - ANSWER-Determines the brilliance of an image Scan Converter - ANSWER-converts/translates the information from spoke (fan shaped) format to video format (horizontal lines) Analog Numbers - ANSWER-* Real world * Un...
Directly related means - ANSWER-When one item increases or decreases, the second item, responds the same direction Two quantities are directly proportional if an increase in one quality leads to a/an ___________ in the other. - ANSWER-Increase Proportionally related means - ANSWER-Two items ar...
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Add to cartDirectly related means - ANSWER-When one item increases or decreases, the second item, responds the same direction Two quantities are directly proportional if an increase in one quality leads to a/an ___________ in the other. - ANSWER-Increase Proportionally related means - ANSWER-Two items ar...
harmonic frequency? - ANSWER-twice the fundamental frequency (second harmonic frequency) fundamental frequency? - ANSWER-the frequency of sound created by the transducer and transmitted into the body. transducer transmits a sound pulse with a frequency of 2 MHz.. what about in harmonic mode? -...
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Add to cartharmonic frequency? - ANSWER-twice the fundamental frequency (second harmonic frequency) fundamental frequency? - ANSWER-the frequency of sound created by the transducer and transmitted into the body. transducer transmits a sound pulse with a frequency of 2 MHz.. what about in harmonic mode? -...
What are the 6 major components of the ultrasound system? - ANSWER--Transducer -Pulser and beam former -Receiver -Display -Storage -Master synchronizer What do the Pulser and Beam former do? - ANSWER-Create and control the electrical signals sent to the transducer to generate sound pulses ...
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Add to cartWhat are the 6 major components of the ultrasound system? - ANSWER--Transducer -Pulser and beam former -Receiver -Display -Storage -Master synchronizer What do the Pulser and Beam former do? - ANSWER-Create and control the electrical signals sent to the transducer to generate sound pulses ...
Two items that are not associated. - ANSWER-Unrelated Two items that are associated or affiliated (the relationship between the items does not have to be specified). - ANSWER-Related, or proportional Two items that are associated such that when one item increases, the other increases. - ANSWER...
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Add to cartTwo items that are not associated. - ANSWER-Unrelated Two items that are associated or affiliated (the relationship between the items does not have to be specified). - ANSWER-Related, or proportional Two items that are associated such that when one item increases, the other increases. - ANSWER...
What does Acoustic propagation properties mean? - ANSWER-Effect of the medium upon the wave What does Biologic effect mean? - ANSWER-effect of wave upon the biologic tissue How does sound travel? - ANSWER-in a straight line Sound waves are _______ and ________ waves - ANSWER-Mechanical and ...
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Add to cartWhat does Acoustic propagation properties mean? - ANSWER-Effect of the medium upon the wave What does Biologic effect mean? - ANSWER-effect of wave upon the biologic tissue How does sound travel? - ANSWER-in a straight line Sound waves are _______ and ________ waves - ANSWER-Mechanical and ...
Parameters - ANSWER-describe features of a sound wave What are the 7 parameters? - ANSWER-period, frequency, amplitude, power, intensity, wavelength, speed What is the source of a sound wave? - ANSWER-ultrasound system and transducer What is the tissue through which the sound can travel cal...
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Add to cartParameters - ANSWER-describe features of a sound wave What are the 7 parameters? - ANSWER-period, frequency, amplitude, power, intensity, wavelength, speed What is the source of a sound wave? - ANSWER-ultrasound system and transducer What is the tissue through which the sound can travel cal...
What are the 5 parameters that describe pulse waves? - ANSWER-Pulse duration, PRP, PRF, duty factor and spatial pulse length Can a continuous wave create an image? - ANSWER-No Can a pulse wave create an image? - ANSWER-Yes What is a pulse wave? - ANSWER-Collection of cycles that travel toge...
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Add to cartWhat are the 5 parameters that describe pulse waves? - ANSWER-Pulse duration, PRP, PRF, duty factor and spatial pulse length Can a continuous wave create an image? - ANSWER-No Can a pulse wave create an image? - ANSWER-Yes What is a pulse wave? - ANSWER-Collection of cycles that travel toge...
What is defined as a beam's power divided by its area? - ANSWER-intensity What words are related to the intensities of pulsed waves? - ANSWER-spatial, peak, average, temporal, pulsed Spatial - ANSWER-refers to distance or space Peak - ANSWER-maximum value Average - ANSWER-mathematical m...
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Add to cartWhat is defined as a beam's power divided by its area? - ANSWER-intensity What words are related to the intensities of pulsed waves? - ANSWER-spatial, peak, average, temporal, pulsed Spatial - ANSWER-refers to distance or space Peak - ANSWER-maximum value Average - ANSWER-mathematical m...
Transmission - ANSWER-Electrical energy from the system is converted into sound Reception - ANSWER-The reflected sound pulse is converted into electricity Piezoelectric Effect - ANSWER-The property of certain materials to create a voltage when they mechanically deformed or when pressure is app...
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Add to cartTransmission - ANSWER-Electrical energy from the system is converted into sound Reception - ANSWER-The reflected sound pulse is converted into electricity Piezoelectric Effect - ANSWER-The property of certain materials to create a voltage when they mechanically deformed or when pressure is app...
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