ventilation-perfusion scan

ventilation-perfusion scan
V/Q scan a scintigraphic technique for demonstrating perfusion defects in normally ventilated areas of the lung in the diagnosis of pulmonary embolism, consisting of the imaging of the distribution of an inhaled radionuclide followed by the imaging of the perfusion of the lungs by an injected radionuclide.

Medical dictionary. 2011.

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  • Ventilation/perfusion scan — A ventilation/perfusion lung scan, also called a V/Q lung scan, is a type of medical imaging used to evaluate the circulation of air and blood within a patient s lungs. The ventilation part of the test looks at the ability of air to reach all… …   Wikipedia

  • Ventilation/perfusion ratio — In respiratory physiology, the ventilation/perfusion ratio (or V/Q ratio) is a measurement used to assess the efficiency and adequacy of the matching of two variables: [LoyolaMedEd|Medicine/pulmonar/physio/pf9.htm#q1] * V ventilation the air… …   Wikipedia

  • perfusion scan — a technique for demonstrating an abnormal blood supply to an organ by injecting a radioactive tracer or contrast medium. One of the most common uses, often in conjunction with ventilation scanning (see ventilation perfusion scanning), is to… …   Medical dictionary

  • perfusion scan — a technique for demonstrating an abnormal blood supply to an organ by injecting a radioactive tracer or contrast medium. One of the most common uses, often in conjunction with ventilation scanning (see ventilation perfusion scanning), is to… …   The new mediacal dictionary

  • Perfusion scanning — Perfusion is defined as the passage of fluid through the lymphatic system or blood vessels to an organ or a tissue. [American Psychological Association (APA):perfusion. (n.d.). Dictionary.com Unabridged (v 1.1). Retrieved March 20, 2008, from… …   Wikipedia

  • scan — 1. To survey by traversing with an active or passive sensing device. 2. The image, record, or data obtained by scanning, usually identified by the technology or device employed; e.g., CT s., radionuclide s …   Medical dictionary

  • Positive pressure ventilation — Intervention ICD 9 CM 93.90 93.91 Me …   Wikipedia

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  • Mechanical ventilation — In architecture and climate control, mechanical or forced ventilation is the use of powered equipment, e.g. fans and blowers, to move air  see ventilation (architecture). Mechanical ventilation Intervention …   Wikipedia

  • Octreotide scan — Diagnostics 111In pentetreotide scintigraphy of the 41 year old man with ectopic Cushing syndrome caused by a neuroendocrine carcinoma of the mesentery. Radiotracer accumulation in the left thyroid in 10/2003 (arrow). The mesenterial… …   Wikipedia

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