Int J Comput Assist Radiol Surg - GPU accelerated segmentation and centerline extraction of tubular structures from medical images.

Tópicos

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Resumo

RPOSE: To create a fast and generic method with sufficient quality for extracting tubular structures such as blood vessels and airways from different modalities (CT, MR and US) and organs (brain, lungs and liver) by utilizing the computational power of graphic processing units (GPUs).METHODS: A cropping algorithm is used to remove unnecessary data from the datasets on the GPU. A model-based tube detection filter combined with a new parallel centerline extraction algorithm and a parallelized region growing segmentation algorithm is used to extract the tubular structures completely on the GPU. Accuracy of the proposed GPU method and centerline algorithm is compared with the ridge traversal and skeletonization/thinning methods using synthetic vascular datasets.RESULTS: The implementation is tested on several datasets from three different modalities: airways from CT, blood vessels from MR, and 3D Doppler Ultrasound. The results show that the method is able to extract airways and vessels in 3-5 s on a modern GPU and is less sensitive to noise than other centerline extraction methods.CONCLUSIONS: Tubular structures such as blood vessels and airways can be extracted from various organs imaged by different modalities in a matter of seconds, even for large datasets.

Resumo Limpo

rpose creat fast generic method suffici qualiti extract tubular structur blood vessel airway differ modal ct mr us organ brain lung liver util comput power graphic process unit gpusmethod crop algorithm use remov unnecessari data dataset gpu modelbas tube detect filter combin new parallel centerlin extract algorithm parallel region grow segment algorithm use extract tubular structur complet gpu accuraci propos gpu method centerlin algorithm compar ridg travers skeletonizationthin method use synthet vascular datasetsresult implement test sever dataset three differ modal airway ct blood vessel mr d doppler ultrasound result show method abl extract airway vessel s modern gpu less sensit nois centerlin extract methodsconclus tubular structur blood vessel airway can extract various organ imag differ modal matter second even larg dataset

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