Photon-Counting Computed Tomography Enables Image-Guided Navigation of the Paranasal Sinuses at Ultra-Low Radiation Dose: An Initial Cadaveric Study

Background/Objectives: Photon-counting computed tomography (PCCT) enables substantial radiation dose reduction while preserving high spatial resolution. Its potential for image-guided navigation in endoscopic sinus surgery (ESS), particularly at ultra-low dose levels, remains insufficiently explored. This study aimed to evaluate the feasibility of PCCT for four different surgical navigation systems at progressively reduced radiation doses.