partial volume effect

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• Partial volume — The partial volume effect occurs in medical imaging when a single voxel contains a mixture of multiple tissue values. A lower resolution increases this effect. The method to correct for the partial volume effect is referred to as partial volume… …   Wikipedia

• Partial differential equation — A visualisation of a solution to the heat equation on a two dimensional plane In mathematics, partial differential equations (PDE) are a type of differential equation, i.e., a relation involving an unknown function (or functions) of several… …   Wikipedia

• Partial regression plot — In applied statistics, a partial regression plot attempts to show the effect of adding an additional variable to the model (given that one or more indpendent variables are already in the model). Partial regression plots are also referred to as… …   Wikipedia

• Partial correlation — In probability theory and statistics, partial correlation measures the degree of association between two random variables, with the effect of a set of controlling random variables removed. Contents 1 Formal definition 2 Computation 2.1 Using… …   Wikipedia

• Partial discharge — In electrical engineering, a partial discharge (PD) is a localised dielectric breakdown of a small portion of a solid or liquid electrical insulation system under high voltage stress. While a corona discharge is usually revealed by a relatively… …   Wikipedia

• Partial thromboplastin time — The partial thromboplastin time (PTT) or activated partial thromboplastin time (aPTT or APTT ) is a performance indicator measuring the efficacy of both the intrinsic (now referred to as the contact activation pathway) and the common coagulation… …   Wikipedia

• Partial residual plot — In applied statistics, a partial residual plot is a graphical technique that attempts to show the relationship between a given independent variable and the response variable given that other independent variables are also in the… …   Wikipedia

• volume — Space occupied by matter, expressed usually in cubic millimeters, cubic centimeters, liters, etc. See water. SEE ALSO: capacity. [L. volumen, something rolled up, scroll, fr. volvo, to roll] atomic v. the atomic weight of an element divided by… …   Medical dictionary

• Joule–Thomson effect — In physics, the Joule–Thomson effect or Joule–Kelvin effect describes the temperature change of a gas or liquid when it is forced through a valve or porous plug while kept insulated so that no heat is exchanged with the environment.cite book… …   Wikipedia

• Pressure volume diagram — Thermodynamics …   Wikipedia

• ICD-9-CM Volume 3 — is a system of procedural codes. It is a subset of ICD 9 CM (volumes 1 and 2 are used for diagnostic codes.) The United States National Center for Health Statistics drafted ICD 10 PCS in 2000 as a potential replacement for ICD 9 CM Volume 3, but… …   Wikipedia