Introduction to Radiologic and Imaging Sciences and Patient Care: Introduction to Imaging and Radiologic Sciences Flashcards


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1

Medical radiation sciences uses ----- to create images of the human body.

energy

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Radiation

Energy that is transmitted by waves through space or through a medium (matter).

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Energy

the capacity to do work

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Ionization

Process by which a neutral atom gains or loses an electron, thus gaining a net charge.

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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

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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

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How are x-rays created?

X-rays are created when high-speed electrons are slowed or suddenly stopped.

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Radiography

Uses electromagnetic energy in the form of x-rays to create medical images.

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Medical Sonography

Field study that creates images by recording reflected sound waves. It is non-ionizing and has a wide variety of medical applications.

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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

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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

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CT Scanning

Uses x-ray energy and sophisticated software to create sectional images of the human body. Creates hundreds of views of patient anatomy.

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Methods of Electrical imaging.

1. Electrocardiography 2. Electroencephalography

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Electrocardiography

Method of imaging the electrical activities of the heart.

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Electroencephalography

Method of imaging the electrical activities of the brain

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Nuclear Medicine

Uses the energy of the atom to create medical images

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Nuclear Medicine Technology uses energy to create images of both __________and __________.

1. Anatomic structures 2. Physiologic actions

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What is nuclear medicines energy form? How are they made?

gamma radiation. Uses radioactive isotopes to create gamma radiation

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What type of imaging requires the use of a catheter and the injection of x-ray contrast material to visualize anatomy?

Cardiovascular Interventional Imaging

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Radiation Therapy

Uses very-highenergy ionizing radiation to treat malignant tumors (cancer)

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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.

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Who was the German physicist that discovered the x-rays? When?

Wilhelm C. Rontgen, November 8, 1895

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What was Rontgen's first known x-ray image?

His wife's hand

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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.

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The Crookes Tube was also called a __________.

"Cathode Ray" tube

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Received a Nobel Prize in Physics in 1901.

Rontgen

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Predominantly a diagnostic service that focuses on imaging of patients to diagnose their medical condition

Radiology

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What are most health careers referred to as?

Allied Health