8 articles
Auditory steady-state response
The auditory steady-state response (ASSR), also known as the steady-state evoked potential or amplitude-modulation following response, is an electrophysiological test that objectively estimates hearing thresholds in sleeping or sedated infants.
Cardiac stress testing
Cardiac stress testing monitors the heart with ECG, echocardiography, or cardiac MRI during exercise or drug-induced stress, detecting coronary artery disease and ischemic areas at risk of infarction.
Insulin tolerance test
The insulin tolerance test (ITT) is a diagnostic procedure in which intravenous insulin induces hypoglycemia, and growth hormone and cortisol responses are measured to assess pituitary function.
Optical biometry
Optical biometry is a non-contact ophthalmic technique that uses infrared light to measure the eye's axial length, replacing ultrasound for intraocular lens power calculation before cataract surgery.
Patient-specific modeling
Patient-specific modeling builds a mathematical or physics-based simulation of an individual patient's anatomy, physiology, or disease to support diagnosis and treatment planning, with several implementations cleared as medical devices.
Seismocardiography
Seismocardiography (SCG) is a noninvasive method that records the low-frequency vibrations the beating heart produces at the chest surface, first recorded by P. Mounsey in 1957.
Sleep Latency
Sleep latency (sleep-onset latency, SOL) is the time from lights out to the first epoch of any sleep stage. Measured by PSG, actigraphy, diaries, and the MSLT, where mean latency ≤8 minutes supports narcolepsy diagnosis.
Urea breath test
The urea breath test (UBT) is a noninvasive diagnostic test in which swallowed labeled urea reveals active Helicobacter pylori infection, and it confirms cure after eradication therapy.