Digital subtraction x-ray cardioangiography using a recursive background estimation algorithm

Vladislav Boutenko; Thierry Lebihen; Aymeric Perchant

doi:10.1117/12.310960

24 June 1998 Digital subtraction x-ray cardioangiography using a recursive background estimation algorithm

Vladislav Boutenko, Thierry Lebihen, Aymeric Perchant

Proceedings Volume 3338, Medical Imaging 1998: Image Processing; (1998) https://doi.org/10.1117/12.310960
Event: Medical Imaging '98, 1998, San Diego, CA, United States

Abstract

The digital subtraction angiography (DSA) method is not directly applicable to cardiovascular sequences because of the anatomy motion. We have developed a simple cardiovascular extension of DSA that updates the mask in real time rather than applying the same mask on the whole sequence. The algorithm uses a velocity based segmentation to discriminate vessels and background. This discrimination is possible because of the cardiovascular sequences fundamental property of faster vessel motion compared to the background motion. The real time mask estimation is done as a recursively implemented generalized maximum operation over the sequence. This operation yields a sequence of masks which is subtracted from the original sequence. The algorithm is causal and can therefore be implemented in real time acquisition systems. We have applied it to x-ray fluoroscopic and radiographic cardiovascular sequences obtaining a nearly DSA-quality sequences with substantially improved vessel contrast. The algorithm de facto provides a simple cardia specific motion detection method which can be used in noise reduction algorithms. The recursive background estimation approach can be generalized to other cardiac imaging modalities.

Citation Download Citation

Vladislav Boutenko, Thierry Lebihen, and Aymeric Perchant "Digital subtraction x-ray cardioangiography using a recursive background estimation algorithm", Proc. SPIE 3338, Medical Imaging 1998: Image Processing, (24 June 1998); https://doi.org/10.1117/12.310960

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