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US5368033A Magnetic resonance angiography method and apparatus employing an integration projection 失效
磁共振血管造影术和采用整合投影的装置

Magnetic resonance angiography method and apparatus employing an
integration projection
摘要:
Magnetic Resonance Angiography (MRA) method and apparatus for determining an angiogram, in the form of a two-dimensional array of pixel intensities, from time-of-flight or phase contrast MRA volumetric image data utilizes a weighted sum, pixel by pixel, of integration projection (IP) and maximum intensity projection (MIP) 2D pixel arrays formed in the same viewing direction. The forming of the integration projection pixel array is preceded by optional background suppression and optional application of a depth cueing intensity weighting function varying along the viewing direction. The background suppression procedure contains a non-linear unsharp filtering portion followed by an intensity thresholding step.
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