Krebswissenschaft und -therapie

Storz Professional Image Enhancement System: A New Technique to Improve Endoscopic Bladder Imaging

Abstract

Kamphuis GM, de Bruin DM, Fallert J, Gultekin MH, de Reijke TM, Laguna Pes MP and de la Rosette JJMCH

Introduction: SPIES is a novel endoscopic imaging technique with different modalities. Chroma enhances the sharpness of the displayed image. Clara uses a local brightness adaptation in the image to achieve a clearer visibility of darker regions within the image. SPIES Spectra A and B are based on color tone shift algorithms to increase contrast.
Objectives: To describe the different SPIES modalities and to test them on bladder tissue images and tissue simulating phantoms with controlled optical properties. Materials and methods: A bladder tumor image in both Chroma and Clara is analyzed on contrast related intensity fluctuations compared to the White Light image. To evaluate Spectra A and B, a validated tissue representing optical phantom model was used.
Results: Intensity fluctuations show the effect of the Chroma and Clara mode compared to White light. The SPIES A and B modalities change the effective spectral response in the imaging system. This was shown and measured in the phantom model by an increased absorbance for the superficial layers (Spectra A) and the deeper layers (Spectra B).
Conclusion: All SPIES modalities show visual and quantitative differences, expressed as increased image intensity or pixel-to-pixel intensity difference (Chroma and Clara) or increased contrast (Spectra A and B).