Gravity-independent inequality in pulmonary blood flow in humans

TS Hakim, R Lisbona, GW Dean - Journal of Applied …, 1987 - journals.physiology.org
Single-photon emission computerized tomography of the lung with 99mTc-labeled human
albumin macroaggregates (99mTc-MAA) was used in six healthy subjects to study the three …

Measurement of the distribution of ventilation-perfusion ratios in the human lung with proton MRI: comparison with the multiple inert-gas elimination technique

RC Sá, AC Henderson, T Simonson… - Journal of Applied …, 2017 - journals.physiology.org
We have developed a novel functional proton magnetic resonance imaging (MRI) technique
to measure regional ventilation-perfusion (V̇A/Q̇) ratio in the lung. We conducted a …

Voxelwise mapping of magnetic resonance ventilation-perfusion ratio in a porcine model by multimodality registration: technical note1

I Hasegawa, H Uematsu, JC Gee, P Rogelj, HK Song… - Academic radiology, 2003 - Elsevier
Rationale and Objectives. The purpose of this study was to demonstrate the construction of
voxelwise ventilation-perfusion (V/Q) ratio maps in a porcine model by nonrigidly aligning …

Comparison of phase-resolved functional lung (PREFUL) MRI derived perfusion and ventilation parameters at 1.5 T and 3T in healthy volunteers

J Glandorf, F Klimeš, A Voskrebenzev, M Gutberlet… - PloS one, 2020 - journals.plos.org
Purpose The purpose of this study is to evaluate the influence of different field strengths on
perfusion and ventilation parameters, SNR and CNR derived by PREFUL MRI using …

Effect of lung inflation on fluid flux in zone 1 lungs

RK Albert, WJ Lamm… - Journal of Applied …, 1988 - journals.physiology.org
Because of conflicting data in the literature, we studied the effect of positive-pressure
inflation on transvascular fluid filtration in zone 1 lungs. Lungs from New Zealand White …

Free‐breathing quantification of regional ventilation derived by phase‐resolved functional lung (PREFUL) MRI

F Klimeš, A Voskrebenzev, M Gutberlet… - NMR in …, 2019 - Wiley Online Library
Purpose To test the feasibility of regional fully quantitative ventilation measurement in free
breathing derived by phase‐resolved functional lung (PREFUL) MRI in the supine and …

A linearized expiration flow homogenizes the compartmental pressure distribution in a physical model of the inhomogeneous respiratory system

C Wenzel, C Frey, J Schmidt… - Physiological …, 2020 - iopscience.iop.org
Objective: Flow-controlled expiration (FLEX) and flow-controlled ventilation (FCV) imply a
linearized expiration, and were suggested as new approaches for lung-protective …

Influence of vascular distending pressure on regional flows in isolated perfused dog lungs

KC Beck - Journal of Applied Physiology, 1990 - journals.physiology.org
To confirm the regional differences in vascular pressure vs. flow properties of lung regions
that have been documented in zone 2 conditions [pulmonary venous pressure (Ppv) less …

Application of model‐free analysis in the MR assessment of pulmonary perfusion dynamics

KH Chuang, MT Wu, YR Lin, KS Hsieh… - … in Medicine: An …, 2005 - Wiley Online Library
Dynamic contrast‐enhanced (DCE) MRI has been used to quantitatively evaluate pulmonary
perfusion based on the assumption of a gamma‐variate function and an arterial input …

Gravity and pulmonary blood flow distribution

JB West - Journal of Applied Physiology, 1992 - journals.physiology.org
GLENNY, ROBB W., WAYNE JE LAMM, RICHARD K. AL-BERT, AND H. THUMA~
ROBERTSON. Grwityisaminordeterminant of pulmonary blood flow distribution. J. Appl …