Semi-automatic detection and segmentation algorith m of saccular aneurysms in 2D cerebral DSA images
To detect and segment cerebral saccular aneurysms (CSAs) in 2D Digital Subtraction Angiography (DSA) images. Patients and methods: Ten patients underwent Intra-arterial DSA procedures. Patients were injected with Iodine-containing radiopaque material. A scheme for semi-automatic detection and segmentation of intracranial aneurysms is proposed in this study. The algorithm consisted of three major image processing stages: image enhancement, image segmentation and image classification. Applied to the 2D Digital Subtraction Angiography (DSA) images, the algorithm was evaluated in 19 scene files to detect 10 CSAs. Results: Aneurysms were identified by the proposed detection and segmentation algorithm with 89.47% sensitivity and 80.95% positive predictive value (PPV) after executing the algorithm on 19 DSA images of 10 aneurysms. Results have been verified by specialized radiologists. However, 4 false positive aneurysms were detected when aneurysms’ location is at Anterior Communicating Artery (ACA). Conclusion: The suggested algorithm is a promising method for detection and segmentation of sac-cular aneurysms; it provides a diagnostic tool for CSAs. 2016 The Egyptian Society of Radiology and Nuclear Medicine. Production and hosting by Elsevier.
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This product was added to our catalog on Saturday 12 August, 2017.