A robust method for suppressing motion-induced coil sensitivity variations during prospective correction of head motion in fMRI

2016 ◽  
Vol 34 (8) ◽  
pp. 1206-1219 ◽  
Author(s):  
Zahra Faraji-Dana ◽  
Fred Tam ◽  
J. Jean Chen ◽  
Simon J. Graham
Keyword(s):  
Head Motion ◽  
Coil Sensitivity ◽  
Robust Method

Interactions between head motion and coil sensitivity in accelerated fMRI

2016 ◽  
Vol 270 ◽  
pp. 46-60 ◽  
Author(s):  
Z. Faraji-Dana ◽  
F. Tam ◽  
J.J. Chen ◽  
S.J. Graham
Keyword(s):  
Head Motion ◽  
Coil Sensitivity

fMRI Simulator Training to Suppress Head Motion

2016 ◽  
Vol 4 (2) ◽  
pp. 96-103 ◽  
Author(s):  
S. J. Graham ◽  
S. Ranieri ◽  
S. Boe ◽  
J. E. Ween ◽  
F. Tam ◽  
...  
Keyword(s):  
Simulator Training ◽  
Head Motion

A Simplified Protocol for the Stereospecific Nickel-Catalyzed C–S Vinylation Using NiX2 Salts and Alkyl Phosphites

Synthesis ◽  
2019 ◽  
Vol 52 (02) ◽  
pp. 311-319
Author(s):  
Austin D. Marchese ◽  
Bijan Mirabi ◽  
Egor M. Larin ◽  
Mark Lautens
Keyword(s):  
Cross Coupling ◽  
Robust Method ◽  
Alkyl Phosphites

A Ni-catalyzed C–S cross-coupling using only NiI2 (0.5–2.5 mol%) and P(OiPr)3 (2.0–10.0 mol%) is reported. Using an air-stable Ni(II) precatalyst, and a cheap and commercially available ligand, a scalable and robust method was developed to cross-couple various thiophenols and styryl bromides, including some sterically encumbered thiols, an α-bromocinnamaldehyde as well as a thiolation-cyclization.

A Critical, Event-Related Appraisal of Denoising in Resting-State fMRI Studies

2020 ◽  
Vol 30 (10) ◽  
pp. 5544-5559 ◽  
Author(s):  
Jonathan D Power ◽  
Charles J Lynch ◽  
Babatunde Adeyemo ◽  
Steven E Petersen
Keyword(s):  
Resting State ◽  
Resting State Fmri ◽  
Critical Event ◽  
Head Motion ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Decay Properties ◽  
Signal Decay ◽  
Biological Variables ◽  
Related Approach

Abstract This article advances two parallel lines of argument about resting-state functional magnetic resonance imaging (fMRI) signals, one empirical and one conceptual. The empirical line creates a four-part organization of the text: (1) head motion and respiration commonly cause distinct, major, unwanted influences (artifacts) in fMRI signals; (2) head motion and respiratory changes are, confoundingly, both related to psychological and clinical and biological variables of interest; (3) many fMRI denoising strategies fail to identify and remove one or the other kind of artifact; and (4) unremoved artifact, due to correlations of artifacts with variables of interest, renders studies susceptible to identifying variance of noninterest as variance of interest. Arising from these empirical observations is a conceptual argument: that an event-related approach to task-free scans, targeting common behaviors during scanning, enables fundamental distinctions among the kinds of signals present in the data, information which is vital to understanding the effects of denoising procedures. This event-related perspective permits statements like “Event X is associated with signals A, B, and C, each with particular spatial, temporal, and signal decay properties”. Denoising approaches can then be tailored, via performance in known events, to permit or suppress certain kinds of signals based on their desirability.

scholarly journals Individual Differences in Impulsivity Predict Head Motion during Magnetic Resonance Imaging

PLoS ONE ◽  
2014 ◽  
Vol 9 (8) ◽  
pp. e104989 ◽  
Author(s):  
Xiang-zhen Kong ◽  
Zonglei Zhen ◽  
Xueting Li ◽  
Huan-hua Lu ◽  
Ruosi Wang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Individual Differences ◽  
Magnetic Resonance ◽  
Head Motion ◽  
Resonance Imaging

Quantifying the psychopathic stare: Automated assessment of head motion is related to antisocial traits in forensic interviews

2021 ◽  
pp. 104093
Author(s):  
Aparna R. Gullapalli ◽  
Nathaniel E. Anderson ◽  
Rohit Yerramsetty ◽  
Carla L. Harenski ◽  
Kent A. Kiehl
Keyword(s):  
Head Motion ◽  
Automated Assessment ◽  
Forensic Interviews

scholarly journals A unified evaluation framework for head motion prediction methods in 360° videos

2020 ◽  
Author(s):  
Miguel Fabián Romero Rondón ◽  
Lucile Sassatelli ◽  
Ramón Aparicio-Pardo ◽  
Frédéric Precioso
Keyword(s):  
Evaluation Framework ◽  
Motion Prediction ◽  
Head Motion ◽  
Prediction Methods

scholarly journals Patch antenna sensor for wireless ice and frost detection

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ryan Kozak ◽  
Kasra Khorsand ◽  
Telnaz Zarifi ◽  
Kevin Golovin ◽  
Mohammad H. Zarifi
Keyword(s):  
Resonant Frequency ◽  
Patch Antenna ◽  
Wide Band ◽  
Power Lines ◽  
Ice Thickness ◽  
Ice Accretion ◽  
Robust Method ◽  
Frequency Shifts ◽  
Resonant Amplitude ◽  
Recorded Data

AbstractA patch antenna sensor with T-shaped slots operating at 2.378 GHz was developed and investigated for wireless ice and frost detection applications. Detection was performed by monitoring the resonant amplitude and resonant frequency of the transmission coefficient between the antenna sensor and a wide band receiver. This sensor was capable of distinguishing between frost, ice, and water with total shifts in resonant frequency of 32 MHz and 36 MHz in the presence of frost and ice, respectively, when compared to the bare sensor. Additionally, the antenna was sensitive to both ice thickness and the surface area covered in ice displaying resonant frequency shifts of 2 MHz and 8 MHz respectively between 80 and 160 μL of ice. By fitting an exponential function to the recorded data, the freezing rate was also extracted. The analysis within this work distinguishes the antenna sensor as a highly accurate and robust method for wireless ice accretion detection and monitoring. This technology has applications in a variety of industries including the energy sector for detection of ice on wind turbines and power lines.

641 What Is the Most Reliable Way to Secure A Surgical Drain?

2021 ◽  
Vol 108 (Supplement_2) ◽  
Author(s):  
B Hughes ◽  
J Stallard ◽  
S Jivan
Keyword(s):  
Suture Material ◽  
Suture Techniques ◽  
Robust Method ◽  
Suturing Technique ◽  
The Moment ◽  
Tissue Reactions ◽  
Surgical Drain

Abstract Introduction Surgical drains are used by many specialities, we aim to determine the most robust method of securing them by comparing suturing technique, material and fixation angle. Method A Blake’s drain was inserted into a piece of pork belly and secured using a standard ‘three half hitch’ technique with 3.0 Silk, EthilonTM and ProleneTM . For each suture type, drains were sutured in line, at 45 and 90 degrees to the course of the drain. The force needed for the suture to failure was measured and each repeated 3 times. Different suture techniques were then used to determine the strongest fixation. Results With the drain exiting inline the moment of failure was, on average, 1.25kg for silk, 3.5kg for EthilonTM and 4.0kg for ProleneTM. Increasing drain fixation angle required more force for the suture to fail. With EthilonTM and ProleneTM, the suture snapped before the drain slipped. Three half hitches was the strongest technique. Conclusions Suture material, technique and drain fixation angle had an impact on suture strength with ProleneTM outperforming Silk. We advocate using a ‘three half hitch’ technique with 3.0 ProleneTM to secure a surgical drain. It offers superior strength whilst reducing the risk of localised tissue reactions.

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