12 Result(s)

Article

17 Relationship Between Cerebral Oxygen Delivery, Cerebral Metabolic Rate and the Mean Cerebral Oxygen Saturation in Preterm Infants

BACKGROUND Ensuring the adequacy of cerebral oxygen delivery to meet metabolic demand is important in the brain orientated care of newborn infants. Spatially resolved near-infrared spectroscopy (SRS) is an opt...

T Austin, T Leung, F Wong, C E Elwell, J Henty, J H Meek, J S Wyatt in Pediatric Research (2005)

Article

16 Three Dimensional Optical Imaging of Neonatal Brain Activation

BACKGROUND the ability to assess cerebral function at the cotside is important for our understanding of brain development in the newborn. Existing electrophysiological and optical techniques primarily measure ...

T Austin, A P Gibson, N L Everdell, J C Hebden, M Schweiger… in Pediatric Research (2005)

Article

11 Optical Imaging of The Neonatal Brain

Background: Perinatal brain injury remains an important problem for critically ill newborn infants. Optical methods provide a means of monitoring brain oxygenation safely in an intensive care environment. Informa...

T Austin, J C Hebden, A Gibson, R M Yusof, S R Arridge, J H Meek… in Pediatric Research (2004)

Article

10 Mean Cerebral Oxygen Saturation Increases with Gestational Age in Preterm Infants

Background: Ensuring the adequacy of cerebral oxygen delivery to meet metabolic demand is important in the brain orientated intensive care of preterm infants. Spatially resolved near-infrared spectroscopy allows ...

T Austin, J Henty, J H Meek, C E Elwell, J S Wyatt in Pediatric Research (2004)

Article

Age related characteristics of functionally evoked haemodynamic changes in the infant brain

J H Meek, M A Noone, C E Elwell, M A Firbank, J S Wyatt in Pediatric Research (1998)

Article

Low Cerebral Blood Flow is a Risk Factor for Severe Intraventricular Haemorrhage 162

J H Meek, L T Tyszczuk, J S Wyatt in Pediatric Research (1996)

Article

The Noninvasive Measurement of Absolute Cerebral Deoxyhemoglobin Concentration and Mean Optical Path Length in the Neonatal Brain by Second Derivative Near Infrared Spectroscopy

We have used second differential near infrared spectroscopy of water to determine the mean optical path length of the neonatal brain. By obtaining the ratio of the second differential features of deoxyhemoglob...

C E Cooper, C E Elwell, J H Meek, S J Matcher, J S Wyatt, M Cope… in Pediatric Research (1996)

Article

Oblique Reflexion of Radio Waves by Way of a Triangular Path

FIG. 1 is a vertical incidence record from Baker Lake Ionospheric Station, July 19, 1949, 7.30 a.m. C.S.T. It shows, in addition to the regular h′f sweep, a pair of traces due to propagation by means of a triangu...

J. H. MEEK in Nature (1952)

Article

Triple Splitting of Ionospheric Rays

THE well-known theory of the ionosphere indicates the existence in polar regions of a third split in vertical incidence measurements of medium- and high-frequency radio wave reflexions from the ionosphere, its...

J. H. MEEK in Nature (1948)