2015
DOI: 10.1007/978-3-319-24571-3_25
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Dictionary Learning Based Image Descriptor for Myocardial Registration of CP-BOLD MR

Abstract: Abstract. Cardiac Phase-resolved Blood Oxygen-Level-Dependent (CP-BOLD) MRI is a new contrast agent-and stress-free imaging technique for the assessment of myocardial ischemia at rest. The precise registration among the cardiac phases in this cine type acquisition is essential for automating the analysis of images of this technique, since it can potentially lead to better specificity of ischemia detection. However, inconsistency in myocardial intensity patterns and the changes in myocardial shape due to the he… Show more

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Cited by 5 publications
(4 citation statements)
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“…To achieve this, precise segmentation and nonlinear registration of the myocardium among the frames (the cardiac phases) in the cine stack would be required. Unfortunately, at present due to BOLD contrast variations, classical approaches to segmentation [15] and registration [14] fail to reach sufficient accuracy.…”
Section: Introductionmentioning
confidence: 99%
“…To achieve this, precise segmentation and nonlinear registration of the myocardium among the frames (the cardiac phases) in the cine stack would be required. Unfortunately, at present due to BOLD contrast variations, classical approaches to segmentation [15] and registration [14] fail to reach sufficient accuracy.…”
Section: Introductionmentioning
confidence: 99%
“…However, these patterns are subtle and changes occurring due to disease cannot be directly visualized [2]. In fact, identifying them requires significant post-processing, including myocardial segmentation and registration [5], prior to computer aided diagnosis via simple [3] or sophisticated pattern recognition methods [4]. This paper presents a segmentation method tailored to CP-BOLD MRI data, which is unsupervised and fully automated.…”
Section: Introductionmentioning
confidence: 99%
“…1A shows) it can significantly affect segmentation performance. Locally these temporal variations influence registration performance [5], which results in under performance of Atlas-based techniques. Early on approaches tailored for BOLD MRI myocardial segmentation were semi-automated and relied on boundary tracking [8].…”
Section: Introductionmentioning
confidence: 99%
“…A similar strategy was considered in [44] for brain segmentation in CT images. Finally, a dictionary of features was learned in [45] and an SSD measure was used for the registration of cardiac MRI.…”
mentioning
confidence: 99%