A Remote Needle Guidance System for Percutaneous Biopsies

2005 ◽  
Author(s):  
Steven R. H. Barrett ◽  
Nevan Hanumara ◽  
Conor J. Walsh ◽  
Alexander H. Slocum ◽  
Rajiv Gupta ◽  
...  
Keyword(s):  
Guidance System ◽  
Needle Guidance ◽  
Biopsy Needle ◽  
Needle Position ◽  
Cardiac Phantom ◽  
Insertion Tool ◽  
Plastic Parts ◽  
User Friendly ◽  
Disposable Plastic ◽  
Initial Results

This paper describes a teleoperated needle guidance and insertion tool to assist doctors in performing minimally invasive percutaneous biopsies remotely under computed tomography [CT] guidance. Robopsy is a user-friendly robotic device that grips, positions and inserts a biopsy needle while the patient is imaged to provide the radiologist with simultaneous needle position feedback. Patient care is improved through more precise targeting and shortened procedure times. Robopsy is made primarily of simple, lightweight, snap-together, disposable plastic parts and modular motors; contrasting devices are heavy, complex and expensive. It is designed to be taped onto a patient so as to passively compensate for respiratory chest motion and, additionally, it incorporates a novel feature, which compensates for passive needle oscillation. The design process is outlined and the first prototype presented. Initial results from testing on a cardiac phantom indicate that artifacts from the device in the CT images are negligible and that the device can successfully orientate and insert a needle remotely.

Mechanically assisted 3D prostate ultrasound imaging and biopsy needle-guidance system

2010 ◽  
Author(s):  
Jeffrey Bax ◽  
Jackie Williams ◽  
Derek Cool ◽  
Lori Gardi ◽  
Jacques Montreuil ◽  
...  
Keyword(s):  
Ultrasound Imaging ◽  
Guidance System ◽  
Needle Guidance ◽  
Biopsy Needle

A Randomized Crossover Study Comparing a Novel Needle Guidance Technology for Simulated Internal Jugular Vein Cannulation

2015 ◽  
Vol 123 (3) ◽  
pp. 535-541 ◽  
Author(s):  
David B. Auyong ◽  
Stanley C. Yuan ◽  
Alyse N. Rymer ◽  
Cynthia L. Green ◽  
Neil A. Hanson
Keyword(s):  
Carotid Artery ◽  
Crossover Study ◽  
Real Time ◽  
New Technology ◽  
Posterior Wall ◽  
Central Line ◽  
Comfort Level ◽  
Guidance System ◽  
Needle Guidance ◽  
Needle Position

Abstract Background: Despite ultrasound guidance for central line placement, complications persist, as exact needle location is often difficult to confirm with standard two-dimension ultrasound. A novel real-time needle guidance technology has recently become available (eZono, Germany) that tracks the needle during insertion. This randomized, blinded, crossover study examined whether this needle guidance technology improved cannulation of a simulated internal jugular (IJ) vein in an ultrasound phantom. Methods: One hundred physicians were randomized to place a standard needle in an ultrasound neck phantom with or without the needle guidance system. Video cameras were placed externally and within the lumens of the vessels to record needle location in real time. The primary outcome measured was the rate of posterior wall puncture. Secondary outcomes included number of carotid artery punctures, number of needle passes, final needle position, time to cannulation, and comfort level with this new technology. Results: The incidence of posterior vessel wall puncture without and with needle guidance was 49 and 13%, respectively (P < 0.001, odds ratio [OR] = 7.33 [3.44 to 15.61]). The rate of carotid artery puncture was higher without needle navigation technology than with needle navigation 21 versus 2%, respectively (P = 0.001, OR = 12.97 [2.89 to 58.18]). Final needle tip position being located within the lumen of the IJ was 97% accurate with the navigation technology and 76% accurate with standard ultrasound (P < 0.001, OR = 10.42 [2.76 to 40.0]). Average time for successful vessel cannulation was 1.37 times longer without guidance technology. Conclusion: This real-time needle guidance technology (eZono) shows significant improvement in needle accuracy and cannulation time during simulated IJ vein puncture.

Midsurface Abstraction From 3D Solid Models for Engineering Analysis

1996 ◽  
Author(s):  
Mohsen Rezayat
Keyword(s):  
Feature Recognition ◽  
Analysis Model ◽  
Thin Sections ◽  
New Approach ◽  
Solid Models ◽  
Product And Process ◽  
Plastic Parts ◽  
3D Solid ◽  
User Friendly ◽  
Analysis Models

Abstract An integral part of implementing parallel product and process designs is simulation through numerical analysis. This simulation-driven design requires discretization of the 3D part in an appropriate manner. If the part is thin or has thin sections (e.g., plastic parts), then an analysis model with reduced dimensionality may be more accurate and economical than a standard 3D model. In addition, substantial simplification of some details in the design geometry may be beneficial and desirable in the analysis model. Unfortunately, the majority of CAD systems do not provide the means for abstraction of appropriate analysis models. In this paper we present a new approach, based on midsurface abstraction, which holds significant promise in simplifying simulation-driven design. The method is user-friendly because very little interaction is required to guide the software in its automatic creation of the desired analysis model. It is also robust because it handles typical parts with complex and interacting features. Application of the method for feature recognition and abstraction is also briefly discussed.

scholarly journals Popliteal catheter placement utilizing ultrasound needle guidance system

2010 ◽  
pp. 45
Author(s):  
Steven Clendenen ◽  
Steven Clendenen ◽  
Robards ◽  
Roy Greengrass
Keyword(s):  
Catheter Placement ◽  
Guidance System ◽  
Needle Guidance

A needle guidance system for biopsy and therapy using two-dimensional ultrasound

2008 ◽  
Vol 35 (2) ◽  
pp. 617-628 ◽  
Author(s):  
Nathan Bluvol ◽  
Allison Shaikh ◽  
Anat Kornecki ◽  
David Del Rey Fernandez ◽  
Donal Downey ◽  
...  
Keyword(s):  
Guidance System ◽  
Two Dimensional ◽  
Needle Guidance

MRI-guided prostate focal laser ablation therapy using a mechatronic needle guidance system

2014 ◽  
Author(s):  
Jeremy Cepek ◽  
Uri Lindner ◽  
Sangeet Ghai ◽  
Sean R. H. Davidson ◽  
John Trachtenberg ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Guidance System ◽  
Needle Guidance ◽  
Ablation Therapy ◽  
Mri Guided

scholarly journals The Radiocarbon Intracavity Optogalvanic Spectroscopy Setup at Uppsala

Radiocarbon ◽  
2013 ◽  
Vol 55 (2) ◽  
pp. 237-250 ◽  
Author(s):  
Gerriet Eilers ◽  
Anders Persson ◽  
Cecilia Gustavsson ◽  
Linus Ryderfors ◽  
Emad Mukhtar ◽  
...  
Keyword(s):  
Ir Absorption ◽  
Pharmaceutical Sciences ◽  
Gas Composition ◽  
Detection Techniques ◽  
Optogalvanic Spectroscopy ◽  
The Status ◽  
Alternative Detection ◽  
Induced Changes ◽  
User Friendly ◽  
Initial Results

Accelerator mass spectrometry (AMS) is by far the predominant technology deployed for radiocarbon tracer studies. Applications are widespread from archaeology to biological, environmental, and pharmaceutical sciences. In spite of its excellent performance, AMS is expensive and complicated to operate. Consequently, alternative detection techniques for 14C are of great interest, with the vision of a compact, user-friendly, and inexpensive analytical method. Here, we report on the use of intracavity optogalvanic spectroscopy (ICOGS) for measurements of the 14C/12C ratio. This new detection technique was developed by Murnick et al. (2008). In the infrared (IR) region, CO2 molecules have strong absorption coefficients. The IR-absorption lines are narrow in line width and shifted for different carbon isotopes. These properties can potentially be exploited to detect 14CO2, 13CO2, or 12CO2 molecules unambiguously. In ICOGS, the sample is in the form of CO2 gas, eliminating the graphitization step that h is required in most AMS labs. The status of the ICOGS setup in Uppsala is presented. The system is operational but not yet fully developed. Data are presented for initial results that illustrate the dependence of the optogalvanic signal on various parameters, such as background and plasma-induced changes in the sample gas composition.

Evaluation of a New Needle Guidance System for Ultrasound

2016 ◽  
Vol 41 (3) ◽  
pp. 356-361 ◽  
Author(s):  
Jeffrey D. Swenson ◽  
Kendell R. Klingler ◽  
Nathan L. Pace ◽  
Jennifer J. Davis ◽  
Evelyn C. Loose
Keyword(s):  
Guidance System ◽  
Needle Guidance
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