Results 1 to 10 of about 204,687 (337)

Full feature selection for estimating KAP radiation dose in coronary angiographies and percutaneous coronary interventions [PDF]

open access: yesComputers in Biology and Medicine (2020): 103725, 2020
In interventional cardiology (IC) the radiation dose variation is very significant, and its estimation has been difficult due to the complexity of the treatments. In order to tackle this problem, the aim of this study was to identify the most important demographic and clinical features to estimate Kerma-Area Product (KAP) radiation dose in coronary ...
arxiv   +1 more source

Deep reinforcement learning for guidewire navigation in coronary artery phantom [PDF]

open access: yes, 2021
In percutaneous intervention for treatment of coronary plaques, guidewire navigation is a primary procedure for stent delivery. Steering a flexible guidewire within coronary arteries requires considerable training, and the non-linearity between the control operation and the movement of the guidewire makes precise manipulation difficult.
arxiv   +1 more source

Towards reliable calcification detection: calibration of uncertainty in coronary optical coherence tomography images [PDF]

open access: yes, 2022
Optical coherence tomography (OCT) has become increasingly essential in assisting the treatment of coronary artery disease (CAD). Image-guided solutions such as Percutaneous Coronary Intervention (PCI) are extensively used during the treatment of CAD. However, unidentified calcified regions within a narrowed artery could impair the outcome of the PCI ...
arxiv   +1 more source

Dynamic Coronary Roadmapping via Catheter Tip Tracking in X-ray Fluoroscopy with Deep Learning Based Bayesian Filtering [PDF]

open access: yes, 2020
Percutaneous coronary intervention (PCI) is typically performed with image guidance using X-ray angiograms in which coronary arteries are opacified with X-ray opaque contrast agents. Interventional cardiologists typically navigate instruments using non-contrast-enhanced fluoroscopic images, since higher use of contrast agents increases the risk of ...
arxiv   +1 more source

The Road to the Ideal Stent: A Review of Stent Design Optimisation Methods, Findings, and Opportunities [PDF]

open access: yes, 2023
Coronary stent designs have undergone significant transformations in geometry, materials, and drug elution coatings, contributing to the continuous improvement of stenting success over recent decades. However, the increasing use of percutaneous coronary intervention techniques on complex coronary artery disease anatomy continues to be a challenge and ...
arxiv   +1 more source

Measurement of Individual Alteration in Perioperative ECGs During Elective Percutaneous Coronary Intervention [PDF]

open access: yesarXiv, 2023
The increasing availability of wearable electrocardiography (ECG) devices enables the continuous monitoring of individual ECG alterations. This could be beneficial for patients suffering from acute ischemia but with non-standard ECG findings that do not fit to the subject-independent and absolute thresholds defined in clinical guidelines. In this work,
arxiv  

A Novel Sample-efficient Deep Reinforcement Learning with Episodic Policy Transfer for PID-Based Control in Cardiac Catheterization Robots [PDF]

open access: yesarXiv, 2021
Robotic catheterization is typically used for percutaneous coronary intervention procedures nowadays and it involves steering flexible endovascular tools to open up occlusion in the coronaries. In this study, a sample-efficient deep reinforcement learning with episodic policy transfer is, for the first time, used for motion control during robotic ...
arxiv  

AGMN: Association Graph-based Graph Matching Network for Coronary Artery Semantic Labeling on Invasive Coronary Angiograms [PDF]

open access: yes, 2023
Semantic labeling of coronary arterial segments in invasive coronary angiography (ICA) is important for automated assessment and report generation of coronary artery stenosis in the computer-aided diagnosis of coronary artery disease (CAD). Inspired by the training procedure of interventional cardiologists for interpreting the structure of coronary ...
arxiv   +1 more source

The CNN-based Coronary Occlusion Site Localization with Effective Preprocessing Method [PDF]

open access: yes, 2019
The Coronary Artery Occlusion (CAO) acutely comes to human, and it highly threats the human's life. When CAO detected, Percutaneous Coronary Intervention (PCI) should be conducted timely. Before PCI, localizing the CAO is needed firstly, because the heart is covered with various arteries.
arxiv   +1 more source

VOIDD: automatic vessel of intervention dynamic detection in PCI procedures [PDF]

open access: yesCVII-Stent Workshop MICCAI 2017, Sep 2017, Quebec City, Canada. 26 (6), pp.136 - 157, 2009, 2017
In this article, we present the work towards improving the overall workflow of the Percutaneous Coronary Interventions (PCI) procedures by capacitating the imaging instruments to precisely monitor the steps of the procedure. In the long term, such capabilities can be used to optimize the image acquisition to reduce the amount of dose or contrast media ...
arxiv   +1 more source

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