X-rays
CT
MRI
Bone Scan
Vocab
100
X-rays are a form of _______________ radiation that is sent through the body.
electromagnetic
100
What does CT stand for?
Computerized Axial Tomography (CAT Scan).
100
What does MRI stand for?
Magnetic resonance imaging
100
Bone scan is a _________ imaging test.
nuclear
100
The image is a picture of the machine used for what type of test
MRI
200
What color do the images appear for this diagnostic test?
white and black
200
What structures of the body is CT scan best for?
chest, abdomen, pelvis, spine, and other skeletal structures.
200
T/F MRI uses radiation just like CT scans
false, uses magnet such as radio waves
200
t/f a bone scan uses two-dimensional images of the body
true
200
The image is a picture of the machine used for what type of test
X-rays
300
t/f
metal will appear white
structures with air will appear black
true
300
What type of radiation does CT use (hint: increases your risk of developing cancer)
ionizing
300
An MRI produces detailed images of the body. Describe the types of tissues or structures that are best visualized with MRI compared to X-rays or CT scans.
Detailed images produced of soft tissue, versus X-rays and CT scans, which produce images of hard tissues such as bones and teeth.
300
Used to examine the _______________ to detect abnormalities.
skeleton
300
What is diagnostic imaging?
technologies that doctors use to look inside your body for clues about a medical condition. This includes X-rays, CT scans, nuclear medicine scans, MRI scans, and ultrasound.
400
- X-ray is performed by a machine that sends individual X-ray particles, called __________, through the body.
photons
400
What type of images can a CT scan produce and take of te strictures of the body?
produce cross-sectional images of the bones and soft tissues inside your body
400
MRI is used to examine various parts of the body. List the main structures or regions that are commonly examined with MRI scans.
Used to examine the brain, spine, joint, abdomen, blood vessels, and pelvis.
400
Bone scans work by injecting tiny amounts of ______ into the body, which collect in the bones and allow imaging of areas with high bone activity.
radionuclides
400
What is radiology?
a branch of medicine concerned with the use of radiant energy (such as X-rays or ultrasound) in the diagnosis and treatment of disease
500
Name an advantage and disadvantage of x-rays
Advantages
- Quick, painless, noninvasive test
- Relatively inexpensive
Disadvantages
- Small amount of radiation exposure
- Contrast materials sometimes used might produce an allergic reaction
500
Name an advantage and disadvantage of CT scans
Advantages
- Painless, noninvasive, and accurate test that is fast and simple
- Able to image bone, soft tissue, and blood vessels all at the same time
- Can be performed if patient has an implanted medical device of any kind
Disadvantages
- Small amount of ionizing radiation exposure
- Contrast materials sometimes used might produce an allergic reaction
500
Name an advantage and disadvantage of MRI's
Advantages
- Noninvasive test that poses almost no risk when safety guidelines are followed
- Does not involve exposure to ionizing radiation
- Images of the soft tissue structures of the body are more likely to identify and accurately characterize diseases than other imaging methods
- Contrast materials sometimes used less likely to produce an allergic reaction than those used in x-rays and CT scans
Disadvantages
- Implanted medical devices that contain metal may malfunction or cause problems during an MRI exam
- Very slight risk of an allergic reaction if contrast material is injected
- Confined space may induce panic or feelings of claustrophobia in some patients
500
Name an advantage and disadvantage of bone scans
Advantages
- Noninvasive
- Extremely sensitive to abnormalities and variations in bone metabolism
- Can scan the entire skeleton
Disadvantages
- Cannot determine cause of bone metabolism abnormalities
- Tracers used produce a small amount of radiation exposure
500
What is osteosarcoma
a cancer derived from bone or containing bone tissue