Chapter 1 Flashcards
Define Radiation
Energy that is transmitted by waves through space or a medium (matter)
What are three types of energy used for diagnostic purposes?
Xrays
Sound
Nuclear Energy
What is ionization?
Any process by which neutral atom gains or loses an electron thus acquiring a net charge
How are x-rays created?
Manmade form of electromagnetic energy that is created when electrons move at a high rate of speed and suddenly stop
What form of energy is sound?
Mechanical
What is Nuclear energy?
Energy emitted by the nucleus of an atom
What type of radiation does nuclear medicine use?
Gamma radiation
Forms of non-ionizing radiation
Heat, Radio, TV, Radar, MRI Visible light, Infared
Forms of ionizing radiation
UV
Gamma Rays
Xrays
Cosmic Rays
Who discovered X-rays?
Wilhelm Conrad Roentgen
When were X-rays discovered?
November 8, 1895
Describe the experiment used when x-rays were discovered.
Experimenting with Cathode rays outside glass tube. Covered the glass tubes so no light could escape and noticed a screen across the room that was painted with Barium Platinocyanide was fluorescing
First published report on properties of X-rays was called:
“On a New Kind of Rays”
What is Cardiovascular Interventional Technology
Use contrast to image heart and blood vessels
What is Mammography?
Specialize in imaging of the breast
What is Nuclear Medicine?
Use radioactive materials for diagnostic and therapeutic purposes.
What is the radioactive material used in Nuclear Medicine?
Radiopharmaceutical
What are PET scans?
Sectional images that demonstrate physiological functions of organs
What is Radiation Therapy?
Administers radiation treatments - uses high does of ionizing radiation to treat malignant tumors
What are Medical Dosimetrists?
Determine treatement plan and dose calculations for radiation therapy
What is Bone Densitometry?
Uses DEXA scans which measures bone mineral density
What does DEXA stand for?
Dual-energy X-ray Absorptiometry
What is Computer Tomography?
Visualize patient anatomy in various planes using ionzing radiation.
What is Ultrasound?
Visualize structures of body by recording reflections of pulses of high frequency sound waves
