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Fig. 2 | BMC Medical Imaging

Fig. 2

From: An evaluation of performance measures for arterial brain vessel segmentation

Fig. 2

Examples of manually created errors of various intensity levels that were introduced to the ground truth. Examples of false-positive segmentation of structures in green (ac): a moderate skull error, b severe sigmoid sinus error, c severe orbit error. Examples of false-negative segmentation of vessels in blue (df): d omission of internal carotid artery, e severe small vessel error, f omission of the posterior communicating arteries. Radius manipulation of segments (g, h): g subtle boundary error of the M1 segment of the middle cerebral artery, h severe boundary error of the internal carotid artery. Red: True positive voxels, Green: False-positive voxels, Blue: False-negative voxels

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