RAS

• radiologist aid system [digital mammography algorithm];

• rapid atrial stimulation;

• recurrent aphthous stomatitis;

• reflex activating stimulus;

• reliability, availability, serviceability;

• remote access service;

• renal artery stenosis;

• renal artery stent;

• reninangiotensin system;

• residency application service;

• reticular activating system;

• rheumatoid arthritis serum;

• rotational atherectomy system;

• Rokitansky-Aschoff sinus;

• routine analysis station