Radiologic Science for Technologists - Ch 1 Essential Concepts of Radiologic Science Questions and Answers

What is radiation? - The transfer of energy by electromagnetic waves Types of radiation? - ionizing and nonionizing What is non-ionizing radiation? - Low energy, longer wave lengths that do not have the capacity to ionize. Examples are ultraviolet, visible light, infrared, microwave What is ionizing radiation? - It is any electromagnetic or particulate radiation capable of producing ions either directly or indirectly as a result of interaction with matter. What are x-rays? - Electromagnetic radiation w/ extremely short wavelengths. When was x-ray discovered? - November 8, 1895 by Wilhelm Roentgen "rank-en" What was the first radiograph? - Anna Bertha Roentgen's hand (30 min. exposure) What do Radiologic Technologists do? - Diagnostic Exams: chest, extremities, skull/facial, spine, gastrointestinal, interventional AART - American Registry of Radiologic Technologists R.T. - Radiologic Technologist -Certification in Radiologic Technology C.R.T. - Certified Radiologic Technologist - State of CA, Dept. of Health - Radiologic Health Branch C.R.T.(R)(F)(M) - Radiography, Fluoroscopy, Mammography JRCERT - Joint Review Committee on Education in Radiologic Technology - for accredited schools TJC - The Joint Commission - establishes standards for hospitals/health related facilities ASRT - American Society of Radiologic Technologists - continuing education - high frequency sound waves - non-ionized - Diagnostic Medical Sonographers - "real time" images - 1960s - Ultrasound/Sonography - diagnostic procedure that includes scan images of a blood vessel after injection of a contrast medium - focuses on heart or peripheral - fluoroscopy - "real time" images - Angiography - uses ionized radiation to obtain cross-sectional or whole body images - detects bone and soft tissue damages - able to do 3D reconstruction - must have primary cert. in radiography, NM, or radiation therapy - 1970s - Computed Tomography (CT/CAT scans) - uses magnetic fields and radio waves to obtain cross-sectional or whole body images - non-ionized - 1980s - Magnetic Resonance Imaging (MRI)