Rui Carlos Sa
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Explore the profile of Rui Carlos Sa including associated specialties, affiliations and a list of published articles.
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26
Citations
351
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Recent Articles
1.
Kizhakke Puliyakote A, Tedjasaputra V, Petersen G, Sa R, Hopkins S
J Appl Physiol (1985)
. 2024 Feb;
136(4):853-863.
PMID: 38385182
Ventilation-perfusion matching occurs passively and is also actively regulated through hypoxic pulmonary vasoconstriction (HPV). The extent of HPV activity in humans, particularly normal subjects, is uncertain. Current evaluation of HPV...
2.
The spatial-temporal dynamics of pulmonary blood flow are altered in pulmonary arterial hypertension
Kizhakke Puliyakote A, Prisk G, Elliott A, Kim N, Pazar B, Sa R, et al.
J Appl Physiol (1985)
. 2023 Mar;
134(4):969-979.
PMID: 36861672
Global fluctuation dispersion (FDglobal), a spatial-temporal metric derived from serial images of the pulmonary perfusion obtained with MRI-arterial spin labeling, describes temporal fluctuations in the spatial distribution of perfusion. In...
3.
Hopkins S, Dominelli P, Davis C, Guenette J, Luks A, Molgat-Seon Y, et al.
Ann Am Thorac Soc
. 2020 Nov;
18(3):399-407.
PMID: 33196294
To minimize transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the novel coronavirus responsible for coronavirus disease (COVID-19), the U.S. Centers for Disease Control and Prevention and the World...
4.
Geier E, Theilmann R, Darquenne C, Prisk G, Sa R
J Vis Exp
. 2019 Jun;
(148).
PMID: 31233033
Specific ventilation imaging (SVI) is a functional magnetic resonance imaging technique capable of quantifying specific ventilation - the ratio of the fresh gas entering a lung region divided by the...
5.
Asadi A, Sa R, Arai T, Theilmann R, Hopkins S, Buxton R, et al.
J Appl Physiol (1985)
. 2019 Jun;
127(2):365-375.
PMID: 31169470
Pulmonary vascular tone is known to be sensitive to both local alveolar Po and Pco. Although the effects of hypoxia are well studied, the hypercapnic response is relatively less understood....
6.
Arai T, Horn F, Sa R, Rao M, Collier G, Theilmann R, et al.
J Appl Physiol (1985)
. 2018 Aug;
125(5):1526-1535.
PMID: 30161004
Two magnetic resonance specific ventilation imaging (SVI) techniques, namely, oxygen-enhanced proton (OE-H) and hyperpolarized He (HP-He), were compared in eight healthy supine subjects [age 32 (6) yr]. An in-house radio...
7.
Smith Z, Krizay E, Sa R, Li E, Scadeng M, Powell Jr F, et al.
J Appl Physiol (1985)
. 2017 Jul;
123(6):1477-1486.
PMID: 28705997
Ventilation and cerebral blood flow (CBF) are both sensitive to hypoxia and hypercapnia. To compare chemosensitivity in these two systems, we made simultaneous measurements of ventilatory and cerebrovascular responses to...
8.
Sa R, Henderson A, Simonson T, Arai T, Wagner H, Theilmann R, et al.
J Appl Physiol (1985)
. 2017 Mar;
123(1):136-146.
PMID: 28280105
We have developed a novel functional proton magnetic resonance imaging (MRI) technique to measure regional ventilation-perfusion (V̇/Q̇) ratio in the lung. We conducted a comparison study of this technique in...
9.
Sa R, Zeman K, Bennett W, Prisk G, Darquenne C
J Aerosol Med Pulm Drug Deliv
. 2017 Mar;
30(5):322-331.
PMID: 28277885
Background: To quantify the relationship between regional lung ventilation and coarse aerosol deposition in the supine healthy human lung, we used oxygen-enhanced magnetic resonance imaging and planar gamma scintigraphy in...
10.
Cook F, Geier E, Asadi A, Sa R, Prisk G
3D Print Addit Manuf
. 2016 Dec;
2(4):196-203.
PMID: 27917393
Specific ventilation imaging (SVI) is a noninvasive magnetic resonance imaging (MRI)-based method for determining the regional distribution of inspired air in the lungs, useful for the assessment of pulmonary function...