Journal: npj Imaging
Article Title: Bridging preclinical and clinical fluorescence-guided surgery with advanced cancer vision goggles
doi: 10.1038/s44303-026-00170-x
Figure Lengend Snippet: a Representative visible-light image captured by CVG. b Pseudocolored NIR fluorescence overlay generated using a dynamic thresholding algorithm, overlaid on the visible image. The three boxed values represent fluorescence intensity thresholds for the top 10%, top 5%, and maximum intensity pixels. CVG images were acquired at a resolution of 480 × 640 (height × width) pixels from a fixed 50 cm working distance. c Visible image of the same tissue captured by the handheld Stryker SPY-PHI system (SPY-PHI). d NIR fluorescence (blue-to-red pseudocolor) overlaid on grayscale white-light image obtained by the Stryker SPY-PHI system in SPY-CSF mode. e Raw NIR fluorescence image from CVG. f , NIR fluorescence image obtained by the Stryker SPY-PHI system in SPY contrast mode. g Overlay of the top 15% fluorescence intensity pixels from the CVG NIR image (red) and the transformed Stryker SPY-PHI NIR image (green) in an RGB composite; yellow indicates overlapping regions. h Dice coefficient comparing the top 15% pixels from both systems: 0.84 ± 0.04 ( n = 6), with two outliers shown as brown dots (0.50 and 0.59). i Normalized intensity map (NIM) derived from the CVG NIR grayscale image, showing a mean of 19.84 ± 14.23 and a maximum of 54.93. j NIM from the transformed SPY-PHI image, with a mean of 2.76 ± 1.28 and a maximum of 4.77. Both NIMs were normalized by the mean intensity of the lowest 10% of pixels in the tissue sample. k Overlay of high-intensity NIM regions (NIM > 1.5) from CVG (red) and Stryker SPY-PHI (green) in RGB format, where yellow indicates overlap. l , Dice coefficient for NIM > 1.5 comparison: 0.91 ± 0.02 ( n = 6). Scale bars, 5 mm.
Article Snippet: The human tumor tissue selected for this analysis consisted of samples with saturated intensity pixels not exceeding 15%, which exhibited similar imaging characteristics between the CVG and Stryker SPY-PHI systems.
Techniques: Fluorescence, Generated, Transformation Assay, Derivative Assay, Comparison