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International Journal of Cardiovascular Imaging

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https://www.readbyqxmd.com/read/28229312/routine-18-f-fdg-pet-ct-does-not-detect-inflammation-in-the-left-atrium-in-patients-with-atrial-fibrillation
#1
Philipp S Lange, Nemanja Avramovic, Gerrit Frommeyer, Kristina Wasmer, Christian Pott, Lars Eckardt, Christian Wenning
Increasing evidence supports a role of inflammation in the development of atrial fibrillation (AF). However, direct evidence of persistent inflammatory activity in the atria of AF patients is scarce. In this study, we used 18-Fluor-Deoxyglucose positron emission tomography computed tomography ((18)F-FDG PET/CT) to determine atrial inflammation in patients with and without AF. Retrospectively, (18)F-FDG PET/CT scans were analyzed. 37 patients with a history of AF were compared to an age and sex matched control group with no history of AF...
February 22, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28220275/open-source-vendor-independent-automated-multi-beat-tissue-doppler-echocardiography-analysis
#2
Niti M Dhutia, Massoud Zolgharni, Michael Mielewczik, Madalina Negoita, Stefania Sacchi, Karikaran Manoharan, Darrel P Francis, Graham D Cole
Current guidelines for measuring cardiac function by tissue Doppler recommend using multiple beats, but this has a time cost for human operators. We present an open-source, vendor-independent, drag-and-drop software capable of automating the measurement process. A database of ~8000 tissue Doppler beats (48 patients) from the septal and lateral annuli were analyzed by three expert echocardiographers. We developed an intensity- and gradient-based automated algorithm to measure tissue Doppler velocities. We tested its performance against manual measurements from the expert human operators...
February 20, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28220274/cystic-mass-in-the-left-ventricle-suspected-thrombus-with-inhomogeneous-appearance
#3
Cristina Ruisanchez, Beatriz Carballo, Piedad Lerena
No abstract text is available yet for this article.
February 20, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28220273/numerical-and-experimental-investigations-of-the-flow-pressure-relation-in-multiple-sequential-stenoses-coronary-artery
#4
S Li, Cheng Chin, Vikas Thondapu, Eric K W Poon, Jason P Monty, Yingguang Li, Andrew S H Ooi, Shengxian Tu, Peter Barlis
Virtual fractional flow reserve (vFFR) has been evaluated as an adjunct to invasive fractional flow reserve (FFR) in the light of its operational and economic benefits. The accuracy of vFFR and the complexity of hyperemic flow simulation are still not clearly understood. This study investigates the flow-pressure relation in an idealised multiple sequential stenoses coronary artery model via numerical and experimental approaches. Pressure drop is linearly correlated with flow rate irrespective of the number of stenosis...
February 20, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28197870/intravascular-ultrasound-guidance-of-percutaneous-coronary-intervention-in-ostial-chronic-total-occlusions-a-description-of-the-technique-and-procedural-results
#5
Nicola Ryan, Nieves Gonzalo, Philip Dingli, Oscar Vedia Cruz, Pilar Jiménez-Quevedo, Luis Nombela-Franco, Ivan Nuñez-Gil, María Del Trigo, Pablo Salinas, Carlos Macaya, Antonio Fernandez-Ortiz, Javier Escaned
Inability to cross the lesion with a guidewire is the most common reason for failure in percutaneous revascularization (PCI) of chronic total occlusions (CTOs). An ostial or stumpless CTO is an acknowledged challenge for CTO recanalization due to difficulty in successful wiring. IVUS imaging provides the opportunity to visualize the occluded vessel and to aid guidewire advancement. We review the value of this technique in a single-centre experience of CTO PCI. This series involves 22 patients who underwent CTO-PCI using IVUS guidance for stumpless CTO wiring at our institution...
February 14, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28197869/nasci-aha-young-investigator-finalists-2016
#6
Suhny Abbara, Phillip Young, Gregory Kicska, Gautham Reddy, U Joseph Schoepf
No abstract text is available yet for this article.
February 14, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28188475/myocardial-perfusion-imaging-with-pet
#7
Roel S Driessen, Pieter G Raijmakers, Wijnand J Stuijfzand, Paul Knaapen
Noninvasive assessment of coronary artery disease remains a challenging task, with a large armamentarium of diagnostic modalities. Myocardial perfusion imaging (MPI) is widely used for this purpose whereby cardiac positron emission tomography (PET) is considered the gold standard. Next to relative radiotracer distribution, PET allows for measurement of absolute myocardial blood flow. This quantification of perfusion improves diagnostic accuracy and prognostic value. Cardiac hybrid imaging relies on the fusion of anatomical and functional imaging using coronary computed tomography angiography and MPI, respectively, and provides incremental value as compared with either stand-alone modality...
February 10, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28188474/superficial-wall-stress-assessed-from-4-d-analysis-of-coronary-angiography-in-vivo
#8
Xinlei Wu, Clemens von Birgelen, William Wijns, Shengxian Tu
No abstract text is available yet for this article.
February 10, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28176183/improving-the-visual-field-in-coronary-artery-by-with-non-obstructive-angioscopy-dual-infusion-method
#9
Sei Komatsu, Tomoki Ohara, Satoru Takahashi, Mitsuhiko Takewa, Chikao Yutani, Kazuhisa Kodama
Non-obstructive angioscopy (NOA) is used to visualize the surface of the coronary artery, and a clear visual field is obtained by injecting transparent fluid into the gap between the probing catheter and the fiber. This study examines visual field expansion by a dual infusion method, which involves an infusion from the probing and guiding catheters, and the relationships between visual grade and vessel characteristics. Thirty-two patients and thirty patients performed coronary plaque analysis with NOA using the conventional method and the novel dual infusion method, respectively...
February 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28176182/rb-82-pet-ct-left-ventricular-mass-to-volume-ratios
#10
Andrew Van Tosh, Nathaniel Reichek, C David Cooke, Christopher J Palestro, Kenneth J Nichols
Left ventricular (LV) mass:volume ratios indexed to body size (Mi/Vi) provide risk stratification for cardiac events. We sought to determine whether Rb-82 PET mass and volume indices are similar to MRI normal values for low likelihood subjects, and whether abnormal indices are related to abnormal myocardial blood flow (MBF). Data were analyzed retrospectively for 194 patients referred for rest/stress Rb-82 PET. LV EF, volume and mass values were calculated and mass:volume ratios were indexed to patients' height and weight...
February 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28176181/transthoracic-contrast-echocardiography-using-vitamin-b6-and-sodium-bicarbonate-as-contrast-agents-for-the-diagnosis-of-patent-foramen-ovale
#11
Jiang-Chun He, Jian-Yong Zheng, Xin Li, Ye Yang, Bo-Yang Zhang, Yu Chen, Xian-Feng Li, Ying-Ming Liu, Yi Cao, Li Zhao, Tian-Chang Li
To evaluate the utility of transthoracic contrast echocardiography (cTTE) using vitamin B6 and sodium bicarbonate as contrast agents for diagnosing right-to-left shunt (RLS) caused by patent foramen ovale (PFO) compared to that of transesophageal echocardiography (TEE). We investigated 125 patients admitted to our neurology department with unexplained cerebral infarction and migraine. All patients underwent cTTE using vitamin B6 and sodium bicarbonate as contrast agents, after which they underwent transthoracic echocardiography...
February 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28168563/right-atrial-strain-is-predictive-of-clinical-outcomes-and-invasive-hemodynamic-data-in-group-1-pulmonary-arterial-hypertension
#12
Nicole M Bhave, Scott H Visovatti, Brian Kulick, Theodore J Kolias, Vallerie V McLaughlin
Transthoracic echocardiography (TTE) is a practical and widely used tool for risk stratification in pulmonary arterial hypertension (PAH). We hypothesized that right atrial (RA) reservoir function, represented by peak RA systolic strain, correlates with invasive hemodynamic measurements and clinical outcomes in PAH. Patients with group 1 PAH who had TTE within 6 months of index PAH clinic visit and right heart catheterization were included in this retrospective study. Peak RA strain in the 2D apical 4-chamber view was measured with speckle-tracking software...
February 6, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28168562/serial-changes-in-the-three-dimensional-aspect-of-the-side-branch-ostium-jailed-by-a-drug-eluting-stent-assessed-by-optical-coherence-tomography
#13
Takeshi Nakamura, Takayuki Okamura, Tatsuhiro Fujimura, Jutaro Yamada, Tomoko Nao, Hiroki Tateishi, Takao Maeda, Takamasa Oda, Kozo Shiraishi, Tadamitsu Nakashima, Shigehiko Nishimura, Toshiro Miura, Masunori Matsuzaki, Masafumi Yano
The present study investigated serial changes in the three-dimensional (3D) aspect of the jailed side-branch (SB) ostium. We evaluated 32 patients who underwent examination with optical coherence tomography (OCT) both at baseline and at follow-up. After reconstruction of the 3D images, we classified the configuration of overhanging struts at the SB orifice into three groups according to the 3D aspect of the jailing configuration. The number of compartments divided by the stent strut was counted. The side-branch flow area (SBFA), i...
February 6, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28161813/right-ventricular-systolic-function-determined-by-echocardiography-after-percutaneous-balloon-valvuloplasty-in-children-with-isolated-pulmonary-stenosis
#14
EDITORIAL
Sabrina Schweintzger, Gernot Grangl, Mirjam Pocivalnik, Martin Koestenberger
No abstract text is available yet for this article.
February 4, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28155044/transthyretin-cardiac-amyloid-and-aortic-stenosis-in-the-elderly-the-role-of-nuclear-imaging
#15
Elisa Merli, Eleonora Del Giudice, Athanassios Antonopoulos, Gianadrea Amadei, Elisabetta Varani
No abstract text is available yet for this article.
February 2, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28150085/influence-of-scan-technique-on-intracoronary-transluminal-attenuation-gradient-in-coronary-ct-angiography-using-128-slice-dual-source-ct-multi-beat-versus-one-beat-scan
#16
Hae Jin Kim, Sung Mok Kim, Jin-Ho Choi, Yeon Hyeon Choe
The purpose of our study was to investigate the impact of temporal uniformity and adjustment by the contrast opacification enhancement in the aorta on the performance of transluminal attenuation gradient (TAG) for obstructive coronary artery disease. A total of 274 coronary arteries from 94 patients who underwent both multi- and single-beat scan using 128-slice scanner at the same time were enrolled. TAG and corrected coronary opacification (CCO) of both scan technique were compared against obstructive coronary arteries defined by diameter stenosis ≥50%...
February 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28150084/value-of-three-dimensional-strain-parameters-for-predicting-left-ventricular-remodeling-after-st-elevation-myocardial-infarction
#17
Lin Xu, Xiaomin Huang, Jun Ma, Jiangming Huang, Yongwang Fan, Huidi Li, Jian Qiu, Heye Zhang, Wenhua Huang
This study was to evaluate the value of multi-directional strain parameters derived from three-dimensional (3D) speckle tracking echocardiography (STE) for predicting left ventricular (LV) remodeling after ST-elevation myocardial infarction (STEMI) treated with primary percutaneous coronary intervention (PCI) compared with that of two-dimensional (2D) global longitudinal strain (GLS). A total of 110 patients (mean age, 54 ± 9 years) after STEMI treated with primary PCI were enrolled in our study. At baseline (within 24 h after PCI), standard 2D echocardiography, 2D STE and 3D STE were performed to acquire the conventional echocardiographic parameters and strain parameters...
February 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28150083/left-bundle-branch-block-contraction-patterns-identified-from-radial-strain-analysis-predicts-outcomes-following-cardiac-resynchronization-therapy
#18
Chun-Li Wang, Chia-Tung Wu, Yung-Hsin Yeh, Lung-Sheng Wu, Yi-Hsin Chan, Chi-Tai Kuo, Pao-Hsien Chu, Lung-An Hsu, Wan-Jing Ho
A left bundle-branch block (LBBB) contraction pattern identified from longitudinal-strain analysis predicts outcomes following cardiac resynchronization therapy (CRT). We investigated the use of an LBBB-contraction pattern identified from radial- or circumferential-strain analysis in the prediction of CRT benefits. Eighty CRT candidates were prospectively enrolled. Before CRT implantation, speckle-tracking analyses in three deformation directions were performed to determine whether an LBBB-contraction pattern was present...
February 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28150082/relationship-between-gated-myocardial-perfusion-spect-findings-and-hemodynamic-electrocardiographic-and-heart-rate-changes-after-dipyridamole-infusion
#19
Arash Gholoobi, Narjess Ayati, Alireza Baghyari, Mohsen Mouhebati, Baharak Atar, Vahid Reza Dabbagh Kakhki
After dipyridamole infusion, electrocardiographic (ECG), blood pressure and heart rate (HR) changes were seen. We tried to investigate whether there is a relationship between hemodynamic, ECG and HR changes after dipyridamole infusion and gated myocardial perfusion SPECT findings. We studied 206 consecutive patients which underwent a 2-day protocol Dipyridamole Stress/Rest Tc99m-Sestamibi gated myocardial perfusion SPECT. Systolic blood pressure (SBP), diastolic blood pressure (DBP), HR and ECG were recorded...
February 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28138817/incremental-value-of-cardiac-magnetic-resonance-for-the-evaluation-of-cardiac-tumors-in-adults-experience-of-a-high-volume-tertiary-cardiology-centre
#20
Sorin Giusca, Derliz Mereles, Andreas Ochs, Sebastian Buss, Florian André, Sebastian Seitz, Johannes Riffel, Philipp Fortner, Mindaugas Andrulis, Stefan Schönland, Hugo A Katus, Grigorios Korosoglou
To assess the value of cardiac magnetic resonance imaging (CMR) in evaluating cardiac tumours in a tertiary cardiology centre. Between 2004 and 2014, 125 patients (pts.) from a total of 17000 who received a CMR examination in our institution were referred with the suspicion of cardiac tumours. A dedicated protocol was used that included standard cine SSFP acquisitions as well as tissue characterization using T1 and T2 black-blood (T1 BB and T2 BB respectively) with and without fat suppression, perfusion of the structure and late gadolinium enhancement...
January 30, 2017: International Journal of Cardiovascular Imaging
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