Results 71 to 80 of about 15,545,791 (242)

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Modeling of arterial stiffness using variations of pulse transit time

Computer Science and Information Systems, 2013
In this paper, a finite element (FE) modeling is used to model effects of the arterial stiffness on the different signal patterns of the pulse transit time (PTT). Several different breathing patterns of the three subjects are measured with PTT signal and corresponding finite element model of the straight elastic artery is applied.
Aleksandar Peulic, Natasa Milojevic, Emil Jovanov, Milos D. Radovic, Igor Saveljic, Nebojsa Zdravkovic, Nenad Filipovic   +6 more
openaire   +4 more sources

Natural Frequencies of Levodopa‐Induced Dyskinesia in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Ioannis U. Isaias, Federica Avantaggiato, Gianni Pezzoli, Andrea Canessa   +3 more
wiley   +1 more source

P6.22 A NOVEL DEVICE FOR MEASURING ARTERIAL STIFFNESS USING THE FINGER-TOE PULSE WAVE VELOCITY: VALIDATION STUDY OF THE POPMÈTRE®

Artery Research, 2013
Background: Finger-toe pathway could represent a good alternative to assess the arterial stiffness conveniently. The aim of this study is to evaluate the accuracy of the pOpmètre which measures finger-toe pulse wave velocity (ft-PWV).
P.T. Vo-Duc, V. Vignon, E. Bozec, H. Khettab, O. Hanon, M. Hallab, P. Boutouyrie, S. Laurent   +7 more
doaj   +1 more source

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

Leg crossing posture on pulse transit time and heart rate variability [PDF]

, 2010
[[abstract]]This study Investigates the leg crossing effect originated from meditation. We use pulse transit time as index for this study. Pulse transit time is measured form the time Interval between ECG R peak position and the corresponding pulse peak.
Chang, Kang-Ming ; Chang, Keng-Ming, Kang-Ming Chang ; Keng-Ming Chang   +1 more
core   +1 more source

Boundary‐Dependent Sleep–Wake Dysregulation in Idiopathic Hypersomnia

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Idiopathic hypersomnia (IH) presents with excessive daytime sleepiness (EDS) despite apparently preserved nocturnal sleep, challenging traditional models of hypersomnolence based on sleep loss or fragmentation. We aimed to test the hypothesis that EDS in IH reflects excessive stabilization of the sleep state, consistent with ...
Samantha Mombelli, Karine Lacourse, Hélène Blais, Anne‐Sophie Deshaies‐Rugama, Cynthia Thompson, Alex Desautels, Jacques Montplaisir, Milan Nigam, Christophe Moderie, Boshra Khajehpiri, Catherine Duclos, Jean Marc Lina, Julie Carrier, Nadia Gosselin   +13 more
wiley   +1 more source

Transit-Oriented Development (TOD) and Employment

, 2011
In a white paper entitled “Transit-Oriented Development and Employment,” CTOD discusses the relationship between transit and job concentrations and explains the importance of the destination side of the trip for both transit operations and land-use ...
Center for Transit-Oriented Development
core   +2 more sources

Measuring multi-site pulse transit time with an AI-enabled mmWave radar

Nature Communications
Pulse Transit Time (PTT) is a measure of arterial stiffness and a physiological marker associated with cardiovascular function, with an inverse relationship to diastolic blood pressure (DBP).
Jiangyifei Zhu, Kuang Yuan, Akarsh Prabhakara, Yunzhi Li, Gongwei Wang, Kelly Michaelsen, Justin Chan, Swarun Kumar   +7 more
doaj   +1 more source

Relationship between HsCRP and Pulse Transit Time

Journal of Life Science, 2007
The purpose of this study is to evaluate the relationship between high sensitive C-reactive protein (hsCRP) and pulse transit time (PPT). Apparently healthy 233 subjects had been enrolled in the health promotion center of the Pusan National University Hospital from Jan. 29 to Feb. 26, 2004.
Yun-Jin Kim, Hong-Gi Min, Young-Joo Kim, Ah-Young Jeon, Gye-Rok Jeon, Soo-Young Ye   +5 more
openaire   +2 more sources