Results 101 to 110 of about 43,651 (248)

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

A Real-Time Four-Dimensional Reconstruction Algorithm of Cine-Magnetic Resonance Imaging (Cine-MRI) Using Deep Learning. [PDF]

Cureus, 2022
Tamura Y, Demachi K, Igaki H, Okamoto H, Nakano M.   +4 more
europepmc   +1 more source

Low-field cine magnetic resonance imaging in aortic valve disease

The British Journal of Radiology, 1989
Abstract Cine magnetic resonance imaging (MRI) holds considerable promise as a means of detecting abnormal blood flow patterns within the heart and great vessels. To date, the majority of techniques employed have required moderate to high field strengths.
M J, Metcalfe, R A, Jones, T W, Redpath, F W, Smith, K, Jennings, S, Walton   +5 more
openaire   +2 more sources

Impaired Windkessel function and proximal aortic stiffness: Linking vascular ageing to cognitive decline

Experimental Physiology, EarlyView.
Abstract Central arterial stiffening, particularly of the proximal aorta, is increasingly recognised as a pivotal contributor to cardiovascular disease, dementia, and mild cognitive impairment. Loss of Windkessel function amplifies pulsatile pressure, reduces diastolic perfusion and accelerates microvascular damage in the brain.
Jun Sugawara, Hirofumi Tanaka
wiley   +1 more source

α‐Adrenergic blockade impairs ductus venosus shunting during an acute period of fetal hypoxaemia without further deficits to cerebral oxygen delivery

Experimental Physiology, EarlyView.
Abstract The fetal circulation has unique shunts, including the ductus venosus (DV), the tone of which dictates how much substrate‐rich blood returning from the placenta is streamed preferentially away from the liver and instead towards the heart. Herein, we aimed to use clinically relevant MRI techniques in sheep to measure indirectly induced changes ...
Jack R. T. Darby, Stacey L. Holman, Brahmdeep S. Saini, Sunthara Rajan Perumal, Mike Seed, Christopher K. Macgowan, Janna L. Morrison   +6 more
wiley   +1 more source

Reliability of landmark identification for analysis of the temporomandibular joint in real-time MRI

Head & Face Medicine
Background Real-time magnetic resonance imaging (rtMRI) is essential for diagnosing and comprehending temporomandibular joint (TMJ) movements. Current methods for tracking and analysis require manual landmark placement on each acquisition frame ...
Jérémy Mouchoux, Philipp Meyer-Marcotty, Florian Sojka, Peter Dechent, Daniela Klenke, Bernhard Wiechens, Anja Quast   +6 more
doaj   +1 more source

Quantificação da massa infartada do ventrículo esquerdo pela ressonância magnética cardíaca: comparação entre a planimetria e o método de escore visual semi-quantitativo Quantification of left ventricular infarcted mass on cardiac magnetic resonance imaging: comparison between planimetry and the semiquantitative visual scoring method

Arquivos Brasileiros de Cardiologia, 2004
OBJETIVO: Validar um novo método de escore visual semi-quantitativo contra a planimetria digital quantitativa para a determinação da massa infartada do ventrículo esquerdo pela ressonância magnética cardíaca com técnica de realce tardio.
Clerio Francisco de Azevedo Filho, Marcelo Hadlich, João Luiz Fernandes Petriz, Luís Antonio Mendonça, Jorge Neval Moll Filho, Carlos Eduardo Rochitte   +5 more
doaj   +1 more source

Cine magnetic resonance imaging of pulsatile cerebrospinal fluid flow using CSPAMM

The British Journal of Radiology, 1994
Abstract Spatial modulation of magnetization (SPAMM) is a well established imaging technique which superimposes a tagging pattern on conventional magnetic resonance (MR) images, allowing movement to be visualized. A modification to the SPAMM technique, called complementary spatial modulation of magnetization (CSPAMM), which improves the ...
S C, Wayte, T W, Redpath
openaire   +2 more sources

Fetal glucose availability: a key regulator of the metabolic, hormonal and contractility profiles of the fetal sheep heart

The Journal of Physiology, EarlyView.
Abstract figure legend To investigate the role of glucose availability in fetal left ventricle (LV) development, this study assessed whether maternal late gestation undernutrition (LGUN; 50% of Control diet) induced alterations in the contractility, metabolic, and hormonal profile can be ameliorated in LGUN fetuses receiving glucose infusion (LGUN+G ...
Melanie R. Bertossa, Jack R. T. Darby, Stacey L. Holman, Steven K. S. Cho, Ashley S. Meakin, Mitchell C. Lock, Jordan A. Minns, Michael D. Wiese, Christopher K. Macgowan, Mike Seed, Janna L. Morrison   +10 more
wiley   +1 more source

Real-time cine and myocardial perfusion with treadmill exercise stress cardiovascular magnetic resonance in patients referred for stress SPECT

Journal of Cardiovascular Magnetic Resonance, 2010
Background To date, stress cardiovascular magnetic resonance (CMR) has relied on pharmacologic agents, and therefore lacked the physiologic information available only with exercise stress.
Raman Subha V, Dickerson Jennifer A, Jekic Mihaela, Foster Eric L, Pennell Michael L, McCarthy Beth, Simonetti Orlando P   +6 more
doaj   +1 more source