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Nervous System & Psychiatry - Q – Diagnostic Tests & Procedure & A – Meaning

QuestionAnswer
electrodiagnostic procedures diagnostic procedures used to evaluate the function of the nervous system by recording the electrical signals produced in the brain, spinal cord, and peripheral nerves
electroencephalogram (EEG) record of the minute electrical impulses of the brain; used to identify neurologic conditions that affect brain function and level of consciousness
evoked potentials record of minute electrical potentials (waves) that are extracted from ongoing EEG activity to diagnose auditory, visual, and sensory pathway disorders; also used to monitor the neurologic function of patients during surgery
polysomnography recording of various aspects of sleep (e.g., eye and muscle
(PSG) movements, respiration, and EEG patterns) to diagnose sleep disorders
lumbar puncture (LP) introduction of a specialized needle into the spine in the lumbar region for diagnostic or therapeutic purposes, such as to obtain CSF for testing; also called spinal tap
magnetic resonance imaging (MRI) (see Figs. 8-3, 8-4, and 8-10) nonionizing imaging technique using magnetic fields and radiofrequency waves to visualize anatomic structures (especially soft tissue), such as the tissues of the brain and spinal cord
magnetic resonance angiography (MRA) magnetic resonance imaging of blood vessels to detect pathologic conditions, such as thrombosis and atherosclerosis
intracranial MRA magnetic resonance image of the head to visualize the vessels of the circle of Willis (common site of cerebral aneurysm, stenosis, or occlusion)
extracranial MRA magnetic resonance image of the neck to visualize the carotid artery
nuclear medicine imaging radionuclide organ imaging
single-photon emission computed tomography (SPECT) brain scan scan combining nuclear medicine and computed tomography to produce images of the brain after the administration of radioactive isotopes
positron-emission tomography (PET) technique combining nuclear medicine and computed tomography to produce images of brain anatomy and corresponding physiology; used to study stroke, Alzheimer disease, epilepsy, metabolic brain disorders, chemistry of nerve transmissions in the brain, and
radiography x-ray imaging
cerebral angiogram x-ray of blood vessels in the brain after intracarotid injection of contrast medium
computed tomography (CT) of the head computed tomographic (x-ray) images of the head used to visualize abnormalities, such as brain tumors and malformations
myelogram x-ray of the spinal cord obtained after intraspinal injection of contrast medium
reflex testing test performed to observe the body′s response to a stimulus
deep tendon reflexes (DTR) involuntary muscle contraction after percussion at a tendon (e.g., patella or Achilles) indicating function; positive findings are either no reflex response or an exaggerated response to stimulus; numbers are often used to record responses
Babinski sign pathologic response to stimulation of the plantar surface of the foot; a positive sign is indicated when the toes dorsiflex
Babinski reflex (curl upward)
transcranial Doppler sonogram image made by sending ultrasound beams through the skull to assess blood flow in intracranial vessels; used in the diagnosis and management of stroke and head trauma
Created by: MT student1