NM 4303 PHYSICS AND INSTRUMENTATION CHRISTIAN 7 TH EDITION Chapter 2 Physics of Nuclear Medicine.

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Presentation transcript:

NM 4303 PHYSICS AND INSTRUMENTATION CHRISTIAN 7 TH EDITION Chapter 2 Physics of Nuclear Medicine

E = wavelength x frequency

Describe: X & Gamma rays What are the similarities? What is the difference?

Sub atomic particles protonneutronelectron Particle or energy?ppp symbolP +N O +/-e̵ mass amu amu1/1836 or amu charge+10 functionPhysical characteristics (N/P ratio)-Nuclear stability Chemical properties

Neutron /proton ratio

alpha, beta -/+, gamma decay

Decay by: Alpha decay Beta Decay + & - ( pair annihilation radiation) Tc99m metastable & transmutation Electron capture Gamma emission

ISOTOPES ISOTONES ISOBARS ISOMERS

Decay schemes

What is decay constant? Decay constant =.693/ half life

1/t eff = 1/t b + 1/t p

Brems x-ray production

Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc. 17 Characteristic X-Ray Production

Auger electron

Define Electron Capture (EC) GAMMA EMISSION

Half Value Layer

Interation with Matter Five names for Simple scattering Thompson Raleigh Coherent Unmodified Simple

Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc. 22 Simple Scatter

Photoelectric

Compton Scattering

Pair Production

Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc. 26 Pair Production

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)