Research at the Department of Otorhinolaryngology, Head and Neck Surgery focuses on diseases of the inner ear, such as deafness, hearing loss and dizziness, cholesteatoma; rhino surgery; infectious diseases of the ear, nose and throat; olfaction and HPV-related diseases; head and neck cancer.
Research spans from basic science including experimental studies to clinical trials.
The department has facilities with experimental laboratories within the Danish Neuroscience Centre for cell cultures, PCR, protein and DNA analyses.
Access to databases, national and regional registres are available for research purposes.

The department has three research centres: Danish Inner Ear Research Group (DIERG), Olfaction Research Centre Aarhus (ORCA), and ear, nose and throat (ENT) infections. Furthermore, the deparment is part of the Interdisciplinary Thyroidea Research Centre in Aarhus.

Danish Inner Ear Research Group

is an interdisciplinary research group with focus on diseases of the inner ear and the 8th cranial nerve. The group includes ENT-researchers, geneticists, engineers, psychologists, audiologists and paediatricians addressing the following issues: genetics in noise-induced and age-related hearing loss; significance of neuro-trophic factors; cochlear implants with regard to etiology; co-morbidity; inner ear malformations; meningitis and outcome. The members have both clinical and experimental research competences within fields such as cultures of neurons, confocal microscopy and PCR.

Olfaction Research Centre Aarhus 

is a collaborative research group addressing the sense of smell. 
At Aarhus University Hospital researchers from different specialities focus on olfaction and cooperate at the new research centre Olfaction Research Centre Aarhus (ORCA). Otorhinolaryngologists, neurosurgeons, neurologists, neurophysiologists, neuro-radiologists, geneticists and psychologists aims to expand the current knowledge of olfacatory physiology and biology. On a longterm basis, the collaborative research can help improve especially diagnostics related to olfaction. The researchers also hope that increased knowledge can help to prevent diseases in the olfaction area. 
Within the collaboration of several different professional approaches the researchers will investigate both conductive and sensorineural pathways of olfaction. 
Research of the olfaction will provide a better understanding of the relationship between certain nasal disorders, neurological and psychiatric disorders and disturbances in the sense of smell. The researchers have competences in studying animal models, cell cultures, several modalities of microscopy including confocal microscopy and imaging. 


ENTresearchers collaborate with microbiologists at the Department of Clinical Immunology and Statens Serum Institut (SSI) to address all kinds of acute infections especially related to the ears, tonsils and necrotizing fasciitis. A local database has data on all acute ENT-infections for more than 10 years and this is fundamental for surveillance of the clinical features, microbiology, resistance patterns and outcome. The importance of vaccines (HiB and pneumococci) is of special interest. Among various microbiological agents, HPV and Fusobacterium necrophorum are studied intensively.

Thyroidea Research Centre in Aarhus

Clinicians as well as para-clinicians at Aarhus University Hospital from the Department of Otorhinolaryngology, Department of Internal Medicine and Endocrinology, Department of Surgery (section for colorectal and mamma-endocrine surgery) and Department of Histopathology involved in diagnostics and treatment of thyroid diseases collaborate to obtain more accurate diagnostic tools including various nuclear medical approaches, determinants of the oxygen tension in tumours and elastographical methods. 
Furthermore, a comprehensive laryngological study among patients undergoing surgical treatment has been initiated partly as a multicenter study with other Nordic countries.