Detachable latex balloons, preloaded coaxially in 4-F angiographic catheters, were used in eight patients, aged 6 weeks to 12 years. Successful placement of the balloon was achieved in six patients, in whom the feeding arteries arose in an oblique fashion from the aorta or main conducting arteries. Placement was not possible in two patients. No femoral or axillary arterial occlusions occurred as a result of these procedures. The balloon can be inflated up to 8 mm in diameter, passes readily through a 4-F introducer sheath, and can be retrieved, without detachment from the catheter, through the same sheath. A hemostatic side-arm adapter attached to the catheter permits angiography to be performed before balloon detachment. The disadvantages of the system include preparation time to hand tie the balloons, the operator experience required, and difficulty in navigating the balloon.
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http://dx.doi.org/10.1148/radiology.170.3.2916059 | DOI Listing |
Polymers (Basel)
September 2024
School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China.
The application of binary gas mixtures consisting of heptafluorobutyronitrile (CFN) and carbon dioxide (CO) in AC GIS is currently attracting much attention. Therefore, the evaluation of the gas-solid interface charge distribution characteristics of epoxy resin is indispensable. Additionally, the phase-dependency of the charging behavior remains not fully understood.
View Article and Find Full Text PDFInterv Neuroradiol
December 2020
Department of Neurosurgery, Faculty of Medicine, Mie University Graduate School of Medicine, Mie, Japan.
Background: It is often hard to navigate a 9 French (F) balloon guiding catheter in patients with type III or bovine aortic arch. Also, a common carotid artery stenosis is challenging, because a guidewire cannot be advanced distally. We developed the combination of a 4F Simmons-type catheter and a 6F distal access catheter as a coaxial inner catheter to navigate a 9F balloon guiding catheter to overcome these difficulties.
View Article and Find Full Text PDFActa Radiol Open
December 2018
Department of Radiology, Kochi University, Kochi Medical School Kohasu, Oko-cho, Nankoku, Kochi, Japan.
Acta Cardiol
August 2017
a Fetal and Pediatric Cardiology , University Hospitals Leuven, Belgium.
Objective The aim of the study was to assess the feasibility of using commonly available catheterization laboratory equipment for radiofrequency perforation of the pulmonary valve in patients with pulmonary atresia and intact ventricular septum. Methods The system (off-label use for all items) is made up of a co-axial telescopic arrangement consisting of a 0.014" PT 2 ™ coronary guidewire, for insulation inside a 2.
View Article and Find Full Text PDFWe propose and experimentally demonstrate the complete and simultaneous modulation of the amplitude, phase and arbitrary state of polarization of optical beams. Based on a 4-f system including a spatial light modulator (SLM), two orthogonally polarized beams serving as the base vector components are produced by a computer generated hologram. The complex amplitude of orthogonal components is realized by a macro-pixel encoding technique purposely designed for phase-only SLMs.
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