Bilateral Difference in Tympanic Temperatures Reflects that in Brain Temperature

1994 ◽  
pp. 127-131 ◽  
Author(s):  
Tokuo Ogawa ◽  
Junichi Sugenoya ◽  
Norikazu Ohnishi ◽  
Kazuno Imai ◽  
Takae Umeyama ◽  
...  
Keyword(s):  
Brain Temperature ◽  
Bilateral Difference

scholarly journals Brain Temperature Measured by Magnetic Resonance Spectroscopy to Predict Clinical Outcome in Patients with Infarction

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 490
Author(s):  
Tomohisa Ishida ◽  
Takashi Inoue ◽  
Tomoo Inoue ◽  
Toshiki Endo ◽  
Miki Fujimura ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Mr Spectroscopy ◽  
Internal Carotid ◽  
Brain Temperature ◽  
Artery Occlusion ◽  
Carotid Artery Occlusion ◽  
Clinical Settings ◽  
Brain Swelling

Acute ischemic stroke is characterized by dynamic changes in metabolism and hemodynamics, which can affect brain temperature. We used proton magnetic resonance (MR) spectroscopy under everyday clinical settings to measure brain temperature in seven patients with internal carotid artery occlusion to explore the relationship between lesion temperature and clinical course. Regions of interest were selected in the infarct area and the corresponding contralateral region. Single-voxel MR spectroscopy was performed using the following parameters: 2000-ms repetition time, 144-ms echo time, and 128 excitations. Brain temperature was calculated from the chemical shift between water and N-acetyl aspartate, choline-containing compounds, or creatine phosphate. Within 48 h of onset, compared with the contralateral region temperature, brain temperature in the ischemic lesion was lower in five patients and higher in two patients. Severe brain swelling occurred subsequently in three of the five patients with lower lesion temperatures, but in neither of the two patients with higher lesion temperatures. The use of proton MR spectroscopy to measure brain temperature in patients with internal carotid artery occlusion may predict brain swelling and subsequent motor deficits, allowing for more effective early surgical intervention. Moreover, our methodology allows for MR spectroscopy to be used in everyday clinical settings.

scholarly journals Brain Temperature Measured Using Proton MR Spectroscopy Detects Cerebral Hemodynamic Impairment in Patients With Unilateral Chronic Major Cerebral Artery Steno-Occlusive Disease

Stroke ◽  
2009 ◽  
Vol 40 (9) ◽  
pp. 3012-3016 ◽  
Author(s):  
Daiya Ishigaki ◽  
Kuniaki Ogasawara ◽  
Yoshichika Yoshioka ◽  
Kohei Chida ◽  
Makoto Sasaki ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Mr Spectroscopy ◽  
Brain Temperature ◽  
Occlusive Disease ◽  
Proton Mr Spectroscopy ◽  
Cerebral Hemodynamic ◽  
Hemodynamic Impairment

scholarly journals Brain-derived neurotrophic factor enhances spontaneous sleep in rats and rabbits

1999 ◽  
Vol 276 (5) ◽  
pp. R1334-R1338 ◽  
Author(s):  
Tetsuya Kushikata ◽  
Jidong Fang ◽  
James M. Krueger
Keyword(s):  
Growth Factors ◽  
Neurotrophic Factor ◽  
Brain Temperature ◽  
Brain Derived Neurotrophic Factor ◽  
Normal Brain ◽  
Sprague Dawley ◽  
Sleep Regulation ◽  
Bdnf Mrna ◽  
Sprague Dawley Rats ◽  
Intracerebroventricular Injections

Various growth factors are involved in sleep regulation. Brain-derived neurotrophic factor (BDNF) belongs to the neurotrophin family; it and its receptors are found in normal brain. Furthermore, cerebral cortical levels of BDNF mRNA have a diurnal variation and increase after sleep deprivation. Therefore, we investigated whether BDNF would promote sleep. Twenty-four male Sprague-Dawley rats (320–380 g) and 25 male New Zealand White rabbits (4.5–5.5 kg) were surgically implanted with electroencephalographic (EEG) electrodes, a brain thermistor, and a lateral intracerebroventricular cannula. The animals were injected intracerebroventricularly with pyrogen-free saline and, on a separate day, one of the following doses of BDNF: 25 or 250 ng in rabbits; 10, 50, or 250 ng in rats. The EEG, brain temperature, and motor activity were recorded for 23 h after the intracerebroventricular injections. BDNF increased time spent in non-rapid eye movement sleep (NREMS) in rats and rabbits and REMS in rabbits. Current results provide further evidence that various growth factors are involved in sleep regulation.

scholarly journals Non-Invasive Measurement of Brain Temperature with Microwave Radiometry: Demonstration in a Head Phantom and Clinical Case

2014 ◽  
Vol 27 (1) ◽  
pp. 3-12 ◽  
Author(s):  
Paul R. Stauffer ◽  
Brent W. Snow ◽  
Dario B. Rodrigues ◽  
Sara Salahi ◽  
Tiago R. Oliveira ◽  
...  
Keyword(s):  
Clinical Case ◽  
Brain Temperature ◽  
Microwave Radiometry ◽  
Non Invasive ◽  
Invasive Measurement

CHANGES IN BRAIN TEMPERATURE DURING FORCED-AIR CONVECTION COOLING OF PRIMATES

1996 ◽  
Vol 8 (4) ◽  
pp. 331
Author(s):  
P Isert ◽  
A Stewart ◽  
L Sekhon ◽  
M Crawford
Keyword(s):  
Brain Temperature ◽  
Air Convection ◽  
Convection Cooling ◽  
Forced Air

scholarly journals Dual role of cerebral blood flow in regional brain temperature control in the healthy newborn infant

2014 ◽  
Vol 37 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Sachiko Iwata ◽  
Ilias Tachtsidis ◽  
Sachio Takashima ◽  
Toyojiro Matsuishi ◽  
Nicola J. Robertson ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Newborn Infant ◽  
Temperature Control ◽  
Brain Temperature ◽  
Dual Role ◽  
Healthy Newborn ◽  
Regional Brain
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