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A Level Physics Practice Test: Medical Imaging
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Medical imaging is the process of using various technologies to view the human body for medical diagnosis, treatment, or monitoring. These technologies provide information about the body's tissues, organs, or the effectiveness of medical treatment. Medical imaging is used in many medical settings and at all levels of healthcare.  Some examples of medical imaging techniques include: X-ray Computed tomography (CT) Positron emission tomography (PET) Magnetic resonance imaging (MRI) Single-photon emission computed tomography (SPECT) Digital mammography Diagnostic... Show more
A Level Physics Practice Test: Medical Imaging
Time left 00:00
25 Questions

1. Acoustic impedance of human skin is
2. Acoustic impedance is defined as
3. Contrast media consist of elements with
4. If fast moving electrons rapidly decelerate, then rays produced are
5. Soft x-rays have
6. Change in speed of ultrasound causes
7. Attenuation coefficient of bone is 600 m-1 for x-rays of energy 20 keV and intensity of beam of x-rays is 20 Wm-2, then intensity of beam after passing through a bone of 4mm is
8. For protons, the gyromagnetic ratio has the value
9. Thickness of material which decreases intensity of x-ray material to half of original value is
10. Intensifier screens reduces the patient's exposure to x-rays by a factor of
11. Bones look white in x-ray photograph because
12. A good x-ray source should produce x-rays of narrow beam and
13. Fatty tissues have
14. X-rays have
15. In x-ray production, the kinetic energy of an electron arriving at anode is
16. As the x-rays pass through matter, it's intensity
17. speed of ultrasound depends upon
18. x-rays are filtered out of human body by using
19. A sound wave which has frequency higher than the upper limit of human hearing is
20. Larmor frequency depends upon the
21. Energy passing through unit area is
22. Intensity of x-rays can be increased by increasing
23. Maximum energy an x-ray photon can have is
24. Gradual decrease in x-ray beam intensity as it passes through material is called
25. Attenuation coefficient depends on

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