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Myocardial Twist from X-ray Angiography
[chapter]
2018
Bildverarbeitung für die Medizin 2018
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We present preliminary evidence that left ventricular twist can be observed and thus estimated from rotational coronary angiography. ...
First, we fit the model to 3D coronary artery centerlines reconstructed from rotational angiography and then use 3D/2D registration to optimize for the functional parameters driving the model. ...
In conclusion, we presented preliminary indication that LV twist can be estimated from rotational coronary angiography. ...
doi:10.1007/978-3-662-56537-7_91
dblp:conf/bildmed/GeimerUHAM18
fatcat:lcj67zsk6reorla4z63bzzhqha
Gastric volvulus presenting as an acute coronary syndrome with long-lasting electrocardiographic changes
2019
Journal of Geriatric Cardiology
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X-ray angiography of the digestive tract indicated that the gastric volvulus (mesenteroaxial type) changes after the reduction ( Figure 2B ). ...
On the second day after gastroscopy, the chest X-ray showed that the level of the left diaphragm was decreased, but still in the elevated position ( Figure 2A ). ...
X-ray angiography of the digestive tract indicated that the gastric volvulus (mesenteroaxial type) changes after the reduction ( Figure 2B ). ...
doi:10.11909/j.issn.1671-5411.2019.03.002
pmid:31080475
pmcid:PMC6500561
fatcat:b3nok44q4vghlmu4cdqlbde7wa
Safety, Efficacy and Indications of β-Blockers to Reduce Heart Rate prior to Coronary CT Angiography-An Overview
2012
Cardiovascular Journal
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In this article, we provide an overview of indications, safety, and efficacy of â-blockade prior to coronary CT angiography. ...
Moreover, implications for radiation exposure and left ventricular function analysis are discussed. (Cardiovasc. j. 2012; 5(1): 100-106) ...
Electrocardiographically Correlated X-ray Tube Current Modulation When retrospective gating is applied for coronary CT angiography, x-ray data are acquired throughout the entire cardiac cycle, which allows ...
doi:10.3329/cardio.v5i1.12280
fatcat:72qjctvzhng4dpttmaxk7pqglq
Left ventricular twist in left ventricular noncompaction
2013
European Heart Journal-Cardiovascular Imaging
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Conclusion Left ventricular twist is diminished in subjects with LVNC and normal LV rotation. ...
The effect of abnormal LV twist on adverse remodelling of the heart in left ventricular noncompaction (LVNC) is unknown. ...
Acknowledgements The authors gratefully acknowledge Joe Grundle and Katie Klein for the editorial preparation of the manuscript and Brian Miller and Brian Schurrer for their help in preparing illustrations ...
doi:10.1093/ehjci/jet076
pmid:23793875
fatcat:3war73jfzrgjpehptxb4lztu6a
Prospectively versus Retrospectively ECG-Gated 256-Slice CT Angiography to Assess Coronary Artery Bypass Grafts — Comparison of Image Quality and Radiation Dose
2012
PLoS ONE
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Methods: We studied 124 grafts with 577 segments in 64 patients with a heart rate (HR) ,85 bpm who underwent CT coronary angiography (CTCA); 34 patients with RGH-CTCA and 30 patients with PGA-CTCA. ...
helical (RGH) techniques for the assessment of coronary artery bypass grafts using 256-slice CT. ...
Introduction Coronary artery bypass grafting (CABG) is frequently performed to restore myocardial perfusion in patients with severe three-vessel disease or left main coronary artery (LMCA) stenosis. ...
doi:10.1371/journal.pone.0049212
pmid:23145126
pmcid:PMC3492273
fatcat:7w5cbr2bojcrtgnzgat45xw7su
Left ventricular noncompaction—a rare cause of triad: heart failure, ventricular arrhythmias, and systemic embolic events: a case report
2021
Journal of Medical Case Reports
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Coronary angiography was within normal range. A cardioverter defibrillator was implanted for prevention of sudden cardiac death. ...
with the left ventricular cavity. ...
In a normal heart, left ventricular twisting motion is caused by rotation in a clockwise direction (as seen from the apex) at the level of the mitral valve (basal level) and counterclockwise rotation of ...
doi:10.1186/s13256-021-02862-x
pmid:34099054
fatcat:f6smvi2qvvbpte7ibpmjhclpay
Angiography of the upper extremity
[chapter]
1979
Pain in Shoulder and Arm
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The X-ray tube is shifted and rotated to ensure correct focussing. The X-ray beam should be centred over the midline of the wrist, at an angle of 90 degrees to the film. ...
We have observed in our material that the median artery may originate from the common interosseous artery and that it can be large (Fig. 59) . ...
An analysis of the sites and branching of the vessels arising from the aortic arch showed that 8 patterns can be distinguished which occur with a frequency ranging from 73% to 0.3%. ...
doi:10.1007/978-94-009-9303-7_3
fatcat:3guu3hfqpvgltp6sijdily2g3q
Cardiovascular imaging 2018 in the International Journal of Cardiovascular Imaging
2019
The International Journal of Cardiovascular Imaging
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In 3D reconstruction of coronary arterial segments from standard X-ray angiography, the definition of the coronary centerline plays an important step in the total reconstruction procedure. ...
X-ray imaging Detter et al. evaluated in an animal experiment the value of fluorescent cardiac imaging (FCI) for intraoperative qualitative angiographic and quantitative myocardial perfusion assessment ...
doi:10.1007/s10554-019-01579-9
fatcat:bcptchielfa63a73ap2dfq2f2m
Regional wall motion and strain of transplanted hearts in pediatric patients using magnetic resonance tagging
1999
American Journal of Physiology. Regulatory Integrative and Comparative Physiology
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Compared with normal controls, the transplanted left ventricle maintains normal strain in the presence of abnormal twist. ...
Magnetic resonance tagging was performed to determine radial shortening, twist, and strain in four ventricular anatomic areas at two short-axis levels. Controls had counterclockwise twist. ...
Those patients who had coronary angiography had no evidence of stenosis. Seven patients underwent right ventricular biopsy. ...
doi:10.1152/ajpregu.1999.277.5.r1481
pmid:10564222
fatcat:ipbsxrei7jab3gpcfg6k4wuxza
Diagnostic Testing
2007
Journal of the American College of Cardiology
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Bland-Aultman agreement for EF are shown in figures 1 and 2. Conclusion: Two-D speckle tracking can measure ventricular volumes and EF from Bmode images. ...
Right atrial (RA), right ventricular (RV) to simulate left bundle branch block (LBBB) and left ventricular (LV) pacing leads were placed. ...
We also measured the CT attenuation of the coronary lumen, the surrounding connective tissue, and the standard deviation in the aortic root to calculate the contrast to noise ratio (CNR) in 9 coronary ...
doi:10.1016/j.jacc.2007.01.038
fatcat:4awusqxpqvhsxjy3mvtt266yjq
Imaging of the heart: historical perspective and recent advances
2015
Postgraduate medical journal
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Instead of one X-ray tube as in conventional MDCT, DSCT has two X-ray tubes scanning simultaneously. ...
are used in measuring myocardial torsion (twisting and untwisting). ...
Current research questions ▸ Is there a role of advanced echocardiography in predicting responses after cardiac resynchronisation therapy (CRT)? ...
doi:10.1136/postgradmedj-2015-133831
pmid:26647305
fatcat:7rudyad6hrdxlnyhis4ofzvawy
Subject Index
2008
Journal of the American College of Cardiology
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Can We Get Closer to Noninvasive Left Ventricular End-Diastolic Pressure Estimation? ...
Computed Tomographic Angiography by Using
Lower X-ray Energy During Scanning 906-276·A148
Underuse of Left Ventricular Function Assessment in Patients
With Newly Diagnosed Heart Failure 1005-140·A238 ...
Changing Prevalence of the Metabolic Syndrome in Ethnic Subgroups in the United States: Results From the National Health and Nutrition Examination Survey (1999) (2000) (2001) (2002) (2003) (2004) ...
doi:10.1016/j.jacc.2008.02.015
fatcat:a2pe3vwsgfh3hbum7c7jbjgfha
Role of Computerized Tomography in Evaluation of Coronary Bypass Grafts—Special Reference to Women
2020
Indian Journal of Cardiovascular Disease in Women WINCARS
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Computerized tomography-coronary angiography (CT-CAG) is gaining popularity as an alternative to conventional CAG to evaluate grafts in a post-coronary artery bypass graft (post-CABG) patient, since it ...
Achieving low heart rate and artifact-free image acquisition, proper reconstruction, and image interpretation are challenges to the radiologists and the technicians involved in coronary imaging. ...
Recent scanners have faster gantry rotation, wide field of scan at a higher X-ray tube potential but at a lower patient radiation dose and better images. ...
doi:10.1055/s-0040-1708574
fatcat:6hu6sqx7j5d3nd42nhpszwbzri
Identifying and tracking a guide wire in the coronary arteries during angioplasty from X-ray images
1997
IEEE Transactions on Biomedical Engineering
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His interests include modeling, simulation of the cardiovascular system, 3-D analysis of ventricular function, magnetic resonance imaging (MRI), coronary flow, coronary stems, interventional cardiology ...
Recent work on apical twist [16] , [17] emphasize the potential of the apical rotation or twist that can be readily measured with the GW approach in reflecting myocardial function. ...
Identifying and Tracking a Guide Wire in the Coronary Arteries During Angioplasty from X-Ray Images Daphna Palti-Wasserman, Alfred M. Brukstein, and Rafael P. ...
doi:10.1109/10.552245
pmid:9214795
fatcat:i6lwvatgv5hbjnu7pkvuaf3rsa
Subject index
2007
Journal of the American College of Cardiology
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Testing: Results
From the Investigation of National Coronary Disease
Identification##1013-75·210A
Determination of Optimal Viewing Angles for X-Ray Coronary
Angiography Based on a Quantitative Analysis ...
Quantititive Coronary
Analysis by Comparison With Intravascular
Ultrasound and Two-Dimensional Quantitive Coronary
Analysis##1013-179·219A
Determination of Optimal Viewing Angles for X-Ray Coronary ...
doi:10.1016/j.jacc.2007.01.047
fatcat:w6ingwinqrckdghdkhndushcfq
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