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Journal of Cardiovascular Computed Tomography

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https://www.readbyqxmd.com/read/28214139/accuracy-of-computed-tomography-angiography-to-identify-thin-cap-fibroatheroma-detected-by-optical-coherence-tomography
#1
Nobuo Tomizawa, Kodai Yamamoto, Shinichi Inoh, Takeshi Nojo, Sunao Nakamura
BACKGROUND: Thin-cap fibroatheroma (TCFA) is assumed to cause acute coronary syndromes. OBJECTIVE: To compare the accuracy of different models for diagnosing TCFA using parameters derived by CT, validated against optical coherence tomography (OCT). METHODS: One hundred twenty-nine plaques in 106 patients were analyzed using data acquired by 64-row CT with a reconstruction thickness of 0.67 mm and an increment of 0.33 mm. TCFA was defined by OCT as a plaque with lipid content in ≥2 quadrants and the thinnest part of the fibrous cap measuring ≤65 μm...
February 9, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28202247/radiological-characteristics-of-atrial-myxoma-in-cardiac-computed-tomography
#2
Kawa Haji, Arthur Nasis
BACKGROUND: Although the primary role of Cardiac Computed Tomography (CCT) is assessment of the coronary arteries, the technique also allows detailed examination of cardiac structures and other cardiac pathologies including cardiac myxoma. However, limited data exists regarding the CCT characteristics of cardiac myxoma. OBJECTIVE: To describe the radiological characteristics of a series of cardiac myxomas in CCT. METHODS: We retrospectively identified all patients at our tertiary urban referral centre with cardiac myxoma on CCT over a seven-year period between July 2008 and July 2015...
February 7, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28196684/giant-cell-aortitis-mimicking-intramural-hematoma
#3
Richard Thomas, Carolyn Glass, Richard N Mitchell, Michael L Steigner, Ayaz Aghayev
No abstract text is available yet for this article.
February 4, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28202246/analysis-of-myocardial-perfusion-parameters-in-an-ex-vivo-porcine-heart-model-using-third-generation-dual-source-ct
#4
Gert Jan Pelgrim, Taylor M Duguay, J Marco A Stijnen, Akos Varga-Szemes, Sjoerd Van Tuijl, U Joseph Schoepf, Matthijs Oudkerk, Rozemarijn Vliegenthart
PURPOSE: To evaluate the relationship between fractional flow reserve (FFR)-determined coronary artery stenosis severity and myocardial perfusion parameters derived from dynamic myocardial CT perfusion imaging (CTP) in an ex-vivo porcine heart model. METHODS: Six porcine hearts were perfused according to Langendorff. Circulatory parameters such as arterial blood flow (ABF) (L/min), mean arterial pressure (MAP) (mmHg) and heart rate (bpm) were monitored. Using an inflatable cuff and monitored via a pressure wire, coronary artery stenoses of different FFR grades were created (no stenosis, FFR = 0...
February 3, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28185849/sex-differences-in-the-aortic-root-size-implications-for-tavr
#5
EDITORIAL
Jonathon Leipsic, Stephanie Sellers, Philipp Blanke
No abstract text is available yet for this article.
February 1, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28209366/quantifying-aortic-valve-calcification-using-coronary-computed-tomography-angiography
#6
Abdulrahman M Alqahtani, Kevin E Boczar, Vinay Kansal, Kwan Chan, Girish Dwivedi, Benjamin J W Chow
INTRODUCTION: Aortic valve calcification (AVC) has been associated with major adverse cardiovascular events and all-cause mortality. We sought to develop and validate a method to quantify AVC using coronary CT angiography (CTA). METHODS: Of 59 patients who underwent both non-contrast and contrast enhanced coronary CTA, 25 patients served as the derivation cohort and 34 patients served as the validation cohort. For non-contrast enhanced CT, quantification of AVC was performed using the Agatston method for coronary artery calcification (CAC)...
January 30, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28185848/a-way-to-the-heart-atrioesophageal-fistula-after-af-ablation
#7
Erjia A Bao, Supriya Gupta, Jayanth H Keshavamurthy, Norman B Thomson
No abstract text is available yet for this article.
January 30, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28169175/in%C3%A2-vivo-coronary-lesion-differentiation-with-computed-tomography-angiography-and-intravascular-ultrasound-as-compared-to-optical-coherence-tomography
#8
Wouter G Wieringa, Chris P H Lexis, Erik Lipsic, Hindrik W van der Werf, Johannes G M Burgerhof, Vincent E Hagens, G Louis Bartels, Alexander Broersen, Remco A Schurer, Eng-Shiong Tan, Pim van der Harst, Ad F M van den Heuvel, Tineke P Willems, Gabija Pundziute
BACKGROUND: In vitro studies have shown the feasibility of coronary lesion grading with computed tomography angiography (CTA), intravascular ultrasound (IVUS) and optical coherence tomography (OCT) as compared to histology, whereas OCT had the highest discriminatory capacity. OBJECTIVE: We investigated the ability of CTA and IVUS to differentiate between early and advanced coronary lesions in vivo, OCT serving as standard of reference. METHODS: Multimodality imaging was prospectively performed in 30 NSTEMI patients...
January 22, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28139364/sex-differences-in-aortic-root-and-vascular-anatomy-in-patients-undergoing-transcatheter-aortic-valve-implantation-a-computed-tomographic-study
#9
Ashraf Hamdan, Israel Barbash, Ehud Schwammenthal, Amit Segev, Ran Kornowski, Abid Assali, Ella Shaviv, Paul Fefer, Orly Goitein, Eli Konen, Victor Guetta
BACKGROUND: Very little data exist on the impact of sex on aortic and arterial anatomy as relevant for transcatheter aortic valve implantation (TAVI). OBJECTIVE: To investigate whether patients with severe aortic stenosis (AS) referred for TAVI display sex-specific differences in aortic root and ilio-femoral artery size. METHODS: In 506 patients referred for pre-procedural CT evaluation before TAVI we performed a detailed assessment of aortic root anatomy: size of the annulus and the sinus of Valsalva (SoV), diameter of the sino-tubular junction (STJ), and distance of the coronary artery ostia to the aortic annulus plane; we also determined the dimensions of aorta, subclavian, and ilio-femoral arteries...
January 22, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28131801/partially-calcified-plaque-mimicking-the-napkin-ring-sign-on-coronary-ct-angiography
#10
Daisuke Utsunomiya, Seitaro Oda, Masafumi Kidoh, Yasuyuki Yamashita
No abstract text is available yet for this article.
January 22, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28126251/difference-of-coronary-stenosis-severity-between-systolic-and-diastolic-phases-in-quantitative-ct-angiography
#11
Hui Gu, Yang Gao, Haiping Wang, Zhennan Li, Liang Xu, Bo Xu, Ximing Wang, Bin Lu
BACKGROUND: To compare the difference of coronary diameter stenosis by quantitative analysis of CT angiography (QCT) in the systolic (QCT-S) and diastolic phase (QCT-D) of the cardiac cycle, with invasive catheter angiography (QCA) as reference standard. METHODS: A total of 109 patients (57.5 ± 10.6 years, 78.9% male) with suspected coronary artery disease (CAD) who underwent both CT angiography and invasive catheter angiography were retrospectively included in this study...
January 17, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28117242/computed-tomography-angiography-versus-angiography-for-guiding-percutaneous-coronary-interventions-in-bifurcation-lesions-a-prospective-randomized-pilot-study
#12
Rafal Wolny, Jerzy Pregowski, Mariusz Kruk, Cezary Kepka, Gary S Mintz, Gabor G Toth, Artur Debski, Michal Ciszewski, Krzysztof Kukula, Maksymilian P Opolski, Zbigniew Chmielak, Adam Witkowski
BACKGROUND: There is no data on the impact of coronary computed tomography angiography (coronary CTA), as an addition to angiography, on the outcomes of percutaneous coronary interventions (PCI) in bifurcation lesions. METHODS: Patients with stable coronary artery disease scheduled for elective bifurcation PCI were randomized 1:1 to planning the procedure based on coronary CTA and angiography (CTA group) or angiography alone (CA group). The primary efficacy endpoint was the immediate angiographic result...
January 17, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28110872/mid-arch-aortic-coarctation-an-uncommon-presentation
#13
Henda Neji, Monia Attia, Skander Zaouali, Hend Keskes, Ines Baccouche, Saoussen Hantous-Zannad, Khaoula BenMiled-M'rad
No abstract text is available yet for this article.
January 10, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28082007/prognostic-performance-of-coronary-computed-tomography-angiography-in-asymptomatic-individuals-as-compared-to-symptomatic-patients-with-an-appropriate-indication
#14
Gabriel Cordeiro Camargo, Thais Peclat, Ana Carolina Souza, Ronaldo de Souza Leão Lima, Ilan Gottlieb
INTRODUCTION: Current Appropriatene Usa Criteria exclude coronary computed tomography angiography (CTA) in asymptomatic individuals. We compared the prognostic value of coronary CTA in asymptomatic individuals to symptomatic patients with "definitely appropriate" indications for coronary CTA. METHODS: Consecutive patients without previously known CAD referred for a CTA exam were divided into 2 groups. One group consisted ofasymptomatic individuals, the other of symptomatic patients with a "definitely appropriate" indication for coronary CT (unable to exercise and/or with an uninterpretable electrocardiogram and at an intermediate pre-test probability of obstructive coronary artery disease)...
January 3, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28111212/global-quantification-of-left-ventricular-myocardial-perfusion-at-dynamic-ct-imaging-prognostic-value
#15
Felix G Meinel, Julian L Wichmann, U Joseph Schoepf, Francesca Pugliese, Ullrich Ebersberger, Gladys G Lo, Yeon Hyeon Choe, Yining Wang, Christian Tesche, Sabrina Segreto, Wolfgang G Kunz, Kolja M Thierfelder, Fabian Bamberg, Carlo N De Cecco
BACKGROUND: There is no published data on the prognostic value of global myocardial perfusion values at stress dynamic CT myocardial perfusion imaging (CTMPI). METHODS: Data of 144 patients from 6 centers who had undergone coronary CT angiography (coronary CTA) and CTMPI were assessed. Coronary CTA studies were acquired at rest; CTMPI was performed under vasodilator stress. Coronary CTA data were evaluated for coronary artery stenosis (≥50% luminal narrowing) on a per-vessel basis...
January 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28096049/monoenergetic-reconstructions-for-imaging-of-coronary-artery-stents-using-spectral-detector-ct-in-vitro-experience-and-comparison-to-conventional-images
#16
Tilman Hickethier, Bettina Baeßler, Jan Robert Kroeger, Jonas Doerner, Gregor Pahn, David Maintz, Guido Michels, Alexander C Bunck
PURPOSE: Accurate assessment of coronary stents using non-invasive CT imaging remains challenging despite new stent materials and improvements in CT technology. Virtual monoenergetic (monoE) images reconstructed from dual energy CT acquisitions potentially decrease artifacts caused by coronary stents. A novel spectral detector technology provides monoE and conventional images simultaneously for all conducted scans. The purpose of our study was to systematically investigate the influence of different monoE reconstructions on the visualization of coronary stent lumen in comparison to conventional images...
January 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28089233/epicardial-adipose-tissue-and-myocardial-ischemia-assessed-by-computed-tomography-perfusion-imaging-and-invasive-fractional-flow-reserve
#17
Rahul G Muthalaly, Nitesh Nerlekar, Dennis T L Wong, James D Cameron, Sujith K Seneviratne, Brian S Ko
BACKGROUND: Epicardial adipose tissue (EAT) is a metabolically active fat depot that is associated with incident coronary artery disease (CAD) and major adverse cardiovascular events. The relationship between EAT and myocardial ischemia remains unclear. This study investigated the relationship between EAT volume and the presence of perfusion defects on myocardial computed tomographic perfusion imaging (CTP) and functional stenoses on invasive fractional flow-reserve (FFR). METHODS: Data were obtained from a previous prospective cross-sectional study in patients with suspected CAD...
January 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28063844/automatic-3d-aortic-annulus-sizing-by-computed-tomography-in-the-planning-of-transcatheter-aortic-valve-implantation
#18
Sandro Queirós, Christophe Dubois, Pedro Morais, Tom Adriaenssens, Jaime C Fonseca, João L Vilaça, Jan D'hooge
BACKGROUND: Accurate imaging assessment of aortic annulus (AoA) dimension is paramount to decide on the correct transcatheter heart valve (THV) size for patients undergoing transcatheter aortic valve implantation (TAVI). We evaluated the feasibility and accuracy of a novel automatic framework for multidetector row computed tomography (MDCT)-based TAVI planning. METHODS: Among 122 consecutive patients undergoing TAVI and retrospectively reviewed for this study, 104 patients with preoperative MDCT of sufficient quality were enrolled and analyzed with the proposed software...
January 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28017553/coronary-computed-tomographic-angiography-the-evidence-dominates
#19
EDITORIAL
Leslee J Shaw, Todd Villines, Ron Blankstein, Suhny Abbara, Guy Weigold, Ahmad Slim, Jonathon Leipsic
No abstract text is available yet for this article.
January 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28017291/rationale-design-and-goals-of-the-heartflow-assessing-diagnostic-value-of-non-invasive-ffrct-in-coronary-care-advance-registry
#20
Kavitha M Chinnaiyan, Takashi Akasaka, Tetsuya Amano, Jeroen J Bax, Philipp Blanke, Bernard De Bruyne, Tomohiro Kawasaki, Jonathon Leipsic, Hitoshi Matsuo, Yoshihiro Morino, Koen Nieman, Bjarne L Norgaard, Manesh R Patel, Gianluca Pontone, Mark Rabbat, Campbell Rogers, Neils Peter Sand, Gilbert Raff
BACKGROUND: Coronary CT angiography (CTA) is a reliable tool for the detection of coronary artery disease (CAD) that conveys significant prognostic information. It does not provide data on the hemodynamic significance of a given lesion, particularly in intermediate-grade stenosis. Fractional flow reserve by CT (FFRCT) can accurately predict the hemodynamic significance of coronary lesions. The primary objective of this registry is to determine whether the integration of FFRCT as an adjunct to coronary CTA will lead to a significant change in the management of CAD in patients with stable angina...
January 2017: Journal of Cardiovascular Computed Tomography
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