Diagnosis of osteochondral lesions of the talus on Dual-layer spectral detector CT arthrography: clinical feasibility of virtual noncontrast images

To compare the image quality of virtual noncontrast (VNC) and true noncontrast (TNC) CT images and to evaluate the clinical feasibility of VNC CT images for assessing osteochondral lesions of the talus (OLTs). Forty-five OLT patients who underwent ankle CT arthrography (CTA) using dual-layer spectra...

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Bibliographic Details
Published in:Clinical radiology 2024-07, Vol.79 (7), p.e908-e915
Main Authors: Oh, J., Kang, J.H., Chae, H.-D., Yoo, H.J., Hong, S.H., Lee, D.Y., Choi, J.-Y.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Arthrography - methods
Feasibility Studies
Female
Humans
Imaging, Three-Dimensional - methods
Male
Middle Aged
Radiographic Image Interpretation, Computer-Assisted - methods
Retrospective Studies
Signal-To-Noise Ratio
Talus - diagnostic imaging
Tomography, X-Ray Computed - methods
Young Adult
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Summary:To compare the image quality of virtual noncontrast (VNC) and true noncontrast (TNC) CT images and to evaluate the clinical feasibility of VNC CT images for assessing osteochondral lesions of the talus (OLTs). Forty-five OLT patients who underwent ankle CT arthrography (CTA) using dual-layer spectral detector CT were enrolled. Reconstruction of VNC and three-dimensional volume rendering images was performed. Afterward, image noise, the signal-to-noise ratio (SNR), and the contrast-to-noise ratio (CNR) were measured. For the subjective evaluation, two board-certified musculoskeletal radiologists [R2-1] assessed spatial resolution, overall image quality, and lesion conspicuity. The accuracy rate for OLT grading was determined in 23 patients who underwent arthroscopic surgery. While VNC images showed significantly less noise than TNC images, TNC images showed better SNRs and CNRs (p
ISSN:0009-9260
1365-229X
1365-229X
DOI:10.1016/j.crad.2024.03.006