Automatic Left Atrial Wall Segmentation from Contrast-Enhanced CT Angiography Images

2017 ◽  
pp. 220-227
Author(s):  
Qian Tao ◽  
Rahil Shahzad ◽  
Floris F. Berendsen ◽  
Rob J. van der Geest
Keyword(s):  
Ct Angiography ◽  
Left Atrial ◽  
Atrial Wall ◽  
Contrast Enhanced Ct ◽  
Left Atrial Wall ◽  
Contrast Enhanced ◽  
Enhanced Ct

Reducing the incidence of venous air embolism in contrast-enhanced CT angiography using preflushing of the power injector

2020 ◽  
Vol 75 (6) ◽  
pp. 479.e1-479.e7
Author(s):  
X. Jia ◽  
X. Li ◽  
J. Li ◽  
C. Jin ◽  
J. Chen ◽  
...  
Keyword(s):  
Ct Angiography ◽  
Air Embolism ◽  
Venous Air Embolism ◽  
Contrast Enhanced Ct ◽  
Contrast Enhanced ◽  
Power Injector ◽  
Enhanced Ct

Transesophageal Echocardiography After Contrast-Enhanced CT Angiography in the Diagnosis of Type A Aortic Dissection

2011 ◽  
Vol 26 (5) ◽  
pp. 495-500 ◽  
Author(s):  
Edward Gologorsky ◽  
Riny Karras ◽  
Angela Gologorsky ◽  
Marco Ricci ◽  
Tomas A. Salerno
Keyword(s):  
Aortic Dissection ◽  
Transesophageal Echocardiography ◽  
Ct Angiography ◽  
Type A ◽  
Type A Aortic Dissection ◽  
Contrast Enhanced Ct ◽  
Contrast Enhanced ◽  
Enhanced Ct

Abstract 1835: Magnetic Resonance Imaging Detects Chronic Left Atrial Wall Injury Post Ablation of Atrial Fibrillation

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Christopher J McGann ◽  
Eugene Khoumovski ◽  
Robert Oakes ◽  
Edward DiBella ◽  
Robert MacLeod ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Pulse Sequence ◽  
3D Mri ◽  
Atrial Wall ◽  
Post Procedure ◽  
Left Atrial Wall ◽  
Contrast Enhanced ◽  
Wall Injury ◽  
Echo Pulse

Radiofrequency (RF) based ablation of atrial fibrillation (AF) through pulmonary vein antrum isolation (PVAI) is a promising treatment for this arrhythmia. Success of the procedure relies in part on the transmural extent of the RF lesions delivered to the left atrium (LA). We describe a novel technique using a 3D MRI to assess sites and extent of LA injury resulting from RF lesions after PVAI. Twelve patients (7 men, mean age 56±11 years) undergoing PVAI for AF were imaged pre and three months post procedure to detect LA scarring with delayed contrast-enhanced MRI using a 3D inversion recovery, navigated, gradient echo pulse sequence. LA injury post procedure was seen in all patients on MRI as areas of bright, signal enhancement, which correlated with the RF energy delivery map during PVAI (figure 1 ). Conclusion: This is the first study to show LA wall injury post PVAI using 3D MRI. These findings may prove important for tracking and monitoring outcomes of AF ablation. Figure 1. Posterior views of the left atrial wall in a patient one day pre (left) and three months post (right) ablation by delayed contrast-enhanced, navigated, 3D MRI. Regions of bright signal show injury resulting from RF ablation.

Computer-aided mesenteric small vessel segmentation on high-resolution 3D contrast-enhanced CT angiography scans

2012 ◽  
Author(s):  
Weidong Zhang ◽  
Jiamin Liu ◽  
Jianhua Yao ◽  
Tan Nguyen ◽  
Adeline Louie ◽  
...  
Keyword(s):  
High Resolution ◽  
Ct Angiography ◽  
Vessel Segmentation ◽  
Small Vessel ◽  
Contrast Enhanced Ct ◽  
Contrast Enhanced ◽  
Enhanced Ct ◽  
Computer Aided
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