使用少量投影資訊的3D血管重建技術

The Technique of 3D Blood Vessel Reconstruction with Few Projection Data

陳寰宇(Huan-Yu Chen)

指導教授 ： 荊宇泰

國立交通大學/資訊學院/生醫工程研究所/碩士(2011年)

https://doi.org/10.6842/NCTU.2011.00953

摘要

電腦斷層掃描技術在現今的醫療領域中是非常重要的技術，透過非侵入式的觀察方法，我們得以在不破壞觀測物的情況下，記錄下物體內完整的資訊。科技日新月異，觀測的技術也日益精進，如今我們已經可以觀察到奈米等級大小的世界。不幸的，因為觀測物的微小，在觀測的過程中暴露在X光的照射下，在拍攝的過程中，物體不斷的衰退；如此情況造成難以觀察物體原始型態。因此在觀測微小物體時，勢必的要減少觀測次數。
由於過往的重建技術建立在足夠多的投影資訊上，因此本論文主要介紹在少量投影資訊下，如何有效的重建物體影像。在內文中介紹了包括本文提出的方法在內的三種重建技術；FBP、ART以及特徵重建法。希望透過此項技術的發展，得以在醫學影像研究上有更進一步的突破。

關鍵字

斷層掃描重建技術

並列摘要

The rule of Computer Tomography on medical is very impotent. We can use non-invasive procedures to observe the inside of body without injuring. With the development of scientific and technological progress, we can observe the world of nanometer. Unfortunately, the power of x-ray is too strong for microstructure, which will damage the cell. So we have to reduce the time of observation.
We have to get a lot of projection, otherwise we can’t do well on reconstruction. So we show the technique of reconstruction with few projection . There are three techniques in this article. We hope the technique will be improvement with the development of this method.

並列關鍵字

CT reconstruction

參考文獻

[1] A. C. Kak and Malcolm Slaney, “Principles of Computerized Tomographic Imaging”, IEEE Press, 1988.

[3] SUBHASIS CHAUDHURI, SHANKAR CHATTERJEE, NORMAN KATZ. MARK NELSON, AND MICHAEL GOLDBAUM. “Detection of Blood Vessels in Retinal Images Using Two-Dimensional Matched Filters”, IEEE TRANSACTIONS ON MEDICAL IMAGE

[2] Emil Y. Sidky1, Chien-Min Kao1, Xiaochuan Pan1, “Accurate image reconstruction from few-views and limited-angle data in divergent-beam CT”, Journal of X-Ray Science and Technology, 2006.

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