Medical Imaging
Medical Imaging is the technique and process used to create
images of the human body or body parts for clinical purposes most commonly used
to examine diseases or assist in determining a diagnosis.
X-ray-A form of electromagnetic radiation where a machine
sends photons to pass through the body. A special film is used to record the
images that are created. Most commonly used to diagnose bone fractures.
Ultrasound (US) - Involves exposing part of the body to high
frequency sound waves to produce pictures inside the body. Unlike x-rays,
ultrasounds do not use ionizing radiation that is used in x-rays. Basic
ultrasound images can capture the structure and movement of the body’s internal
organs as well as blood flowing through vessels. Ultrasound may be used for
pregnant woman to determine the vitality of a fetus and surrounding structures
and can also detect deep vein thrombosis.
Computed Tomography (CT)-Combines special x-ray equipment
with sophisticated computers to produce multiple images or pictures of inside
of the body. Cross sectional images can be made providing greater clarity and
reveal more details than regular x-ray exams. CT may be used for stroke victims
to detect bleeding in the brain.
Magnetic Resonance Imaging (MRI) - Uses a powerful magnetic
field, radio frequency pulses and a computer to produce detail pictures of
organs, soft tissues, bone and virtually all other internal body structures.
MRI does not use ionizing radiation used in x-rays. MRI may be used to detect a
ligament tears, rotator cuff injuries, and much smaller, more defined
abnormalities not easily detected with CT.
e-Learning QUIZ ID # Web-01-01-12
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DEADLINE FOR SUBMISSION OF THIS
QUESTIONNAIRE IS JUNE 30, 2012
Name_____________________________________ Member #
___________________
Email address: _____________________________ Phone
number:_______________
Karen Jenner, CHUC, of
Topic: Medical Imaging
Learning Objective: 1.
Define Medical Imaging.
2. Describe the four most commonly
ordered medical imaging tests.
References: http://en.wikipedia.org/wiki/Medical_imaging
http://www.nlm.nih.gov/medlineplus/ency/article/003337.htm
Instructions: Using the definitions and
resources listed above, circle the most correct answer.
1. What test(s) does not contain radiation?
a. MRI and Ultrasound
b. CT
c. x-ray
d. barium enema and upper gi
2. Which of the following can an ultrasound detect?
a. fetal growth
b. ligament tears
c. strokes
d. fractures
3. What kind of frequency does an MRI emit?
a. ionic field
b. sonic waves
c. radiation
d. radio frequency pulses/magnetic field
4.An x-ray is most commonly used to diagnose what condition?
a. tumors
b. blood clots
c. bone fractures
d. torn ligaments
5. What method can detect deep vein thrombosis?
a. CT
b. x-ray
c. ultrasound
d. naked eye
6. The technique used to create images of the human body is
known as:
a. ultrasonic mammography
b. computed diagnostics
c. medical imaging
d. magnetic cross sectional
7.. Which of the following is the best imaging test to
diagnose a stroke?
a. x-ray
b. ultrasound
c. MRI
d. CT
8. A child was skating and fell and her wrist appears oddly
shaped. What test is the physician most likely to order?
a. CT
b. ultrasound
c. x-ray
d. MRI
9. Which procedure can detect smaller, more defined abnormalities
not easily detected with a CT?
a. x-ray
b. ultrasound
c. MRI
d. radiation therapy
10. Which of the following is the best diagnostic test to
determine the sex of an unborn baby?
a. CT
b. x-ray
c. ultrasound
d. fetal heart monitoring