A technique has been developed to measure regional values of vascular and extravascular
lung density using positron emission and transmission tomography. Quantitative values of …

Regional lung density (LD) and lung water (LW) measurements were made with positron
transmission and emission tomography (PET) in normal and edematous lung in supine dogs …

Regional lung hematocrit ratio (R) was measured in five normal subjects and five patients (2
with pneumonia, 2 with nephrotic syndrome with anemia, and 1 with pancreatitis) using …

We have measured regional pulmonary blood flow (PBF) in normal dogs with positron
emission tomography (PET) and 15O-labeled water (H2 (15) O). The method is …

BACKGROUND: Positron emission tomography, performed with isotopes of very short half
life, can be used to relate local lung tissue density to local ventilation and to the ventilation …

Regional lung density (DL) and regional fractional pulmonary blood volume (VB) were
measured quantitatively during tidal breathing in 30 healthy supine subjects (15 smokers …

Computed tomography scanners can be calibrated to provide reproducible measurements
for a quantitative analysis of lung density. Typical histograms for inspiration and expiration …

Regional lung density (g lung/ml thoracic volume) and fractional pulmonary blood volume
(ml blood/ml thoracic volume) have been measured by positron tomography in 10 patients …

Pulmonary Perfusion and Density Gradients in Page 1 GENERAL NUCLEAR MEDICINE
Pulmonary Perfusion and Density Gradients in Healthy Volunteers Helen M. Almquist, John …

To determine the spatial distributions of pulmonary perfusion, shunt, and ventilation, we
developed a compartmental model of regional 13N-labeled molecular nitrogen (13NN) …