Exploring Left Atrial Appendage Thrombi in Large Vessel Occlusion Stroke by Cardiac CT: Thrombus Features, LAA Characteristics and the Impact of Direct Oral Anticoagulation.

Large vessel occlusion (LVO) strokes account for a significant proportion of ischemic strokes and are often cardioembolic in origin, particularly following atrial fibrillation (AF) with thrombus formation in the left atrial appendage (LAA). Although direct oral anticoagulation (DOAC) therapy reduces stroke risk in AF, anatomical and flow-related factors may still allow thrombi to form and persist, revealing the limitations of anticoagulation in high-risk patients. Examining structural and hemodynamic factors contributing to thrombus persistence is essential for optimizing patient management.

Agatston scoring for assessment of coronary artery disease in patients undergoing transcatheter aortic valve implantation.

Computed tomography (CT) angiography remains a cornerstone of pre-interventional assessment for transaortic valve implantation (TAVI). CT imaging prior to TAVI further allows for evaluation of the coronary arteries, with the simplest method being the calculation of the coronary Agatston score. Following the expansion of TAVI to lower risk patients, non-invasive coronary diagnostics in the framework of TAVI gain importance as they may allow patients to avoid unnecessary invasive coronary angiography (ICA) before the procedure.

Imaging and evaluation of cervicothoracic lymphatic drainage pathways in single ventricle patients with Fontan circulation using the mDixon steady state MR angiography.

Background: Single ventricle (SV) Fontan patients are at risk for the development of pathological cervicothoracic lymphatic drainage pathways that are involved in the development of serious conditions such as plastic bronchitis or chylothorax. Visualization and categorization of cervicothoracic lymphatic drainage pathways might therefore help to stratify prognosis and to individualize therapy and follow-up for Fontan patients. This study aimed to show that the 3-dimensional (3D) modified Dixon (mDixon) steady state magnetic resonance (MR) angiography, commonly used to image cardiovascular anatomy, can visualize cervicothoracic lymphatic drainage pathways in high resolution in Fontan patients.

CT imaging in post-resuscitation care of non-traumatic resuscitation room patients in German hospitals.

Background: The procedures and locations where patients are admitted to hospitals and subsequently diagnosed after out-of-hospital cardiac arrest (OHCA) in Germany exhibit considerable heterogeneity. Specifically, advanced imaging diagnostic methods via computed tomography (CT) show significant variation in both timing and execution. However, echocardiography (ECHO) is not an alternative to CT in this setting, as both modalities serve distinct diagnostic purposes.

New standards for hybrid teaching in radiology using the example of Raditorium.com.

Due to their constant availability and flexibility, digital media offer a cooperative and communicative learning arrangement for student training. These advantages must be integrated into medical didactics as part of a hybrid teaching concept, and the digital potential must be used to improve preparation and follow-up opportunities, increase the effectiveness of face-to-face courses, and optimize learning success. For this purpose, the online learning platform Raditorium.

Cardiac CT in Large Vessel Occlusion Stroke for the Evaluation of Non-Thrombotic and Non-Atrial-Fibrillation-Related Embolic Causes.

The purpose of this study is the evaluation of imaging findings of acute-phase cardiac CT (cCT) in stroke patients with large vessel occlusion (LVO) to identify potential cardioembolic sources (CES) in patients without intracardiac thrombi and atrial fibrillation (AF). This retrospective study included 315 patients with LVO who underwent cCT imaging in the acute stroke setting. The images were analysed for 15 imaging findings following the established minor and major cardioembolic risk factors.

Spectral imaging and analysis of monophasic CT angiography to assess infarct core and penumbra in acute stroke.

Acute stroke imaging includes native CT, CT-angiography (CTA), and CT-perfusion (CTP). CTP assesses the irreversibly damaged infarct core (IC), and the potentially salvageable penumbra (PEN) and distinguishes these from areas of healthy parenchyma (HA). However, it requires additional contrast agent and radiation.

Computed tomography for the detection of myocardial hypoperfusion in acute myocardial infarction and the associated CT-to-catheter time.

Emergency computed tomography (CT) often does not allow for comprehensive coronary artery assessment. However, CT may reveal pathological myocardial hypoperfusion suggestive of acute myocardial infarction (AMI), especially in patients presenting with a different diagnostic hypothesis. CT hypoperfusion is known to be associated with myocardial infarction, however the diagnostic value of CT hypoperfusion for the detection of AMI is still not well evaluated.

Quantifying and visualizing abdominal hemodynamics in patients with Fontan circulation by 4D phase-contrast flow magnetic resonance imaging at 1.5 T.

Background: Liver fibrosis has been recognized as a long-term morbidity associated with Fontan circulation (Fontan-associated liver disease, FALD). The pathophysiology of FALD is not completely understood and abnormal flow dynamics may be associated with this condition. Liver hemodynamics can be quantitatively evaluated with four-dimensional phase-contrast flow magnetic resonance imaging (4D PC flow MRI).

Extensive coronary artery thrombosis in a paediatric patient with Kawasaki disease: a case report.

Background: Kawasaki disease (KD) is a paediatric multi-system vasculitis. Mainly, the coronary arteries become affected due to acute inflammation and formation of coronary artery aneurysms (CAAs) may occur. As the size of the CAA increases, so does the risk of clinical complications and serious cardiac outcomes.

Case Report: The woman with the big heart-an imaging-guided attempt of surgical reduction.

In a female patient with acute cardiac decompensation, an auxiliary finding of a giant left atrium emerged. The surgical therapy of the atrial reduction, in addition to a mitral valve replacement and a coronary artery bypass grafting, is hereby presented.

Pressure- and time-dependent alveolar recruitment/derecruitment in a spatially resolved patient-specific computational model for injured human lungs.

We present a novel computational model for the dynamics of alveolar recruitment/derecruitment (RD), which reproduces the underlying characteristics typically observed in injured lungs. The basic idea is a pressure- and time-dependent variation of the stress-free reference volume in reduced dimensional viscoelastic elements representing the acinar tissue. We choose a variable reference volume triggered by critical opening and closing pressures in a time-dependent manner from a straightforward mechanical point of view.

Redefining Unilateral Pulmonary Edema after Mitral Valve Surgery on Chest X-ray Imaging Using the RALE Scoring System.

: Unilateral pulmonary edema (UPE) is a potential complication after mitral valve surgery (MVS), and its cause is not yet fully understood. Definitions are inconsistent, and previous studies have reported wide variance in the incidence of UPE. This research aims at the evaluation of the Radiographic Assessment of Lung Edema (RALE) score concerning assessment of UPE after MVS in order to provide an accurate and consistent definition of this pathology.

Clinical Value of Using Heart Rate Variability Biofeedback Before Elective CT Coronary Angiography to Reduce Heart Rate and the Need for Beta-Blockers.

The value of biofeedback before elective coronary computed tomography angiography (CCTA) to reduce patients' heart rates (HR) was investigated in the current work. Sixty patients who received CCTA to exclude coronary artery disease were included in our study and separated into two groups: with biofeedback (W-BF) and without biofeedback (WO-BF). The W-BF group used a biofeedback device for 15 min before CCTA.

Safety and performance of MR-conditional pacing systems with automated MRI mode at 1.5 and 3 Tesla.

Objectives: To evaluate at 1.5 and 3 T MRI the safety and performance of trademarked ENO, TEO, or OTO pacing systems with automated MRI Mode and the image quality of non-enhanced MR examinations.

Methods: A total of 267 implanted patients underwent MRI examination (brain, cardiac, shoulder, cervical spine) at 1.

Spectral cardiac CT in acute stroke patients.

Cardiac CT obtained in acute ischemic stroke patients can facilitate timely detection of cardiac sources of embolism and guide secondary prevention strategies. Spectral CT exploiting the simultaneous acquisition of separate higher-energy and lower-energy photon spectrum datasets has the potential to improve contrast between thrombi and cardiac structures. This study aimed to investigate the diagnostic value of spectral cardiac CT compared to conventional CT for the detection of cardiac thrombi in acute stroke patients.

Clinical Evaluation of Non-Contrast-Enhanced Radial Quiescent-Interval Slice-Selective (QISS) Magnetic Resonance Angiography in Comparison to Contrast-Enhanced Computed Tomography Angiography for the Evaluation of Endoleaks after Abdominal Endovascular Aneurysm Repair.

Purpose: Contrast-enhanced (CE) angiographic techniques, such as computed tomographic angiography (CE-CTA), are most commonly used for follow-up imaging after endovascular aneurysm repair. In this study, CE-CTA and non-CE QISS-MRA were compared for the first time for assessing endoleaks and aneurysms at follow-up after abdominal EVAR.

Methods: Our study included 20 patients (17 male, median age 79.

Non-contrast enhanced magnetic resonance imaging for characterization of Fontan associated liver disease.

Objectives: To evaluate the ability of non-contrast enhanced magnetic resonance imaging (MRI) techniques to characterize Fontan associated liver disease (FALD) in adolescent and adult Fontan patients.

Methods: Fontan patients (n = 29) and healthy controls (n = 13) underwent an MRI protocol with T, T and Apparent Diffusion Coefficient (ADC) mapping. Routine FALD screening included abdominal ultrasound and laboratory testing.

Diagnostic Accuracy of Dual-Layer Spectral CT Using Electron Density Images to Detect Post-Traumatic Prevertebral Hematoma of the Cervical Spine.

Purpose:  To investigate the diagnostic value of dual-layer spectral detector computed tomography (SDCT) in detecting posttraumatic prevertebral hematoma of the cervical spine by including electron density images.

Methods:  38 patients with post-traumatic imaging of the cervical spine were included in this study and received both SDCT and MRI examinations. MRI was set as the reference and combined conventional/electron density (C + ED) images were compared to conventional CT (CCT) images alone.

Ventricular and atrial function and deformation is largely preserved after arterial switch operation.

Objective: To test the hypothesis that ventricular and atrial function are different between patients with transposition of the great arteries (TGA) after arterial switch operation (ASO) and healthy controls.

Methods: 103 consecutive patients with TGA (median age: 16.7 years, 4.