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Journal of Cardiovascular Computed Tomography

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https://www.readbyqxmd.com/read/28342678/spontaneous-coronary-artery-intramural-hematoma-in-a-patient-with-vascular-ehlers-danlos-syndrome-serial-findings-in-coronary-computed-tomographic-angiography
#1
Takayoshi Toba, Shumpei Mori, Atsushi Yatani, Yoichiro Sugisaki, Tomomi Akita, Naoto Sasaki, Hiromasa Otake, Toshiro Shinke, Hiroyuki Mori, Tatsuya Nishii, Atsushi K Kono, Ken-Ichi Hirata
No abstract text is available yet for this article.
March 21, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28279649/innovation-revolution-and-evolution
#2
EDITORIAL
Leslee J Shaw
No abstract text is available yet for this article.
February 28, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28283309/clinical-indications-for-coronary-artery-calcium-scoring-in-asymptomatic-patients-expert-consensus-statement-from-the-society-of-cardiovascular-computed-tomography
#3
Harvey Hecht, Michael J Blaha, Daniel S Berman, Khurram Nasir, Matthew Budoff, Jonathon Leipsic, Ron Blankstein, Jagat Narula, John Rumberger, Leslee J Shaw
This expert consensus statement summarizes the available data regarding the prognostic value of CAC in the asymptomatic population and its ability to refine individual risk prediction, addresses the limitations identified in the current traditional risk factor-based treatment strategies recommended by the 2013 ACC/AHA Prevention guidelines including use of the Pooled Cohort Equations (PCE), and the US Preventive Services Task Force (USPSTF) Recommendation Statement for Statin Use for the Primary Prevention of Cardiovascular Disease in Adults...
February 24, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28259630/large-saphenous-graft-aneurysm-that-compresses-the-right-heart
#4
Juana Ma Plasencia-Martínez, Manuel Gonzálvez-Ortega, Ana Sánchez-González, María Remedios Rodríguez-Mondéjar, Manuel Luis Rodríguez-Rodríguez, Ángel Antonio López-Cuenca
We present an illustrative case of a very rare complication of saphenous bypass: a huge aneurysm that severely compresses the right-heart cavities.
February 24, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28314613/improved-image-quality-with-simultaneously-reduced-radiation-exposure-knowledge-based-iterative-model-reconstruction-algorithms-for-coronary-ct-angiography-in-a-clinical-setting
#5
Florian André, Philipp Fortner, Mani Vembar, Dirk Mueller, Wolfram Stiller, Sebastian J Buss, Hans-Ulrich Kauczor, Hugo A Katus, Grigorios Korosoglou
BACKGROUND: The aim of this study was to assess the potential for radiation dose reduction using knowledge-based iterative model reconstruction (K-IMR) algorithms in combination with ultra-low dose body mass index (BMI)-adapted protocols in coronary CT angiography (coronary CTA). METHODS: Forty patients undergoing clinically indicated coronary CTA were randomly assigned to two groups with BMI-adapted (I: <25.0 kg/m(2), II: <28.0 kg/m(2), III: <30.0 kg/m(2), IV: ≥30...
February 23, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28268091/automatic-quantification-of-the-myocardial-extracellular-volume-by-cardiac-computed-tomography-synthetic-ecv-by-cct
#6
Thomas A Treibel, Marianna Fontana, Jennifer A Steeden, Arthur Nasis, Jason Yeung, Steven K White, Sri Sivarajan, Shonit Punwani, Francesca Pugliese, Stuart A Taylor, James C Moon, Steve Bandula
BACKGROUND: The quantification of extracellular volume fraction (ECV) by Cardiac Computed Tomography (CCT) can identify changes in the myocardial interstitium due to fibrosis or infiltration. Current methodologies require laboratory blood hematocrit (Hct) measurement - which complicates the technique. The attenuation of blood (HUblood) is known to change with anemia. We hypothesized that the relationship between Hct and HUblood could be calibrated to rapidly generate a synthetic ECV without formally measuring Hct...
February 22, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28259629/structured-reporting-of-ct-examinations-in-acute-pulmonary-embolism
#7
Bastian O Sabel, Jessica L Plum, Nikolaus Kneidinger, Gabriela Leuschner, Leandra Koletzko, Bijan Raziorrouh, Regina Schinner, Wolfgang G Kunz, Franziska Schoeppe, Kolja M Thierfelder, Wieland H Sommer, Felix G Meinel
OBJECTIVES: To evaluate the effect of structured reporting of CT pulmonary angiography (CTPA) studies on the content, clarity and clinical usefulness of radiology reports in acute pulmonary embolism (PE). METHODS: Conventional and structured reports were generated for 41 patients with a CTPA positive for acute PE. Conventional reports were dictated in a free-text form using speech recognition; structured reports contained a consistent ordering of observations with standardized subheadings...
February 22, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28256408/ct-for-prediction-of-plaque-erosion-resulting-in-myocardial-infarction-with-non-obstructive-coronary-arteries
#8
Maksymilian P Opolski, Artur Debski, Joanna Petryka, Krzysztof Kukula, Cezary Kepka, Adam Witkowski
No abstract text is available yet for this article.
February 22, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28229911/diagnostic-accuracy-of-carotid-intima-media-thickness-in-predicting-coronary-plaque-burden-on-coronary-computed-tomography-angiography-in-patients-with-obstructive-sleep-apnoea
#9
David J Murphy, Sophie J Crinion, Ciaran E Redmond, Gerard M Healy, Walter T McNicholas, Silke Ryan, Jonathan D Dodd
AIM: To assess the diagnostic accuracy of common carotid artery intima media thickness (CIMT) for coronary artery disease (CAD) detection in patients with obstructive sleep apnoea (OSA). MATERIALS & METHODS: Patients with clinically suspected OSA prospectively underwent polysomnography (PSG), ultrasound CIMT measurement and coronary computed tomography angiography (CTA). An average CIMT of ≥0.9 mm in either common carotid artery designated as a positive test...
February 11, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28229910/optimized-energy-of-spectral-ct-for-infarct-imaging-experimental-validation-with-human-validation
#10
Veit Sandfort, Srikanth Palanisamy, Rolf Symons, Amir Pourmorteza, Mark A Ahlman, Kelly Rice, Tom Thomas, Cynthia Davies-Venn, Bernhard Krauss, Alan Kwan, Ankur Pandey, Stefan L Zimmerman, David A Bluemke
OBJECTIVES: Late contrast enhancement visualizes myocardial infarction, but the contrast to noise ratio (CNR) is low using conventional CT. The aim of this study was to determine if spectral CT can improve imaging of myocardial infarction. MATERIALS AND METHODS: A canine model of myocardial infarction was produced in 8 animals (90-min occlusion, reperfusion). Later, imaging was performed after contrast injection using CT at 90 kVp/150 kVpSn. The following reconstructions were evaluated: Single energy 90 kVp, mixed, iodine map, multiple monoenergetic conventional and monoenergetic noise optimized reconstructions...
February 11, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28229912/mid-diastolic-left-ventricular-volume-and-mass-normal-values-for-coronary-computed-tomography-angiography
#11
Daniel Juneau, Fernanda Erthal, Owen Clarkin, Atif Alzahrani, Ali Alenazy, Alomgir Hossain, Joao R Inacio, Girish Dwivedi, Alexander J Dick, Frank J Rybicki, Benjamin J W Chow
BACKGROUND: The adoption of prospectively ECG-triggered acquisition coronary computed tomography angiography (CTA) has resulted in the inability to measure left ventricle (LV) end-diastolic volume and LV ejection fraction. However other prognostic measures such as LV mass and LV mid-diastolic volume (LVMDV) can still be assessed. The objective of this study is to establish normal reference values for LVMDV and LV mass. METHODS: Left ventricular mid-diastolic volumes and LV mass were prospectively measured in 2647 consecutive 'normal' patients undergoing prospectively ECG-triggered coronary CTA...
February 10, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28214139/accuracy-of-computed-tomography-angiography-to-identify-thin-cap-fibroatheroma-detected-by-optical-coherence-tomography
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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/atrioesophageal-fistula-after-af-ablation
#18
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
#19
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
#20
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
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