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Noninvasive Imaging Approaches to Evaluate the Patient With Known or Suspected Aortic Disease

Christoph A. Nienaber, Stephan Kische, Valeria Skriabina, Hüseyin Ince
2009 Circulation Cardiovascular Imaging  
Postprocessing involves multiplanar, volume-rendered, and MIP reconstructions as well as virtual endoscopy for complex evaluation of aortic dimensions, coarctation, parietal thrombus and ulcers, dissection  ...  Advantages of TEE for detection of acute aortic syndromes result from close proximity of the esophagus to the thoracic aorta and its ability to visualize both ascending and descending aorta and parts of  ...  World Wide Web at: The online version of this article, along with updated information and services, is located on the http  ... 
doi:10.1161/circimaging.109.850206 pmid:19920049 fatcat:hub6lkzmjzg4hn2o4yysx7wxka

Principles and Applications of Computer Graphics in Medicine

F.P. Vidal, F. Bello, K.W. Brodlie, N.W. John, D. Gould, R. Phillips, N.J. Avis
2006 Computer graphics forum (Print)  
The medical domain provides excellent opportunities for the application of computer graphics, visualization and virtual environments, with the potential to help improve healthcare and bring benefits to  ...  The article begins with a description of the software algorithms and techniques that allow visualization of and interaction with medical data.  ...  A 'transfer function' is used to map physical fields of a given volume data set to optical properties, such as opacity There are four basic approaches to direct volume rendering.  ... 
doi:10.1111/j.1467-8659.2006.00822.x fatcat:fyzzlivbkvffdejorxr62gg2zi

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 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 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.  ...  Virtual Endoscopy Virtual endoscopy (VE) is a new technique for visualization of internal structures that has some advantages over classical endoscopy (CE) [Rob96] .  ... 
doi:10.2312/egst.20041024 fatcat:of4sims3trcb5cuyyqjx7omoa4

Systematic Parameterization, Storage, and Representation of Volumetric DICOM Data

Felix Fischer, M. Alper Selver, Sinem Gezer, Oğuz Dicle, Walter Hillen
2015 Journal of Medical and Biological Engineering  
, and provide efficient storage as well as transfer of visualized data.  ...  Radiologists process these images through various tools and techniques in order to generate 3D renderings for various applications, such as surgical planning, medical education, and volumetric measurements  ...  The additional stent representation is exclusively achieved by the application of a transfer function, and therefore requires almost no additional time or file size.  ... 
doi:10.1007/s40846-015-0097-5 pmid:26692829 pmcid:PMC4666236 fatcat:7ugsqrplgfditniplpz5pv6qym

Towards the Virtual Physiological Human [article]

Nadia Magnenat-Thalmann, Benjamin Gilles, Hervé Delingette, Andrea Giachetti, Marco Agus
2007 Eurographics State of the Art Reports  
Human body representations have been used for centuries to help in understanding and documenting the shape and function of its compounding parts.  ...  Nowadays, medical acquisition devices especially medical scanners are able to produce a large amount of information, such as highresolution volumes, temporal sequences or functional images, more-and-more  ...  Often, there are features of interest in volume data that are difficult to extract and visualize with 1D transfer functions.  ... 
doi:10.2312/egt.20071062 fatcat:iyybqfp4nnadhfkaeagp6qr63q

Frontiers in Intravascular Imaging Technologies

Y. Honda, P. J. Fitzgerald
2008 Circulation  
For peripheral and intracardiac echocardiographic (ICE) applications, larger imaging catheters with lower center frequencies (8 to 20 MHz) are produced in both mechanical and electrical configurations.  ...  The greatest advantage of this optical technology is its resolution that is significantly higher (10 to 15-m axial resolution and 20 to 25-m lateral and out-of-plane resolution) than ultrasound-based approaches  ...  Acknowledgments We are indebted to Brian K. Courtney, MD, MSEE, for his scientific and editorial advice.  ... 
doi:10.1161/circulationaha.105.551804 pmid:18413510 fatcat:whslay2bbvfgvjmtiprvq5niuu

Navigation in Endoscopic Soft Tissue Surgery: Perspectives and Limitations

Matthias Baumhauer, Marco Feuerstein, Hans-Peter Meinzer, J. Rassweiler
2008 Journal of endourology  
In order to establish a computer aided workflow from diagnosis to surgical treatment and follow-up, several proposals for computer assisted soft tissue interventions have been made in recent years.  ...  Furthermore, this article provides the reader with new trends and technologies in the area of computer assisted surgery.  ...  The transfer function assigns for instance to each Hounsfield unit of a CT scan a certain representation in the visualization.  ... 
doi:10.1089/end.2007.9827 pmid:18366319 fatcat:fvyhltppfvap7f4i3podtx3o7a

Virtual reality simulation for the optimization of endovascular procedures: current perspectives

Nung Rudarakanchana, Liesbeth Desender, Isabelle Van Herzeele, Nicholas JW Cheshire
2015 Vascular Health and Risk Management  
As our understanding of the skills, both technical and nontechnical, required for optimal endovascular performance improves, the requisite tools for objective assessment of these skills are being developed  ...  Simulation training that allows deliberate practice without danger to patients may be key to bridging the gap between new endovascular technology and improved patient outcomes.  ...  Analysis of objective technical skills assessment parameters (time to: proximal aortic occlusion, deployment of main body of aortic stent graft, cannulation of contralateral limb gate, and completion of  ... 
doi:10.2147/vhrm.s46194 pmid:25792841 pmcid:PMC4362978 fatcat:pvrjmxk345hchpkmmdc4wv3swa

Advances in three-dimensional diagnostic radiology

1998 Journal of Anatomy  
It is now possible to manipulate 3D images of 256$ at 15 frames per second interactively, placing virtual reality within reach.  ...  One of the newer and promising methodologies for image analysis is based on a mathematical analysis of the human (cortical) visual processing : multiscale image analysis.  ...  The authors thank Philips Medical Systems, Medison-Kretz and the Department of Radiology of Utrecht University Hospital for supplying the images.  ... 
doi:10.1046/j.1469-7580.1998.19330363.x pmid:9877291 pmcid:PMC1467872 fatcat:rbsaicggizdqxg5wu2q37rkpgi

Cardiac and Thoracic-Abdominal Surgery

2006 International Journal of Computer Assisted Radiology and Surgery  
Combination of CT volumes acquired before surgery will be helpful to show the tumor's location by application of registration techniques.  ...  Since the Open-MR volumes are obtained in a lower magnetic field (0.5 T), their qualities are not always sufficient to visualize tumors clearly.  ...  This point represents a good approximation for the current position of the stent and allows us to visualize the stent in the CT volume.  ... 
doi:10.1007/s11548-006-0021-0 fatcat:7girlkxijner7ay3zih4jrzugq

Real-Time Volume Graphics [article]

Klaus Engel, Markus Hadwiger, Joe M. Kniss, Christof Rezk-Salama
2006 Eurographics State of the Art Reports  
This tutorial covers applications for science, visual arts and entertainment, such as medical visualization, visual effects and computer games.  ...  In addition to the traditional field of scientific visualization, the interest in applying these techniques for visual arts and real-time rendering is steadily growing.  ...  The authors would like to thank Christian Sigg for important input. The VRVis research center is funded in part by the Austrian Kplus project. The medical data sets are courtesy of Tiani MedGraph.  ... 
doi:10.2312/egt.20061064 fatcat:r6dixu2b4zgkzjdhp24557y2vu

Circulation: Cardiovascular Imaging Editors' Picks: Most Important Articles in Cardiovascular Imaging Science, Part II

2013 Circulation Cardiovascular Imaging  
It was also found that neurohormonal activation was by guest on Summary: In aortic stenosis (AS), the precise assessment of its severity is essential for appropriate therapeutic decision-making.  ...  , and its reliability under a wide range of hemodynamic interventions and loading conditions.  ...  Because ultrasound is cost-effective, portable, and widely available, its application for molecular imaging using microbubbles targeted to activated platelets may provide a unique approach for the development  ... 
doi:10.1161/circimaging.113.001335 fatcat:3fzx5xkdozdd7oglhqe56crbfe

Automatic Aorta Segmentation and Valve Landmark Detection in C-Arm CT for Transcatheter Aortic Valve Implantation

Yefeng Zheng, M. John, Rui Liao, A. Nottling, J. Boese, J. Kempfert, T. Walther, G. Brockmann, D. Comaniciu
2012 IEEE Transactions on Medical Imaging  
Taking about 1.1 s to process a volume, it is also computationally efficient.  ...  Automatic aorta segmentation and aortic valve landmark detection in a C-arm CT volume facilitate the seamless integration of C-arm CT into the TAVI workflow and improve the patient care.  ...  Aortic aneurysm analysis (including aneurysm detection, segmentation, measurement, stent simulation, and virtual endoscopy) is a major application of aorta segmentation in previous work.  ... 
doi:10.1109/tmi.2012.2216541 pmid:22955891 fatcat:yhggoh4ujjderiyhb3qq6ermai

The Hybrid Operating Room [chapter]

Georg Nollert, Thomas Hartkens, Anne Figel, Clemens Bulitta, Franziska Altenbeck, Vanessa Gerhar
2012 Special Topics in Cardiac Surgery  
A deep understanding of the clinical applications, the current and future technology, and their implications on workflows is needed for a sound room design.  ...  stenosis, or management of a previously implanted stenotic stent.  ...  In the near future, off the shelf fenestrated aortic stents will become available for the treatment of extensive aortic disease.  ... 
doi:10.5772/27599 fatcat:onux6bhiafddveyv7t7mpdqiyq

The surgeon and the musician☆

Pascal R. Vouhé
2011 European Journal of Cardio-Thoracic Surgery  
Both researchers 1,3 and systematic reviewers 2 have called for a large RCT to address the uncertainty.  ...  There are no RCTs with adequate power to test the relative effectiveness of different treatments 2 , and there is manifest variation in practice 1 .  ...  cardiac function, severity of the valve regurgitation (volume overload), rapidity of the volume overload and the onset of hyperdynamic syndrome associate to sepsis.  ... 
doi:10.1016/j.ejcts.2010.11.046 pmid:21163668 fatcat:fmw7igaahfho7e36ubc2y4fbgy
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