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NM 4303 PHYSICS AND INSTRUMENTATION CHRISTIAN 7 TH EDITION Chapter 2 Physics of Nuclear Medicine
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E = wavelength x frequency
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Describe: X & Gamma rays What are the similarities? What is the difference?
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Sub atomic particles protonneutronelectron Particle or energy?ppp symbolP +N O +/-e̵ mass1.00759 amu1.00898 amu1/1836 or.000549 amu charge+10 functionPhysical characteristics (N/P ratio)-Nuclear stability Chemical properties
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Neutron /proton ratio
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alpha, beta -/+, gamma decay
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Decay by: Alpha decay Beta Decay + & - ( pair annihilation radiation) Tc99m metastable & transmutation Electron capture Gamma emission
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ISOTOPES ISOTONES ISOBARS ISOMERS
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Decay schemes
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What is decay constant? Decay constant =.693/ half life
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1/t eff = 1/t b + 1/t p
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Brems x-ray production
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Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc. 17 Characteristic X-Ray Production
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Auger electron
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Define Electron Capture (EC) GAMMA EMISSION
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Half Value Layer
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Interation with Matter Five names for Simple scattering Thompson Raleigh Coherent Unmodified Simple
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Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc. 22 Simple Scatter
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Photoelectric
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Compton Scattering
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Pair Production
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Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc. 26 Pair Production
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End of chapter 2 Take exam one over chapters 1 & 2 (Section I in the NM 4303 module) (make sure you have turned in all of the module homework. ( CIRCLE YOUR ANSWERS)
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