Publications by authors named "B Schnackenburg"
Pulmonary 4D-flow MRI imaging in landrace pigs under rest and stress.
Int J Cardiovasc Imaging
July 2024
Article Synopsis
- 4D-flow MRI is a promising method for evaluating how blood flows through vessels, particularly in the pulmonary system, but lacks reference values for these vessels.
- In a study, researchers measured blood flow and velocity in the pulmonary trunk and arteries of healthy Landrace pigs, both at rest and after inducing stress with dobutamine to increase heart rate.
- Significant increases in blood flow and velocity were observed under stress, and the reproducibility of these measurements was generally good to excellent, indicating that 4D-flow MRI can effectively track physiological changes in the heart and lungs.
The usefulness of perfluorocarbon nanoemulsions for the imaging of experimental myocarditis has been demonstrated in a high-field 9.4 Tesla MRI scanner. Our proof-of-concept study investigated the imaging capacity of PFC-based F/H MRI in an animal myocarditis model using a clinical field strength of 1.
View Article and Find Full Text PDFAims: Although the prevalence of coronary artery disease (CAD) is high among patients with atrial fibrillation (AF), studies on stress perfusion cardiac magnetic resonance (CMR) imaging frequently exclude patients with AF, and its prognostic and diagnostic value in high-risk patients with suspected or known CAD remains unclear.
Methods And Results: In this longitudinal cohort study, we included 164 consecutive patients with AF during vasodilator perfusion CMR. Diagnostic value was evaluated regarding invasive coronary angiography in a subset of patients.
Myocardial efficiency should be maintained stable under light-to-moderate stress conditions, but ischemia puts the myocardium at risk for impaired functionality. Additionally, the measurement of such efficiency typically requires invasive heart catheterization and exposure to ionizing radiation. In this work, we aimed to non-invasively assess myocardial power and the resulting efficiency during pharmacological stress testing and ischemia induction.
View Article and Find Full Text PDFWhile cardiac tumors are rare, their identification and differentiation has wide clinical implications. Recent cardiac magnetic resonance (CMR) parametric mapping techniques allow for quantitative tissue characterization. Our aim was to examine the range of values encountered in cardiac myxomas in correlation to histological measurements.
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