Herein we describe the technique of CT-guided lumbar or thoracic bone biopsy performed with a larger bore needle and coaxial system. The use of the external sheath cannula as a coaxial system led to an accurate diagnosis in all 19 patients who underwent the procedure. Bleeding at the biopsy site occurred in two patients and was controlled by insertion of Gelfoam. No other complications were enc...

The cavity of a particular electron accelerator is analysed thanks to boundary integral equations. Electrons are accelerated several times in the median plane of a single coaxial cavity resonating on its fundamental TEMj mode. The geometry of the conductors is modified to improve the shunt impedance. The proper frequency of the new resonator is calculated thanks to Green's function associated t...

Media Over Coaxial Alliance (MoCA) is a protocol encapsulating Ethernet protocols over coaxial cabling common to interior television wiring. Previous work discussed the vulnerabilities presented by common implementations of the protocol. In this paper, these vulnerabilities are realized with the development of Raspberry MoCA, an embedded device that provides a drop-in, automated exploitation ki...

− This paper describes the development of a four-terminal coaxial bridge, part of the traceability chain of the capacitance unit to the quantum Hall effect, in construction at Inmetro. This bridge will also be used to calibrate AC resistance and high-value capacitance standards. Here we describe the final construction stages and preliminary measurements of the four-terminal coaxial bridge. We a...

An infinitely flanged coaxial line is analytically solved with the mode-matching technique and Green’s function to propose a precise yet fast-convergent scattering solution for complex permittivity measurement. Based on virtual current cancelation, we formulate the open half-space fields in terms of coaxial modes and related Green’s functions and thus obtain the simultaneous equations with rapi...

—On HFC cable networks, in order to develop a realtime game application, we face a design problem to efficiently transmit packets with reliability. This paper introduces the SCRA (server-based collision resolution and avoidance) scheme. SCRA is a reliable transport method using UDP for real-time applications on HFC networks. In this design, we first analyze the collision probability, and estima...

Usingjnmdtfiiax cable (coaxial cable with additional coaxial shields, ihssil~t@cd from each other), techniques are discussed which allmwa@muthaY distribution of the signal input positions around a Ensppst.rructure. Also discussed are uses of this kind of multiax cab3e:’:structure for multi-turn loops. In some cases there are Wppcmvements in ttie performance of loops (for measurinq the mazgwtt~c...

This paper presents coaxial feed rectangular microstrip patch antenna. A narrow Lshaped microstrip antenna is fed at the corner using a coaxial feed to obtain a LP operation. Experiments are carriedout to investigate its return loss, its radiation and its time domain behavior, which exhibit good radiation pattern. The simple rectangular and compact L-shaped microstrip antenna is simulated with ...

A quasi-static analysis of an open-ended coaxial line terminated by a semi-infinite medium on ground plane is presented in this paper. The analysis is based on a vtiriation formulation of the problem. A comparison of results obtained by this method with the experimental and the other theoretical approaches shows an excellent agreement. This analysis is expected to be helpful in the inverse prob...