The International Journal of Cardiovascular Imaging 
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This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.Spectral computed tomography angiography using a gadolinium-based contrast agent for imaging of pathologies of the aorta
ConclusionsTo conclude, our study showed that Gd-CTA is a valid and reliable alternative for diagnostic imaging of the aorta for clinical applications. Monoenergetic reconstructions of computed tomography angiographies using gadolinium based contrast agents may be a useful alternative in patients with aortic aneurysms and contraindications for iodine based contrast agents. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - February 29, 2024 Category: Radiology Source Type: research
Morphological characteristics of in-stent restenosis with different degrees of area stenosis: an optical coherence tomography study
This study aimed to explore the tissue characteristics of patients experiencing ISR with different degrees of area stenosis through the utilization of optical coherence tomography (OCT). In total, 230 patients with ISR who underwent OCT were divided into the following three groups: area stenosis (AS) < 70% (n = 26); 70-80% (n = 119) and AS ≥ 80% (n = 85). Among the 230 patients, the clinical presentation as stable angina was 61.5% in AS < 70%, followed by 47.2% in 70%< AS ≤ 80%, and 31.8% in AS ≥ 80% (P = 0.010). The OCT findings showed that heterogeneous neointima, IS...
Source: The International Journal of Cardiovascular Imaging - February 28, 2024 Category: Radiology Source Type: research
The active pulling technique to solve microcatheter-uncrossable lesions in retrograde chronic total occlusion percutaneous coronary intervention
Conclusions: The APT is an easy and safe technique that can greatly improve procedural efficiency without adding other instruments, and allows the retrograde microcatheter to quickly crossing the CTO body after successful retrograde wire externalization. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - February 26, 2024 Category: Radiology Source Type: research
Cardiac magnetic resonance-derived mitral annular plane systolic excursion: a robust indicator for risk stratification after myocardial infarction
AbstractTo explore the predictive value of mitral annular plane systolic excursion (MAPSE) derived by cardiac magnetic resonance (CMR) for major adverse cardiovascular events (MACE) in postmyocardial infarction (MI) patients. Patients with MI who underwent 3.0 T CMR (Chinese Clinical Trial Registry, ChiCTR2200055158) were recruited retrospectively. CMR parameters included MAPSE and LVEF. Patients were followed up for MACE for more than 6 months and were separated into a No-MACE group and a MACE group. A total of 165 p ost-MI patients were included, and 103 patients were finally analyzed (61 patients belonged to the No-M...
Source: The International Journal of Cardiovascular Imaging - February 24, 2024 Category: Radiology Source Type: research
Effect of temporal resolution on calcium scoring: insights from photon-counting detector CT
AbstractTo intra-individually investigate the variation of coronary artery calcium (CAC), aortic valve calcium (AVC), and mitral annular calcium (MAC) scores and the presence of blur artifacts as a function of temporal resolution in patients undergoing non-contrast cardiac CT on a dual-source photon counting detector (PCD) CT. This retrospective, IRB-approved study included 70 patients (30 women, 40 men, mean age 78 ± 9 years) who underwent ECG-gated cardiac non-contrast CT with PCD-CT (gantry rotation time 0.25 s) prior to transcatheter aortic valve replacement. Each scan was reconstructed at a temporal resolution ...
Source: The International Journal of Cardiovascular Imaging - February 23, 2024 Category: Radiology Source Type: research
Halved contrast medium dose coronary dual-layer CT-angiography – phantom study of tube current and patient characteristics
AbstractVirtual mono-energetic images (VMI) using dual-layer computed tomography (DLCT) enable substantial contrast medium (CM) reductions. However, the combined impact of patient size, tube voltage, and heart rate (HR) on VMI of coronary CT angiography (CCTA) remains unknown. This phantom study aimed to assess VMI levels achieving comparable contrast-to-noise ratio (CNR) in CCTA at 50% CM dose across varying tube voltages, patient sizes, and HR, compared to the reference protocol (100% CM dose, conventional at 120 kVp). A 5 mm artificial coronary artery with 100% (400 HU) and 50% (200 HU) iodine CM-dose was positioned c...
Source: The International Journal of Cardiovascular Imaging - February 22, 2024 Category: Radiology Source Type: research
Co-registered optical coherence tomography and X-ray angiography for the prediction of fractional flow reserve
In this study, we used a challenging dataset, with 46% of the lesions falling within the FFR range of 0.75 to 0.85. Despite this complexity, our model achieved an accuracy of 84.3%, demonstrating a sensitivity of 87.5% and a specificity of 81.4%. Our results demonstrate that incorporating both OCT and XA signals, co-registered, as inputs for the DNN model leads to an important increase in overall accuracy. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - February 20, 2024 Category: Radiology Source Type: research
Assessment of myocardial strain patterns in patients with left bundle branch block using cardiac magnetic resonance
AbstractRecently, a classification with four types of septal longitudinal strain patterns was described using echocardiography, suggesting a pathophysiological continuum of left bundle branch block (LBBB)-induced left ventricle (LV) remodeling. The aim of this study was to assess the feasibility of classifying these strain patterns using cardiovascular magnetic resonance (CMR), and to evaluate their association with LV remodeling and myocardial scar. Single center registry included LBBB patients with septal flash (SF) referred to CMR to assess the cause of LV systolic dysfunction. Semi-automated feature-tracking cardiac re...
Source: The International Journal of Cardiovascular Imaging - February 20, 2024 Category: Radiology Source Type: research
