XION technology isn't just engineered in Germany — it's validated in the peer-reviewed literature. These independent studies, published in leading ENT and phoniatrics journals, examine the 3D laryngostroboscopy and PIET image enhancement that power XION systems.
Development of Three-Dimensional Laryngostroboscopy for Office-Based Laryngeal Diagnostics and Phonosurgical Therapy
Caffier PP, Nawka T, Ibrahim-Nasr A, Thomas B, Müller H, Ko S-R, Song W, Gross M, Weikert S · The Laryngoscope, 2018
The first development and clinical evaluation of three-dimensional (3D) laryngostroboscopy for office-based laryngeal diagnostics and phonosurgery. The 3D system was compared with conventional 2D stroboscopy for visualising the larynx and vocal-fold vibration.
// Key findings
Stereoscopic 3D added genuine depth perception and spatial representation of the larynx and vocal folds.
Improved assessment of factors that influence phonosurgical success and more precise surgical planning.
Enabled advanced office-based laryngeal diagnostics and therapy.
Why it matters for XION: Documents the world-first 3D laryngostroboscopy that is the centrepiece of the EndoSTROBE Spectar phoniatrics workstation.
European Archives of Oto-Rhino-Laryngology2025PIET vs NBI in FEES
Comparison of filter-based and software-based image enhancement systems for endoscopic swallowing diagnostics: a head-to-head study
Niessen AC, Glinzer J, Zang J, Pflug C · European Archives of Oto-Rhino-Laryngology, 2025
An independent, head-to-head comparison of XION’s software-based PIET against hardware filter-based Narrow Band Imaging (NBI) for enhancing the visibility of food dyes during Flexible Endoscopic Evaluation of Swallowing (FEES).
// Key findings
Both PIET and NBI improved dye visibility by roughly tenfold.
PIET was preferred for red and purple dyes; NBI for yellow, green and orange.
For blue, black and white — where neither added much — PIET was almost universally preferred.
Why it matters for XION: Confirms XION PIET delivers image enhancement on par with dedicated NBI hardware for swallowing diagnostics — in software, across HD/4K and 2D/3D.
The inside-out surgical anatomy of the paraglottic space: a video-guided endoscopic dissection
Saleh HMA, Seidel N, Jöns T, Mürbe D, Nawka T · Laryngoscope Investigative Otolaryngology, 2022
A video-guided, inside-out endoscopic dissection of the paraglottic space — an area critical to laryngeal cancer spread and surgical planning — performed on frozen cadavers using a XION 3D video laryngoscope.
// Key findings
Defined the paraglottic space as a distinct compartment of muscle, fat and neurovascular structures, with described boundaries.
3D endoscopy gave a realistic sense of depth and a wide, close-proximity field of view.
Video documentation supports teaching and review of complex laryngeal surgical anatomy.
Why it matters for XION: Demonstrates the XION 3D video laryngoscope as a research- and education-grade tool for surgical anatomy and training.
