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Elysse NPTE NM > NM Imaging > Flashcards

Flashcards in NM Imaging Deck (14):
1

Tomography

Layered X-ray procedures
Delineates bone lesions

2

Ventriculography

Air injection into ventricles, then Xray

3

Myelography

Air injection into spinal subarachnoid space then Xray
Delineates impingements

4

Cerebral Angiography

Dye into carotid and vertebral arteries then Xray
Invasive, may be irritating

5

Computed Tomography (CT)

Xray in cross sections of the brain
Add contrast to increase sensitivity
Changes in density: bleeding, edema, infarction

6

Magnetic resonance imaging (MRI)

NO radiation, uses protons and neutrons - more sensitive for acute stroke
Good for soft tissue - bad for bone, metal implants, pacemakers

7

Positron emission tomography (PET)

Radioisotopes inhaled or injected then gamma-ray
Good for metabolism and blood flow - bone mets
Lacks detailed resolution

8

Electroencephalography (EEG)

Brain electrical activity, structural disease of the brain

9

Echoencephalogram (ultrasound)

Reflected US waves analyzed
detection of plaques in carotid arteries, shifts of midline structures

10

Lumbar Puncture Purpose

Below L1-L2
Withdraw CSF for chemical analysis: protein, glucose, immunoglobulin content, cell count
Measure ICP and fluid dynamics
Injection of contrast
Injection of therapeutic agents

11

Lumbar Puncture Complications

Severe HA (relieved by laying down)
Infection
Epidural hematoma
Uncal herniation

12

Normal CSF findings (appearance, volume, pressure, protein)

Clear, odorless
90-150mL Adult, 60-100mL Child
90-180mmH2O, 10-100 mmH2O
15-45mg/dL, 15-100mg/dL

13

Electromyography (EMG)

Detects electrical activity arising from muscles
LMN disease or primary mm disease at NM junction
Nerve conduction velocity: neuropathies with demyelination (guillan-barre and charcot-marie tooth)

14

EMG results: fibrillation, fasciculation

Fibrillation: independent mm fibers contract spontaneously. 1-3 weeks after losing nerve

Fasciculation: motor unity fibers all contract spontaneously.

Both present with incomplete LMN lesions, only fibrillations with complete LMN lesions