A Low-Profile Flow Sensing System for Monitoring of Cerebrospinal Fluid with a New Ventriculoamniotic Shunt

Author(s):  
Yanfei Chen ◽  
Connor Howe ◽  
Stephen Emery ◽  
Stephanie Greene ◽  
Puneeth Shridhar ◽  
...  
2020 ◽  
pp. 159101992096188
Author(s):  
Mario Martínez-Galdámez ◽  
Miguel Schüller-Arteaga ◽  
Jorge Galván-Fernández ◽  
Vladimir Kalousek ◽  
Ezequiel Petra ◽  
...  

Flow diverter devices have become a routine first-line option for treatment of an increasing population of intracranial aneurysms at many neurovascular centers.  Despite the promising results of flow diverter stents on anterior circulation, incomplete occlusion on the presence of fetal posterior circulation has been described on several reports.  Here we describe a novel technical alternative to conventional flow diversion approach for this specific subgroup of aneurysms using the low-profile flow diverter, Silk Vista Baby. The device was selectively placed into the fetal type posterior cerebral artery in half-T configuration for the treatment of a posterior communicating aneurysm using a transcirculation approach through the anterior communicating artery. This represents a useful and effective technique and should be considered when encountering the above-described situation.


2015 ◽  
Vol 2 (2) ◽  
pp. 71-84 ◽  
Author(s):  
Yanfei Chen ◽  
Brian T. Jankowitz ◽  
Sung Kwon Cho ◽  
Woon-Hong Yeo ◽  
Youngjae Chun

Author(s):  
Ryan E. Reinke ◽  
Harry Dankowicz

This paper discusses the development of a method for on-the-fly, self-calibration of a mass-flow sensing system on a harvest combine in order to enable accurate mass-flow sensing and, consequently, yield mapping, under varying input conditions, for example due to changes in the moisture content of harvested grains or the aging of elevator paddles. The proposed method relies on a known or estimated physics-based relationship between the grain dynamics through the grain elevator and a measured force imparted on an impact plate through collisions with the grains. The paper provides a summary description of the modeled relationship between the rate of mass flow and impact-plate sensor readout and conceptualizes the self-calibration scheme through the introduction of an additional, controllable, degree of freedom of the plate. The validity of the self-calibration technique is illustrated through off-line application to bench-top and full-scale experimental test data.


2019 ◽  
Vol 7 ◽  
pp. 418-425
Author(s):  
Roberto Guarino ◽  
Gabriele Greco ◽  
Barbara Mazzolai ◽  
Nicola M. Pugno

1998 ◽  
Vol 372 (3) ◽  
pp. 357-363 ◽  
Author(s):  
Wei Qin ◽  
Zhujun Zhang ◽  
Baoxin Li ◽  
Shuna Liu

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