Initial results in the development of a guidance system for a powered wheelchair

1996 ◽  
Vol 4 (3) ◽  
pp. 143-151 ◽  
Author(s):  
J.-D. Yoder ◽  
E.T. Baumgartner ◽  
S.B. Skaar
Keyword(s):  
Guidance System ◽  
Powered Wheelchair ◽  
Initial Results

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.

Electron Probe Analysis of Vertebrate Smooth Muscle: Distribution of Ca and Ci

1976 ◽  
Vol 34 ◽  
pp. 334-335 ◽  
Author(s):  
Avril V. Somlyo ◽  
H. Shuman ◽  
A.P. Somlyo
Keyword(s):  
Smooth Muscle ◽  
Electron Probe ◽  
Preliminary Report ◽  
Cell Damage ◽  
Electron Probe Analysis ◽  
Perinuclear Space ◽  
Probe Analysis ◽  
High K ◽  
Low K ◽  
Initial Results

This is a preliminary report of electron probe analysis of rabbit portal-anterior mesenteric vein (PAMV) smooth muscle cryosectioned without fixation or cryoprotection. The instrumentation and method of electron probe quantitation used (1) and our initial results with cardiac (2) and skeletal (3) muscle have been presented elsewhere.In preparations depolarized with high K (K2SO4) solution, significant calcium peaks were detected over the sarcoplasmic reticulum (Fig 1 and 2) and the continuous perinuclear space. In some of the fibers there were also significant (up to 200 mM/kg dry wt) calcium peaks over the mitochondria. However, in smooth muscle that was not depolarized, high mitochondrial Ca was found in fibers that also contained elevated Na and low K (Fig 3). Therefore, the possibility that these Ca-loaded mitochondria are indicative of cell damage remains to be ruled out.

High resolution two-dimensional motility mapping; Methodology and initial results

2001 ◽  
Vol 120 (5) ◽  
pp. A226-A226 ◽  
Author(s):  
W LAMMERS ◽  
S DHANASEKARAN ◽  
J SLACK ◽  
B STEPHEN
Keyword(s):  
High Resolution ◽  
Two Dimensional ◽  
Initial Results

1103: Laparoscopic Salvage Nephrectomy after Targeted Neoadjuvant Therapy for Metastatic Renal Cell Carcinoma: Initial Results

2007 ◽  
Vol 177 (4S) ◽  
pp. 364-364 ◽  
Author(s):  
Surena F. Matin ◽  
Christopher G. Wood ◽  
Shi-Ming Tu ◽  
Nizar M. Tannir ◽  
Eric Jonasch
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Neoadjuvant Therapy ◽  
Metastatic Renal Cell Carcinoma ◽  
Renal Cell ◽  
Initial Results
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