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Feldkamp-type reconstruction algorithms for spiral cone-beam CT with variable pitch

Feldkamp-type reconstruction algorithms for spiral cone-beam CT with variable pitch,Jun Zhao,Yang Lu,Yannan Jin,Erwei Bai,Ge Wang

Feldkamp-type reconstruction algorithms for spiral cone-beam CT with variable pitch   (Citations: 1)
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Abstract. Bolus-chasing CT angiography,is an important new,imaging,mode,for imaging,cardiovascular structures and peripheral vessels. The adaptive bolus-chasing method implies a variable pitch spiral cone-beam CT scan. In this paper, we extend 2D-weighted, 3D-weighted and tilted plane FDK algorithms for variable pitch spiral cone-beam CT. Numerical simulation tests with high pitches and large cone angles are performed. Our results demonstrate that the tilted plane Feldkamp- type reconstruction algorithm shows the highest tolerance to the data incompleteness, the 3D-weighted half-scan FDK algorithm is the best choice for the practical variable pitch cone-beam CT, and the exact reconstruction algorithms perform less satisfactorily when a dataset is incomplete. However, the exact algorithms can be used for high accuracy reconstruction offline if a dataset is complete. Our work may,facilitate development,of practical variable pitch helical cone-beam CT. Keywords: Computed tomography (CT), computed tomographic angiography (CTA), cone-beam, helical scanning, variable
Cumulative Annual
    • ...Though non-planar acquisition orbits [21] and some exact reconstruction algorithms [20] have been developed, the cone-beam scanning configuration with a circular orbit remains one of the most popular configurations and has been widely employed for data acquisition [18], and the most widely used reconstruction algorithm remains to be FDK [2] reconstruction algorithm in this circumstance...

    Guorui Yanet al. Fast cone-beam CT image reconstruction using GPU hardware

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