'Linear attenuation coefficient' diaporamas de présentation

Resident Physics Lectures

Resident Physics Lectures. Christensen, Chapter 4 Basic Interactions Between X-Rays and Matter, Grid Attenuation and Filtration. George David Associate Professor Medical College of Georgia Department of Radiology. Photons atoms interations.

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Positron Emission Tomography

Positron Emission Tomography. Outline. PET Examples Imaging Goal Reconstruction/Data Requirements Method of Data Acquisition in PET Positron Decay/Annihilation Detectors/Scanner PET Tracers Data Acquisition Modes (2D/3D) Attenuation Degrading Effects Combined PET and CT.

1.17k views • 74 slides

Types of Radiation Interactions

Types of Radiation Interactions. Many Small. All or Nothing. The radiation interacts almost continuously giving up a small amount of its energy at each interaction. There is a finite probability per unit length that the radiation is absorbed. If not, there is no interaction. Incident Beam. N.

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X-Ray Physics

X-Ray Physics. Assumptions: Matter is composed of discrete particles (i.e. electrons, nucleus) Distance between particles >> particle size X-ray photons are small particles Interact with body in binomial process Pass through body with probability p

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What kinds of specimens?

What kinds of specimens?. Examples from literature Catalysts - mask large pores by filling w/ medium of same electron density as catalyst support (ex: CH 2 I 2 ) - expect increase in absorption Vycor glass - surface area of internal voids

300 views • 13 slides