Profile Flags: a Novel Metaphor for Probing of T2 Maps

Mlejnek, Matej; Ermest, P.; Vilanova, Anna; Rijt, R. van der; Bosch, H. van den; Gerritsen, Frans; Gröller, M. Eduard

doi:10.1109/vis.2005.81

Cited by 8 publications

(6 citation statements)

References 18 publications

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“…In medical visualization, the profile flag glyph has been proposed as a combination of basic geometric primitives combined with a surface used to project more complex information (see Fig. 7(b)) [20]. The glyph consists of several basic primitives and allows an efficient exploration of knee MRI scans.…”

Section: Composite Glyph Shapementioning

confidence: 99%

“…Many glyph visualization techniques exist, where the initial glyph placement can be interactively modified by moving one or two proxy glyphs through the data set [20,24]. These glyphs, which are also referred to as probing tools [25], adapt their visual appearance based on the PMF to the new location they are moved to.…”

Section: Glyph Interactionmentioning

confidence: 99%

“…A more complex probing glyph, is the previously mentioned profile flag glyph described in [20] (recall Fig. 7(b)).…”

Section: Glyph Interactionmentioning

confidence: 99%

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Survey of glyph-based visualization techniques for spatial multivariate medical data

Ropinski¹,

Oeltze

Preim

2011

Computers & Graphics

118

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In this survey article, we review glyph-based visualization techniques which have been exploited when visualizing spatial multivariate medical data. To classify these techniques, we derive a taxonomy of glyph properties that is based on classification concepts established in information visualization. By considering both the glyph visualization as well as the interaction techniques that are employed to generate or explore the glyph visualization, we are able to classify glyph techniques into two main groups: those supporting pre-attentive and those supporting attentive processing. With respect to this classification, we review glyph-based techniques described in the medical visualization literature. Based on the outcome of the literature review, we propose design guidelines for glyph visualizations in the medical domain.

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Section: Composite Glyph Shapementioning

confidence: 99%

Section: Glyph Interactionmentioning

confidence: 99%

See 1 more Smart Citation

Survey of glyph-based visualization techniques for spatial multivariate medical data

Ropinski¹,

Oeltze

Preim

2011

Computers & Graphics

118

View full text Add to dashboard Cite

show abstract

“…Similarly, there is the established notion of data probing, which was readily applied to flow fields by De Leeuw and Van Wijk [5]. As opposed to their glyph based probing, other approaches were proposed to locally probe data characteristics, such as the work presented by Mlejnek et al [20]. They introduced profile flags, locally probing knee cartilage information obtained from MRI data.…”

Section: Related Workmentioning

confidence: 99%

Interactive Virtual Probing of 4D MRI Blood-Flow

Pelt

Bescós

Breeuwer

et al. 2011

IEEE Trans. Visual. Comput. Graphics

Self Cite

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Fig. 1. Interactive virtual probe with flow visualization approaches, enabling exploration of cardiovascular 4D MRI blood-flow data. Color in the leftmost rendition encodes the blood-flow vorticity, while color in other renditions conveys the local blood-flow speed.Abstract-Better understanding of hemodynamics conceivably leads to improved diagnosis and prognosis of cardiovascular diseases. Therefore, an elaborate analysis of the blood-flow in heart and thoracic arteries is essential. Contemporary MRI techniques enable acquisition of quantitative time-resolved flow information, resulting in 4D velocity fields that capture the blood-flow behavior. Visual exploration of these fields provides comprehensive insight into the unsteady blood-flow behavior, and precedes a quantitative analysis of additional blood-flow parameters. The complete inspection requires accurate segmentation of anatomical structures, encompassing a time-consuming and hard-to-automate process, especially for malformed morphologies. We present a way to avoid the laborious segmentation process in case of qualitative inspection, by introducing an interactive virtual probe. This probe is positioned semi-automatically within the blood-flow field, and serves as a navigational object for visual exploration. The difficult task of determining position and orientation along the view-direction is automated by a fitting approach, aligning the probe with the orientations of the velocity field. The aligned probe provides an interactive seeding basis for various flow visualization approaches. We demonstrate illustration-inspired particles, integral lines and integral surfaces, conveying distinct characteristics of the unsteady blood-flow. Lastly, we present the results of an evaluation with domain experts, valuing the practical use of our probe and flow visualization techniques.

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“…Mlejnek et al [21], [22] proposed the Profile Flag, an intuitive tool for browsing and annotating of temporal data. It enables the visualization of spatial or temporal curves closely connected to the rendering of the anatomic structure of the data without removing any parts thereof.…”

Section: Probing and Annotating Of Perfusion Datamentioning

confidence: 99%

Survey of the Visual Exploration and Analysis of Perfusion Data

Preim

Oeltze

Mlejnek

et al. 2009

IEEE Trans. Visual. Comput. Graphics

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Abstract-Dynamic contrast-enhanced image data (perfusion data) are used to characterize regional tissue perfusion. Perfusion data consist of a sequence of images, acquired after a contrast agent bolus is applied. Perfusion data are used for diagnostic purposes in oncology, ischemic stroke assessment, or myocardial ischemia. The diagnostic evaluation of perfusion data is challenging, since the data are complex and exhibit various artifacts, e.g., motion artifacts. We provide an overview on existing methods to analyze and visualize CT and MR perfusion data. The integrated visualization of several 2D parameter maps, the 3D visualization of parameter volumes, and exploration techniques are discussed. An essential aspect in the diagnosis of perfusion data is the correlation between perfusion data and derived time-intensity curves as well as with other image data, in particular with high-resolution morphologic image data. We discuss visualization support with respect to the three major application areas: ischemic stroke diagnosis, breast tumor diagnosis, and the diagnosis of coronary heart disease.

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Profile Flags: a Novel Metaphor for Probing of T2 Maps

Cited by 8 publications

References 18 publications

Survey of glyph-based visualization techniques for spatial multivariate medical data

Survey of glyph-based visualization techniques for spatial multivariate medical data

Interactive Virtual Probing of 4D MRI Blood-Flow

Survey of the Visual Exploration and Analysis of Perfusion Data

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