Ultrasound Physics Lecture 14 Questions and answers
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Course
Sonography
Institution
Sonography
Two principles of operations:
- Principle 1 of operations
- Principle 2 of operations
Principle 1 of operations:
-The ultrasound machine operates and presents the information on the monitor.
-There is a one-to-one correspondence between transmitting a pulse into the body and the echoes r...
Ultrasound Physics
Lecture 14 Questions
and answers
Two principles of operations: - answer - Principle 1 of operations
- Principle 2 of operations
Principle 1 of operations: - answer -The ultrasound machine
operates and presents the information on the monitor.
-There is a one-to-one correspondence between transmitting a pulse
into the body and the echoes returning from that pulse and
presenting it as a visible dot developing a scan line (one pulse at a
time).
Principle 1 of Operation: Repeating this ___________ times, would
produce a single image of ultrasound. - answer 100-250
Principle 1 of Operation: This is _________ _________ _________ which is
coupled with displayed scan lines. - answer physical beam forming
Principle 1 of Operation: There is a ________ ___________ associated
with this serial line-by-line approach which will limit various
characteristics of the image. - answer time constraint
Principle 1 of Operation: Improving detail resolution by using
multiple transmission focuses would _____________ temporal
resolution. - answer degrade
, Principle 2 of Operation: - answer Many pulses are sent out at the
same time and all the echoes are received at the same time.
Principle 2 of Operation: The information is stored, and then from all
of that stored information the machine
_____________________________________. - answer calculates virtual scan
lines
Principle 2 of Operation: Finally, it will write the _______ ________
________ on the display monitor. - answer virtual scan lines
Advantages of Principle 2 operation: _________ pulses are required. -
answer Fewer
Advantages of Principle 2 operation: Transmission ____________ of the
sound beam is _____ _______________ as the entire image (called
dynamic focusing) is in focus. - answer - focusing
- not necessary
Advantages of Principle 2 operation: Has excellent ________
________________ throughout because focusing is occurring at each
pixel location, and not just at the focus (as in the case with principle
1). - answer detail resolution
Advantages of Principle 2 operation: Because there are fewer pulses
required to create the image the frame rates are going to be a _____
____________ (therefore the temporal resolution is
going to be ___________ as well). - answer - lot higher
- higher
Principle 2 Instruments: - answer The information flow or steps in
principle 2 image formation include:
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