Evaluation of contact pressure in human vocal folds during phonation using high-speed videoendoscopy, electroglottography, and magnetic resonance imaging

2013 ◽  
Vol 133 (5) ◽  
pp. 3618-3618
Author(s):  
Zhe Li ◽  
Hani Bakhshaee ◽  
Leah Helou ◽  
Luc Mongeau ◽  
Karen Kost ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Contact Pressure ◽  
High Speed ◽  
Vocal Folds ◽  
Resonance Imaging

Functional Studies of the Human Brain Using High-speed Magnetic Resonance Imaging

1991 ◽  
Vol 1 (1) ◽  
pp. 36-41 ◽  
Author(s):  
John W. Belliveau ◽  
Mark S. Cohen ◽  
Robert M. Weisskoff ◽  
Bradley R. Buchbinder ◽  
Bruce R. Rosen
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Human Brain ◽  
High Speed ◽  
Resonance Imaging ◽  
Functional Studies

Application of High-Speed T1 Sequences for High-Quality Hepatic Arterial Phase Magnetic Resonance Imaging

2017 ◽  
Vol 52 (10) ◽  
pp. 605-611 ◽  
Author(s):  
Yang Shin Park ◽  
Chang Hee Lee ◽  
Jeong Woo Kim ◽  
Young-Sun Lee ◽  
MunYoung Paek ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Speed ◽  
Arterial Phase ◽  
Resonance Imaging ◽  
High Quality ◽  
Hepatic Arterial Phase

scholarly journals Magnetic Resonance Imaging Assessment of Cerebral Hemodynamics during Spreading Depression in Rats

1998 ◽  
Vol 18 (9) ◽  
pp. 1008-1017 ◽  
Author(s):  
Alexander de Crespigny ◽  
Joachim Röther ◽  
Nick van Bruggen ◽  
Christian Beaulieu ◽  
Michael E. Moseley
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Potassium Chloride ◽  
Energy Demand ◽  
High Speed ◽  
Spreading Depression ◽  
Cerebral Blood Volume ◽  
Initial Increase ◽  
Resonance Imaging ◽  
Dc Potential

High-speed magnetic resonance imaging was used to perform simultaneous measurements of relative cerebral blood volume (rCBV) and water diffusion changes during spreading depression (SD) induced by cortical potassium chloride application. Rats were fitted epidurally with a rubber chamber. Potassium chloride was perfused through the chamber until SD was indicated by a negative direct current (DC) potential shift. Magnetic resonance imaging scans used echo planar diffusion and T2-weighted images. Iron dextran was injected as a blood pool contrast agent to make subsequent changes in T2 (or T2*) directly proportional to changes in CBV. Multislice maps of apparent diffusion coefficient (ADC) and rCBV were generated with 6- to 16-second time resolution, which revealed transient ADC and rCBV changes propagating over the cortex after potassium chloride application. Transient ADC declines appeared simultaneously with the DC shift, whereas rCBV increase followed with a delay of 16.4 ± 14.9 seconds. Prolonged rCBV decrease was observed after the initial increase during the SD in half of the animals. The delayed rCBV response after the ADC change supports the observation of increased energy demand because of repolarization. Simultaneous DC potential recording and ADC measurements in corresponding sites of the cortex indicate that transient ADC decreases during SD reflect water shifts associated with cell depolarization.

scholarly journals Dynamic mapping of the human visual cortex by high-speed magnetic resonance imaging.

1992 ◽  
Vol 89 (22) ◽  
pp. 11069-11073 ◽  
Author(s):  
A. M. Blamire ◽  
S. Ogawa ◽  
K. Ugurbil ◽  
D. Rothman ◽  
G. McCarthy ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Visual Cortex ◽  
Magnetic Resonance ◽  
High Speed ◽  
Resonance Imaging ◽  
Human Visual Cortex ◽  
Dynamic Mapping
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