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Cardiac CTA

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https://www.readbyqxmd.com/read/29119262/role-of-cardiac-pet-in-clinical-practice
#1
REVIEW
Brian M Salata, Parmanand Singh
Early identification of atherosclerosis and at-risk lesions plays a critical role in reducing the burden of cardiovascular disease. While invasive coronary angiography serves as the gold standard for diagnosing coronary artery disease, non-invasive imaging techniques provide visualization of both anatomical and functional atherosclerotic processes prior to clinical presentation. The development of cardiac positron emission tomography (PET) has greatly enhanced our capability to diagnose and treat patients with early stages of atherosclerosis...
November 9, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29097345/tailoring-protocols-for-chest-ct-applications-when-and-how
#2
Roberto Iezzi, Anna Rita Larici, Paola Franchi, Riccardo Marano, Nicola Magarelli, Alessandro Posa, Biagio Merlino, Riccardo Manfredi, Cesare Colosimo
In the medical era of early detection of diseases and tailored therapies, an accurate characterization and staging of the disease is pivotal for treatment planning. The widespread use of computed tomography (CT)-often with the use of contrast material (CM)-probably represents the most important advance in diagnostic radiology. The result is a marked increase in radiation exposure of the population for medical purposes, with its intrinsic carcinogenic potential, and CM affecting kidney function. The radiologists should aim to minimize patient's risk by reducing radiation exposure and CM amount, while maintaining the highest image quality...
November 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29091000/image-quality-of-prospectively-ecg-triggered-coronary-ct-angiography-in-heart-transplant-recipients
#3
Andrea Bartykowszki, Márton Kolossváry, Ádám Levente Jermendy, Júlia Karády, Bálint Szilveszter, Mihály Károlyi, Orsolya Balogh, Balázs Sax, Béla Merkely, Pál Maurovich-Horvat
OBJECTIVE: Cardiac allograft vasculopathy (CAV) is among the top causes of death 1 year after heart transplantation (HTx). Coronary CT angiography (CTA) is a potential alternative to invasive imaging in the diagnosis of CAV. However, the higher heart rate (HR) of HTx recipients prompts the use of retrospective ECG-gating, which is associated with higher radiation dose, a major concern in this patient population. Therefore, we sought to evaluate the feasibility and image quality of low-radiation-dose prospectively ECG-triggered coronary CTA in HTx recipients...
November 1, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29069044/diagnostic-value-of-the-corrected-qt-difference-between-leads-v1-and-v6-in-patients-with-acute-pulmonary-thromboembolism
#4
Seong Jun Park, Chang Hee Kwon, Byeong Joo Bae, Bum Sung Kim, Sung Hea Kim, Hyun-Joong Kim, Hweung Kon Hwang, Sang-Man Chung
In acute pulmonary thromboembolism (PTE), right ventricular pressure overload impairs right-sided cardiac conduction and repolarization. We hypothesized that if heterogeneity of repolarization between right and left ventricles occurs in acute PTE, there would be the difference of repolarization between them. Therefore, we aimed to evaluate the diagnostic value of corrected QT interval (QTc) difference between leads V1 and V6 (V1 - V6) in patients with acute PTE.A total of 89 patients with suspected acute PTE who underwent computed tomographic angiography (CTA) were enrolled from January to December 2015...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28988831/calcification-remodeling-index-assessed-by-cardiac-ct-predicts-severe-coronary-stenosis-in-lesions-with-moderate-to-severe-calcification
#5
Mengmeng Yu, Yuehua Li, Wenbin Li, Zhigang Lu, Meng Wei, Jiayin Zhang
OBJECTIVES: To assess the diagnostic performance of the calcification remodeling index (RI) as assessed by coronary computed tomography angiography (coronary CTA) to predict the presence of severe coronary stenosis in atherosclerotic coronary lesions with moderate to severe calcification. METHODS: Patients who underwent coronary CTA and invasive coronary angiography (ICA) within one month and had moderately to severely calcified lesions as revealed by coronary CTA, were retrospectively included...
September 30, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28986773/feasibility-of-combined-risk-stratification-with-coronary-ct-angiography-and-stress-myocardial-spect-in-patients-with-chronic-coronary-artery-disease
#6
Tomonari Kiriyama, Yoshimitsu Fukushima, Hiromitsu Hayashi, Hitoshi Takano, Shin-Ichiro Kumita
OBJECTIVE: To examine the additional prognostic value of coronary CT angiography (CTA) over myocardial perfusion imaging (MPI) in patients with suspected or known coronary artery disease. METHODS: A series of 157 patients (mean age 69 ± 9 years; 76% male; median follow-up 49 months; range 12-82 months) underwent stress MPI with SPECT and coronary CTA within a 6-month interval. Summed stress score (SSS) and summed difference score (SDS) of stress MPI, number of vessels with stenosis, and presence of left main trunk stenosis and high-risk plaques on coronary CTA were examined...
October 6, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28950315/quantitative-global-plaque-characteristics-from-coronary-computed-tomography-angiography-for-the-prediction-of-future-cardiac-mortality-during-long-term-follow-up
#7
Michaela M Hell, Manish Motwani, Yuka Otaki, Sebastien Cadet, Heidi Gransar, Romalisa Miranda-Peats, Jacob Valk, Piotr J Slomka, Victor Y Cheng, Alan Rozanski, Balaji K Tamarappoo, Sean Hayes, Stephan Achenbach, Daniel S Berman, Damini Dey
Aims: Adverse plaque characteristics determined by coronary computed tomography angiography (CTA) have been associated with future cardiac events. Our aim was to investigate whether quantitative global per-patient plaque characteristics from coronary CTA can predict subsequent cardiac death during long-term follow-up. Methods and results: Out of 2748 patients without prior history of coronary artery disease undergoing CTA with dual-source CT, 32 patients suffered cardiac death (mean follow-up of 5 ± 2 years)...
July 29, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28941999/structured-reporting-platform-improves-cad-rads-assessment
#8
Bálint Szilveszter, Márton Kolossváry, Júlia Karády, Ádám L Jermendy, Mihály Károlyi, Alexisz Panajotu, Zsolt Bagyura, Milán Vecsey-Nagy, Ricardo C Cury, Jonathon A Leipsic, Béla Merkely, Pál Maurovich-Horvat
BACKGROUND: Structured reporting in cardiac imaging is strongly encouraged to improve quality through consistency. The Coronary Artery Disease - Reporting and Data System (CAD-RADS) was recently introduced to facilitate interdisciplinary communication of coronary CT angiography (CTA) results. We aimed to assess the agreement between manual and automated CAD-RADS classification using a structured reporting platform. METHODS: Five readers prospectively interpreted 500 coronary CT angiographies using a structured reporting platform that automatically calculates the CAD-RADS score based on stenosis and plaque parameters manually entered by the reader...
September 18, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28935463/image-guidance-for-transcatheter-aortic-valve-implantation-tavi-and-cerebral-embolic-protection
#9
I Vernikouskaya, W Rottbauer, B Gonska, C Rodewald, J Seeger, V Rasche, J Wöhrle
The study was aimed at evaluation of the feasibility and potential benefit of image fusion (IF) of pre-procedural CT angiography (CTA) and x-ray (XR) fluoroscopy for image-guided navigation in transfemoral transcatheter aortic valve implantation (TAVI) with the strong focus on guiding the double-filter cerebral embolic protection device and valve prosthesis placement. METHODS: In 31 patients undergoing TAVI, image registration of CTA-derived 3D anatomical models of the relevant cardiac anatomy and vasculature, and live XR was performed applying a commercially available navigation tool...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28917674/prognostic-value-of-risk-factors-calcium%C3%A2-score-coronary-cta-myocardial%C3%A2-perfusion-imaging-and-invasive%C3%A2-coronary-angiography-in-kidney%C3%A2-transplantation-candidates
#10
Simon Winther, My Svensson, Hanne Skou Jørgensen, Laust Dupont Rasmussen, Niels Ramsing Holm, Lars Christian Gormsen, Kirsten Bouchelouche, Hans Erik Bøtker, Per Ivarsen, Morten Bøttcher
OBJECTIVES: This study sought to perform a prospective head-to-head comparison of the predictive value of clinical risk factors and a variety of cardiac imaging modalities including coronary artery calcium score (CACS), coronary computed tomography angiography (CTA), single-photon emission computed tomography (SPECT), and invasive coronary angiography (ICA) on major adverse cardiac events (MACE) and all-cause mortality in kidney transplantation candidates. BACKGROUND: Current guidelines recommend screening for coronary artery disease in kidney transplantation candidates...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28886071/dynamics-of-the-aortic-annulus-in-4d-ct-angiography-for-transcatheter-aortic-valve-implantation-patients
#11
Mustafa A Elattar, Leon W Vink, Martijn S van Mourik, Jan Baan, Ed T vanBavel, R Nils Planken, Henk A Marquering
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is a well-established treatment for patients with severe aortic valve stenosis. This procedure requires pre-operative planning by assessment of aortic dimensions on CT Angiography (CTA). It is well-known that the aortic root dimensions vary over the heart cycle. However, sizing is commonly performed at either mid-systole or end-diastole only, which has resulted in an inadequate understanding of its full dynamic behavior. STUDY GOAL: We studied the variation in annulus measurements during the cardiac cycle and determined if this variation is dependent on the amount of calcification at the annulus...
2017: PloS One
https://www.readbyqxmd.com/read/28875364/age-and-sex-based-resource-utilisation-and-costs-in-patients-with-acute-chest-pain-undergoing-cardiac-ct-angiography-pooled-evidence-from-romicat-ii-and-acrin-pa-trials
#12
Fabian Bamberg, Thomas Mayrhofer, Maros Ferencik, Daniel O Bittner, Travis R Hallett, Sumbal Janjua, Christopher L Schlett, John T Nagurney, James E Udelson, Quynh A Truong, Pamela K Woodard, Judd E Hollander, Harold Litt, Udo Hoffmann
OBJECTIVES: To determine resource utilisation according to age and gender-specific subgroups in two large randomized diagnostic trials. METHODS: We pooled patient-specific data from ACRIN-PA 4005 and ROMICAT II that enrolled subjects with acute chest pain at 14 US sites. Subjects were randomized between a standard work-up and a pathway utilizing cardiac computed tomography angiography (CCTA) and followed for the occurrence of acute coronary syndrome (ACS) and resource utilisation during index hospitalisation and 1-month follow-up...
September 5, 2017: European Radiology
https://www.readbyqxmd.com/read/28845370/seismocardiography-based-cardiac-computed-tomography-gating-using-patient-specific-template-identification-and-detection
#13
Jingting Yao, Srini Tridandapani, Carson A Wick, Pamela T Bhatti
To more accurately trigger cardiac computed tomography angiography (CTA) than electrocardiography (ECG) alone, a sub-system is proposed as an intermediate step toward fusing ECG with seismocardiography (SCG). Accurate prediction of quiescent phases is crucial to prospectively gating CTA, which is susceptible to cardiac motion and, thus, can affect the diagnostic quality of images. The key innovation of this sub-system is that it identifies the SCG waveform corresponding to heart sounds and determines their phases within the cardiac cycles...
2017: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/28844869/what-is-the-optimal-anatomic-location-for-coronary-artery-pressure-measurement-at-ct-derived-ffr
#14
Mateusz Solecki, Mariusz Kruk, Marcin Demkow, U Joseph Schoepf, Michael A Reynolds, Łukasz Wardziak, Zofia Dzielińska, Mateusz Śpiewak, Barbara Miłosz-Wieczorek, Łukasz Małek, Magdalena Marczak, Cezary Kępka
BACKGROUND: CT-FFR is an area of growing interest in the field of cardiac imaging. However, the specific anatomic location distal to a lesion of interest where CT-FFR should be computed to yield the most valid results has not been examined. This study investigated the most appropriate anatomic location distal to a coronary artery stenosis for obtaining CT-FFR measurements. METHODS: 73 patients (60 ± 9 years; 58% male) with at least one coronary lesion with 40-90% stenosis on coronary CTA (either a 2 × 128 slice or a 2 × 192 slice dual-source CT scanner) underwent stress cardiac magnetic resonance (CMR) perfusion imaging for inducible ischemia...
August 15, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28817814/cardiac-computed-tomography-angiographic-findings-as-predictors-of-late-heart-failure-in-an-asymptomatic-diabetic-cohort-an-8-year-prospective-follow-up-study
#15
David A Halon, Jubran Ayman, Ronen Rubinshtein, Barak Zafrir, Mali Azencot, Basil S Lewis
OBJECTIVES: Predictive models for heart failure (HF) in heterogeneous populations have had limited success. We examined cardiac computed tomography angiography (CTA) predictors of HF or cardiovascular death (HF-CVD) in a prospective study of asymptomatic diabetics undergoing baseline assessment by CTA. METHODS: The subjects (n = 735, aged 55-74 years, 51.2% women) had no clinical history of cardiovascular disease at study entry. Coronary artery calcium (CAC) score, CTA-defined coronary atherosclerosis, cardiac chamber volumes, and clinical data were collected and late outcome events recorded over 8...
August 18, 2017: Cardiology
https://www.readbyqxmd.com/read/28811999/quantitative-analysis-of-epicardial-fat-volume-effects-of-scanning-protocol-and-reproducibility-of-measurements-in-non-contrast-cardiac-ct-vs-coronary-ct-angiography
#16
Luigia D'Errico, Francesco Salituri, Marco Ciardetti, Riccardo Favilla, Alessandro Mazzarisi, Giuseppe Coppini, Carlo Bartolozzi, Paoli Marraccini
BACKGROUND: Several studies have focused on the role of epicardial fat in the pathogenesis of cardiovascular disease (CVD). The main purpose of the study was to evaluate a computerized method for the quantitative analysis of epicardial fat volume (EFV) by non-contrast cardiac CT (NCT) for coronary calcium scan and coronary CT angiography (coronary CTA). METHODS: Thirty patients (61±12.5 years, 73% male, body mass index (BMI) =25.9±6.3 kg/m(2)) referred to our Institution for suspected coronary artery disease (CAD) underwent NCT and coronary CTA...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28810087/multiple-pulmonary-arteriovenous-malformations-an-unusual-cause-of-shortness-of-breath-and-recurrent-strokes
#17
Kalyan C Potu, Shenjing Li, Shawn C Kelly, Julia A Prescott-Focht, Scott Pham
OBJECTIVE: To discuss an uncommon case of a patient with multiple pulmonary arteriovenous malformations (PAVMs) presenting with dyspnea on exertion and recurrent strokes. BACKGROUND: A 79-year-old woman with recent onset recurrent cerebrovascular accidents (CVAs) was referred to cardiology for evaluation of dyspnea on exertion. Clinical examination was unrevealing. METHODS: A transthoracic echocardiogram (TTE) with agitated saline was suggestive of an extra-cardiac shunt...
February 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28807509/-18-f-fdg-pet-ct-angiography-in-the-diagnosis-of-infective-endocarditis-and-cardiac-device-infection-in-adult-patients-with-congenital-heart-disease-and-prosthetic-material
#18
María N Pizzi, L Dos-Subirà, Albert Roque, Nuria Fernández-Hidalgo, Hug Cuéllar-Calabria, Antonia Pijuan Domènech, María T Gonzàlez-Alujas, M T Subirana-Domènech, B Miranda-Barrio, Ignacio Ferreira-González, Juan J González-López, Albert Igual, Olga Maisterra-Santos, David García-Dorado, Joan Castell-Conesa, Benito Almirante, Manuel Escobar Amores, Pilar Tornos, Santiago Aguadé-Bruix
OBJECTIVES: Infective endocarditis (IE) and cardiac device infection (CDI) are a major complication in the growing number of patients with congenital heart disease (CHD) reaching adulthood. We aimed to evaluate the added value of (18)F-FDG-PET/CT angiography (PET/CTA) in the diagnosis of IE-CDI in adults with CHD and intravascular or intracardiac prosthetic material, in whom echocardiography (ECHO) and modified Duke Criteria (DC) have limitations because of the patients' complex anatomy...
December 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28797740/framework-for-detection-and-localization-of-coronary-non-calcified-plaques-in-cardiac-cta-using-mean-radial-profiles
#19
Muhammad Moazzam Jawaid, Atif Riaz, Ronak Rajani, Constantino Carlos Reyes-Aldasoro, Greg Slabaugh
BACKGROUND AND OBJECTIVE: The high mortality rate associated with coronary heart disease (CHD) has driven intensive research in cardiac imaging and image analysis. The advent of computed tomography angiography (CTA) has turned non-invasive diagnosis of cardiovascular anomalies into reality as calcified coronary plaques can be easily identified due to their high intensity values. However, the detection of non-calcified plaques in CTA is still a challenging problem because of lower intensity values, which are often similar to the nearby blood and muscle tissues...
August 1, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28781240/outcomes-in-patients-with-contained-ruptures-of-the-aortic-annulus-after-transcatheter-aortic-valve-implantation-with-balloon-expandable-devices
#20
Philipp Breitbart, Jan Minners, Gregor Pache, Jochen Reinöhl, Nicolaj Christopher Hansson, Bjarne L Nørgaard, Franz-Josef Neumann, Philipp Ruile
AIMS: To evaluate incidence and long-term outcomes of patients with contained ruptures of the aortic annulus (CR) after transcatheter aortic valve implantation (TAVI). METHODS AND RESULTS: From May 2012 to June 2017 a total of 1030 patients underwent post- TAVI computed tomography angiography (CTA) at three centers in Germany and Denmark. CR were identified in 12 patients (1.2%, 80.7+5.0 years, STS-Score 4.1+1.4%). All 12 patients had received a balloon-expandable valve...
August 8, 2017: EuroIntervention
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