Filtered By:
Procedure: Angiography

This page shows you your search results in order of relevance. This is page number 8.

Order by Relevance | Date

Total 31979 results found since Jan 2013.

A coronary artery segmentation method based on region growing with variable sector search area.
CONCLUSIONS: Quantitative evaluations are conducted on coronary angiography and the results show that the proposed method achieves a higher DSC ratio and a more reliable sensitivity ratio. PMID: 32364179 [PubMed - as supplied by publisher]
Source: Technology and Health Care - April 21, 2020 Category: Medical Devices Authors: Ma G, Yang J, Zhao H Tags: Technol Health Care Source Type: research

What Are the Main Acyanotic Congenital Heart Diseases?
Discussion Congenital heart diseases (CHD) are malformations of the heart and great vessels. It occurs in about 5-8/1000 live births. Cyanotic congenital heart disease is often noted perinatally because of cyanosis, respiratory distress and/or poor feeding or other distress type problems. A review can be found here. Acyanotic congenital heart disease (ACHD) can present at birth but often is seen in older children or adults unless the lesions are severe, especially obstructive lesions. Severe lesions may also cause cyanosis and distress type problems in patients also. Shunting lesions cause problems by diverting blood flo...
Source: PediatricEducation.org - August 17, 2020 Category: Pediatrics Authors: Pediatric Education Tags: Uncategorized Source Type: news

Wide-Field Fluorescein Angiography in the Diagnosis and Management of Retinal Vein Occlusion: A Retrospective Single-Center Study.
CONCLUSIONS Decision-making about management of patients with RVO should be done after physical examination and analysis of central and peripheral retina FA. In 20.6% of patients, assessment of the peripheral retina resulted in a change in treatment. The first changes suggestive of progression of thrombotic disease to the ischemic form appeared on the periphery in images from WF-FA. PMID: 33449920 [PubMed - as supplied by publisher]
Source: Medical Science Monitor - January 16, 2021 Category: Research Tags: Med Sci Monit Source Type: research

A multi-modality medical imaging head and neck phantom: Part 1. Design and fabrication
Phys Med. 2022 Feb 19:S1120-1797(22)01422-3. doi: 10.1016/j.ejmp.2022.02.010. Online ahead of print.ABSTRACTA novel anthropomorphic head and neck phantom which features the emulation of blood flow and perfusion is proposed. The phantom is helpful in both education and research and contains major blood vessels and a porous silicone elastomer brain compartment with microvascular capillary flow. The porous brain compartment is fabricated by use of a novel cast-moulding-dissolution technique. The skull and vertebra are fabricated by a combination of 3D printing and cast-moulding and are tissue equivalent with CT numbers rangin...
Source: Health Physics - February 22, 2022 Category: Physics Authors: Yves De Deene Morgan Wheatley Thomas Greig Daniel Hayes William Ryder Han Loh Source Type: research

Creating Virtual Models and 3D Movies Using DemoMaker for Anatomical Education
Adv Exp Med Biol. 2023;1431:161-175. doi: 10.1007/978-3-031-36727-4_8.ABSTRACTThree-dimensional (3D) anatomy models have been used for education in health professional schools globally. Virtual technology has become more popular for online teaching since the COVID-19 pandemic. This chapter will describe a project in which a series of virtual anatomical models of organs and structures were developed for educational purposes, and it will describe in detail how to build three-dimensional (3D) movies using DemoMaker. Although setting up the 3D system was complicated and challenging, the process of reconstructing 3D models from...
Source: Adv Data - August 29, 2023 Category: Epidemiology Authors: David L Miles Dongmei Cui Source Type: research

Coronary computed tomography angiography with prospective electrocardiography triggering: a systematic review of image quality and radiation dose.
Abstract The purpose of this study was to perform a systematic review of the diagnostic accuracy, image quality and radiation dose of prospective electrocardiography (ECG)-triggered coronary computed tomography angiography (CCTA). We searched databases containing studies of CCTA that used prospective ECG-triggering between 2008 and 2011. The effective dose and image quality reported in each study were analysed and compared between the types of multislice CT scanners. We identified 23 studies through this search, with mean assessable coronary segments and effective dose at 96.8% (95% confidence level [CI] 83%, 100%...
Source: Singapore Medical Journal - January 1, 2013 Category: Journals (General) Authors: Sabarudin A, Sun Z, Ng KH Tags: Singapore Med J Source Type: research

Radiology Images in Access Surgery
AccessSurgery® from McGraw-Hill is an integrated online resource that provides medical students, surgical residents, and practicing surgeons with quick answers to surgical inquiries from trusted sources. Organized around the accepted ACGME’s (Accreditation Council for Graduate Medical Education) Core Curriculum, AccessSurgery delivers content in context. A new Radiology Images section allows surgeons to practice their ability to identify radiological abnormalities and confirm the radiologist’s diagnosis. View each set of images with the abnormalities clearly labeled, or test yourself on your ability to locate ...
Source: What's New on JEFFLINE - August 12, 2013 Category: Databases & Libraries Authors: lgm002 Tags: All News Clinicians Students Teaching Faculty Source Type: news

Safety and efficacy of early administration of tirofiban in patients with acute ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention: a meta-analysis.
CONCLUSIONS: Early administration of tirofiban in patients undergoing PPCI for STEMI was safe, but no beneficial effects on post-procedural angiographic or clinical outcomes could be identified as compared with late administration. Besides the negative finding, more high-quality randomized clinical trials are still needed to explore the efficacy of adequate, earlier administration of tirofiban in patients undergoing PPCI. PMID: 24622446 [PubMed - in process]
Source: Chinese Medical Journal - March 1, 2014 Category: Journals (General) Authors: Liu Y, Su Q, Li L Tags: Chin Med J (Engl) Source Type: research

Computerized analysis of coronary artery disease: Performance evaluation of segmentation and tracking of coronary arteries in CT angiograms.
CONCLUSIONS: The authors' MSCAR-RBG method achieved high sensitivity for coronary artery segmentation and tracking. Studies are underway to further improve the accuracy for the arterial segments affected by motion artifacts, severe calcified and noncalcified soft plaques, and to reduce the false tracking of the veins and other noisy structures. Methods are also being developed to detect coronary artery disease along the tracked vessels. PMID: 25086543 [PubMed - in process]
Source: Medical Physics - August 1, 2014 Category: Physics Authors: Zhou C, Chan HP, Chughtai A, Kuriakose J, Agarwal P, Kazerooni EA, Hadjiiski LM, Patel S, Wei J Tags: Med Phys Source Type: research

Computerized detection of noncalcified plaques in coronary CT angiography: Evaluation of topological soft gradient prescreening method and luminal analysis.
CONCLUSIONS: The topological soft-gradient prescreening method in combination with the luminal analysis for FP reduction was effective for detection of NCPs in cCTA, including NCPs causing positive or negative vessel remodeling. The accuracy of vessel segmentation, tracking, and centerline identification has a strong impact on NCP detection. Studies are underway to further improve these techniques and reduce the FPs of the CADe system. PMID: 25086532 [PubMed - in process]
Source: Medical Physics - August 1, 2014 Category: Physics Authors: Wei J, Zhou C, Chan HP, Chughtai A, Agarwal P, Kuriakose J, Hadjiiski L, Patel S, Kazerooni E Tags: Med Phys Source Type: research

Active testing search for point cloud matching.
We present a general approach for solving the point-cloud matching problem for the case of mildly nonlinear transformations. Our method quickly finds a coarse approximation of the solution by exploring a reduced set of partial matches using an approach to which we refer to as Active Testing Search (ATS). We apply the method to registration of graph structures by branching point matching. It is based solely on the geometric position of the points, no additional information is used nor the knowledge of an initial alignment. In the second stage, we use dynamic programming to refine the solution. We tested our algorithm on ang...
Source: Inf Process Med Imaging - December 2, 2014 Category: Radiology Tags: Inf Process Med Imaging Source Type: research

Comparative efficacy and safety of the left versus right radial approach for percutaneous coronary procedures: a meta-analysis including 6870 patients.
Authors: Xia SL, Zhang XB, Zhou JS, Gao X Abstract The radial approach is widely used in the treatment of patients with coronary artery disease. We conducted a meta-analysis of published results on the efficacy and safety of the left and right radial approaches in patients undergoing percutaneous coronary procedures. A systematic search of reference databases was conducted, and data from 14 randomized controlled trials involving 6870 participants were analyzed. The left radial approach was associated with significant reductions in fluoroscopy time [standardized mean difference (SMD)=-0.14, 95% confidence interval (...
Source: Brazilian Journal of Medical and Biological Research - June 26, 2015 Category: Research Tags: Braz J Med Biol Res Source Type: research

Radiation dose and diagnostic image quality associated with iterative reconstruction in coronary CT angiography: A systematic review
In conclusion, this review analysis shows that CCTA with the use of IR leads to a significant reduction in radiation dose as compared to the use of FBP. Diagnostic image quality of IR at reduced dose (30–41%) is comparable to FBP at standard dose in the diagnosis of CAD.
Source: Australasian Radiology - March 31, 2016 Category: Radiology Authors: Kamarul Amin Abdullah, Mark F McEntee, Warren Reed, Peter L Kench Tags: Medical Imaging —Review Article Source Type: research

A New Method for Computed Tomography Angiography (CTA) Imaging via Wavelet Decomposition-Dependented Edge Matching Interpolation
This study provides a new edge matching interpolation algorithm based on wavelet decomposition of CTA. It includes mark, scale and calculation (MSC). Combining the real clinical image data, this study mainly introduces how to search for proportional factor and use the root mean square operator to find a mean value. Furthermore, we re- synthesize the high frequency and low frequency parts of the processed image by wavelet inverse operation, and get the final interpolation image. MSC can make up for the shortage of the conventional Computed Tomography (CT) and Magnetic Resonance Imaging(MRI) examination. The radiation absorp...
Source: Journal of Medical Systems - June 14, 2016 Category: Information Technology Source Type: research