PPT-Lecture 12 Imaging with gamma rays

Dr Sarah Bohndiek Learning outcomes After this lecture you should be able to Understand the necessary data processing and corrections performed in planar scintigraphy and positron emission tomography. Background Image courtesy of Dr. Bill Moore, Dept. of Radiology, Stony Brook Hospital. http://www.colin-studholme.net/research/ipag/mrdspect/mrspect3.html. http://www.mwit.ac.th/~Physicslab/applet_04/atom2/Alphae.gif. Learning Objectives. I must be able to recall when ionising radiation is emitted. . I should be able to describe the three types of ionising radiation.. I might be able to explain the dangers of ionising radiation.. Manel. Martinez. 4. 3. rd. . Winter Meeting. March 2015-Benasque. Outline. 1) Introduction. 2) Basics on VHE Gamma Astronomy physics. 3) VHE gamma observatories. 4) CTA. 5. ) Conclusions. 1) INTRODUCTION. High Energy & Cosmic Ray Research Ctr.. North Bengal University. TeV Neutrinos and Gamma rays from Pulsars/Magnetars. Introduction. The energy spectrum of cosmic rays extends to extremely high energies, values exceeding 10. Wavelength the size of an atom. Frequencies above UV. Uses of X-rays. Used in airports to examine luggage for the presence of dangerous weapons or bombs or for illegal transit of goods. . used to detect structural deficits or cracks in metal objects such as bridges and aircraft that are likely to be missed by the human eye. H. . Herrmann (LANL. ). e. -. Next . Steps. Cherenkov detectors . Energy . thresholded. Gas limited to >2.5 . MeV. Solid limited to <~0.2 . MeV. Aerogel. might span the gap. Real . g. -ray spectroscopy (Energy resolved) . Enzo . PARADISO. EDUSAFE Final Review. 20 June 2016. Overview. Gamma camera prototype recap. Panoramic gamma Imaging. Gamma sensor calibration. 3-D Gamma imaging. Overview - . 20 June . 2016 . – p. . 1 - ray Imaging Ethan Hull, Matthew Kiser PHDS Corporation, 3011 Amherst Road, Knoxville, TN 37921, USA Historically, radioactive material detection and localization have been accomplished through th reasons First if ions are formed in livingtissue such as the human body they canelectrical charge they are easy to detect Thismakes it possible to measure the amount ofradiation present even at extrem 12/11/20. | . 1. Gamma-rays are ideal probes of a subset of the radioactive isotopes produced in astrophysical transients.. A number of new gamma-ray missions are being developed (ASCENT, COSI, LOX, AMEGO, …) that will improve sensitivities by over an order of magnitude, allowing us to probe more transients and a broader range of isotopes*.. Liz Hays . (. NASA Goddard Space Flight Center). The Origin of Cosmic Rays. Credit S. . Swordy. Victor Hess and his . “Flight . Ops . Team”, . 1912. From protons. Pion decay. Accelerated protons (p) interact with matter. Photosensor applications . Medical imaging: scintillation detectors for . TOF-PET . Medical Imaging: . X-rays. radiography. Computed Tomography. analog picture is impressed on the film. digital data acquired, slices are computed . Vikram . Dwarkadas. . (U Chicago). Matthieu. Renaud, . Alexandre. . Marcowith. . (LUPM, U Montpellier). Vincent . Tatischeff. . (. Univ. Paris-. Sud. ). August 11 2017. TevPA 2017 : VVD. 1. We acknowledge support from the FACCTS program at . Schedule Notes. Program web page: . https://confluence.slac.stanford.edu/x/No-cDg. Hashtag #. FermiSchool. . Let’s Begin!. Intro to the Fermi Summer School. Liz Hays. NASA GSFC. May 28, 2019. What makes gamma-ray observations distinctive?.