Virtual Colon Flattening

Bartrolí, Anna Vilanova i; Wegenkittl, Rainer; König, Andreas; Gröller, Eduard; Sorantin, Erich

doi:10.1007/978-3-7091-6215-6_14

Cited by 16 publications

(6 citation statements)

References 9 publications

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“…Map-based visualizations are projections of 3D data to a plane, often guided by activity metaphors, such as unfolding [10], [122], [142], [156], inflation [46], and flattening [11] which inspired the used projection techniques. The map metaphor suggests to combine layers, such as functional areas and major fibers of the brain.…”

Section: A Map Metaphor For Medical Diagnosismentioning

confidence: 99%

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A Survey of Medical Visualization through the Lens of Metaphors

Preim,

Meuschke,

Weis

2024

IEEE Trans. Visual. Comput. Graphics

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We provide an overview of metaphors that were used in medical visualization and related user interfaces. Metaphors are employed to translate concepts from a source domain to a target domain. The survey is grounded in a discussion of metaphor-based design involving the identification and reflection of candidate metaphors. We consider metaphors that have a source domain in one branch of medicine, e.g., the virtual mirror that solves problems in orthopedics and laparoscopy with a mirror that resembles the dentist's mirror. Other metaphors employ the physical world as the source domain, such as crepuscular rays that inspire a solution for access planning in tumor therapy. Aviation is another source of inspiration, leading to metaphors, such as surgical cockpits, surgical control towers, and surgery navigation according to an instrument flight. This paper should raise awareness for metaphors and their potential to focus the design of computer-assisted systems on useful features and a positive user experience. Limitations and potential drawbacks of a metaphor-based user interface design for medical applications are also considered.

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Section: A Map Metaphor For Medical Diagnosismentioning

confidence: 99%

“…A conventional map has a scale that is approximately the same for the whole map. The familiarity with maps was employed for a wide variety of mapbased medical visualizations, such as human brain mapping [141], vessel maps [138], colon maps [11], tumor maps [121], and placenta maps [100].…”

Section: A Map Metaphor For Medical Diagnosismentioning

confidence: 99%

A Survey of Medical Visualization through the Lens of Metaphors

Preim,

Meuschke,

Weis

2024

IEEE Trans. Visual. Comput. Graphics

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“…[62] and further developed in Refs. [63,64]. Here, the colon is stretched and unfolded to provide an inspection mode similar to pathology.…”

Section: Overview On Virtual Endoscopy Systemsmentioning

confidence: 99%

“…An interesting variation of virtual colonoscopy is unfolding the generated dataset into the plane. Vilanova et al have proposed two different approaches how this unfolding can be achieved, while maintaining size ratios and overview in the generated images [63,64]. Unfortunately, there are some situations where a colon fold can occlude a small polyp or other features.…”

Section: Detailed Look Into Systems For Virtual Endoscopymentioning

confidence: 99%

Virtual Endoscopy in Research and Clinical Practice

Bartz

2005

Computer Graphics Forum

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Virtual endoscopy is among the most active topics in virtual medicine and medical imaging. It focuses on the virtual representation of minimally invasive procedures for training, planning and diagnosis without an actual invasive intervention. In the past few years, virtual endoscopy modes have been transferred from research systems in virtually every commercial medical imaging software, but with varying quality and flexibility. This report covers concepts used in current systems in research and products, and how they might be applied to daily practice in health care. Specifically, I will start with an introduction into virtual endoscopy and the related medical field. This will also include typical scenarios of virtual endoscopy applications as they appear in clinical practice. This part will be followed by a discussion of the technical issues of virtual endoscopy and how they are addressed in currently available systems. Among these issues are navigation through the respective body organ and the orientation aids for the users. In addition, I will highlight the different rendering techniques used and its impact on rendering speed and quality.

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“…A tool named CHUNNEL can be used to identify the loop running around the narrowest part of the protein channel. Topologically denoised 3D data can be flattened to a 2D domain for supplementary information or views [29][30][31][32][33][34][35][36][37][38]. In virtual colonoscopy, flattening the 3D colon wall surface into a 2D domain, via surface parameterization, not only benefits visualization-which assists in detection of abnormality, such as colorectal polyps-but also enables the computation of supplementary geometric and texture features in the 2D flattened colon wall, for improved computer-aided detection of polyps.…”

Section: Introductionmentioning

confidence: 99%

A Novel Robust Topological Denoising Method Based on Homotopy Theory for Virtual Colonoscopy

Ma,

Chen,

Lei

et al. 2023

Axioms

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Virtual colonoscopy plays an important role in polyp detection of colorectal cancer. Noise in the colon data acquisition process can result in topological errors during surface reconstruction. Topological denoising can be employed to remove these errors on surfaces for subsequent geometry processing, such as surface simplification and parameterization. Many methods have been proposed for this task. However, many existing methods suffer from failure in computation of all the non-trivial loops, due to high genus or complex topological structures. In this paper, we propose a novel robust topological denoising method for surfaces based on homotopy theory. The proposed method was evaluated on two datasets of colon meshes. We compared our method with the State-of-the-Art persistent-homology-based method. Our method can successfully compute the loops on all colon data for topological denoising, whereas the persistent homology method fails on some colon data. Moreover, our method detects all loops with shorter lengths than those detected by the persistent homology method. Our experimental results show that the proposed method is effective and robust in topological denoising, and that it has the potential for practical application to virtual colonoscopy.

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Virtual Colon Flattening

Cited by 16 publications

References 9 publications

A Survey of Medical Visualization through the Lens of Metaphors

A Survey of Medical Visualization through the Lens of Metaphors

Virtual Endoscopy in Research and Clinical Practice

A Novel Robust Topological Denoising Method Based on Homotopy Theory for Virtual Colonoscopy

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