Publications by authors named "Carsten Schwenke"

Article Synopsis
  • Paclitaxel-coated balloons (PCB) are currently used for treating coronary lesions, but researchers are exploring sirolimus-coated balloons (SCB) as an alternative to see if they perform similarly.
  • A study involving 70 patients across Germany and Switzerland tested the SCB against PCB, focusing on their effectiveness in preventing late lumen loss (LLL) in arteries after 6 months.
  • Results indicated no significant differences between the two treatments in terms of LLL and clinical outcomes, suggesting that SCBs can be a viable alternative to PCBs in coronary interventions.
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  • The study investigates the effectiveness of a silver ion-releasing foam dressing, specifically Biatain Ag, in treating hard-to-heal wounds that often experience delayed healing due to chronic inflammation and infection.
  • A meta-analysis of data from four randomized clinical trials found that this silver dressing significantly reduced wound area and improved other outcomes like odor disappearance, exudate reduction, and pain at dressing removal after four and six weeks compared to control treatments.
  • Overall, the findings suggest that silver ion-releasing foam dressings are beneficial and well-tolerated for treating moderate-to-highly exuding wounds with delayed healing.
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Background: Particularly in rural regions, factors such as lower physician density and long travel distances complicate adequate outpatient care. However, urban regions can also be affected by deficits in care, for example, long waiting times. One model of care intending to improve the situation is the implementation of video consultations.

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Background: Contrast-enhanced mammography (CEM) is an emerging breast imaging modality. Clinical data is scarce.

Objectives: To summarize clinical evidence on the use of iopromide in CEM for the detection or by systematically analyzing the available literature on efficacy and safety.

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Background: Paclitaxel-coated balloons (PCBs) are a preferred treatment option for coronary in-stent restenosis. To date, data from randomized trials of alternative drug coatings are lacking. The aim of the randomized Malaysian and German-Swiss randomized trials was to investigate a novel sirolimus-coated balloon (SCB) compared with a PCB in in-stent restenosis.

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Cardiac symptoms are increasingly recognized as late complications of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in previously well individuals with mild initial illness, but the underlying pathophysiology leading to long-term cardiac symptoms remains unclear. In this study, we conducted serial cardiac assessments in a selected population of individuals with Coronavirus Disease 2019 (COVID-19) with no previous cardiac disease or notable comorbidities by measuring blood biomarkers of heart injury or dysfunction and by performing magnetic resonance imaging. Baseline measurements from 346 individuals with COVID-19 (52% females) were obtained at a median of 109 days (interquartile range (IQR), 77-177 days) after infection, when 73% of participants reported cardiac symptoms, such as exertional dyspnea (62%), palpitations (28%), atypical chest pain (27%) and syncope (3%).

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Objectives: The aim of this randomized controlled trial was to investigate a novel sirolimus-coated balloon (SCB) compared with the best investigated paclitaxel-coated balloon (PCB).

Background: There is increasing clinical evidence for the treatment of coronary de novo disease using drug-coated balloons. However, it is unclear whether paclitaxel remains the drug of choice or if sirolimus is an alternative, in analogy to drug-eluting stents.

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Objectives: The aim of the study was to investigate the possible influence of changes in the brain caused by age on relaxometric and relaxation time-weighted magnetic resonance imaging (MRI) parameters in the deep cerebellar nuclei (DCN) and the globus pallidus (GP) of Gd-exposed and control rats over the course of 1 year.

Materials And Methods: Twenty-five Wistar-Han rats were equally subdivided into 5 groups and initially received 8 injections on 4 consecutive days per week of either 3.6 mL/kg body weight saline (group I-III) or 1.

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  • Researchers are testing two new vaccines, AT04A and AT06A, to help lower cholesterol levels by making the body produce antibodies that fight a protein called PCSK9.
  • The study involved 72 healthy people who received shots and were monitored for side effects and how well their cholesterol levels changed over 90 weeks.
  • The results showed that the AT04A group had a significant reduction in cholesterol levels, while both vaccines caused some mild side effects like tiredness and headaches.
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Introduction: A range of treatments are available for moderate-to-severe psoriasis; however, there remains a paucity of direct comparisons of these in head-to-head trials. Network meta-analyses (NMA) allow comparisons of these to support clinical decision making. This systematic literature review assesses the methodological quality of NMAs available for moderate-to-severe psoriasis and compares their methods and results.

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Purpose: Non-contrast enhanced MRA is a promising diagnostic alternative to contrast-enhanced (CE-) MRA or CT in patients with lower extremity peripheral arterial disease (PAD) but potentially associated with prolonged examination times and inferior diagnostic performance. We aimed to compare examination times and diagnostic performance of non-contrast enhanced quiescent-interval slice-selective (QISS)-MRA and fast-spin-echo (FSE)-MRA at 3.0 T.

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Purpose: Stress perfusion imaging plays a major role in non-invasive detection of coronary artery disease. We compared a compressed sensing-based and a conventional gradient echo perfusion sequence with regard to image quality and diagnostic performance.

Method: Patients sent for coronary angiography due to pathologic stress perfusion CMR were recruited.

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Purpose: 4D flow magnetic resonance imaging (4D-MRI) allows time-resolved visualization of blood flow patterns, quantification of volumes, velocities, and advanced parameters, such as wall shear stress (WSS). As 4D-MRI enters the clinical arena, standardization and awareness of confounders are important. Our aim was to evaluate the equivalence of 4D flow-derived aortic hemodynamics in healthy volunteers using different sequences and field strengths.

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Background: Robust evidence supports the role of α-synuclein pathology as a driver of neuronal dysfunction in Parkinson's disease. PD01A is a specific active immunotherapy with a short peptide formulation targeted against oligomeric α-synuclein. This phase 1 study assessed the safety and tolerability of the PD01A immunotherapeutic in patients with Parkinson's disease.

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Purpose: To compare the MEDRAD Stellant and MEDRAD Stellant FLEX computed tomography contrast media injection systems in terms of radiologic technologists' ability to visually identify air in the syringes at various distances and under different lighting conditions, as well as the ease of cleaning contrast media spills on the injector faces.

Methods: Ten experienced radiologic technologists performed 104 tests (52 per injector) in normal light and in ambient light conditions. The tests were randomized for the radiologic technologists' distance from the injector at 2 ft (61 cm), 8 ft (244 cm), and 16 ft (488 cm).

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Article Synopsis
  • The study compared two approaches for guiding revascularization in stable angina patients: cardiovascular MRI and invasive angiography with fractional flow reserve (FFR) measurements.
  • Nearly 918 patients were randomly assigned to one of the two strategies, and the primary outcome measured was major adverse cardiac events within a year.
  • Results indicated that the cardiovascular MRI approach was noninferior to the FFR approach in terms of major cardiac events, with similar rates of patients free from angina at 12 months.
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Purpose: The aim of this study is to evaluate the diagnostic efficacy and safety of gadoxetate disodium vs gadobenate dimeglumine in patients with known or suspected focal liver lesions.

Methods: This was a prospective, multicenter, double-blind, randomized, inter-individual Phase III study. The primary target-technical efficacy-was already published.

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Objective: To compare proton density-weighted short-tau inversion recovery (PD-STIR) and T2-weighted fat-suppressed turbo spin echo (T2-FS) sequences for detecting osteitis lesions of the sacroiliac joints (SIJ) in patients with chronic low back pain (CLBP).

Methods: This prospective study included 110 patients with CLBP and suspected spondyloarthritis and 18 healthy controls. All 128 participants (age range: 19-57 yrs) underwent 3.

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Objective: To compare the country-specific value sets of the EQ-5D-5L utility index and to evaluate the impact on the interpretation of clinical study results. Six country value sets from Canada, England, Japan, Korea, Netherlands and Uruguay were obtained from literature. In addition, ten crosswalk value sets were downloaded from the EuroQol.

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The analysis of adverse events (AEs) is a key component in the assessment of a drug's safety profile. Inappropriate analysis methods may result in misleading conclusions about a therapy's safety and consequently its benefit-risk ratio. The statistical analysis of AEs is complicated by the fact that the follow-up times can vary between the patients included in a clinical trial.

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Background: Differentiating benign from malignant orbital lesions by imaging and clinical presentation can be challenging.

Purpose: To differentiate benign from malignant orbital masses using dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) based on tumor flow residence time τ calculated with the aid of a pharmacokinetic tumor model.

Material And Methods: Sixty patients with orbital masses were investigated by 3-T MRI including dynamic sequences.

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Objectives: In recent years the impact of the left atrium (LA) has become more evident in different cardiovascular pathologies. We aim to provide LA parameters in healthy volunteers for cardiovascular magnetic resonance (CMR) using a fast approach.

Design: We analyzed 203 healthy volunteers (mean age 44.

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Article Synopsis
  • Computed tomography (CT) of the left atrium is used before pulmonary vein isolation (PVI) to enhance the effectiveness of ablation for atrial fibrillation, but radiation dose reduction is important.
  • A study involving 46 patients compared two reconstruction algorithms—filtered back projection (FBP) and iterative reconstruction (IR)—to evaluate their diagnostic performance while minimizing radiation exposure.
  • Results showed that both algorithms provided high-quality images with an average radiation dose of 0.3 mSv; however, IR improved signal-to-noise and contrast-to-noise ratios without significantly affecting subjective image quality.
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Background Safety data on routine clinical use of gadoxetate disodium in elderly patients is not reported yet. Purpose To assess the safety of liver specific gadoxetate disodium in contrast enhanced magnetic resonance imaging in elderly patients (≥65 years) in comparison to adults (18-64 years). Material and Methods Safety data on gadoxetate disodium were analyzed from 12 clinical phase II-III studies and from our pharmacovigilance database.

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Objective: Radiographs of sacroiliac (SI) joints are used for the detection of structural damage in patients with axial spondyloarthritis (axSpA), but are often difficult to interpret. Here, we address the question how the T1-weighted MRI (T1w MRI) sequence compares with radiography for SI joints' structural lesions using low-dose CT as the standard of reference.

Methods: Radiographs, T1w MRI and low-dose CT of the SI joints from 110 patients (mean age 36.

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