Muclear Medicin Chapter 15 Flashcards

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1
Q

What are the three main techniques

A

Planar (gamma camera)
SPECT (single photon emission computed tomography)
PET (positron emission tomography )

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2
Q

Anatomical info
Physiologic info
Transmission images
Emission images

A
  1. Given by X-ray or CT
  2. Given by PET, SPECT, plan at gamma
  3. X-rays are transmitted and detected outside body-CT
  4. Radioactive subs injected into patient and energetic photons generated within the body
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3
Q

Isotopes
Isotones
Isobars

A

Same Z, varying N
Same N, varying Z
Same A, varying Z and N

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4
Q

Internal bremsstralung

A

Electron capture results in e cascade in atom =emission of characteristic X-rays

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5
Q

Radionuclide production

A
  1. Bombardment of stable elements with beams of charged particles
    - cyclotron:charged particle accelerator, perpendicular magnetic field confines path to circular motion
    - accelerator: accelerated beam of charged particles to linear path
  2. Irradiation of stable elements without neutrons in a nuclear reactor
  3. Generator production
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6
Q

Gamma camera

A

Collimator accepts orthogonal gamma event from patient

PMTs collecting signal

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7
Q

PET

A

Scintillator crystal arrays, photons interact with , create visible light, converts into electronic signal

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8
Q

Dose calibrator

A

Shielding ionizing chamber to measure radioactivity of different radioisotopes

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9
Q

Greiger counter

A

Detects presence of radiation through count rate

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