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Diagnostic Tests - scorebuilders p 220-222

Terms in this set (15)

Ateriography
-radiograph
-visualizes injected radiopaque dye in an artery
-for arteriosclerosis, tumors, or blockages
Arthrography
-invasive test
-contrast medium for joint structures through radiographs
-soft tissue disruption seen as leakage from the joint cavity and capsule
Bone Scan
-invasive test
-isotopes ID stress fractures, infection, tumors
-ID bone disease, stress fractures, 4-7+% bone loss
Computed Tomography (CT)
-cross-sectional images based on x-ray attenuation
-computerized analysis of changes in absorption
-detailed reconstructed image
-Dx spinal lesions; for brain studies
Doppler ultrasonography
-non invasive test
-evaluates blood flow in major vessels
-transmission and reflection of high frequency sound waves
-produces cross-sectional images
-variety of planes
Electrocardiography
-recording of electrical heart activity
-distinct wave forms
-ID conduction abnormalities, cardiac arrhythmias, and myocardial ischemia
P wave
atrial depolarization
QRS complex
ventricular depolarization
T wave
ventricular repolarization
Electroencephalography
-recording of electrical brain activity
-two electrodes placed at different locations on sclap,
-measures electrical potential between them
-assess seizure activity, metabolic disorders, cerebellar lesions
Fluoroscopy
-show motion in joints
-xray imaging
-joint placed between fluorescent screen and roentgen tube
-not common b/c excessive radiation
Magnetic Resonance Imaging (MRI)
non-invasive
-magnetic fields produce image of bone and soft tissue
-mm, menisci, ligaments, tumors, internal organs
-very expensive
-pt must remain still for long time
Myelography
-invasive test
-combines fluoroscopy and radiography
-spinal subarachnoid space
-spinal tap injects contrast medium to epidural space
-ID bone displacement, disk herniation, spinal cord compression or tumors
Venography
-radiograph
-injected radiopaque dye in a vein
-ID tumors or blockages in the venous network
X-Ray
-radiographic photograph
-common
-dx musculoskeletal problems
-ex. fractures, dislocations, bone loss
-planar images
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