Introduction to Radiologic and Imaging Sciences and Patient Care: Introduction to Imaging and Radiologic Sciences Flashcards
Medical radiation sciences uses ----- to create images of the human body.
energy
Radiation
Energy that is transmitted by waves through space or through a medium (matter).
Energy
the capacity to do work
Ionization
Process by which a neutral atom gains or loses an electron, thus gaining a net charge.
Medical Radiation Sciences
Uses energy to create images of the human body. Various energy forms may be used and some energies create ionizations in human tissue
What are the energy forms for imaging?
Electromagnetic -X-rays (ionizing) -Radio waves Sound -Medical sonography Electrical -Electrocardiography Heat (thermal) -Thermography Magnetic -Magnetic resonance imaging Nuclear -Gamma radiation
How are x-rays created?
X-rays are created when high-speed electrons are slowed or suddenly stopped.
Radiography
Uses electromagnetic energy in the form of x-rays to create medical images.
Medical Sonography
Field study that creates images by recording reflected sound waves. It is non-ionizing and has a wide variety of medical applications.
Non-ionizing radiation
Radiation that has enough energy to move atoms in a molecule around or cause them to vibrate, but not enough to remove electrons
Magnetic Resonance Imaging
Uses the energy of high-strength magnetic fields and radio waves to create images of the human body; Non-ionizing imaging modality
CT Scanning
Uses x-ray energy and sophisticated software to create sectional images of the human body. Creates hundreds of views of patient anatomy.
Methods of Electrical imaging.
1. Electrocardiography 2. Electroencephalography
Electrocardiography
Method of imaging the electrical activities of the heart.
Electroencephalography
Method of imaging the electrical activities of the brain
Nuclear Medicine
Uses the energy of the atom to create medical images
Nuclear Medicine Technology uses energy to create images of both __________and __________.
1. Anatomic structures 2. Physiologic actions
What is nuclear medicines energy form? How are they made?
gamma radiation. Uses radioactive isotopes to create gamma radiation
What type of imaging requires the use of a catheter and the injection of x-ray contrast material to visualize anatomy?
Cardiovascular Interventional Imaging
Radiation Therapy
Uses very-highenergy ionizing radiation to treat malignant tumors (cancer)
Thermograms
Images produced by the body's naturally emitted heat energy that can be useful in demonstrating conditions such as changes in the body's circulation.
Who was the German physicist that discovered the x-rays? When?
Wilhelm C. Rontgen, November 8, 1895
What was Rontgen's first known x-ray image?
His wife's hand
Crookes Tube
Large, partially evacuated glass tube made up of a cathode and anode attached to an electrical supply invented by Sir William Crookes. It is also the forerunner of the modern x-ray tube.
The Crookes Tube was also called a __________.
"Cathode Ray" tube
Received a Nobel Prize in Physics in 1901.
Rontgen
Predominantly a diagnostic service that focuses on imaging of patients to diagnose their medical condition
Radiology
What are most health careers referred to as?
Allied Health