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Haptic guided seeding of MRA images for semi-automatic segmentation

E. Vidholm, X. Tizon, I. Nystrom, E. Bengtsson
2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano (IEEE Cat No. 04EX821)  
We investigate how stereo graphics and haptics can be combined to facilitate the seeding procedure in semi-automatic segmentation of magnetic resonance angiography (MRA) images.  ...  Seed-regions are propagated from the seed-points according to an algorithm that favors bright voxels. An experienced user have tested the interface on a whole-body MRA image with promising results.  ...  The application in this paper is a study of how stereo graphics and haptics can facilitate the seeding process needed for segmenting MRA volumes.  ... 
doi:10.1109/isbi.2004.1398531 fatcat:r2evk45p4jcudesxxyji5yqkde

ImaGiNe Seldinger: First simulator for Seldinger technique and angiography training

V. Luboz, Y. Zhang, S. Johnson, Y. Song, C. Kilkenny, C. Hunt, H. Woolnough, S. Guediri, J. Zhai, T. Odetoyinbo, P. Littler, A. Fisher (+11 others)
2013 Computer Methods and Programs in Biomedicine  
It is composed of two workstations: 1) a simulated pulse is palpated, in an immersive environment, to guide needle puncture, 2) two haptic devices provide a novel interface where a needle can direct a  ...  We propose a training alternative through a new virtual simulator supporting the Seldinger technique: ImaGiNe (Imaging Guided interventional Needle) Seldinger.  ...  Many automatic or semi-automatic vascular segmentation techniques have been proposed and implemented in recent years.  ... 
doi:10.1016/j.cmpb.2013.05.014 pmid:23787028 fatcat:vzw76d5fpffydkazek6yqkokxa

Doppler Ultrasound Driven Biomechanical Model of the Brain for Intraoperative Brain-Shift Compensation: A Proof of Concept in Clinical Conditions [chapter]

Marek Bucki, Olivier Palombi, Mathieu Bailet, Yohan Payan
2012 Studies in Mechanobiology, Tissue Engineering and Biomaterials  
Yet, image-guided neurosurgery faces an important issue for large skull openings where brain soft-tissues can exhibit large deformations in the course of surgery.  ...  In this article we present a neuronavigator which addresses this issue and offers passive help to the surgeon by displaying the position of the guided tools with respect to the corrected location of the  ...  Gilles Francony from the surgical reanimation unit (URC) at the Hospital Michallon for their advice and help during this study. hal-00706803, version 1 -11 Jun 2012  ... 
doi:10.1007/8415_2012_119 fatcat:id7vypjyyjbzrk2q4h54txxftq

Algorithms for Grey-Weighted Distance Computations [article]

Magnus Gedda
2019 arXiv   pre-print
The label-setting category of algorithms is shown to be the best choice for all scenarios.  ...  With the increasing size of datasets and demand for real time response for interactive applications, improving runtime for algorithms with excessive computational requirements has become increasingly important  ...  The CE-MRA image was used by Vidholm et al. [39] for semi-automatic segmentation with haptic guided seeding.  ... 
arXiv:1905.03017v1 fatcat:ygjibepobnd5poqeqve7nj43ky

Principles and Applications of Medical Virtual Environments [article]

F. P. Vidal, F. Bello, K. Brodlie, N.W. John, D. Gould, R. Phillips, N. J. Avis
2004 Eurographics State of the Art Reports  
The report begins with a description of the commonly used imaging modalities and then details the software algorithms and hardware that allows visualization of and interaction with this data.  ...  The medical domain offers many excellent opportunities for the application of computer graphics, visualization, and virtual environments, offering the potential to help improve healthcare and bring benefits  ...  The process remains semi-automatic, with user guidance needed in order to help correct identification. For example, region growing algorithms need to be initiated with a user defined seed point.  ... 
doi:10.2312/egst.20041024 fatcat:of4sims3trcb5cuyyqjx7omoa4

CARS 2020—Computer Assisted Radiology and Surgery Proceedings of the 34th International Congress and Exhibition, Munich, Germany, June 23–27, 2020

2020 International Journal of Computer Assisted Radiology and Surgery  
The traditional platforms of CARS Congresses for the scholarly publication and communication process for the presentation of R&D ideas were congress centers or hotels, typically hosting 600-800 participants  ...  Aiming to stimulate complimentary thoughts and actions on what is being presented at CARS, implies a number of enabling variables for optimal analogue scholarly communication, such as (examples given are  ...  Conclusion This work attempts to provide and validate a self-sustained tool for the automatic performance assessment of virtual temporal bone dissection performed within a mastoidectomy surgical simulator  ... 
doi:10.1007/s11548-020-02171-6 pmid:32514840 fatcat:lyhdb2zfpjcqbf4mmbunddwroq


2019 Clinical Neuroradiology  
Conclusion: We report about a rare case of bilateral temporomesial polymicrogyria in a 28-year old female patient as cause for structural epilepsy.  ...  For whole volume vessel segmentation we used automatic multi-scale vessel filtering from JIST-LayoutTool of MIPAV.  ...  Mean susceptibility values of automatically segmented voxels depend mostly on reconstruction algorithms (Fig. 2) .  ... 
doi:10.1007/s00062-019-00826-9 fatcat:c6tdsym7jjc5dcduvvz7nxhcj4

3D livewire and live-vessel : minimal path methods for interactive medical image segmentation

Miranda Poon
First, we present a novel method for 3D segmentation based on a 3D Livewire approach.  ...  Second, we propose a method for efficiently segmenting 2D vascular networks, called 'Live-Vessel'.  ...  (MRA) for capturing vasculature.  ... 
doi:10.14288/1.0066786 fatcat:dhflzdk4lbd7tpxix6kskwz2qa

Developing Image-Guided, Bedside 3D Printing Practice in Plastic & Reconstructive Surgery

Modern imaging technologies are essential for preoperative planning in plastic and reconstructive surgery.  ...  Compared to the traditional modalities, a 3D-printed model can provide haptic feedback enhancing spatio-temporal understanding of the anatomy.  ...  and the quality of MRA images (144) .  ... 
doi:10.26180/5c8a15544207c fatcat:43ipanpt2nea5kj4asoa7475rq

38th Meeting of the Canadian Congress of Neurological Sciences

2003 Canadian Journal of Neurological Sciences  
There was no evidence of dissection on MRA and his screen for hypercoaguable factors was negative.  ...  A suite of standard imaging techniques were available, including T1, T2, FLARE, MRA, diffusion-weighted or perfusion images. Results: We have now operated on 386 patients under iMRI guidance.  ...  Staff have or are expected to develop skills in caring for stroke patients in both the acute and rehab phases of the care continuum.  ... 
doi:10.1017/s0317167100002535 fatcat:4glcqh7vvfgd5fh3nwnwyceo5y

Computer-support for intracranial aneurysms [article]

Sylvia Saalfeld, Universitäts- Und Landesbibliothek Sachsen-Anhalt, Martin-Luther Universität, Bernhard Preim
To determine the intracranial aneurysm rupture risk is an active research area, including computer support for the segmentation and subsequent extraction of 3D morphological shape information, paving the  ...  way for realistic hemodynamic blood flow simulations as well as the evaluation of the available information.  ...  We also thank the Institute for Neuroradiology, University of Magdeburg, for providing the medical image data.  ... 
doi:10.25673/35206 fatcat:excf6slbfbhrfdj6kyyjgeytve

Canadian Society of Plastic Surgeons

W Bryan Callaghan, Edward Tredget, Gilles Beauregard
2014 Plastic Surgery  
Most patients reported that guards were absent at the time of injury. Work on small pieces and lack of dexterity were most cited as reasons for guard retrieval.  ...  METHODS: We conducted a retrospective analysis of all records of patients referred to our center for digital amputation or devascularization from January 2008 to January 2013.  ...  compared to static-seeded grafts.  ... 
doi:10.1177/229255031402200205 pmcid:PMC4116313 fatcat:6g25zadcivfqrboe4q33pkeo7e

Collaborative optimisation of focused anatomy observation and drawing techniques for enhancing cognitive memorisation. S149, (page 63). In: International Federation of Associations of Anatomists 19th Congress Abstracts 9th – 11th August 2019 London, UK

Leonard Shapiro, Iain Keenan
Collaborative optimisation of focused anatomy observation and drawing techniques for enhancing cognitive memorisation. S149, (page 63).  ...  In: International Federation of Associations of Anatomists 19th Congress Abstracts 9th – 11th August 2019 London, UK.  ...  Thanks to the segmentation data, the structures on the volume model could be automatically annotated.  ... 
doi:10.25375/uct.12824237 fatcat:i777oabeinfclgsi7ecwcve3sy

Picturing Everyday Life: Politics and Aesthetics of Saenghwal in Postwar South Korea, 1953-1959

Jae Won Edward Chung
to a reconfiguration of this problematic: national division, South Korea's semi-sovereignty vis-à-vis the U.S. and the denial of dec [...]  ...  For example, President Syngman Rhee's administration attempted to control the discourse of "New Life" (shinsaenghwal) by linking the spatio-temporality of the everyday to reconstruction and modernization  ...  and semi-sovereignty, with a sustained focus on the primacy of sentiment (of waiting and wanting, for example).  ... 
doi:10.7916/d8z89qvs fatcat:cx6p2xm4ojcnpl65icgcljbepq