| Autor: |
Choi, Sang Lim, Park, Sung Bin, Yang, Seungwook, Lee, Eun Sun, Park, Hyun Jeong, Lee, Jong Beum, Choi, Byung Ihn |
| Zdroj: |
Current Medical Imaging Reviews; 2021, Vol. 17 Issue: 11 p1356-1362, 7p |
| Abstrakt: |
Purpose: Kidney, Ureter, and Bladder radiography (KUB) has frequently been used insuspected urolithiasis, but its performance is known to be lower than that of Computed Tomography(CT). This study aimed to investigate the diagnostic performance of digitally KUB in the detectionof ureteral stones.Materials and Methods: Thirty patients who underwent digital KUB and CT were included in thisretrospective study. The original digital KUB underwent post-processing that involved noise estimation,reduction, and whitening in improving the visibility of ureteral stones. Thus, 60 digital originalor post-processed KUB images were obtained and ordered randomly for blinded review. Aftera period, a second review was performed after unblinding stone laterality. The detection rates wereevaluated at both initial and second reviews, using CT as a reference standard. The objective (size)and subjective (visibility) parameters of ureteral stones were analyzed. Fishers exact test was usedto compare the detection sensitivity between the original and post-processed KUB data set. Visibilityanalysis was assessed with a paired t-test. The correlation of stone size between CT and digitalKUB data sets was assessed with the Pearsons correlation test.Results: The detection rate was higher for most reviewers once stone laterality was provided andwas non-significantly better for the post-processed KUB images (p > 0.05). There was no significantdifference in stone size among CT and digital KUB data sets. In all reviews, visibility gradewas higher in the post-processed KUB images, irrespective of whether stone laterality was provided.Conclusion: Digital post-processing of KUB yielded higher visibility of ureteral stones and couldimprove stone detection, especially when stone laterality was available. Thus, digitally post-processedKUB can be an excellent modality for detecting ureteral stones and measuring their exactsize. |
| Databáze: |
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