A5044567872- Osteoarthritis Treatment and Mechanisms
- Advanced MRI Techniques and Applications
- Lower Extremity Biomechanics and Pathologies
- Total Knee Arthroplasty Outcomes
- Knee injuries and reconstruction techniques
- MRI in cancer diagnosis
- Cancer-related molecular mechanisms research
- Lanthanide and Transition Metal Complexes
- Radiomics and Machine Learning in Medical Imaging
- Bone and Joint Diseases
- Atomic and Subatomic Physics Research
- Sarcoma Diagnosis and Treatment
- Advanced Neuroimaging Techniques and Applications
- Tendon Structure and Treatment
- Sports injuries and prevention
- Musculoskeletal synovial abnormalities and treatments
- Medical Imaging Techniques and Applications
- Temporomandibular Joint Disorders
- Shoulder Injury and Treatment
- Medical Imaging and Analysis
- Transplantation: Methods and Outcomes
- Ultrasound and Hyperthermia Applications
- NMR spectroscopy and applications
- Lipid metabolism and disorders
- Oropharyngeal Anatomy and Pathologies
Medical University of Vienna
2016-2025
Institute of Measurement Science of the Slovak Academy of Sciences
2016-2025
Slovak Academy of Sciences
2016-2025
Center For Biomarker Research In Medicine
2025
University of Vienna
2006-2022
MODUL University Vienna
2020
Vienna General Hospital
2012-2018
Siemens Healthcare (Germany)
2016
Austrian Cluster for Tissue Regeneration
2008-2009
Ludwig Boltzmann Institute for Experimental and Clinical Traumatology
2009
MRI texture features are generally considered to be sensitive variations in signal‐to‐noise ratio and spatial resolution, which represents an obstacle for the widespread clinical application of texture‐based pattern discrimination with MRI. This study investigates sensitivity different categories (co‐occurrence matrix, run‐length absolute gradient, autoregressive model, wavelet transform) number acquisitions (NAs), repetition time (TR), echo (TE), sampling bandwidth (SBW) at resolutions....
Abstract Purpose To use a 3D gradient‐echo (GRE) sequence with two flip angles for delayed gadolinium‐enhanced MRI of cartilage (dGEMRIC) to evaluate relative glycosaminoglycan content repair tissue after matrix‐associated autologous chondrocyte transplantation (MACT). Materials and Methods In phantom study, T1‐mapping based on 3D‐GRE different angle combinations was compared standard inversion recovery (IR) at 3.0T. Fifteen patients were examined MACT in the knee “3–13 months” (group I)...
Since the first introduction of MOCART (Magnetic Resonance Observation Cartilage Repair Tissue) score, significant progress has been made with regard to surgical treatment options for cartilage defects, as well magnetic resonance imaging (MRI) such defects. Thus, aim this study was introduce 2.0 knee score - an incremental update on original that incorporates progression.The volume defect filling is now assessed in 25% increments, hypertrophic up 150% receiving same scoring complete repair....
Ultra-high-field whole-body systems (7.0 T) have a high potential for future human in vivo magnetic resonance imaging (MRI). In musculoskeletal MRI, biochemical of articular cartilage may benefit, particular. Delayed gadolinium-enhanced MRI (dGEMRIC) and T2 mapping shown at 3.0 T. Although dGEMRIC, allows the determination glycosaminoglycan content cartilage, is promising tool evaluation water collagen content. addition, zonal variation, based on tissue anisotropy, provides an indicator...
To develop a 3.0 Tesla breast imaging protocol that combines high temporal and spatial resolution three-dimensional MR sequences for quantitative time course morphologic analysis of lesions.Thirty-four patients were included in the study (age range, 31-82; mean age, 54.3). The was approved by Institutional Review Board written informed consent obtained from all patients. magnetic resonance included: coronal T1-weighted volume-interpolated-breathhold-examination sequence, focused on optimal...
To evaluate magnetic resonance (MR) T2 mapping for characterization of cartilage repair tissue following matrix-associated autologous transplantation (MACT).Fifteen patients were evaluated MACT using a 3T MR scanner. Patients categorized into 2 postoperative intervals: I: 3-13 months, II: 19-42 months. Mean relaxation times calculated from multiple spin-echo sequence determined in regions interest (MACT and normal hyaline cartilage) line profiles through the control sites acquired.Mean...
Purpose To evaluate the feasibility of sodium 7-T magnetic resonance (MR) imaging in repaired tissue and native cartilage patients after matrix-associated autologous chondrocyte transplantation (MACT) compare results with delayed gadolinium-enhanced MR (dGEMRIC) at 3 T. Materials Methods Ethical approval was provided by local ethics committee; written informed consent obtained from all patients. Six women six men (mean age, 32.8 year ± 8.2 [standard deviation] 32.3 years 12.7, respectively)...
To compare mono- and bi-exponential T2 analysis in healthy degenerated Achilles tendons using a recently introduced magnetic resonance variable-echo-time sequence (vTE) for mapping.Ten volunteers ten patients were included the study. A was used with 20 echo times. Images post-processed both techniques, [T2 m, short component (T2 s) long l)]. The number of bi-exponentially decaying pixels each region interest expressed as ratio (B/M). Patients clinically assessed Tendon Rupture Score (ATRS),...
PURPOSE/INTRODUCTION: The aim of this study was to determine the T1 relaxivities (r1) 8 gadolinium (Gd)-based MR contrast agents in human blood plasma at 7 Tesla, compared with 3 Tesla.Eight commercially available Gd-based were diluted concentrations 0, 0.25, 0.5, 1, and 2 mmol/L. In vitro measurements performed 37 degrees C, on a Tesla whole-body magnetic resonance imaging scanner. For determination relaxation times, Inversion Recovery Sequences inversion times from 0 3500 ms used....
Abstract The aim of this study was to investigate T in the Achilles tendon (AT), vivo, using a three‐dimensional ultrashort time echo (3D‐UTE) sequence, compare field strength differences (3 and 7 T) evaluate regional variation healthy pathologic tendon. Ten volunteers with no history pain AT five patients chronic tendinopathy were recruited. 3D‐UTE images measured following times, at = [0.07, 0.2, 0.33, 0.46, 0.59, 0.74, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0 ms]. values calculated by fitting signal...
Purpose The relaxivities of 3 macrocyclic gadolinium-based contrast agents (GBCAs) were determined in human plasma and blood under standardized clinically relevant laboratory conditions. Methods T 1 relaxivity, r1, was at 1.5, 3, 7 T, 37°C phantoms containing 4 different concentrations the GBCAs gadobutrol, gadoteridol, gadoterate. An inversion recovery turbo spin echo sequence used to generate images with several times. 1-times obtained by fitting signal intensities equation. r1 a...
In this prospective, double-center cohort study, we aim to assess how the anterior cruciate ligament (ACL) signal intensity on magnetic resonance imaging (MRI) potentially varies between a group of patients with anatomic ACL reconstruction using autogenous hamstring grafts 6 months postoperatively and healthy control group, MRI-based graft is related knee laxity. Sixty-two consecutive who underwent quadrupled tendon autograft were prospectively invited participate in they evaluated MRI after...
Objective The objective of this study was to assess the maturation matrix-associated autologous chondrocyte transplantation (MACT) grafts up 2 years after surgery using gray-level co-occurrence matrix (GLCM) texture analysis quantitative T maps, compare results with microfracturing technique (MFX) control group, and relate these morphological MOCART 2.0 score. Design A subcohort 37 patients from prospective, multi-center underwent examination on a 3T MR scanner, including mapping sequence at...