Several methods allow regional gas exchange to be inferred from imaging of regional
ventilation and perfusion (V/Q) ratios. Each method measures slightly different aspects of …

Quantitative assessment of the right-to-left ratio of pulmonary blood flow distribution is
important for determining the clinical indications for treating pulmonary arterial branch …

Partial liquid ventilation (PLV) with high-specific-weight perfluorocarbon liquids has been
shown to improve oxygenation in acute lung injury, possibly by redistributing perfusion from …

Regional changes in ventilation and perfusion occurring in the early hours after smoke
inhalation injury were evaluated through the use of positron emission tomography. Five …

Human lungs weighing ca 600g permit the passage of 5–6l of blood per minute. The blood
capacity of the human lungs is about 0.5 l. Consequently, each 0.5 l of blood is during 5s …

Although the intravenous route of administration is rarely used for drugs, it is by far the most
common route for PET and SPECT radiotracers. This article discusses the use of planar and …

Objective Quantitative assessment of pulmonary blood flow distribution is important when
determining the clinical indications for treating pulmonary arterial branch stenosis. Lung …

The morphological evaluation of the lung is important in the clinical evaluation of pulmonary
diseases. However, the disease process may primarily result in change in pulmonary …

Variance is a statistical parameter used to characterize heterogeneity or variability in data
sets. However, measurements commonly include noise, as random errors superimposed to …

Kidney motion during dynamic renal scintigraphy can cause errors in calculated renal
function parameters. Our goal was to develop and validate algorithms to detect and correct …