scholarly journals Chronic Occupational Exposure to Organic Solvents and Magnetic Resonance Signal Changes in the Brain White Matter —A Case Report—

2000 ◽  
Vol 42 (1) ◽  
pp. 47-49
Author(s):  
Michihiro Kamijima ◽  
Eiji Shibata ◽  
Hisashi Tanaka ◽  
Gaku Ichihara ◽  
Yasuhiro Takeuchi
Keyword(s):  
Case Report ◽  
White Matter ◽  
Magnetic Resonance ◽  
Occupational Exposure ◽  
Organic Solvents ◽  
Magnetic Resonance Signal ◽  
Resonance Signal ◽  
Brain White Matter ◽  
Signal Changes ◽  
The Brain

Quantification of the magnetic resonance signal response to dynamic (C)O2-enhanced imaging in the brain at 3 T: R*2 BOLD vs. balanced SSFP

2010 ◽  
Vol 31 (6) ◽  
pp. 1300-1310 ◽  
Author(s):  
Stefanie Remmele ◽  
Hannes Dahnke ◽  
Sebastian Flacke ◽  
Martin Soehle ◽  
Ingobert Wenningmann ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Signal ◽  
Resonance Signal ◽  
Balanced Ssfp ◽  
Signal Response ◽  
The Brain ◽  
Enhanced Imaging

MAGNETIC RESONANCE SIGNAL CHANGES DURING TIME IN EQUINE LIMBS REFRIGERATED AT 4°C

2010 ◽  
Vol 51 (1) ◽  
pp. 19-24 ◽  
Author(s):  
GÉRALDINE BOLEN ◽  
DIMITRI HAYE ◽  
ROBERT DONDELINGER ◽  
VALERIA BUSONI
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Signal ◽  
Resonance Signal ◽  
Signal Changes

Rotavirus encephalitis and cerebellitis with reversible magnetic resonance signal changes

2011 ◽  
Vol 53 (2) ◽  
pp. 252-255 ◽  
Author(s):  
Toshihiko Mori ◽  
Mayuko Morii ◽  
Yuki Kuroiwa ◽  
Tomoyuki Hotsubo ◽  
Shigeto Fuse ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Signal ◽  
Resonance Signal ◽  
Signal Changes

Magnetic resonance signal intensity ratio of gray/white matter in children

1993 ◽  
Vol 15 (3) ◽  
pp. 198-204 ◽  
Author(s):  
Mariko Maezawa ◽  
Tohru Seki ◽  
Soichi Imura ◽  
Kazunori Akiyama ◽  
Itsuro Takikawa ◽  
...  
Keyword(s):  
White Matter ◽  
Magnetic Resonance ◽  
Signal Intensity ◽  
Intensity Ratio ◽  
Signal Intensity Ratio ◽  
Magnetic Resonance Signal ◽  
Resonance Signal

scholarly journals Cerebrovascular Reactivity in the Brain White Matter: Magnitude, Temporal Characteristics, and Age Effects

2013 ◽  
Vol 34 (2) ◽  
pp. 242-247 ◽  
Author(s):  
Binu P Thomas ◽  
Peiying Liu ◽  
Denise C Park ◽  
Matthias JP van Osch ◽  
Hanzhang Lu
Keyword(s):  
White Matter ◽  
Magnetic Resonance ◽  
Structural Characteristics ◽  
Blood Oxygenation ◽  
Cerebrovascular Reactivity ◽  
Tissue Ischemia ◽  
Brain White Matter ◽  
Oxygenation Level ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

White matter (WM) comprises about half of the brain and its dysfunction is implicated in many brain disorders. While structural properties in healthy and diseased WM have been extensively studied, relatively little is known about the physiology underlying these structural characteristics. Recent advances in magnetic resonance (MR) technologies provided new opportunities to better understand perfusion and microvasculature in the WM. Here, we aim to evaluate vasodilatory capacity of the WM vasculature, which is thought to be important in tissue ischemia and autoregulation. Fifteen younger and fifteen older subjects performed a CO2 inhalation task while blood-oxygenation-level-dependent (BOLD) magnetic resonance imaging (MRI) images were continuously collected. The cerebrovascular reactivity (CVR) index showed that the value of CVR in the WM (0.03±0.002%/mm Hg) was positive, but was significantly lower than that in the gray matter (GM) (0.22±0.01%/mm Hg). More strikingly, the WM response showed a temporal delay of 19±3 seconds compared with GM, which was attributed to the longer time it takes for extravascular CO2 to change. With age, WM CVR response becomes greater and faster, which is opposite to the changes seen in the GM. These data suggest that characteristics of WM CVR are different from that of GM and caution should be used when interpreting pathologic WM CVR results.

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