Science Quiz / A2 Physics: Medical Imaging

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Can you name the A2 Physics: Medical Imaging?

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QuestionAnswer
Pair Production: X-ray photons required energy level:
Pair Production: occurs when
Which physical process is used to produce ultrasound?
Gamma Camera: What is behind the crystal of sodium iodide?
If two materials have a large difference in acoustic impedance....
Acoustic impedance, Z =
Gamma Camera: What does the block of lead with tens of thousands of vertical holes do ?
For X-rays to be produced, electrons must be accelerated from
Disadvantages of MRI 3:
Technetium-99 has a half-life of
At low frequencies, X-rays are mostly absorbed by
What does CAT scan stand for?
X-rays are best produced when...
To increase the image quality of an X-ray, one could use...
Compton: Any X-ray photon deflected through a small angle will...
How is the piezoelectric effect induced?
How is an MRI scanner's magnet kept cool?
To increase the image quality of an X-ray, one could use...
Intensity, I, of X-rays through medium =
X-rays have wavelengths between...
What is used to solve the problem of air between the body and the transducer?
Intensity of X-rays: mu =
Advantages of MRI 3:
Advantages of MRI 2:
What does MRI stand for?
Disadvantages of MRI 1:
An MRI scanner is composed of a huge superconducting magnet creating a uniform magnetic field in the order of...
Disadvantages of MRI 4:
Disadvantages of MRI 2:
QuestionAnswer
Compton: Any X-ray photon deflected through a small angle will...
What does PET scan stand for?
At high frequencies, X-rays are mostly absorbed by
MRI signals of electromagnetic energy are emitted when
Technetium-99 decays from excited to ground state with the emission of
Gamma Camera: What thickness is the crystal of sodium iodide?
Gamma Camera: What does the crystal of sodium iodide do?
Larmor frequency, f =
Example of a crystal used to produce ultrasound
Emitted photoelectrons, when produced by X-rays, have...
What is the pulse repetition frequency?
What will reflect ultrasound?
X-rays are best produced when...
Ultrasound are sound waves with frequencies greater than...
Gamma Camera: What diameter has the crystal of sodium iodide?
Intensity of X-rays is defined as...
Advantages of MRI 1:
Why do proton relaxation times differ in different tissue types
When radio waves at the Larmor frequency are applied to hydrogen protons...
Which radioactive nuclide is commonly used as a medical tracer
Compton: Any X-ray photon deflected through a large angle will...
If two materials have the same acoustic impedance...
What are Ultrasound A-scans for?
Compton: Found in X-ray spectrometer...
At medium frequencies, X-rays are mostly absorbed by
PET: What happens when a positron and an electron collide and are annihilated?
Compton: Any X-ray photon deflected through a large angle will...
What is the use of a coupling medium in ultrasound called

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