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https://www.readbyqxmd.com/read/28437342/left-ventricular-mechanics-assessed-by-2-dimensional-speckle-tracking-echocardiography-in-children-and-adolescents-with-idiopathic-scoliosis
#1
Shujuan Li, Junlin Yang, Ling Zhu, Yunquan Li, Huimin Peng, Yuese Lin, Xuandi Li, Zifang Huang, Huishen Wang
STUDY DESIGN: A retrospective review of data collected prospectively. OBJECTIVE: The study aimed to assess the possible effects of idiopathic scoliosis on left ventricular (LV) myocardial performance in children and adolescent patients. SUMMARY OF BACKGROUND DATA: Spine anomaly may impair cardiorespiratory function. It has been confirmed that respiratory function decreased in patients with scoliosis. However, limited study of the effect of scoliosis on heart function has been published, and no assessment of myocardial deformation of these patients has been reported to our knowledge...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28432057/imaging-and-modeling-of-acute-pressure-induced-changes-of-collagen-and-elastin-microarchitectures-in-pig-and-human-resistance-arteries
#2
Maria Bloksgaard, Thomas M Leurgans, Bart Spronck, Maarten Hg Heusinkveld, Bjarne Thorsted, Kristoffer Rosenstand, Inger Nissen, Ulla Melchior Hansen, Jonathan R Brewer, Luis A Bagatolli, Lars M Rasmussen, Akhmadjon Irmukhamedov, Koen D Reesink, Jo G R De Mey
The impact of disease related changes in the extracellular matrix (ECM) on the mechanical properties of human resistance arteries largely remains to be established. Resistance arteries from both pig and human parietal pericardium (PRA) display a different ECM microarchitecture compared to frequently used rodent mesenteric arteries. We hypothesized that the biaxial mechanics of PRA mirror pressure induced changes in the ECM microarchitecture. This was tested using isolated pig PRA as model system, integrating vital imaging, pressure myography and mathematical modeling...
April 21, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28419023/interrelations-of-epicardial-fat-volume-left-ventricular-t1-relaxation-times-and-myocardial-strain-in-hypertensive-patients-a-cardiac-magnetic-resonance-study
#3
Rami Homsi, Daniel Kuetting, Alois Sprinkart, Nina Steinfeld, Michael Meier-Schroers, Julian Luetkens, Jennifer Nadal, Darius Dabir, Stefan Fischer, Juergen Gieseke, Hans Schild, Daniel Thomas
PURPOSE: This cardiac magnetic resonance study was performed to assess myocardial fibrosis by evaluating T1-relaxation time (T1), to measure left ventricular (LV) strain, and to determine epicardial fat volume (EFV) in hypertensive patients with no history of cardiovascular (CV) events and to relate the results to the presence of coronary atherosclerotic artery disease (CAD) in these patients. MATERIALS AND METHODS: A total of 123 subjects were examined at 1.5 T...
May 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28418811/hypertrabeculated-left-ventricular-myocardium-in-relationship-to-myocardial-function-and-fibrosis-the-multi-ethnic-study-of-atherosclerosis
#4
Nadine Kawel-Boehm, Robyn L McClelland, Filip Zemrak, Gabriella Captur, W Gregory Hundley, Chia-Ying Liu, James C Moon, Steffen E Petersen, Bharath Ambale-Venkatesh, João A C Lima, David A Bluemke
Purpose To determine if excess greater left ventricle (LV) trabeculation is associated with decreased average regional myocardial function, diffuse fibrosis, or both. Materials and Methods This was a HIPAA-compliant institutional board approved multicenter study, and all participants provided written informed consent. Participants in the Multi-Ethnic Study of Atherosclerosis (MESA) underwent a comprehensive cardiac magnetic resonance (MR) examination. LV trabeculation was measured with the maximal apical fractal dimension (FD), which is a marker of endocardial complexity...
April 17, 2017: Radiology
https://www.readbyqxmd.com/read/28415084/p260right-cardiac-chambers-remodeling-in-marathon-and-ultra-trail-athletes-detected-by-speckle-tracking-echocardiography
#5
K Ujka, R M Bruno, B Catuzzo, L Bastiani, A Tonacci, G D'angelo, S Mrakic-Sposta, A Vezzoli, G Giardini, L Pratali
Background: Strenuous and chronic exercise training can have detrimental effects on cardiac morphology and function. Our aim was to evaluate the cardiac adaptation between 2 different specialties' endurance athletes: marathon runners (M) and ultra-trailers (UT). Methods: 47 M (age 45±7, men 32; training: 18 (9-53) years*days/week), 41 UT (age 42±9, men 38, training: 30 (15-66) years*days/week) were submitted in rest condition to conventional 2D echocardiography and Speckle-Tracking echo (STE) (Beyond Diogenes 2...
December 1, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28415083/p235relation-between-myocardial-deformation-by-three-dimensional-speckle-tracking-analysis-control-of-the-hypertension-and-functional-capacity-in-patients-with-systemic-hypertension
#6
I Craciunescu, G Badea, G Ursu, S Vasile, M Iancu, M Bolog, M Dumitrescu
The purpose of this study was to investigate left ventricular (LV) function in hypertensive patients by 3-dimensional (3D) speckle tracking imaging, and determine the relation between the LV mechanics and functional capacity in this population. This cross-sectional study included 20 treated subjects with well-controlled arterial hypertension (group B) and 20 treated participants with uncontrolled hypertension (group A), adjusted by gender and age. All the subjects underwent 24-hour blood pressure monitoring, complete 2-dimensional and 3D examination, and exercise testing...
December 1, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28407011/anthracyclines-induce-early-changes-in-left-ventricular-systolic-and-diastolic-function-a-single-centre-study
#7
Anita Boyd, Paul Stoodley, David Richards, Rina Hui, Paul Harnett, Kim Vo, Tom Marwick, Liza Thomas
AIMS: 2 dimensional (2D) strain analysis detects subclinical left ventricular (LV) systolic dysfunction. Our aim was to evaluate changes in LV systolic and diastolic function in breast cancer patients early after anthracycline chemotherapy, and to identify predisposing factors. METHODS AND RESULTS: 140 patients were assessed by detailed echocardiography before and within seven days post treatment. LV ejection fraction (LVEF), global longitudinal strain (GLS), strain rate and radial and circumferential strain were assessed...
2017: PloS One
https://www.readbyqxmd.com/read/28399703/value-of-speckle-tracking-echocardiography-for-detection-of-clinically-silent-left-ventricular-dysfunction-in-patients-with-%C3%AE-thalassemia
#8
Mozhgan Parsaee, Sedigheh Saedi, Pegah Joghataei, Azita Azarkeivan, Zahra Alizadeh Sani
OBJECTIVE: β-Thalassemia is an inherited hemoglobin disorder resulting in chronic hemolytic anemia requiring chronic transfusion therapy. Cardiac involvement is the main cause of death in patients with thalassemia major. The narrow border is between overt myocardial dysfunction and clinically silent left ventricular (LV) dysfunction in patients with thalassemia. Therefore, we need novel parameters in different imaging techniques to discover cardiac involvement in an early and subtle stage...
April 12, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28391000/prognostic-role-of-subclinical-left-ventricular-systolic-dysfunction-evaluated-by-speckle-tracking-echocardiography-in-rheumatoid-arthritis
#9
Giovanni Cioffi, Ombretta Viapiana, Federica Ognibeni, Andrea Dalbeni, Alessandro Giollo, Davide Gatti, Luca Idolazzi, Giorgio Faganello, Andrea Di Lenarda, Maurizio Rossini
BACKGROUND: Speckle-tracking echocardiography allows early detection of subclinical left ventricular systolic dysfunction (LVSD) in patients with rheumatoid arthritis (RA). In this prospective study, we assessed the prevalence and the prognostic role of subclinical LVSD detected by speckle-tracking echocardiography in RA patients. METHODS: Two-dimensional global longitudinal strain (GLS) and global circumferential strain (GCS) were measured in 209 RA patients without overt cardiac disease...
April 6, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28381447/acute-cardiac-functional-and-mechanical-responses-to-isometric-exercise-in-prehypertensive-males
#10
Jamie M O'Driscoll, Katrina A Taylor, Jonathan D Wiles, Damian A Coleman, Rajan Sharma
Isometric exercise (IE) training has been shown to reduce resting arterial blood pressure (ABP) in hypertensive, prehypertensive, and normotensive populations. However, the acute hemodynamic response of the heart to such exercise remains unclear. We therefore performed a comprehensive assessment of cardiac structure, function, and mechanics at rest and immediately post a single IE session in 26 male (age 44.8 ± 8.4 years) prehypertensive participants. Conventional echocardiography recorded standard and tissue Doppler measures of left ventricular (LV) structure and function...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28381245/estimation-of-myocardial-deformation-using-correlation-image-velocimetry
#11
Athira Jacob, Ganapathy Krishnamurthi, Manikandan Mathur
BACKGROUND: Tagged Magnetic Resonance (tMR) imaging is a powerful technique for determining cardiovascular abnormalities. One of the reasons for tMR not being used in routine clinical practice is the lack of easy-to-use tools for image analysis and strain mapping. In this paper, we introduce a novel interdisciplinary method based on correlation image velocimetry (CIV) to estimate cardiac deformation and strain maps from tMR images. METHODS: CIV, a cross-correlation based pattern matching algorithm, analyses a pair of images to obtain the displacement field at sub-pixel accuracy with any desired spatial resolution...
April 5, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28379383/2d-and-3d-strain-for-detection-of-subclinical-anthracycline-cardiotoxicity-in-breast-cancer-patients-a-balance-with-feasibility
#12
Ciro Santoro, Grazia Arpino, Roberta Esposito, Maria Lembo, Immacolata Paciolla, Cinzia Cardalesi, Giovanni de Simone, Bruno Trimarco, Sabino De Placido, Maurizio Galderisi
Aims: 2D echocardiography is limited for identifying chemotherapy-related cardiotoxicity. This study compared standard echo, 2D, and 3D speckle tracking echocardiography (STE) for detection of subclinical anthracycline (ANT) cardiotoxicity in breast cancer patients. Methods and results: One-hundred consecutive breast cancer patients free of cardiac symptoms were treated by multiple protocols including ANT and cyclophosphamide and/or 5-fluorouracil for 3-4 cycles...
March 31, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28378165/correlation-of-wall-microstructure-and-heterogeneous-distributions-of-strain-in-evolving-murine-abdominal-aortic-aneurysms
#13
John S Wilson, Matthew R Bersi, Guangxin Li, Jay D Humphrey
A primary deficiency in predicting the progression and rupture-risk of abdominal aortic aneurysms (AAAs) is an inability to assign patient-specific, heterogeneous biomechanical properties to the remodelling aortic wall. Toward this end, we investigated possible correlations between three quantities having the potential for non-invasive measurement (diameter, wall thickness, and strain) and local wall microstructure within evolving experimental AAAs. AAAs were initiated in male C57BL/6J mice via in situ adventitial application of elastase and allowed to progress for 1-4 weeks...
April 4, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28373647/fibrosis-quantification-in-hypertensive-heart-disease-with-lvh-and-non-lvh-findings-from-t1-mapping-and-contrast-free-cardiac-diffusion-weighted-imaging
#14
Lian-Ming Wu, Rui Wu, Yang-Rongzheng Ou, Bing-Hua Chen, Qiu-Ying Yao, Qing Lu, Jiani Hu, Meng Jiang, Dong-Aolei An, Jian-Rong Xu
This study assessed the extent of fibrosis and the relationship between the ADC value and systolic strain in hypertensive patients with left ventricular hypertrophy (HTN LVH) and hypertensive patients without LVH (HTN non-LVH) using cardiac diffusion-weighted imaging and T1 mapping. T1 mapping was performed in 13 HTN LVH (mean age, 56.23 ± 3.30 years), 17 HTN non-LVH (mean age, 56.41 ± 2.78 years), and 12 normal control subjects (mean age, 55.67 ± 3.08 years) with 3.0 T MRI using cardiac diffusion-weighted imaging and T1 mapping...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28370909/early-marker-of-regional-left-ventricular-deformation-in-patients-with-hypertrophic-cardiomyopathy-evaluated-by-mri-tissue-tracking-the-effects-of-myocardial-hypertrophy-and-fibrosis
#15
Hua-Yan Xu, Jing Chen, Zhi-Gang Yang, Rui Li, Ke Shi, Qin Zhang, Xi Liu, Lin-Jun Xie, Li Jiang, Ying-Kun Guo
PURPOSE: To evaluate the regional left ventricular (LV) myocardial strain of early stage hypertrophic cardiomyopathy (HCM) patients by magnetic resonance (MR) tissue tracking. MATERIALS AND METHODS: In all, 114 adult HCM patients classified as NYHA I or II and 32 healthy volunteers were enrolled and underwent 3.0T MR examination. Vertical 2-chamber long axis, horizontal 4-chamber, and short axis cine sequence as well as late gadolinium enhancement images (LGE) were scanned...
March 29, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28370233/the-presence-of-diastolic-and-systolic-dysfunction-in-patients-with-impaired-relaxation-filling-pattern
#16
Balaji Pratap, Kamala Ramya Kallur, Edgar Argulian
BACKGROUND: Impaired relaxation filling pattern in the presence of preserved left ventricular ejection fraction is a common finding which is ascribed to early diastolic dysfunction. We thought to determine the distribution of various markers of systolic and diastolic dysfunction in these patients. METHODS: A total of 106 patients were included in this retrospective observational study. Diastolic dysfunction was defined using the American Society of Echocardiography recommendations ("50% rule")...
April 1, 2017: Echocardiography
https://www.readbyqxmd.com/read/28367859/identification-and-assessment-of-cardiac-amyloidosis-by-myocardial-strain-analysis-of-cardiac-magnetic-resonance-imaging
#17
Seitaro Oda, Daisuke Utsunomiya, Takeshi Nakaura, Hideaki Yuki, Masafumi Kidoh, Kosuke Morita, Seiji Takashio, Megumi Yamamuro, Yasuhiro Izumiya, Kyoko Hirakawa, Toshifumi Ishida, Kenichi Tsujita, Mitsuharu Ueda, Taro Yamashita, Yukio Ando, Hiroyuki Hata, Yasuyuki Yamashita
BACKGROUND: We explored the usefulness of myocardial strain analysis on cardiac magnetic resonance imaging (CMR) scans for the identification of cardiac amyloidosis.Methods and Results:The 61 patients with systemic amyloidosis underwent 3.0-T CMR, including CMR tagging and late-gadolinium enhanced (LGE) imaging. The circumferential strain (CS) of LGE-positive and LGE-negative patients was measured on midventricular short-axis images and compared. Logistic regression modeling of CMR parameters was performed to detect patients with LGE-positive cardiac amyloidosis...
March 31, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28349989/distribution-pattern-of-left-ventricular-myocardial-strain-analyzed-by-a-cine-mri-based-deformation-registration-algorithm-in-healthy-chinese-volunteers
#18
Hong Liu, Dan Yang, Ke Wan, Yong Luo, Jia-Yu Sun, Tian-Jing Zhang, Wei-Hao Li, Andreas Greiser, Marie-Pierre Jolly, Qing Zhang, Yu-Cheng Chen
The cine magnetic resonance imaging based technique feature tracking-cardiac magnetic resonance (FT-CMR) is emerging as a novel, simple and robust method to evaluate myocardial strain. We investigated the distribution characteristics of left-ventricular myocardial strain using a novel cine MRI based deformation registration algorithm (DRA) in a cohort of healthy Chinese subjects. A total of 130 healthy Chinese subjects were enrolled. Three components of orthogonal strain (radial, circumferential, longitudinal) of the left ventricle were analyzed using DRA on steady-state free precession cine sequence images...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28335982/comparison-of-displacement-encoding-with-stimulated-echoes-to-magnetic-resonance-feature-tracking-for-the-assessment-of-myocardial-strain-in-patients-with-acute-myocardial-infarction
#19
Yoshitaka Goto, Masaki Ishida, Shinichi Takase, Andreas Sigfridsson, Mio Uno, Motonori Nagata, Yasutaka Ichikawa, Kakuya Kitagawa, Hajime Sakuma
The aim of this study was to compare myocardial strain by cardiovascular magnetic resonance feature tracking (CMR-FT) to those derived from displacement encoding with stimulated echoes (DENSE) in patients with acute myocardial infarction (AMI). Twenty patients (65 pa13 years) with AMI underwent cine, DENSE, black-blood T2-weighted and late gadolinium enhancement CMR at 1.5 T. Global and segmental strain was determined by CMR-FT analysis and DENSE on matched 3 short-axis planes. Global circumferential strain by CMR-FT showed a good agreement with that by DENSE (r = 0...
February 28, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28334029/prognostic-power-of-global-2d-strain-according-to-left-ventricular-ejection-fraction-in-patients-with-st-elevation-myocardial-infarction
#20
Myung-Jin Cha, Hyun-Sook Kim, Seong Hwan Kim, Jae-Hyeong Park, Goo-Yeong Cho
BACKGROUNDS: We aimed to evaluate the predictive power of longitudinal and circumferential fibers according to left ventricular ejection fraction (LVEF) in successfully reperfused acute ST elevation myocardial infarction (STEMI) patients. METHODS: Total 691 patients (age 59±13, 20% female) underwent clinical evaluation and conventional and strain echocardiography (Global longitudinal strain (GLS), global circumferential strain (GCS)). The clinical outcome was defined as the composite of death, hospitalization for heart failure, non-fatal myocardial infarction, and ventricular arrhythmia...
2017: PloS One
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