Method for removing streak artifacts in medical images

Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation

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378901, 382131, 600425, A61B 5055

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active

059873477

ABSTRACT:
An MRI system acquires medical images that may contain streak artifacts. A filtered copy of the acquired image is compared with the acquired image to locate rows containing streak artifacts. Located rows in the acquired image are replaced with filtered rows to remove streak artifacts without affecting the rest of the acquired medical image.

REFERENCES:
Adaptive Fourier Threshold Filtering: A Method to Reduce Noise and Incoherent Artifacts in High Resolution Cardiac Images, Doyle, et al., MRM 31:546-550 (1994).
A Thesis: Towards Adaptive Filtration Of Two Dimensional Time-of-Flight Magnetic Resonance Angiography Data, I.Y. Khoury, May 1997.
13.10 Wavelet Transforms, Fourier and Spatial Applications, Ch. 13, pp. 591-606.
Annals of Biomedical Engineering, BMES Abstracts: Imaging, vol. 21, Supp. 1, 1993.
Annals of Biomedical Engineering, 1994 Annual Fall Meeting.
Orthonormal Bases of Compactly Supported Wavelets, Communications on Pure and Applied Mathematics, vol. XLI 909-996 (1988) I. Daubechies.

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