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Cardiac CTA

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https://www.readbyqxmd.com/read/27903485/endovascular-repair-of-thoraco-abdominal-aortic-aneurysm-in-high-surgical-risk-patients-fenestrated-and-branched-endografts
#1
E Gallitto, M Gargiulo, A Freyrie, C Bianchini Massoni, R Pini, C Mascoli, G L Faggioli, S Ancetti, A Stella
AIM: To report early and mid-term results of endovascular repair of thoraco-abdominal aneurysms (TAAA) by using of Cook-Zenith fenestrated/branched endografts (FB-EVAR) in high-surgical risk patients unfit for open repair (OR). METHODS: Between January 2012 and April 2015, all the patients with TAAA, considered at high-surgical risk for OR and treated by Cook-Zenith FB-EVAR, were prospectively enrolled. Patients were studied using a thoraco-abdominal computer tomography angiography (CTA) and dedicated software for advanced vessels analysis...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27895960/automatic-four-chamber-segmentation-using-level-set-method-and-split-energy-function
#2
Ho Chul Kang, Jeongjin Lee, Juneseuk Shin
OBJECTIVES: In this paper, we present an automatic method to segment four chambers by extracting a whole heart, separating the left and right sides of the heart, and spliting the atrium and ventricle regions from each heart in cardiac computed tomography angiography (CTA) efficiently. METHODS: We smooth the images by applying filters to remove noise. Next, the volume of interest is detected by using k-means clustering. In this step, the whole heart is coarsely extracted, and it is used for seed volumes in the next step...
October 2016: Healthcare Informatics Research
https://www.readbyqxmd.com/read/27885414/clinical-implementation-of-an-emergency-department-coronary-computed-tomographic-angiography-protocol-for-triage-of-patients-with-suspected-acute-coronary-syndrome
#3
Brian B Ghoshhajra, Richard A P Takx, Pedro V Staziaki, Harshna Vadvala, Phillip Kim, Tomas G Neilan, Nandini M Meyersohn, Daniel Bittner, Sumbal A Janjua, Thomas Mayrhofer, Jeffrey L Greenwald, Quyhn A Truong, Suhny Abbara, David F M Brown, James L Januzzi, Sanjeev Francis, John T Nagurney, Udo Hoffmann
OBJECTIVES: To evaluate the efficiency and safety of emergency department (ED) coronary computed tomography angiography (CTA) during a 3-year clinical experience. METHODS: Single-center registry of coronary CTA in consecutive ED patients with suspicion of acute coronary syndrome (ACS). The primary outcome was efficiency of coronary CTA defined as the length of hospitalization. Secondary endpoints of safety were defined as the rate of downstream testing, normalcy rates of invasive coronary angiography (ICA), absence of missed ACS, and major adverse cardiac events (MACE) during follow-up, and index radiation exposure...
November 24, 2016: European Radiology
https://www.readbyqxmd.com/read/27872849/automated-segmentation-of-coronary-arteries-based-on-statistical-region-growing-and-heuristic-decision-method
#4
Yun Tian, Yutong Pan, Fuqing Duan, Shifeng Zhao, Qingjun Wang, Wei Wang
The segmentation of coronary arteries is a vital process that helps cardiovascular radiologists detect and quantify stenosis. In this paper, we propose a fully automated coronary artery segmentation from cardiac data volume. The method is built on a statistics region growing together with a heuristic decision. First, the heart region is extracted using a multi-atlas-based approach. Second, the vessel structures are enhanced via a 3D multiscale line filter. Next, seed points are detected automatically through a threshold preprocessing and a subsequent morphological operation...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27858923/echocardiographic-diagnosis-of-anomalous-pulmonary-venous-connections-experience-of-84-cases-from-1-medical-center
#5
Ziming Zhang, Li Zhang, Feng Xie, Bing Wang, Zhengxing Sun, Shuangshuang Kong, Xinfang Wang, Nianguo Dong, Guohua Wang, Qing Lv, Yuman Li, Ling Li, Mingxing Xie
We sought to evaluate the value of echocardiography in the diagnosis of different types of anomalous pulmonary venous connections (APVCs) and summarize the diagnostic experience. A total of 84 patients with APVC were confirmed by surgery (n = 82) or computerized tomography angiography (CTA) (n = 2) in the last 6 years (2008-2014) at the Wuhan Union Hospital. The total anomalous pulmonary venous connection (TAPVC) cases account for 60.7%, and partial anomalous pulmonary venous connection (PAPVC) cases account for 39...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27858323/contrast-opacification-on-thoracic-ct-angiography-challenges-and-solutions
#6
REVIEW
Abhishek Chaturvedi, Daniel Oppenheimer, Prabhakar Rajiah, Katherine A Kaproth-Joslin, Apeksha Chaturvedi
Contrast flow and enhancement patterns seen on thoracic CT angiography (CTA) can often be challenging and may often reveal more than is immediately apparent. A non-diagnostic CTA following the initial contrast injection can be secondary to many causes; these include both extrinsic factors, such as injection technique/equipment failure (iv cannula, power injector), and intrinsic, patient-related factors. Contrast pressure and flow graphs often contain useful information regarding the etiology of a non-diagnostic scan...
November 17, 2016: Insights Into Imaging
https://www.readbyqxmd.com/read/27852480/use-of-computed-tomography-to-guide-mitral-interventions
#7
REVIEW
Vladimir Jelnin, Chad Kliger, Fabio Zucchetta, Carlos E Ruiz
With increasing utilization of cardiac computed tomographic angiography (CTA) and widespread adoption of fusion imaging technology allowing the merger of pre-procedural CTA with fluoroscopy, the ability of CTA to guide structural heart interventions has evolved significantly. It has opened new possibilities in mitral valve (MV) interventions with improved pre-procedural planning and intra-procedural guidance. Given the lack of fluoroscopic landmarks of the mitral apparatus and continued growth of native MV device technologies, the value of CTA will continue to develop...
January 2016: Interventional cardiology clinics
https://www.readbyqxmd.com/read/27852478/transcatheter-mitral-valve-in-valve-therapy
#8
REVIEW
Jose F Condado, Brian Kaebnick, Vasilis Babaliaros
Valve-in-valve and valve-in-ring transcatheter mitral valve replacement can be used in for the treatment of inoperable patients with failing mitral surgical bioprosthesis or valve repairs. Preprocedural multi-image evaluation by a heart team must include transthoracic echocardiogram, transesophageal echocardiogram, and cardiac computed tomography angiography (CTA). CTA is used to determine access site (transapical, transseptal, or transatrial), transcatheter valve size, and landing zone. Though complications can occur (ie, valve embolization, bleeding, or vascular complications), this less invasive procedure has a reported success rate of 70% to 100% and is now increasingly used...
January 2016: Interventional cardiology clinics
https://www.readbyqxmd.com/read/27796852/functional-compared-to-anatomical-imaging-in-the-initial-evaluation-of-patients-with-suspected-coronary-artery-disease-an-international-multi-center-randomized-controlled-trial-iaea-spect-cta-study
#9
Ganesan Karthikeyan, Barbara Guzic Salobir, Borut Jug, Niveditha Devasenapathy, Erick Alexanderson, Joao Vitola, Otakar Kraft, Elgin Ozkan, Saket Sharma, Gaurav Purohit, Maja Dolenc Novak, Aloha Meave, Sergio Trevethan, Rodrigo Cerci, Sandra Zier, Lucia Gotthardtová, Tomáš Jonszta, Timucin Altin, Cigdem Soydal, Chetan Patel, Gurpreet Gulati, Diana Paez, Maurizio Dondi, Ravi Kashyap
OBJECTIVE: To test the hypothesis that, in the initial evaluation of patients with suspected coronary artery disease (CAD), stress myocardial perfusion imaging (MPI) would result in less downstream testing than coronary computed tomographic angiography (CCTA). METHODS: In this international, randomized trial, mildly symptomatic patients with an intermediate likelihood of having CAD, and asymptomatic patients at intermediate risk of cardiac events, underwent either initial stress-rest MPI or CCTA...
October 28, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27777861/syphilitic-aortic-aneurysm-with-a-pulmonary-lesion-a-case-report-and-literature-view
#10
Wei Li, Xiu-Jun Yin, Hua-Ying Liu, Rong Yang
INTRODUCTION: Syphilitic aortic aneurysm (SAA) is caused by tertiary stage of syphilis infection. As the wide application of penicillin, this complication is becoming rarer than before. The SAA with lung cancer is a very rare disease in patient. CASE DESCRIPTION: A 55-year-old male was admitted to the hospital complaining "progressive hoarseness for 3 months" and the patient has been diagnosed with syphilis after specific blood exams, computed tomography angiography (CTA) and 3dimensional (3D) reconstructions of cardiac vessels...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27760911/vessel-visibility-assessment-of-low-tube-voltage-coronary-computed-tomography-angiography-determined-with-contrast-to-noise-ratio
#11
Yoriaki Matsumoto, Takanori Masuda, Yukari Yamashita, Takayuki Oku, Hirofumi Uyama, Tomoyasu Sato, Naoyuki Imada
PURPOSE: The purpose of this study was to investigate the association of vessel visibility and radiation dose using contrast-to-noise ratio (CNR) method with low tube voltage in coronary computed tomography angiography (c-CTA). METHODS: We performed electrocardiogram-gated scan of 2.0-mm diameter simulated vessel in the center of the cardiac phantom by the use of a 64-detector CT scanner. Reference CNR was calculated from the target coronary CT number (CTnumberA; 350 Hounsfield units [HU]), epicardial fat CT number (CTnumberB; -100 HU), and target epicardial fat standard deviation (SD) number (SDB; 25 HU) at the 120 kV...
2016: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/27717753/clinical-and-prognostic-correlates-of-pulmonary-congestion-in-coronary-computed-tomography-angiography-data-sets
#12
J Tobias Kühl, Thomas S Kristensen, Anna F Thomsen, Louise Hindsø, Kristoffer L Hansen, Olav W Nielsen, Henning Kelbæk, Klaus F Kofoed
BACKGROUND: Signs of pulmonary congestion obtained from cardiac computed tomography angiographic (coronary CTA) images have not previously been related to clinical congestion or outcome and the clinical value is, therefore, unknown. Our objective was to test the hypothesis that signs of pulmonary congestion predict clinical heart failure and adverse outcome in patients with myocardial infarction. METHODS: Coronary CTA was performed before invasive treatment in 400 prospectively included patients with non ST segment elevation myocardial infarction in an observational study...
September 15, 2016: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/27661045/giant-right-coronary-artery-aneurysms-presenting-as-a-cardiac-mass-case-report
#13
Huanhuan Wang, Yin Zhang, Yanbo Xie, Hongyue Wang, Jinqing Yuan
INTRODUCTION: Coronary artery aneurysm (CAA) is defined as coronary dilatation which exceeds the diameter of the normal adjacent artery segments or the diameter of the patient's largest coronary artery by 1.5 times. The incidence of giant CAA is difficult to be determined, since only few reports have been described in the literature. METHODS AND RESULTS: A 65-year-old man was referred to our hospital because of a "mass" in the right heart detected on echocardiography at a regular medical health examination, while he experienced no any symptoms...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27642299/myocardial-infarction-and-aortic-root-mycotic-aneurysm-complicating-aortic-valve-endocarditis-utility-of-cardiac-ct
#14
Aimee E Moores, Michael S Cahill, Todd C Villines
Aortic mycotic aneurysms are a rare but life-threatening potential complication of infective endocarditis. Rapid deterioration of the vascular wall in highly focal areas makes these pseudoaneurysms particularly prone to rupture, resulting in uncontrolled aortic hemorrhage. While computed tomography angiography (CTA) is the imaging modality of choice for the evaluation of mycotic aneurysms, it is not routinely performed in patients with known or suspected infective endocarditis (IE). However, current valvular heart disease guidelines support the use of cardiac CTA in cases of IE and suspected perivalvular extension when there is inadequate or ambiguous visualization on echocardiography...
2016: Case Reports in Medicine
https://www.readbyqxmd.com/read/27639767/-18-f-fdg-pet-cta-of-prosthetic-cardiac%C3%A2-valves-and-valve-tube-grafts-infective-versus-inflammatory-patterns
#15
María N Pizzi, Albert Roque, Hug Cuéllar-Calabria, Nuria Fernández-Hidalgo, Ignacio Ferreira-González, María T González-Alujas, Alberto Igual-Barceló, David Garcia-Dorado, Benito Almirante, Joan Castell-Conesa, Manuel Escobar Amores, Pilar Tornos, Santiago Aguadé-Bruix
No abstract text is available yet for this article.
October 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27639757/long-term-prognostic-value-of-coronary%C3%A2-ct-angiography-in-asymptomatic-type-2-diabetes-mellitus
#16
Se Hun Kang, Gyung-Min Park, Seung-Whan Lee, Sung-Cheol Yun, Young-Hak Kim, Young-Rak Cho, Hyun Woo Park, Jon Suh, Dong Hyun Yang, Joon-Won Kang, Tae-Hwan Lim, Chang Hee Jung, Eun Hee Koh, Woo Je Lee, Min-Seon Kim, Ki-Up Lee, Joong-Yeol Park
OBJECTIVES: This study sought to evaluate the long-term prognostic value of coronary computed tomography angiography (CTA) in asymptomatic patients with type 2 diabetes mellitus. BACKGROUND: There are limited data on the long-term prognostic impact of coronary CTA in asymptomatic patients with type 2 diabetes mellitus. METHODS: This study analyzed clinical outcomes of 591 consecutive asymptomatic patients with type 2 diabetes mellitus who underwent coronary CTA (mean age 62...
September 9, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27601228/double-contrast-single-phase-computed-tomography-angiography-for-ruling-out-left-atrial-appendage-thrombus-prior-to-atrial-fibrillation-ablation
#17
Cas Teunissen, Jesse Habets, Birgitta K Velthuis, Maarten J Cramer, Peter Loh
Prior to atrial fibrillation (AF) ablation, computed tomography angiography (CTA) is increasingly used for left atrial appendage (LAA) thrombus detection. LAA filling defects on CTA may represent thrombus or incomplete contrast mixing with blood. A pre-bolus of contrast material with delay before the CTA contrast bolus can help distinguish between thrombus and incomplete contrast mixing. We present results from a double-contrast, single-phase CTA protocol used in our daily clinical practice. In patients who underwent AF ablation between 2011 and 2015, double-contrast, single-phase CTA was performed prior to ablation...
September 6, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27575305/computed-tomography-fractional-flow-reserve-can-identify-culprit-lesions-in-aortoiliac-occlusive-disease-using-minimally-invasive-techniques
#18
Erin P Ward, Daniele Shiavazzi, Divya Sood, Allison Marsden, John Lane, Erik Owens, Andrew Barleben
BACKGROUND: Currently, the gold standard diagnostic examination for significant aortoiliac lesions is angiography. Fractional flow reserve (FFR) has a growing body of literature in coronary artery disease as a minimally invasive diagnostic procedure. Improvements in numerical hemodynamics have allowed for an accurate and minimally invasive approach to estimating FFR, utilizing cross-sectional imaging. We aim to demonstrate a similar approach to aortoiliac occlusive disease (AIOD). METHODS: A retrospective review evaluated 7 patients with claudication and cross-sectional imaging showing AIOD...
August 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27573596/cta-derived-left-to-right-atrial-size-ratio-distinguishes-between-pulmonary-hypertension-due-to-heart-failure-and-idiopathic-pulmonary-arterial-hypertension
#19
Anna E Huis In 't Veld, Alexander G Van Vliet, Onno A Spruijt, M Louis Handoko, J Tim Marcus, Anton Vonk Noordegraaf, Harm-Jan Bogaard
BACKGROUND/OBJECTIVES: Assessing atrial sizes by routine non-gated CT-angiography (CTA) could be of value in discriminating between pulmonary hypertension (PH) due to heart failure with preserved ejection fraction (HFpEF) and idiopathic pulmonary arterial hypertension (IPAH). We aimed to determine how left (LA) and right atrial (RA) sizes on non-gated CTA can help discriminate between these patients. METHODS AND RESULTS: In an initial study, CMR was used in 15 IPAH and 15 PH-HFpEF patients to determine LA- and RA size throughout the cardiac cycle...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27560020/can-discrepancies-between-coronary-computed-tomography-angiography-and-cardiac-catheterization-in-high-risk-patients-be-overcome-with-consensus-reading
#20
Sharon Steinberger, Andrew J Plodkowski, Larry Latson, Jeffrey M Levsky, Benjamin Zalta, Alla Godelman, Hillel W Cohen, Linda B Haramati
OBJECTIVE: To assess the incidence and cause of discrepancies between coronary computed tomography angiography (CTA) and catheterization in a high-risk, diverse, predominantly overweight inner-city population. METHODS: Ninety-two patients who underwent coronary CTA and catheterization on March 2007 to December 2012 were retrospectively identified. Clinical coronary CTA interpretation and reinterpretation by a review panel was compared with catheterization results...
August 25, 2016: Journal of Computer Assisted Tomography
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