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- QuadrantanopiaQuadrantanopia, quadrantanopsia, refers to an anopia (loss of vision) affecting a quarter
- Qualia Research InstituteAmerican non-profit organization
- Quantitative models of the action potentialIn neurophysiology, several mathematical models of the action potential have been develope
- Quantitative susceptibility mappingQuantitative susceptibility mapping (QSM) provides a novel contrast mechanism in magnetic

