Automated coronary artery tree segmentation in X-ray angiography using improved Hessian based enhancement and statistical region merging

2018 ◽  
Vol 157 ◽  
pp. 179-190 ◽  
Author(s):  
Tao Wan ◽  
Xiaoqing Shang ◽  
Weilin Yang ◽  
Jianhui Chen ◽  
Deyu Li ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Region Merging ◽  
X Ray ◽  
Coronary Artery Tree ◽  
Statistical Region Merging

Coronary Artery Centerline Tracking and Coronary Artery Tree Segmenting in X-ray Angiographic Images

2018 ◽  
Vol 8 (6) ◽  
pp. 1226-1232
Author(s):  
Junhua Chen ◽  
Yang Yang ◽  
Miao Tian ◽  
Xingming Qi ◽  
Youjun Liu
Keyword(s):  
Coronary Artery ◽  
X Ray ◽  
Centerline Tracking ◽  
Coronary Artery Tree

scholarly journals A Voxel-Map Quantitative Analysis Approach for Atherosclerotic Noncalcified Plaques of the Coronary Artery Tree

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Ying Li ◽  
Wei Chen ◽  
Kaijun Liu ◽  
Yi Wu ◽  
Yonglin Chen ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Three Dimensional ◽  
Coronary Intervention ◽  
Quantitative Information ◽  
Atherosclerotic Plaques ◽  
Anatomical Location ◽  
Contrast Enhanced ◽  
Percutaneous Coronary ◽  
Map Analysis ◽  
Coronary Artery Tree

Noncalcified plaques (NCPs) are associated with the presence of lipid-core plaques that are prone to rupture. Thus, it is important to detect and monitor the development of NCPs. Contrast-enhanced coronary Computed Tomography Angiography (CTA) is a potential imaging technique to identify atherosclerotic plaques in the whole coronary tree, but it fails to provide information about vessel walls. In order to overcome the limitations of coronary CTA and provide more meaningful quantitative information for percutaneous coronary intervention (PCI), we proposed a Voxel-Map based on mathematical morphology to quantitatively analyze the noncalcified plaques on a three-dimensional coronary artery wall model (3D-CAWM). This approach is a combination of Voxel-Map analysis techniques, plaque locating, and anatomical location related labeling, which show more detailed and comprehensive coronary tree wall visualization.

Abstract 2805: Assessment of Coronary Artery Disease Using Magnetic Resonance Coronary Angiography: A Multicenter Trial

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Shingo Kato ◽  
Hajime Sakuma ◽  
Nanaka Ishida ◽  
Masaki Ishida ◽  
Motonori Nagata ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Magnetic Resonance ◽  
Coronary Angiography ◽  
Multicenter Study ◽  
Sublingual Administration ◽  
X Ray ◽  
Coronary Mra ◽  
Artery Disease ◽  
Roc Area

Background: CT coronary angiography is widely used to assess the presence of significant coronary artery disease (CAD). However, CT approach is associated with low but nonnegligible cancer risk. The purpose of this prospective multicenter study was to evaluate the diagnostic performance of coronary magnetic resonance angiography (MRA) in the ability to identify patients with significant CAD compared with coronary angiography. Materials and Methods: The subjects were recruited from 7 institutions. Free breathing coronary MR angiograms covering the entire coronary artery tree were obtained in 138 patients who were suspicious of CAD. Non-contrast enhanced images were acquired with a commercial 1.5T MR imager and five-element cardiac coils after sublingual administration of isosorbide dinitrate. Conventional X-ray coronary angiography was performed within 4 weeks after coronary MRA. MR and X-ray angiograms were sent to a core laboratory for blinded interpretation. Coronary MR angiograms were evaluated by two experienced investigators by using sliding partial MIP reconstruction. Quantitative X-ray coronary angiography analysis was performed with significant CAD defined as luminal narrowing of at least 50% of the diameter. Results: The mean imaging time of coronary MRA was 9.5 ± 4.9 minutes. The prevalence of significant disease on X-ray angiography was 45% (62/138). On a vessel-based analysis, the area under receiver operating characteristic (ROC) curve for the MRA compared with X-ray angiography was 0.90 (95% CI; 0.86 to 0.93). On a patient based analysis, the ROC area was 0.88 (95% CI; 0.81– 0.93). The sensitivity, specificity, positive and negative predictive values of coronary MRA by vessel analysis were 78% (95% CI; 68 – 86%), 86% (82–90%), 60% (51– 69%), 94% (90–96%). These values by patient analysis were 87% (95% CI; 76–94%), 71% (59 – 81%), 71% (59 – 81%), 87% (76–94%). Conclusions: In the current multicenter study using commercial 1.5T MR imagers and sliding partial MIP reconstruction, the diagnostic accuracy of coronary MRA compared to quantitative coronary angiography is good, reflected by an ROC area of 0.88 on patient-based analysis. High negative predictive value indicates that coronary MRA can be used for screening CAD.

Mechanisms of ergonovine-induced hyperconstriction of coronary artery after x-ray irradiation in pigs

1995 ◽  
Vol 90 (2) ◽  
pp. 167-175 ◽  
Author(s):  
S. Egashira ◽  
W. Mitsuoka ◽  
H. Tagawa ◽  
T. Kuga ◽  
H. Tomoike ◽  
...  
Keyword(s):  
Coronary Artery ◽  
X Ray
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