&lt;title&gt;Display holography for medical tomography&lt;/title&gt;

Hart, Stephen; Dalton, Michael N.

doi:10.1117/12.17974

Cited by 10 publications

(1 citation statement)

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“…With this method, obtaining natural changes in the image as the viewpoint from which it is observed is varied requires the creation of a large number of planar images; fundamentally the problem is that distortions will arise when the focal point is deeper. The other approach whereby multiple crosssectional images are recorded within a hologram involves the analysis of the volume data into cross-sectional images and the creation of planar images that are then each exposed to a laser in order to record them within a hologram [7]. Although this method suffers from the problem that it can only represent an object as being transparent, it has been shown in trials to be able to give a natural sense of depth that can actually be used in a medical setting.…”

Section: Introductionmentioning

confidence: 99%

Autostereoscopic visualization of volume data using computer‐generated holograms

Sakamoto

Aoki

2007

Electron Comm Jpn Pt III

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SUMMARYThere is a need for methods to display 3-dimensional data (volume data) obtained from such procedures as computer tomography (CT), magnetic resonance imaging (MRI), and 3-dimensional radar in a form that can easily be interpreted by humans. Methods that present such data via a 3-dimensional display are able to show the 3-dimensional image directly to humans and are well adapted to allow the recognition of 3-dimensional structure. In particular, 3-dimensional displays using holography are especially suited to assisting humans in interpreting 3-dimensional information. In this paper we propose a volume rendering computer-generated hologram (CGH) method that calculates a hologram directly from volume data using CGH technology without employing any intermediary images or photographic procedures. Since in this method the hologram is generated computationally, there is significant flexibility in how the 3-dimensional image can be displayed. As well as enabling images to be displayed with shading, a whole range of different 3-dimensional display techniques are possible; for example, at one extreme we can display only the surfaces in the volume data making the internal regions opaque, while by introducing transparency we can make the internal structures visible. We have confirmed the effectiveness of the proposed method by using it to create computergenerated holograms on the basis of 3-dimensional medical MRI data and conducting optical experiments.

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Section: Introductionmentioning

confidence: 99%