scholarly journals Robust Catheter Tracking by Fusing Electromagnetic Tracking, Fiber Bragg Grating and Sparse Fluoroscopic Images

2021 ◽  
Author(s):  
Xuan Thao Ha ◽  
Mouloud Ourak ◽  
Omar Al-Ahmad ◽  
Di Wu ◽  
Gianni Borghesan ◽  
...  
Keyword(s):  
Fiber Length ◽  
3D Visualization ◽  
Traditional Approach ◽  
Mean Square ◽  
Electromagnetic Tracking ◽  
Fluoroscopic Image ◽  
Dynamic Experiments ◽  
Novel Method ◽  
Shape Sensing ◽  
2D And 3D

<p>In this paper, we propose a novel method to improve the shape sensing accuracy of FBG for catheter by fusing FBG-based sensed shape with sparse fluoroscopic images. The main advantage of the new proposed method compared to other methods are the limited number in fluoroscopic image used during procedure while it still maintains high precision real-time 3D visualization of the catheter. To demonstrate the performance of the proposed method 2D and 3D dynamic experiments were carried out and they shows promising results. For a catheter with an embedded fiber length of 170 mm, the proposed approach can reconstruct the 3D shape with a median root mean square error of 0.54 mm were seen in the 3D experiments compared to the traditional approach of using FBG alone of 0.86 mm.</p>

scholarly journals Robust Catheter Tracking by Fusing Electromagnetic Tracking, Fiber Bragg Grating and Sparse Fluoroscopic Images

2021 ◽  
Author(s):  
Xuan Thao Ha ◽  
Mouloud Ourak ◽  
Omar Al-Ahmad ◽  
Di Wu ◽  
Gianni Borghesan ◽  
...  
Keyword(s):  
Fiber Length ◽  
3D Visualization ◽  
Traditional Approach ◽  
Mean Square ◽  
Electromagnetic Tracking ◽  
Fluoroscopic Image ◽  
Dynamic Experiments ◽  
Novel Method ◽  
Shape Sensing ◽  
2D And 3D

<p>In this paper, we propose a novel method to improve the shape sensing accuracy of FBG for catheter by fusing FBG-based sensed shape with sparse fluoroscopic images. The main advantage of the new proposed method compared to other methods are the limited number in fluoroscopic image used during procedure while it still maintains high precision real-time 3D visualization of the catheter. To demonstrate the performance of the proposed method 2D and 3D dynamic experiments were carried out and they shows promising results. For a catheter with an embedded fiber length of 170 mm, the proposed approach can reconstruct the 3D shape with a median root mean square error of 0.54 mm were seen in the 3D experiments compared to the traditional approach of using FBG alone of 0.86 mm.</p>

Alternative 2D and 3D Visualization Methods for Microsurgery: Posture, Performance, and Discomfort Analysis

2011 ◽  
Author(s):  
Denny Yu ◽  
Michael Sackllah ◽  
Charles Woolley ◽  
Steven Kasten ◽  
Thomas J. Armstrong
Keyword(s):  
3D Visualization ◽  
2D And 3D

scholarly journals Homogeneous 2D and 3D alignment of cardiomyocyte in dilated cardiomyopathy revealed by intravital heart imaging

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kiyoshi Masuyama ◽  
Tomoaki Higo ◽  
Jong-Kook Lee ◽  
Ryohei Matsuura ◽  
Ian Jones ◽  
...  
Keyword(s):  
Heart Failure ◽  
Dilated Cardiomyopathy ◽  
Cardiac Dysfunction ◽  
Three Dimensional ◽  
Single Layer ◽  
Specific Pattern ◽  
Two Dimensional ◽  
Heart Imaging ◽  
Novel Method ◽  
2D And 3D

AbstractIn contrast to hypertrophic cardiomyopathy, there has been reported no specific pattern of cardiomyocyte array in dilated cardiomyopathy (DCM), partially because lack of alignment assessment in a three-dimensional (3D) manner. Here we have established a novel method to evaluate cardiomyocyte alignment in 3D using intravital heart imaging and demonstrated homogeneous alignment in DCM mice. Whilst cardiomyocytes of control mice changed their alignment by every layer in 3D and position twistedly even in a single layer, termed myocyte twist, cardiomyocytes of DCM mice aligned homogeneously both in two-dimensional (2D) and in 3D and lost myocyte twist. Manipulation of cultured cardiomyocyte toward homogeneously aligned increased their contractility, suggesting that homogeneous alignment in DCM mice is due to a sort of alignment remodelling as a way to compensate cardiac dysfunction. Our findings provide the first intravital evidence of cardiomyocyte alignment and will bring new insights into understanding the mechanism of heart failure.

scholarly journals Interpolation and 3D visualization of soil moisture

2017 ◽  
Vol 11 (1) ◽  
pp. 23-34
Author(s):  
András Hervai ◽  
Ervin Pirkhoffer ◽  
Szabolcs Ákos Fábián ◽  
Ákos Halmai ◽  
Gábor Nagy ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Cross Sections ◽  
3D Visualization ◽  
Temporal Changes ◽  
Adaptation To Climate Change ◽  
Soil Moisture Sensors ◽  
Average Maximum ◽  
Moisture Conditions ◽  
2D And 3D ◽  
Soil Moisture Measurement

Adaptation to climate change demands the optimal and sustainable water management in agriculture, with an inevitable focus on soil moisture conditions. In the current study we developed an ArcGIS 10.4. platform-based application (software) to model spatial and temporal changes in soil moisture in a soy field. Six SENTEK Drill & Drop soil moisture sensors were deployed in an experimental field of 4.3 hectares by the contribution of Elcom Ltd. Soil moisture measurement at each location were taken at six depths (5, 15, 25, 35, 45 and 55 cm) in 60-minute intervals. The model is capable to spatially interpolate monitored soil moisture using the technique. The time sequence change of soil moistures can be tracked by a Time Slider for both the 2D and 3D visualization. Soil moisture temporal changes can be visualized in either daily or hourly time intervals, and can be shown as a motion figure. Horizon average, maximum and minimum values of soil moisture data can be identified with the builtin tool of ArcGIS. Soil moisture spatial distribution can be obtained and plotted at any cross sections, whereas an alarm function has also been developed for tension values of 250, 1,000 and 1,500 kPa.

Building a Visual Analytics Tool for Location-Based Services

2016 ◽  
pp. 620-642 ◽  
Author(s):  
Erdem Kaya ◽  
Mustafa Tolga Eren ◽  
Candemir Doger ◽  
Selim Saffet Balcisoy
Keyword(s):  
Visual Analytics ◽  
3D Visualization ◽  
Location Based Services ◽  
Task Completion ◽  
Temporal Data ◽  
Density Map ◽  
Spatio Temporal ◽  
Visualization Techniques ◽  
Analytical Tools ◽  
2D And 3D

Conventional visualization techniques and tools may need to be modified and tailored for analysis purposes when the data is spatio-temporal. However, there could be a number of pitfalls for the design of such analysis tools that completely rely on the well-known techniques with well-known limitations possibly due to the multidimensionality of spatio-temporal data. In this chapter, an experimental study to empirically testify whether widely accepted advantages and limitations of 2D and 3D representations are valid for the spatio-temporal data visualization is presented. The authors implemented two simple representations, namely density map and density cube, and conducted a laboratory experiment to compare these techniques from task completion time and correctness perspectives. Results of the experiment revealed that the validity of the generally accepted properties of 2D and 3D visualization needs to be reconsidered when designing analytical tools to analyze spatio-temporal data.

Virtual Dental Patient

2010 ◽  
pp. 317-336
Author(s):  
Nikos Nikolaidis ◽  
Ioannis Marras ◽  
Georgios Mikrogeorgis ◽  
Kleoniki Lyroudia ◽  
Ioannis Pitas
Keyword(s):  
Oral Cavity ◽  
Cross Sections ◽  
Force Feedback ◽  
3D Visualization ◽  
Virtual Endoscopy ◽  
Dental Students ◽  
Cavity Preparation ◽  
Specific Patient ◽  
Dental Patient ◽  
2D And 3D

The availability of datasets comprising of digitized images of human body cross sections (as well as images acquired with other modalities such as CT and MRI) along with the recent advances in fields like graphics, 3D visualization, virtual reality, 2D and 3D image processing and analysis (segmentation, registration, filtering, etc.) have given rise to a broad range of educational, diagnostic and treatment planning applications, such as virtual anatomy and digital atlases, virtual endoscopy, intervention planning etc. This chapter describes efforts towards the creation of the Virtual Dental Patient (VDP) i.e. a 3D face and oral cavity model constructed using human anatomical data that is accompanied by detailed teeth models obtained from digitized cross sections of extracted teeth. VDP can be animated and adapted to the characteristics of a specific patient. Numerous dentistry-related applications can be envisioned for the created VDP model. Here we focus on its use in a virtual tooth drilling system whose aim is to aid dentists, dental students and researchers in getting acquainted with the handling of drilling instruments and the skills and challenges associated with cavity preparation procedures in endodontic therapy. Virtual drilling can be performed within the VDP oral cavity, on 3D volumetric and surface models (meshes) of virtual teeth. The drilling procedure is controlled by the Phantom Desktop (Sensable Technologies Inc., Woburn, MA) force feedback haptic device. The application is a very promising educational and research tool that allows the user to practice in a realistic manner virtual tooth drilling for endodontic treatment cavity preparation and other related tasks.

2D and 3D Visualization of Stance in Popular Fiction

2010 ◽  
pp. 272-292 ◽  
Author(s):  
Lisa Lena Opas-Hänninen ◽  
Tapio Seppänen
Keyword(s):  
3D Visualization ◽  
Popular Fiction ◽  
2D And 3D

SVG and X3D: New XML Technologies for 2D and 3D Visualization

2006 ◽  
pp. 124-133
Author(s):  
Vladimir Geroimenko ◽  
Larissa Geroimenko
Keyword(s):  
3D Visualization ◽  
2D And 3D ◽  
Xml Technologies

A Novel Method for Hull's Three Dimensional Deformation Measurement

2013 ◽  
Vol 344 ◽  
pp. 93-98 ◽  
Author(s):  
Xin Ming Liu ◽  
Yao Yu Zhang ◽  
Xiao Yong Feng ◽  
Qian Xue Wang
Keyword(s):  
Optical Sensor ◽  
Twist Angle ◽  
Three Dimensional ◽  
Angle Measurement ◽  
Deformation Measurement ◽  
Dynamic Experiments ◽  
Moire Fringe ◽  
Novel Method ◽  
Moiré Fringe ◽  
Dynamic States

In this paper, a novel method for hulls three-dimensional angle measurement is presented. For the measurement of the transverse twist angle, a method based on moiré fringe is proposed, for the lengthways flexibility and course flexibility angle the conventional optical sensor method is applied. The principle of the measurement is discussed in detail. To verify the accuracy of the proposed method, both static and dynamic experiments are carried out. Results show that in the static states, the accuracy for them are smaller than 5'', in the dynamic states, the accuracy for them are smaller than 10''.

Sign in / Sign up

Export Citation Format

Share Document