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.
Magnetic resonance venography (MRV) is an accurate, noninvasive technique used to detect deep vein thrombosis. This application of MRI provides images of blood flow in diseased and normal veins. In patients who are allergic to iodinated contrast medium, MRV is used in place of venography or CT venography. MRV is particularly useful for visualizing vascular abnormalities, thrombosis, and other pathology. MRV can be accomplished with a contrast-enhanced (CE) or nonâcontrast-enhanced method. Special imaging sequences allow the visualization of moving blood within the venous system.