Results 261 to 270 of about 3,345,378 (306)

Distribution of ventilation-perfusion ratios in pulmonary sarcoidosis.

Sarcoidosis, 1987
In 14 patients with advanced stage pulmonary sarcoidosis the distribution of regional ventilation-perfusion ratios (V/Q) was obtained by quantitative analysis of ventilation-perfusion single photon emission computed tomography (SPECT) of the lungs. In 6 patients normal V/Q distributions were found with a decreased DLCO in only one of them.
A, Zwijnenburg, C, Alberts, H M, Jansen, C M, Roos, H R, Marcuse   +4 more
openaire   +1 more source

Quantification of regional ventilation-perfusion ratios with PET.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 2004
The topographic matching of alveolar ventilation (V(A)) and perfusion (Q) is the main determinant of gas exchange efficiency of the lung. However, no pulmonary functional imaging technique has been shown to predict whole-lung gas exchange in health and disease.
Marcos F, Vidal Melo, Dominick, Layfield, R Scott, Harris, Kevin, O'Neill, Guido, Musch, Torsten, Richter, Tilo, Winkler, Alan J, Fischman, Jose G, Venegas   +8 more
openaire   +1 more source

Distribution of ventilation/perfusion ratios in pulmonary embolism: an adjunct to the interpretation of ventilation/perfusion lung scans.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 2003
Diagnosis of pulmonary embolism (PE) by visual interpretation of ventilation/perfusion (V/Q) scans is limited by the high percentages of patients classified in the intermediate- and low-probability categories. This study proposes a quantitative analysis of the distribution of V/Q ratios to better identify patients with PE.We studied 99 consecutive ...
Emmanuel, Itti, Séverine, Nguyen, Fabrice, Robin, Serge, Desarnaud, Jean, Rosso, Alain, Harf, Michel, Meignan   +6 more
openaire   +1 more source

Vaping disrupts ventilation-perfusion matching in asymptomatic users

Journal of Applied Physiology, 2021
Laura E Crotty Alexander, Ann R Elliott, Susan R Hopkins   +2 more
exaly  

VENTILATION-PERFUSION RATIO

Anesthesiology, 1966
openaire   +1 more source

Characterizing spatial differences between SPECT-ventilation and SPECT-perfusion in patients with lung cancer undergoing radiotherapy

Radiotherapy and Oncology, 2021
Richard Castillo, Thomas M Guerrero, Edward Castillo   +2 more
exaly  

Ventilation-Perfusion Ratio

Anesthesiology, 1970
openaire   +1 more source

Distributions of Ventilation-Perfusion Ratios in Acute Respiratory Failure

Chest, 1974
P D, Wagner, R B, Laravuso, R R, Uhl, J B, West   +3 more
openaire   +2 more sources

VENTILATION PERFUSION FUNCTIONAL DIFFERENCE IMAGES IN LUNG SPECT: A QUANTITATIVE IMPROVEMENT ON VENTILATION PERFUSION RATIO

Physica Medica, 2022
Robin De Nijs, Ronan MG Berg, Sofie Lindskov Hansen, Jann Mortensen   +3 more
openaire   +1 more source

Pulmonary ventilation-perfusion MR imaging in clinical patients

Journal of Magnetic Resonance Imaging, 2001
Shuichi Murashima, Nanaka Ishida
exaly