1.3. Estimation of the depth of stab wounds by magnetic resonance imaging (MRI). A pilot experimental study reproducing intra vitam conditions

2014 ◽  
Vol 2 (2) ◽  
pp. 96
Author(s):  
P. Fais ◽  
C. Giraudo ◽  
R. Boscolo-Berto ◽  
G. Cecchetto ◽  
M. Toniolo ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Experimental Study ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Stab Wounds ◽  
Magnetic Resonance Imaging Mri

scholarly journals EXPERIMENTAL STUDY OF DOUBLE CABLE-CONDUIT DRIVING DEVICE FOR MRI COMPATIBLE BIOPSY ROBOTS

2021 ◽  
pp. 2140014
Author(s):  
XIAOHONG JIA ◽  
YONGDE ZHANG ◽  
HAIYAN DU ◽  
YAN YU
Keyword(s):  
Magnetic Resonance Imaging ◽  
Experimental Data ◽  
Experimental Study ◽  
Magnetic Resonance ◽  
Large Scale ◽  
Breast Biopsy ◽  
The Novel ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Better Than

Magnetic resonance imaging (MRI) is better than other imaging equipment in detecting tumors, and navigation for robotic breast intervention biopsy. However, material requirements for robots driving devices are demanding incredibly because of the environment. Given this problem, a novel double cable-conduit driving method is put forward in this paper, which can be used in MRI for breast intervention robots. Besides, lebus grooves are adopted to the driving wheels, which enable the system to realize remote-range and large-scale driving on the premise that the precision can be further enhanced. The driving characteristic of the novel cable-conduit is established. Moreover, the cable-conduit experimental data proves the results of theoretical deduction. Finally, the cable-conduit driving device is compensated, the average errors in the [Formula: see text], [Formula: see text], and [Formula: see text] directions of the needle tip entering the tissue are less than 2[Formula: see text]mm. The consequence verifies that it can meet the requirements for breast biopsy robot application under MR environment.

Developing a Magnetic Resonance-Compatible Catheter for Cardiac Catheterization

2012 ◽  
Vol 6 (4) ◽  
Author(s):  
Wei Yao ◽  
Tobias Schaeffter ◽  
Lakmal Seneviratne ◽  
Kaspar Althoefer
Keyword(s):  
Magnetic Resonance Imaging ◽  
Mechanical Properties ◽  
Experimental Study ◽  
Magnetic Resonance ◽  
Cardiac Catheterization ◽  
Mechanical Performance ◽  
Resonance Imaging ◽  
Radiation Hazards ◽  
Tissue Contrast ◽  
Magnetic Resonance Imaging Mri

Magnetic Resonance Imaging (MRI) is a means to guide cardiac interventions and provide excellent soft tissue contrast while avoiding radiation hazards. This paper investigates and evaluates a new Magnetic Resonance (MR)-compatible catheter for cardiac catheterization. Important mechanical properties of the catheter are measured and investigated; these include flexibility, pushability, and torquability. The mechanical performance of the MR-compatible and steerable catheter is benchmarked against three commercially-available clinical ablation catheters that are not MR-compatible. The MR-compatibility of the proposed catheter is also evaluated through an experimental study inside a 1.5 T MRI scanner. The new catheter is shown to have a mechanical performance comparable to that of existing catheters while being MR compatible.

Top-Ten Tips for Imaging the Brachial Plexus with Ultrasound and MRI

2019 ◽  
Vol 23 (04) ◽  
pp. 405-418 ◽  
Author(s):  
James F. Griffith ◽  
Radhesh Krishna Lalam
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Brachial Plexus ◽  
Muscle Denervation ◽  
Resonance Imaging ◽  
Neural Injury ◽  
Clinical Indications ◽  
Magnetic Resonance Imaging Mri ◽  
High Level ◽  
Extensive Involvement

AbstractWhen it comes to examining the brachial plexus, ultrasound (US) and magnetic resonance imaging (MRI) are complementary investigations. US is well placed for screening most extraforaminal pathologies, whereas MRI is more sensitive and accurate for specific clinical indications. For example, MRI is probably the preferred technique for assessment of trauma because it enables a thorough evaluation of both the intraspinal and extraspinal elements, although US can depict extraforaminal neural injury with a high level of accuracy. Conversely, US is probably the preferred technique for examination of neurologic amyotrophy because a more extensive involvement beyond the brachial plexus is the norm, although MRI is more sensitive than US for evaluating muscle denervation associated with this entity. With this synergy in mind, this review highlights the tips for examining the brachial plexus with US and MRI.

Use of Magnetic Resonance Imaging (MRI) to Determine the 3D Geometry in the Human Rectum

Endoscopy ◽  
2004 ◽  
Vol 36 (10) ◽  
Author(s):  
BP McMahon ◽  
JB Frøkjær ◽  
A Bergmann ◽  
DH Liao ◽  
E Steffensen ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
3D Geometry ◽  
Human Rectum ◽  
Magnetic Resonance Imaging Mri
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