Thomas Lehmann

ORCID: 0000-0003-1104-7923
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Image Retrieval and Classification Techniques
  • Medical Image Segmentation Techniques
  • Advanced Image and Video Retrieval Techniques
  • Pregnancy and preeclampsia studies
  • Indian History and Philosophy
  • Diabetes Treatment and Management
  • Diabetes Management and Research
  • AI in cancer detection
  • Indian and Buddhist Studies
  • Biomedical Text Mining and Ontologies
  • Infective Endocarditis Diagnosis and Management
  • Peripheral Artery Disease Management
  • Birth, Development, and Health
  • Radiomics and Machine Learning in Medical Imaging
  • Diabetes and associated disorders
  • Sepsis Diagnosis and Treatment
  • South Asian Cinema and Culture
  • Cell Image Analysis Techniques
  • Diabetes Management and Education
  • Cardiac, Anesthesia and Surgical Outcomes
  • Chronic Disease Management Strategies
  • Health Systems, Economic Evaluations, Quality of Life
  • Gestational Diabetes Research and Management
  • Vascular Procedures and Complications
  • Dental Radiography and Imaging

Jena University Hospital
2016-2025

Friedrich Schiller University Jena
2016-2025

Center for Clinical Studies
2011-2022

FH Aachen
1998-2022

Federal Roads Office
2019-2022

Universitäts-Herzzentrum Freiburg-Bad Krozingen
2020-2022

Chemnitz University of Technology
2022

Swiss Data Science Center
2021

University Hospital Leipzig
2020

Heidelberg University
2005-2020

Image interpolation techniques often are required in medical imaging for image generation (e.g., discrete back projection inverse Radon transform) and processing such as compression or resampling. Since the ideal function spatially is unlimited, several kernels of finite size have been introduced. This paper compares 1) truncated windowed sine; 2) nearest neighbor; 3) linear; 4) quadratic; 5) cubic B-spline; 6) cubic; g) Lagrange; 7) Gaussian approximation with kernel sizes from 1/spl...

10.1109/42.816070 article EN IEEE Transactions on Medical Imaging 1999-01-01

Tertiary lymphoid organs (TLOs) emerge during nonresolving peripheral inflammation, but their impact on disease progression remains unknown. We have found in aged Apoe(-/-) mice that artery TLOs (ATLOs) controlled highly territorialized aorta T cell responses. ATLOs promoted recruitment, primed CD4(+) cells, generated CD4(+), CD8(+), regulatory (Treg) effector and central memory converted naive cells into induced Treg presented antigen by an unusual set of dendritic B cells. Meanwhile,...

10.1016/j.immuni.2015.05.015 article EN cc-by Immunity 2015-06-01

Insufficient antimicrobial exposure is associated with worse outcomes in sepsis. We evaluated whether therapeutic drug monitoring (TDM)-guided antibiotic therapy improves outcomes. Randomized, multicenter, controlled trial from January 2017 to December 2019. Adult patients (n = 254) sepsis or septic shock were randomly assigned 1:1 receive continuous infusion of piperacillin/tazobactam dosing guided by daily TDM piperacillin a fixed dose (13.5 g/24 h if eGFR ≥ 20 mL/min). Target plasma...

10.1007/s00134-021-06609-6 article EN cc-by-nc Intensive Care Medicine 2022-02-01
Mahmoud Diab Thomas Lehmann Wolfgang Bothe Payam Akhyari Stephanie Platzer and 95 more Daniel Wendt Antje‐Christin Deppe Justus Strauch Stefan Hagel Albrecht Günther Gloria Faerber Christoph Sponholz Marcus Franz André Scherag Ilia Velichkov Miriam Silaschi Jens Faßl Britt Hofmann Sven Lehmann René Schramm Georg Fritz Gábor Szabó Thorsten Wahlers Klaus Matschke Artur Lichtenberg Mathias W. Pletz Jan Gummert Friedhelm Beyersdorf Christian Hagl Michael A. Borger Michael Bauer Frank M. Brunkhorst Torsten Doenst Mahmoud Diab Thomas Lehmann Wolfgang Bothe Payam Akhyari Stephanie Platzer Daniel Wendt Antje‐Christin Deppe Justus Strauch Stefan Hagel Albrecht Günther Gloria Faerber Christoph Sponholz Marcus Franz André Scherag Ilia Velichkov Miriam Silaschi Jens Faßl Britt Hofmann Sven Lehmann René Schramm Georg Fritz Gábor Szabó Thorsten Wahlers Klaus Matschke Artur Lichtenberg Mathias W. Pletz Jan Gummert Christian Hagl Michael A. Borger Michael Bauer Frank M. Brunkhorst Torsten Doenst Isabella Schiller Marcus Winter Cornelia Eichhorn Aicko Helbig Florian Rißner Kubanychbek Abdyvasiev Alexandros Moschovas S. Freiburger Rauf Safarov Steffen Bargenda Hristo Kirov Markus Richter T. Sandhaus Natig Zeynalov Mirko Kaluza Denis Bösemann Swen Boog Romanus Ostermann P. Christian Schulze Ali Hamadanchi Rita Musleh Otto W. Witte Petra Bloos Katrin Schwope Steffi Kolanos Karina Knuhr-Kohlberg Anja Haucke Katja Lehmann Carolyn Weber Amila Cizmic C Grathwohl Dirk Sindhu Markus Schaschek Axel Baier Sébastien Schaub

Background: Cardiac surgery often represents the only treatment option in patients with infective endocarditis (IE). However, IE may lead to a sudden release of inflammatory mediators, which is associated postoperative organ dysfunction. We investigated effect hemoadsorption during on Methods: This multicenter, randomized, nonblinded, controlled trial assigned undergoing cardiac for (integration CytoSorb cardiopulmonary bypass) or control. The primary outcome (change sequential failure...

10.1161/circulationaha.121.056940 article EN Circulation 2022-02-25

To develop a general structure for semantic image analysis that is suitable content-based retrieval in medical applications and an architecture its efficient implementation.Stepwise content of images results six layers information modeling incorporating expert knowledge (raw data layer, registered feature scheme object layer). A reference database with 10,000 categorized according to the modality, orientation, body region, biological system used. By means prototypes each category,...

10.1055/s-0038-1633877 article EN Methods of Information in Medicine 2004-01-01

We examined prevalence and progression of retinopathy in dependence on diabetes duration order to estimate the probability progression.In a retrospective cohort-analysis from an academic outpatient department endocrinology metabolic diseases we analyzed 17461 consultations 4513 patients with DM2 1987 2014. 50.3% (n=2272) had at least one documented result funduscopy.25.8% (20.2% non-proliferative, 4.7% proliferative, 0.7% were not classified, 0.1% blindness). The was 1.1% diagnosis, 6.6%...

10.1055/s-0043-120570 article EN Experimental and Clinical Endocrinology & Diabetes 2017-11-28

Consensus regarding biomarkers for detection of infection-related organ dysfunction in the emergency department is lacking. We aimed to identify and validate that could improve risk prediction overt or incipient when added quick Sepsis-related Organ Failure Assessment (qSOFA) as a screening tool.

10.1097/ccm.0000000000006216 article EN cc-by-nc-nd Critical Care Medicine 2024-02-07

The widely used DICOM 3.0 imaging protocol specifies optional tags to store specific information on modality and body region within the header: Body Part Examined Anatomic Structure. We investigate whether this can be for automated categorization of medical images, as is an important first step image retrieval. Our survey examines headers generated by four digital modalities (2 CTs, 2 MRIs) in clinical routine at Aachen University Hospital a period months. manufacturing dates range from 1995...

10.1117/12.467017 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2002-05-16

This paper analyzes B-spline interpolation techniques of degree 2, 4, and 5 with respect to all criteria that have been applied evaluate various schemes in a recently published survey on image medical imaging (Lehmann et al., 1999). It is shown high-degree has superior Fourier properties, smallest error, reasonable computing times. Therefore, B-splines are preferable interpolators for numerous applications processing, particularly if high precision required. If no aliasing occurs, this...

10.1109/42.932749 article EN IEEE Transactions on Medical Imaging 2001-07-01

Modern communication standards such as Digital Imaging and Communication in Medicine (DICOM) include non-image data for a standardized description of study, patient, or technical parameters. However, these tags are rather roughly structured, ambiguous, often optional. In this paper, we present mono-hierarchical multi-axial classification code medical images emphasize its advantages content-based image retrieval applications (IRMA). Our so called IRMA coding system consists four axes with...

10.1117/12.480677 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2003-05-20

Abdominal symptoms (AS) are a hallmark of the multiorgan-disease cystic fibrosis (CF). However, abdominal involvement in CF is insufficiently understood and, compared to pulmonary manifestation, still receives little scientific attention. Aims were assess and quantify AS relate them laboratory parameters, clinical findings, medical history.A total 131 patients with all ages assessed new CF-specific questionnaire (JenAbdomen-CF score 1.0) on pain non-pain symptoms, disorders appetite, eating,...

10.1371/journal.pone.0174463 article EN cc-by PLoS ONE 2017-05-04

Diabet. Med. 28, 872–875 (2011) Abstract Aim There are conflicting data regarding the risk of osteoporosis in patients with Type 1 diabetes. We investigated an association between diabetes, bone mineral density and prevalent fractures. Methods A single‐centre, cross‐sectional study men pre‐menopausal women diabetes ( n = 128) a matched control group 77) was conducted. The primary outcome measure secondary measures were markers metabolism Results Hip total body densities significantly lower...

10.1111/j.1464-5491.2011.03286.x article EN Diabetic Medicine 2011-03-12

About half of all carious lesions in primary teeth German 6- to 7-year-old children remain untreated, but no data regarding the clinical consequences untreated dental caries are available. Therefore, this cross-sectional observational study aimed assess prevalence and experience odontogenic infections dentition 5- 8-year-old children. Dental examinations were performed 5-year-old pre-school (n = 496) school 608) living Westphalian Ennepe-Ruhr district. Schools preschools selected by...

10.1186/s12903-015-0121-8 article EN cc-by BMC Oral Health 2015-11-04

This prospective observational trial investigated effects and safety of periodic fasting in subjects with without type 2 diabetes mellitus (T2DM). The primary end point was set as the change fatty liver index (FLI) a surrogate parameter non-alcoholic disease (NAFLD). Six-hundred ninety-seven (38 T2DM) were enrolled. A baseline FLI ≥ 60 (the threshold for liver) found 264 (37.9%). mean duration 8.5 ± 4.0 days (range 6–38). decreased significantly (−14.02 11.67; p < 0.0001), larger effect...

10.3390/nu11112601 article EN Nutrients 2019-10-30

The aim of the study was to determine quantitative T2 values in prostate tissue and evaluate them for detection grading cancer.After approval from local ethics committee, morphological T2-weighted (T2w) images, apparent diffusion coefficient (ADC) maps diffusion-weighted maps, calculated T2w images 75 men (median age, 66.3 years; median PSA, 8.2 ng/mL) were acquired at 3 T magnetic resonance imaging (MRI). Data retrospectively evaluated their distinction between pathologies.Eight hundred...

10.1097/rli.0000000000000520 article EN Investigative Radiology 2018-11-03

Abstract The major burden of knee joint osteoarthritis (OA) is pain. Since in elder patients diabetes mellitus an important comorbidity OA, we explored whether the presence has a significant influence on pain intensity at end stage and aimed to identify factors possibly related changes diabetic patients. In 23 47 nondiabetic with OA undergoing total arthroplasty, assessed before operation using “Knee Injury Osteoarthritis Outcome Score”. Furthermore, synovial tissue, fluid (SF), cartilage,...

10.1097/j.pain.0000000000000972 article EN Pain 2017-06-08
Coming Soon ...