Thomas Klenzner

ORCID: 0009-0004-6883-0905
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About
Contact & Profiles
Research Areas
  • Hearing Loss and Rehabilitation
  • Meningioma and schwannoma management
  • Medical Practices and Rehabilitation
  • Head and Neck Surgical Oncology
  • Vestibular and auditory disorders
  • Ear Surgery and Otitis Media
  • Anatomy and Medical Technology
  • Facial Nerve Paralysis Treatment and Research
  • Robotics and Sensor-Based Localization
  • Craniofacial Disorders and Treatments
  • Dental Radiography and Imaging
  • Medical Imaging and Analysis
  • Optical Coherence Tomography Applications
  • Soft Robotics and Applications
  • Sinusitis and nasal conditions
  • Tracheal and airway disorders
  • Spinal Fractures and Fixation Techniques
  • Hearing Impairment and Communication
  • Hearing, Cochlea, Tinnitus, Genetics
  • Photoacoustic and Ultrasonic Imaging
  • Augmented Reality Applications
  • Surgical Simulation and Training
  • Delphi Technique in Research
  • Bone Tumor Diagnosis and Treatments
  • Laser Applications in Dentistry and Medicine

Heinrich Heine University Düsseldorf
2015-2024

Düsseldorf University Hospital
2015-2024

Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde
1999-2024

Klinik und Poliklinik für Hals-, Nasen-, Ohrenheilkunde
2023

Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde
2023

Cochlear (Australia)
2019

Adaptive Design Association
2019

Universitäts-HNO-Klinik Heidelberg
2008-2018

University Medical Center Freiburg
2004-2011

University of Freiburg
1999-2007

Doctors often describe sizes by comparison with everyday objects, e.g., a pinhead-sized tympanic defect or dehiscence the size of penny. But do they really know how big pinhead is? We used an internet-based questionnaire to study whether quantities are accurately estimated and comparisons objects improve accuracy. In prospective, single-center conducted questionnaire, physicians such as pea one-euro coin, SI units appeared on computer screen then their own accuracy estimation. On average,...

10.3238/arztebl.m2025.0010 article EN Deutsches Ärzteblatt international 2025-03-17

Purpose: Accurate estimation of the position and orientation (pose) surgical instruments is crucial for delicate minimally invasive temporal bone surgery. Current techniques lack in accuracy and/or line-of-sight constraints (conventional tracking systems) or expose patient to prohibitive ionizing radiation (intra-operative CT). A possible solution capture instrument with a c-arm at irregular intervals recover pose from image. Methods: i3PosNet infers images using network. Said framework...

10.1007/s11548-020-02157-4 article EN cc-by International Journal of Computer Assisted Radiology and Surgery 2020-05-21

Lasers have been proven to be precise tools for bone ablation. Applying no mechanical stress the patient, they are potentially very suitable microsurgery on fragile structures such as inner ear. However, it remains challenging control laser-bone ablation without injuring embedded soft tissue. In this work, we demonstrate a closed-loop of short-pulsed CO 2 laser perform cochleostomy under monitoring an optical coherence tomography (OCT) system. A foresighted detection bone-endosteum-perilymph...

10.1155/2014/251814 article EN cc-by BioMed Research International 2014-01-01

Abstract Background A ‘third hand’ is useful for holding the endoscope during surgery. The SOLOASSIST camera holder (AktorMed GmbH, Germany), which used abdominal surgery, supposed to be modified head and neck aim of this study was determine intraoperative hand‐held endoscopic range motion different surgical procedures define required technical changes. Methods movements sinus rigid laryngoscopy, lateral skull base surgery were measured calculated. Results revealed diverse geometric bodies...

10.1002/rcs.1643 article EN International Journal of Medical Robotics and Computer Assisted Surgery 2015-02-01

E-Learning ist ein integraler Bestandteil innovativer Lehrkonzepte. Gerade die anatomisch und funktionell anspruchsvolle HNO-Heilkunde eignet sich besonders für selbstgesteuertes digital visualisiertes Lernen. Der Implementierungsgrad von an deutschen HNO-Universitätskliniken sowie systematische Rückmeldungen Medizinstudierenden in Deutschland sind derzeit nicht bekannt. Wir führten eine Erhebung des Bedarfs der aktuellen Nutzung im Fach den medizinischen Fakultäten Universitäten durch....

10.1055/s-0042-117640 article DE Laryngo-Rhino-Otologie 2017-01-18

Hintergrund: Thrombosen der V. jugularis interna stellen im Vergleich zu tiefen Beinvenenthrombosen ein seltenes Ereignis dar. Die möglichen Ursachen einer Jugularvenenthrombose (JVT) sind vielfältig, können jedoch entsprechend Virchow'schen Trias in Alterationen des Gefäßendothels, Veränderungen Bereich Blutstroms sowie Gerinnungsstörungen eingeteilt werden. klinische Symptomatik reicht vom Zufallsbefund bei Beschwerdefreiheit über zervikale Weichteilschwellungen bis zum lebensbedrohlichen...

10.1055/s-2004-825749 article DE Laryngo-Rhino-Otologie 2004-11-01

Objective . Minimally invasive procedures minimize iatrogenic tissue damage and lead to a lower complication rate high patient satisfaction. To date only experimental minimally single-port approaches the lateral skull base have been attempted. The aim of this study was verify feasibility multiport approach for advanced manipulation capability visual control develop software tool preoperative planning. Methods Anatomical 3D models were extracted from twenty regular temporal bone CT scans....

10.1155/2014/379295 article EN BioMed Research International 2014-01-01

To evaluate effectiveness of the cochlear implant (CI) to facilitate single-sided deafness (SSD) rehabilitation following translabyrinthine resection vestibular schwannoma.Retrospective patient review.Single center, University hospital.Patients with SSD who underwent a schwannoma anatomical preservation nerve and subsequent CI on same ear.CI at post-translabyrinthine acoustic neuroma treat SSD, evaluation by retrospective individual case review in period from 2009 2016.Individual patients'...

10.1097/mao.0000000000002181 article EN Otology & Neurotology 2019-03-14

Abstract Purpose For the modeling, execution, and control of complex, non-standardized intraoperative processes, a modeling language is needed that reflects variability interventions. As established Business Process Model Notation (BPMN) reaches its limits in terms flexibility, Case Management (CMMN) was considered as it addresses weakly structured processes. Methods To analyze suitability languages, BPMN CMMN models Robot-Assisted Minimally Invasive Esophagectomy Cochlea Implantation were...

10.1007/s11548-023-03004-y article EN cc-by International Journal of Computer Assisted Radiology and Surgery 2023-08-24

Navigation systems create a connection between imaging data and intraoperative situs, allowing the surgeon to consistently determine location of instruments patient anatomy during surgical procedure. The best results regarding target registration error (measurement uncertainty) are normally demonstrated using fiducials. This study aimed at investigating new strategy for an electromagnetic navigation device.For evaluation system comparison with screw markers automatic registration, we...

10.1177/0003489419849086 article EN Annals of Otology Rhinology & Laryngology 2019-05-08

The aim of this study is a defined, visually based and camera controlled bone removal by navigated CO<sub>2</sub> laser on the promontory inner ear. A precise minimally traumatic opening procedure cochlea for implantation cochlear implant electrode (so-called cochleostomy) intended. Harming membrane linings ear can result in damage remaining organ functions (e.g. complete deafness or vertigo). tissue laser-based ablation system investigated. Inside borehole pulsed beam guided automatically...

10.1117/12.770863 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2008-03-06

Objective: To quantify the postoperative quality of life (QOL) patients after translabyrinthine surgery for vestibular schwannoma (VS) using German version Penn acoustic neuroma quality-of-life questionnaire (PANQOL) in a university hospital. Methods: The PANQOL was administered to 72 who were treated our department with VS between January 2007 and 2017. Descriptive evaluations results performed addition analyses reliability convergent validity subgroup analysis. Results: For first time, QOL...

10.1097/mao.0000000000001819 article EN Otology & Neurotology 2018-06-10
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