AI Article Synopsis

  • - The study aimed to evaluate if deep learning reconstruction (DLR) improves the quality of high-resolution CT images of the temporal bone compared to hybrid iterative reconstruction (HIR).
  • - 36 patients underwent CT imaging, and two radiologists compared images from DLR, HIR, and filtered back projection (FBP) based on structural depiction, image noise, and overall quality using a scoring system.
  • - Results showed that DLR significantly reduced image noise and improved depiction of key structures and overall quality compared to HIR, indicating DLR is superior for high-resolution temporal bone imaging.

Article Abstract

Purpose: We investigated whether the quality of high-resolution computed tomography (CT) images of the temporal bone improves with deep learning reconstruction (DLR) compared with hybrid iterative reconstruction (HIR).

Methods: This retrospective study enrolled 36 patients (15 men, 21 women; age, 53.9 ± 19.5 years) who had undergone high-resolution CT of the temporal bone. Axial and coronal images were reconstructed using DLR, HIR, and filtered back projection (FBP). In qualitative image analyses, two radiologists independently compared the DLR and HIR images with FBP in terms of depiction of structures, image noise, and overall quality, using a 5-point scale (5 = better than FBP, 1 = poorer than FBP) to evaluate image quality. The other two radiologists placed regions of interest on the tympanic cavity and measured the standard deviation of CT attenuation (i.e., quantitative image noise). Scores from the qualitative and quantitative analyses of the DLR and HIR images were compared using, respectively, the Wilcoxon signed-rank test and the paired t-test.

Results: Qualitative and quantitative image noise was significantly reduced in DLR images compared with HIR images (all comparisons, p ≤ 0.016). Depiction of the otic capsule, auditory ossicles, and tympanic membrane was significantly improved in DLR images compared with HIR images (both readers, p ≤ 0.003). Overall image quality was significantly superior in DLR images compared with HIR images (both readers, p < 0.001).

Conclusion: Compared with HIR, DLR provided significantly better-quality high-resolution CT images of the temporal bone.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11150291PMC
http://dx.doi.org/10.1007/s00234-024-03330-1DOI Listing

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