The purpose of this study is to evaluate the clinical value of mobile 4D CBCT technology in the diagnosis and treatment of peripheral pulmonary lesions and to validate its intraoperative dynamic three-dimensional CT imaging capability.
This is a single-arm, single-center, prospective study in which approximately 50 patients with peripheral pulmonary lesions will undergo mobile cone-beam computed tomography (CBCT) scanning. In the field of respiratory intervention, mobile CBCT enables real-time intraoperative three-dimensional CT imaging of lesions, providing a more intuitive visualization of the positional relationship between biopsy tools and the target area, offering significant value in bronchoscopic examinations. In this study, CBCT images will be acquired from participants and reconstructed into three-dimensional models. Subsequent analysis will be conducted to evaluate the performance of mobile 4D CBCT three-dimensional reconstruction technology.
Study Type
OBSERVATIONAL
Enrollment
50
Mobile CBCT Three-Dimensional Scanning
Shanghai Chest Hospital
Shanghai, China
RMSE（Root Mean Squared Error）
RMSE (Root Mean Square Error): A commonly used metric for measuring the difference between predicted values and actual values. It is applicable in regression problems and image quality assessment. A smaller RMSE value indicates more accurate predictions, with 0 representing perfect accuracy, while a larger value indicates greater error.
Time frame: 1 year
SSIM (Structural Similarity )
SSIM (Structural Similarity ): A metric used to measure the similarity between two images, comparing them across three dimensions: luminance, contrast, and structure. The SSIM value ranges from \[-1, 1\], where 1 indicates that the two images are identical, and 0 or negative values indicate complete dissimilarity.
Time frame: 1 year
Image Quality
Three experienced experts scored the three-dimensional CT reconstruction images based on image quality using the following criteria:4 points: Exceptionally clear images;3 points: Generally clear images with a few blurred slices;2 points: Basically clear images but with several blurred slices;1 point: Unclear images.
Time frame: 1 year
Slice Continuity
Three experienced experts scored the three-dimensional CT reconstruction images based on slice continuity using the following criteria:4 points: All slices exhibit continuous anatomical structures;3 points: Overall continuous with minor discontinuities in a few slices;2 points: Generally continuous but with noticeable discontinuities in multiple slices;1 point: Predominantly discontinuous across most slices.
Time frame: 1 year
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