Projection-based bolus detection for computed tomographic angiography.

Donghui Lu; Erwei Bai; Jie Liu; Hengyong Yu; Yuchuan Wei; Zhijun Cai; Melhem J Sharafuddin; Jafar Golzarian; Alan Stolpen; Osama Saba; Michael Vannier; Ge Wang

doi:10.1097/01.rct.0000230000.08027.ad

PubMed · 16954941

Projection-based bolus detection for computed tomographic angiography.

Donghui Lu·Erwei Bai·Jie Liu·Hengyong Yu·Yuchuan Wei·Zhijun Cai·Melhem J Sharafuddin·Jafar Golzarian·Alan Stolpen·Osama Saba·Michael Vannier·Ge Wang

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Abstract

Computed tomographic (CT) angiography is important for imaging studies on cardiovascular structures, peripheral vessels, and solid organs. In practice, a CT angiography scan is triggered by the bolus arrival at a prespecified anatomical location, which is determined using CT fluoroscopy. In this article, we propose a projection-based method adapted from the Grangeat formula to detect the bolus arrival. Then, we evaluate our new method in numerical and animal studies. Our results indicate that this method allows significantly better temporal resolution and is computationally more efficient, as compared with the image-based methods.

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Algorithms Angiography Animals Contrast Media Fluoroscopy Lung Models, Theoretical Radiographic Image Enhancement Radiographic Image Interpretation, Computer-Assisted Sheep Time Factors Tomography, X-Ray Computed Evaluation Study Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't

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Donghui Lu, Erwei Bai, Jie Liu, Hengyong Yu, Yuchuan Wei, Zhijun Cai, Melhem J Sharafuddin, Jafar Golzarian, Alan Stolpen, Osama Saba, Michael Vannier, Ge Wang. Projection-based bolus detection for computed tomographic angiography.. https://doi.org/10.1097/01.rct.0000230000.08027.ad

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