Diagnostic Testing Flashcards
Plain Radiography
X-rays used to view skeletal and other internal structures for diagnostic purposes are high-energy, ionizing electromagnetic radiation
Uses for Plain Radiography
1) Identify the location of abnormalities and foreign bodies (bullets, ingested items, or calculi)
2) Located retained foreign objects (sponges, sharps, instruments)
3) Discover fluid or air within body cavities
4) Verify correct location for an operative procedure
5) Bone fractures
Mammography
Mammography utilizes traditional or digital X-rays to locate tumors of the breast in their early stages
How is mammography used?
The breast is tightly held in a compression plate device intended to decrease the density of the tissue for better visualization
Radiopaque Contrast Media Imaging
Contrast is the difference in optical density in a radiograph that results from a difference in radiolucency or penetrability of an object
Where is contrast media injected?
Arteries, veins; ducts; subarachnoid space
T/F
Radiopaque contrast materials are water-soluble organic molecules with bound iodine
True
Name some brands of contrast media
Hypaque Conray Isovue Visipaque Optiray Cystografin Gastrografin Renografin
Side affects of using contrast media
Flushing Warmth Light-headedness Nausea Vomiting
What does CAT scan stand for?
Computed Axial Tomography
T/F
CT or CAT scan produces images in chunks
False
It is the use of specialized X-ray machine that produces pictures of the body in ‘slices’
Adjustments for CT slices in diameter
2 to 10 mm thick
T/F
You cannot use contrast media in a patient with an iodine allergy
True
Contrast media is iodine based; also cannot be used in shellfish allergy patients
Fluoroscopy
“real time” x-ray allowing the movement of joints and organs to be viewed directly
T/F
Fluoroscopy and C-Arm are the same machine
True
