Volumetric Curved Planar Reformation for Virtual Endoscopy

Williams, David; Grimm, Sören; Coto, Ernesto; Roudsari, Abdul V.; Hatzakis, Haralambos

doi:10.1109/tvcg.2007.1068

Cited by 24 publications

(11 citation statements)

References 19 publications

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“…Hong et al [HGQ*06] propose a method for colon flattening which preserves angles and minimizes global distortion. Williams et al [WGC*08] present a technique for colon visualization based on a combination of CPR and DVR. Our approach renders the vessels straightened and arranges them horizontally in an anatomically sorted manner.…”

Section: Related Workmentioning

confidence: 99%

Vessel Visualization using Curvicircular Feature Aggregation

Mistelbauer

Morar

Varchola

et al. 2013

Computer Graphics Forum

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Radiological investigations are common medical practice for the diagnosis of peripheral vascular diseases. Existing visualization methods such as Curved Planar Reformation (CPR) depict calcifications on vessel walls to determine if blood is still able to flow. While it is possible with conventional CPR methods to examine the whole vessel lumen by rotating around the centerline of a vessel, we propose Curvicircular Feature Aggregation (CFA), which aggregates these rotated images into a single view. By eliminating the need for rotation, vessels can be investigated by inspecting only one image. This method can be used as a guidance and visual analysis tool for treatment planning. We present applications of this technique in the medical domain and give feedback from radiologists.

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Section: Related Workmentioning

confidence: 99%

Vessel Visualization using Curvicircular Feature Aggregation

Mistelbauer

Morar

Varchola

et al. 2013

Computer Graphics Forum

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“…Straka et al [SCC*04] introduce the VesselGlyph, a combination of Direct Volume Rendering (DVR) for the context and CPR for the vessels. Williams et al [WGC*08] propose a technique that does the opposite, their application case is colonoscopy. Daae Lampe et al [LCMH09] introduce the Curve‐Centric Volume Reformation, which deforms a volume with regards to a curve.…”

Section: Related Workmentioning

confidence: 99%

Comparative Visualization of Tracer Uptake in In Vivo Small Animal PET/CT Imaging of the Carotid Arteries

Diepenbrock

Hermann²,

Schäfers³

et al. 2013

Computer Graphics Forum

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Cardiovascular diseases are the main cause of death in the western world. Medical research on atherosclerosis is therefore of great interest and a very active research topic. We present a visualization system that supports scientists in exploring plaque development and evaluating the applicability of PET tracers for early diagnosis of cardiovascular diseases. In our application case a cone shaped cuff has been implanted around the carotid artery of ApoE knockout mice, fed with a high cholesterol western type diet. As a result, vascular lesions develop upstream and downstream from the cuff. Tracer uptake induced by these lesions needs to be analyzed in order to evaluate the effectiveness of different PET tracers. We discuss the approach previously utilized to perform this kind of analysis, the problems arising from in vivo image acquisition (in contrast to ex vivo) and the design process of our application. In close cooperation with domain experts we have developed new visualization techniques that display PET activity in the vessel wall and surrounding tissue in a single image. We use the vessel wall detected in the CT image to perform a normalized circular projection which allows the user to judge PET signal distribution in relation to the deformed vessel. Based on this projection a quantitative analysis of a defined region adjacent to the vessel wall can be performed and compared to the artery without the cuff.

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“…The resulting visualization enables showing the entire inner colon surface in a single view. An approach that combines CPR with volume rendering of the colon is described by Williams et al [26].…”

Section: Related Workmentioning

confidence: 99%

Articulated Planar Reformation for Change Visualization in Small Animal Imaging

Kok

Baiker

Hendriks

et al. 2010

IEEE Trans. Visual. Comput. Graphics

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Fig. 1. An articulated planar reformatted visualization of a mouse, where the skull has been selected and is shown at three different timepoints in the focus views. The visualization shows a slice of the volume with a corresponding bounding box. Additionally, the global overview shows a semi-transparent surface rendering of the atlas surfaces.Abstract-The analysis of multi-timepoint whole-body small animal CT data is greatly complicated by the varying posture of the subject at different timepoints. Due to these variations, correctly relating and comparing corresponding regions of interest is challenging. In addition, occlusion may prevent effective visualization of these regions of interest. To address these problems, we have developed a method that fully automatically maps the data to a standardized layout of sub-volumes, based on an articulated atlas registration. We have dubbed this process articulated planar reformation, or APR. A sub-volume can be interactively selected for closer inspection and can be compared with the corresponding sub-volume at the other timepoints, employing a number of different comparative visualization approaches. We provide an additional tool that highlights possibly interesting areas based on the change of bone density between timepoints. Furthermore we allow visualization of the local registration error, to give an indication of the accuracy of the registration. We have evaluated our approach on a case that exhibits cancer-induced bone resorption.

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Volumetric Curved Planar Reformation for Virtual Endoscopy

Cited by 24 publications

References 19 publications

Vessel Visualization using Curvicircular Feature Aggregation

Vessel Visualization using Curvicircular Feature Aggregation

Comparative Visualization of Tracer Uptake in In Vivo Small Animal PET/CT Imaging of the Carotid Arteries

Articulated Planar Reformation for Change Visualization in Small Animal Imaging

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