RADT 142 unit 1 Exam | Questions And Answers Latest {2024- 2025} A+ Graded | 100%
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Radiation - Transfer of energy, through space or a material, away from the source.
Non-ionizing radiation - Type of radiation that is weak and non-harmful such as radio or microwave
radiation.
Ionizing radiation - Type of radiation that is harmful such as x-rays and gamma rays.
Electromagnetic radiation with extremely short wavelengths. They can pass through many materials. -
What are x-rays?
November 8, 1895 - Date of the discovery of x-rays.
Crookes tube - Large partially vacuumed glass tube, through which cathode rays were conducted.
Roentgen used a type of this tube, which he enclosed with black photographic paper, to discover x-rays.
Barium Platinocyanide - A fluorescent material that happened to be on a plate lying several meters away
from where Roentgen was experimenting with his Crookes tube. The material began to glow when
cathode rays where conducted through the tube.
First radiograph - Anna Bertha Roentgen's hand that was exposed for 30 minutes.
Poly energetic - Properties of x-rays: 1
Highly penetrating - Properties of x-rays: 2
Invisible - Properties of x-rays: 3
, Ionize atoms - Properties of x-rays: 4
Cause chemical and biological changes - Properties of x-rays: 5
Travel in straight lines - Properties of x-rays: 6
Produce scatter and secondary radiation - Properties of x-rays: 7
Cannot be focused by a lens - Properties of x-rays: 8
Chest - most common - Types of diagnostic x-ray exams: 1
Extremities - Types of diagnostic x-ray exams: 2
Skull/facial - Types of diagnostic x-ray exams: 3
Spine - Types of diagnostic x-ray exams: 4
Gastrointestinal - Types of diagnostic x-ray exams: 5
Interventional - Types of diagnostic x-ray exams: 6
ARRT - American Registry of Radiologic Technology. National accredited body that tests and certifies
technologists after completion of a radiology program.
CRT - The Radiologic Health Branch Of the California State, Department of Health. Examines
technologists for licensing to practice in California. This test is taken after passing the ARRT examination.
JRCERT - Joint Review Committee on Education in Radiologic Technology. Ensures that the radiology
programs provided by schools are accredited
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