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Table 1 Geometric parameters used by the co-registration and overlap algorithm

From: Multimodality calibration for simultaneous fluoroscopic and nuclear imaging

Symbol Explanation
x pinhole, n x coordinate of the pinhole nr. n = 1, 2, 3, 4
y pinhole, n y coordinate of the pinhole nr. n = 1, 2, 3, 4
d x-ray detector Effective diameter x-ray detector
x x-ray detector Shift of the x-ray detector with respect to the center of the coordinate system
y x-ray detector Shift of the x-ray detector with respect to the center of the coordinate system