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Richard Ljuhar

Richard Ljuhar
TU Wien | TU Wien · Institute of Engineering Design and Logistics Engineering

Dr. techn.

About

25
Publications
2,157
Reads
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57
Citations
Introduction
Software-assisted image analysis and prediction in orthopedic surgery, MSK radiology and traumatology
Additional affiliations
November 2010 - present
TU Wien
Position
  • Researcher
Education
October 2010 - September 2016
Technical University Vienna
Field of study
  • Mechanical Engineering

Publications

Publications (25)
Article
Full-text available
Background Trabecular bone texture analysis (TBTA) has been identified as an imaging biomarker that provides information on trabecular bone changes due to knee osteoarthritis (KOA). Consequently, it is important to conduct a comprehensive review that would permit a better understanding of this unfamiliar image analysis technique in the area of KOA...
Article
Objective Joint Space Width (JSW) has been the gold standard to assess loss of cartilage in knee osteoarthritis (OA). Here we describe a novel quantitative measure of joint space width: standardized JSW (stdJSW). We assess the performance of this quantitative metric for JSW at tracking Joint Space Narrowing OARSI grade (JSN) changes and provide ref...
Article
Objective. To assess the impact of a computerized system on physicians’ accuracy and agreement rate, as compared with unaided diagnosis. Methods. A set of 124 unilateral knee radiographs from the Osteoarthritis Initiative (OAI) study were analyzed by a computerized method with regard to Kellgren-Lawrence (KL) grade, as well as joint space narrowing...
Article
Full-text available
Objective To evaluate the clinical applicability of a software tool developed to extract bone textural information from conventional lumbar spine radiographs, and to test it in a subset of postmenopausal women treated for osteoporosis with the fully human monoclonal antibody denosumab. Methods The software was developed based on the principles of...
Conference Paper
Background Osteoarthritis (OA) is one of the leading causes of long-term pain and disabilities associated with musculoskeletal disorders. Effective treatment and disease-progression slowdown depend on early detection and quantification of risk. However, current disease parameters, like joint space width (JSW), have proven to be insufficient for the...
Conference Paper
Background Osteoarthritis (OA) is the most common form of arthritis and affects disproportionately the knee. Recent developments in imaging techniques showed that OA is not just a joint disease but also involves progressive changes in the subchondral/subarticular bone area of the tibia. On top of the accepted method of measuring the joint space wid...
Article
Full-text available
The relationship between knee osteoarthritis progression and changes in tibial bone structure has long been recognized and various texture descriptors have been proposed to detect early osteoarthritis (OA) from radiographs. This work aims to investigate (1) femoral textures as an OA indicator and (2) the potential of entropy as a computationally ef...
Article
Background Osteoarthritis (OA) is a degenerative, slowly developing joint disease and characterized by pain and functional disability. Although clinical indications of OA can vary among different definitions there is a general agreement that the disease is associated with cartilage narrowing and the development of osteophytes and sclerosis within t...
Article
Background Texture information of the subchondral bone area of 2D radiographs represents a promising possibility for evaluating the state of osteoarthritis (OA) in addition to traditional clinical means such as visual and semi-quantitative assessments. Objectives Algorithms based on fractal analysis have shown to be capable of identifying differen...
Article
Full-text available
Objective: Texture information of the subchondral bone area (SBA) of 2D radiographs represents a promising possibility for evaluating the state of osteoarthritis (OA). However such features are likely to vary within the SBA and therefore the selection of the region of interest (ROI) plays a crucial role. Thus, a feature selection algorithm (FSA) is...
Article
Full-text available
Objective: Osteoarthritis (OA) is a degenerative, slowly developing joint disease. Although clinical indications of OA can vary among different definitions there is a general agreement that the disease is associated with cartilage narrowing. However, there is no general consensus about the threshold below which the joint space width (JSW)/joint spa...
Conference Paper
Radiographic texture analysis of calcaneus has been recently extensively researched for automated discrimination between osteoporotic and healthy subjects. Existing work concentrates on design of texture descriptors and assumes already available texture patches previously defined by human experts. In this paper we address the missing link to comple...
Article
Full-text available
Information stored in the documentation of a product constitutes in many aspects the intellectual property (IP) of an enterprise. This valuable knowledge, built over years of extensive research and development deserves special attention and protection. Especially the context of distributed product development activities and increased collaborations...
Book
Full-text available
The cross-border region between Bratislava and Vienna is one of the fastest growing regions in Europe – especially concerning the high-tech industry (www.contor-analyse.de). One success factor of commercially effective high-tech start-up companies is the early identification of user requirements and selling arguments. The basis for commercial innov...

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