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International Journal of Cardiovascular Imaging

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https://www.readbyqxmd.com/read/28321681/machine-learning-of-the-spatio-temporal-characteristics-of-echocardiographic-deformation-curves-for-infarct-classification
#1
Mahdi Tabassian, Martino Alessandrini, Lieven Herbots, Oana Mirea, Efstathios D Pagourelias, Ruta Jasaityte, Jan Engvall, Luca De Marchi, Guido Masetti, Jan D'hooge
The aim of this study was to analyze the whole temporal profiles of the segmental deformation curves of the left ventricle (LV) and describe their interrelations to obtain more detailed information concerning global LV function in order to be able to identify abnormal changes in LV mechanics. The temporal characteristics of the segmental LV deformation curves were compactly described using an efficient decomposition into major patterns of variation through a statistical method, called Principal Component Analysis (PCA)...
March 20, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28317064/altered-synchrony-of-right-ventricular-contraction-in-borderline-pulmonary-hypertension
#2
Bouchra Lamia, Jean-François Muir, Luis-Carlos Molano, Catherine Viacroze, Jacques Benichou, Philippe Bonnet, Jean Quieffin, Antoine Cuvelier, Robert Naeije
Imaging studies have shown that pulmonary hypertension (PH) is associated with inhomogenous right ventricular (RV) regional contraction, or dyssynchrony, and that this is of prognostic relevance. This study aimed at the identification and functional significance of RV dyssynchrony in borderline PH defined by a mean pulmonary artery pressure between (mPAP) 20 and 25 mmHg. RV dyssynchrony was measured by 2-dimensional speckle tracking echocardiography in 17 patients with pulmonary arterial hypertension (PAH), 13 patients with borderline PH and 14 controls...
March 19, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28315986/cardiovascular-imaging-2016-in-the-international-journal-of-cardiovascular-imaging
#3
Johan H C Reiber, Johan De Sutter, Paul Schoenhagen, Arthur E Stillman, Nico R L Vande Veire
No abstract text is available yet for this article.
March 18, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28315985/role-of-cardiovascular-magnetic-resonance-in-acute-and-chronic-ischemic-heart-disease
#4
A Baritussio, A Scatteia, C Bucciarelli-Ducci
Cardiovascular magnetic resonance (CMR) is a multi-parametric, multi-planar, non-invasive imaging technique, which allows accurate determination of biventricular function and precise myocardial tissue characterization in a one-stop-shop technique, free from the use of ionizing radiations. Though CMR has been increasingly applied over the last two decades in every-day clinical practice, its widest application has been in the assessment of ischemic cardiomyopathy.
March 18, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28315014/association-of-native-t1-times-with-biventricular-function-and-hemodynamics-in-precapillary-pulmonary-hypertension
#5
Yin Yin Chen, Hong Yun, Hang Jin, De Hong Kong, Yu Liang Long, Cai Xia Fu, Shan Yang, Meng Su Zeng
In precapillary pulmonary hypertension (PH) patients, we sought to (1) investigate the relationship between ventricular insertion point (VIP) T1 times, hemodynamic parameters, and biventricular function, and (2) determine the predictors of anterior and inferior VIP T1 time. Twenty-two patients with precapillary PH underwent 1.5-T cardiac MR, right heart catheterization (RHC), and echocardiography. A group of 10 healthy age- and sex-matched volunteers served as controls. Biventricular function, morphology and mass were obtained from short-axis cine images...
March 17, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28299609/ascending-aortic-distensibility-and-target-organ-damage-in-primary-hypertension-without-diabetes
#6
Chong-Fu Jia, Zhao-Qian Wang, Xi-Xia Sun, Zhi-Qiang Yang, Yu-Jie Zou, Yi-Nong Jiang
To investigate the relationship between ascending aortic distensibility (AAD) and hypertensive target organ damage (TOD) and its potential value in prediction. One hundred and sixty seven primary hypertension inpatients who underwent coronary CTA examination were enrolled into our study. Retrospective ECG-triggering scanning mode were applied and the images were reconstructed every 5% phase in the entire R-R interval. Maximum and minimum ascending aortic areas as well as the AAD value were calculated on the interested slice...
March 16, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28299608/dissipative-energy-loss-within-the-left-ventricle-detected-by-vector-flow-mapping-in-diabetic-patients-with-controlled-and-uncontrolled-blood-glucose-levels
#7
Chun-Mei Li, Wen-Juan Bai, Yan-Ting Liu, Hong Tang, Li Rao
Diabetes mellitus (DM) is related to increased risks of cardiovascular diseases, such as myocardial infarction, diabetic cardiomyopathy and secondary hypertension. Dissipative energy loss (EL) derived from vector flow mapping (VFM) is thought to reflect the efficiency of blood flow and has been deemed to be an index for the evaluation of left ventricular function. Our study aimed to investigate the value of dissipative EL in diabetic patients with controlled and uncontrolled blood glucose by VFM. Eighty-eight patients with DM and 58 age-matched healthy controls were recruited...
March 15, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28299607/comprehensive-4-stage-categorization-of-bicuspid-aortic-valve-leaflet-morphology-by-cardiac-mri-in-386-patients
#8
I G Murphy, J Collins, A Powell, M Markl, P McCarthy, S C Malaisrie, J C Carr, A J Barker
Bicuspid aortic valve (BAV) disease is heterogeneous and related to valve dysfunction and aortopathy. Appropriate follow up and surveillance of patients with BAV may depend on correct phenotypic categorization. There are multiple classification schemes, however a need exists to comprehensively capture commissure fusion, leaflet asymmetry, and valve orifice orientation. Our aim was to develop a BAV classification scheme for use at MRI to ascertain the frequency of different phenotypes and the consistency of BAV classification...
March 15, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28299606/three-dimensional-speckle-tracking-longitudinal-strain-is-related-to-myocardial-fibrosis-determined-by-late-gadolinium-enhancement
#9
Marco Spartera, Anna Damascelli, Ferenc Mozes, Francesco De Cobelli, Giovanni La Canna
Three-dimensional (3D) speckle tracking echocardiography (STE) is a reliable clinical tool for accurate measurements of left ventricular (LV) volumes and ejection fraction (EF). In this prospective study, we sought to identify an association between 3DSTE longitudinal strain abnormalities and areas of late gadolinium enhancement (LGE). In 50 patients (52 ± 18.5 years old) referred to our hospital for clinically indicated CMR, 3D full-volume trans-thoracic acquisitions on apical views were performed within 1 h of CMR, in order to obtain LV volumes and ejection fraction as well as global and segmental peak systolic longitudinal strain...
March 15, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28289992/dual-compression-is-not-an-uncommon-type-of-iliac-vein-compression-syndrome
#10
Wan-Yin Shi, Jian-Ping Gu, Chang-Jian Liu, Wen-Sheng Lou, Xu He
Typical iliac vein compression syndrome (IVCS) is characterized by compression of left common iliac vein (LCIV) by the overlying right common iliac artery (RCIA). We described an underestimated type of IVCS with dual compression by right and left common iliac arteries (LCIA) simultaneously. Thirty-one patients with IVCS were retrospectively included. All patients received trans-catheter venography and computed tomography (CT) examinations for diagnosing and evaluating IVCS. Late venography and reconstructed CT were used for evaluating the anatomical relationship among LCIV, RCIA and LCIA...
March 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28289991/quantitative-analysis-of-late-gadolinium-enhancement-in-hypertrophic-cardiomyopathy-comparison-of-diagnostic-performance-in-myocardial-fibrosis-between-gadobutrol-and-gadopentetate-dimeglumine
#11
Dongting Liu, Xiaohai Ma, Jiayi Liu, Lei Zhao, Hui Chen, Lei Xu, Zhonghua Sun, Zhanming Fan
The purpose of this study was to compare different semi-automated late gadolinium enhancement (LGE) quantification techniques using gadobutrol and gadopentetate dimeglumine contrast agents with regard to the diagnosis of fibrotic myocardium in patients with hypertrophic cardiomyopathy (HCM). Thirty patients with HCM underwent two cardiac MRI protocols with use of gadobutrol and gadopentetate dimeglumine. Contrast-to-noise ratio (CNR) between LGE area and remote myocardium (CNRremote), between LGE area and left ventricular blood pool (CNRpool), and signal-to-noise ratio (SNR) in LGE were compared...
March 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28289990/dual-contrast-agent-photon-counting-computed-tomography-of-the-heart-initial-experience
#12
Rolf Symons, Tyler E Cork, Manu N Lakshmanan, Robert Evers, Cynthia Davies-Venn, Kelly A Rice, Marvin L Thomas, Chia-Ying Liu, Steffen Kappler, Stefan Ulzheimer, Veit Sandfort, David A Bluemke, Amir Pourmorteza
To determine the feasibility of dual-contrast agent imaging of the heart using photon-counting detector (PCD) computed tomography (CT) to simultaneously assess both first-pass and late enhancement of the myocardium. An occlusion-reperfusion canine model of myocardial infarction was used. Gadolinium-based contrast was injected 10 min prior to PCD CT. Iodinated contrast was infused immediately prior to PCD CT, thus capturing late gadolinium enhancement as well as first-pass iodine enhancement. Gadolinium and iodine maps were calculated using a linear material decomposition technique and compared to single-energy (conventional) images...
March 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28285329/intravascular-ultrasound-to-assess-for-baffle-stenosis-after-mustard-procedure
#13
Lane B Benes, Jonathan R Rosenberg, Cevher Ozcan, Tharian S Cherian, Atman P Shah
No abstract text is available yet for this article.
March 11, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28285328/left-ventricular-mechanics-in-isolated-mild-mitral-stenosis-a-three-dimensional-speckle-tracking-study
#14
Esra Poyraz, Tuğba Kemaloğlu Öz, Gönül Zeren, Tolga Sinan Güvenç, Cevdet Dönmez, Fatma Can, Rengin Çetin Güvenç, Şennur Ünal Dayı
In a fraction of patients with mild mitral stenosis, left ventricular systolic function deteriorates despite the lack of hemodynamic load imposed by the dysfunctioning valve. Neither the predisposing factors nor the earlier changes in left ventricular contractility were understood adequately. In the present study we aimed to evaluate left ventricular mechanics using three-dimensional (3D) speckle tracking echocardiography. A total of 31 patients with mild rheumatic mitral stenosis and 27 healthy controls were enrolled to the study...
March 11, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28281026/neoatherosclerosis-assessed-with-optical-coherence-tomography-in-restenotic-bare-metal-and-first-and-second-generation-drug-eluting-stents
#15
Lei Song, Gary S Mintz, Dong Yin, Myong Hwa Yamamoto, Chee Yang Chin, Mitsuaki Matsumura, Khady Fall, Ajay J Kirtane, Manish A Parikh, Jeffrey W Moses, Ziad A Ali, Richard A Shlofmitz, Akiko Maehara
Although reported in bare metal stents (BMS) and first-generation drug-eluting stents (DES), little is known about neoatherosclerosis in second-generation DES. We used optical coherence tomography to evaluate neoatherosclerosis among different stent generations. Overall, 274 in-stent restenosis (ISR) lesions (duration from implantation 56.9 ± 47.2 months) in 274 patients were assessed for the presence of neoatherosclerosis. Neoatherosclerosis was identified in 38.7% of lesions (106/274): 23.0% second-generation DES (38/165), 65...
March 9, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28281025/ct-myocardial-perfusion-imaging-current-status-and-future-perspectives
#16
Dong Hyun Yang, Young-Hak Kim
Computed tomography myocardial perfusion (CTP) combined with coronary computed tomography angiography (CCTA) may constitute a "1-stop shop" for the noninvasive diagnosis of hemodynamically significant coronary stenosis during a single CT examination. CTP shows high diagnostic performance and provides incremental value over CCTA for the detection of hemodynamically significant coronary stenosis in patients with a high Agatston calcium score or coronary artery stents. Future studies should determine the optimal protocol and clinical value of CTP for guiding revascularization strategy and prognostication...
March 9, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28265791/a-systematic-review-of-imaging-anatomy-in-predicting-functional-significance-of-coronary-stenoses-determined-by-fractional-flow-reserve
#17
Miao Chu, Neng Dai, Junqing Yang, Jelmer Westra, Shengxian Tu
Fractional flow reserve (FFR) is the current gold standard to assess the physiological significance of coronary stenoses. With the development of coronary imaging techniques, several anatomic parameters have been investigated in vivo and their associations with FFR have been studied. The aim of this review is to summarize the accuracy of anatomic parameters derived by the present coronary imaging techniques including invasive coronary angiography, coronary computed tomography angiography, intravascular ultrasound and optical coherence tomography, in predicting a significant FFR...
March 6, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28265790/value-of-tissue-doppler-derived-tei-index-and-two-dimensional-speckle-tracking-imaging-derived-longitudinal-strain-on-predicting-outcome-of-patients-with-light-chain-cardiac-amyloidosis
#18
Dan Liu, Kai Hu, Sebastian Herrmann, Maja Cikes, Georg Ertl, Frank Weidemann, Stefan Störk, Peter Nordbeck
Prognosis of patients with light-chain cardiac amyloidosis (AL-CA) is poor. Speckle tracking imaging (STI) derived longitudinal deformation parameters and Doppler-derived left ventricular (LV) Tei index are valuable predictors of outcome in patients with AL-CA. We estimated the prognostic utility of Tei index and deformation parameters in 58 comprehensively phenotyped patients with AL-CA after a median follow-up of 365 days (quartiles 121, 365 days). The primary end point was all-cause mortality. 19 (33%) patients died during follow-up...
March 6, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28255826/assessment-of-biventricular-systolic-strain-derived-from-the-two-dimensional-and-three-dimensional-speckle-tracking-echocardiography-in-lymphoma-patients-after-anthracycline-therapy
#19
Fei-Yan Song, Jing Shi, Ye Guo, Chu-Jie Zhang, Yu-Chen Xu, Qun-Ling Zhang, Xian-Hong Shu, Lei-Lei Cheng
The aim of this study was to investigate the usefulness of three-dimensional (3D) speckle tracking echocardiography (STE) for assessment of both left and right ventricular systolic function in patients with lymphoma after anthracycline chemotherapy, compared with two-dimensional (2D) STE. Totally eighty-nine patients undergoing anthracycline containing chemotherapy were studied. Echocardiographic assessment included 2D and 3D left ventricular (LV) global longitudinal strain (GLS), global circumferential strain (GCS) and right ventricular (RV) GLS...
March 2, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28255825/editor-s-note-february-2017
#20
(no author information available yet)
No abstract text is available yet for this article.
March 2, 2017: International Journal of Cardiovascular Imaging
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