Let's review. Exponential decay occurs when a population declines at a consistent rate. No matter how many are in the population at some point in time, the percent that leave the population in the next period of time will be consistent.
Definition of 'ventriculography'. Word Frequency. ventriculography (vÉnËtrÉªkjÊËlÉÉ¡rÉfÉª ) noun medicine. 1. radiography of the ventricles of the heart after injection of a contrast medium. 2. radiography of the ventricles of the brain after injection of air or a radiopaque material.
(Perfusion Lung Scan, Lung Perfusion Scintigraphy, Radionuclide Pulmonary Scan, Ventilation-Perfusion Scan, V/Q Scan) A lung scan is a specialized radiology procedure used to examine the lungs to identify certain conditions. A lung scan may also be used to follow the progress of treatment of certain conditions. A lung scan is a type of nuclear medicine procedure. This means that a tiny amount of a radioactive substance is used during the procedure to assist in the examination of the lungs. There are 2 types of lung scans: ventilation scans and perfusion scans.