IR

• drop of voltage across a resistor produced by a current;

• ileal resection;

• immune response;

• immunization rate;

• immunoreactive;

• immunoreagent;

• in room;

• index of response;

• impedance rheography;

• individual reaction;

• inferior rectus [muscle];

• inflow resistance;

• information retrieval;

• infrared;

• infrarenal;

• inside radius;

• insoluble residue;

• inspiratory reserve;

• inspiratory resistance;

• insulin resistance;

• intermediate representation;

• internal resistance;

• internal rotation;

• interventional radiology;

• intrarectal;

• intrarenal;

• inversion recovery;

• inverted repeat;

• irritant reaction;

• ischemia-reperfusion;

• isovolumic relaxation