Week 1a Chapter 01 Concepts of Radiation & Chapter 2 Units

Week 1a Chapter 01 Concepts of Radiation & Chapter 2 Units

Info iconThis preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon
LC232 X-ray Physics & Principles Russell L. Wilson C.R.T.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Week 1a Chapter 1 Concepts of Radiologic Science
Background image of page 2
Our Surroundings Everything in the universe can be classified as matter or energy . Matter is anything that occupies space and has a shape or form. Matter has Mass. This is the quantity of matter.The physical properties can be transformed in size, shape and form.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Energy Energy is the ability to do work. Energy can exist in many forms. Potential Energy is the ability to do work by virtue of position. Kinetic energy is the energy of motion. It is possessed by all matter in motion.
Background image of page 4
Energy Chemical Energy is the energy released by way of a chemical reaction. Electrical Energy represents the work that can be done when an electron or an electronic charge moves through an electronic potential.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Energy Thermal (heat) Energy is the energy of motion at the atom or molecule level. Thermal energy is measured by temperature. The faster the atoms or molecule are moving, the more thermal energy or heat will be produced.
Background image of page 6
Energy Nuclear Energy is the energy contained in the nucleus of the atom. Electromagnetic Energy is the most important type of energy for radiology.It is the type of energy in an x-ray. In addition to x-ray, electromagnetic energy includes radio waves, microwaves and visible light.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Energy Like matter, energy can be transformed from one type to another. Then taking an x-ray, we start with electrical energy that is transformed to electromagnetic energy. After the x-ray passes through matter, it is converted to chemical energy in the film.
Background image of page 8
Mass-Energy Equivalence Frequently matter and energy exist side by side. The interchangeability was theorized by Albert Einstein’s E=mc 2 . The Mass-Energy Equivalence is the basis of nuclear power, nuclear medicine and the atom bomb.
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Radiation Energy emitted and transferred through matter is called Radiation. Like ripples or waves are generated when a stone is dropped into a still pond. Visible light is a form of electromagnetic energy radiated from the sun.
Background image of page 10
Radiation Electromagnetic radiation is referred to as just radiation. Matter that intercepts radiation and absorbs part or all of it is said to be exposed or irradiated. During radiography, the patient is irradiated.
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Ionizing Radiation Ionizing radiation is a special type of radiation that includes x-rays. It is any kind of radiation capable of removing an orbital electron from an atom with which it interacts.
Background image of page 12
Ionizing Radiation Ionizing radiation passes close enough the the atom with sufficient energy to remove an electron from the atom. The free orbiting electron and atom become Ion Pairs.
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Ionizing Radiation X-ray and Gamma Rays are the only forms of electromagnetic energy with sufficient energy to ionize matter.
Background image of page 14
Radiation. Alpha and Beta
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 16
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 83

Week 1a Chapter 01 Concepts of Radiation & Chapter 2 Units

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online