Microvascular Doppler ultrasound in children with acute pyelonephritis
- Authors
- Choi, Gayoung; Je, Bo-Kyung; Hong, Doran; Cha, Jaehyung
- Issue Date
- 2021
- Publisher
- SOC ROMANA ULTRASONOGRAFE MEDICINA BIOLOGIE-SRUMB
- Keywords
- pyelonephritis; paediatrics; ultrasonography; colour Doppler; microvascular imaging
- Citation
- MEDICAL ULTRASONOGRAPHY, v.23, no.2, pp.161 - 167
- Indexed
- SCIE
SCOPUS
- Journal Title
- MEDICAL ULTRASONOGRAPHY
- Volume
- 23
- Number
- 2
- Start Page
- 161
- End Page
- 167
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/130175
- DOI
- 10.11152/mu-2827
- ISSN
- 2066-8643
- Abstract
- Aims: To compare the diagnostic performance of microvascular Doppler ultrasonography (MVUS) to B-mode and conventional colour Doppler US (CDUS) for detecting acute pyelonephritis (APN) lesions in children. Material and methods: An IRB-approved retrospective study was performed. From July 2018 to January 2019, 41 APN lesions in 28 children (15 boys, 13 girls; age range, 1-196 months; mean age, 53 months) who underwent Tc-99m-dimercaptosuccinic acid renal scintigraphy (DMSA) or contrast-enhanced computed tomography (CECT) and US including B-mode, CDUS, and MVUS were enrolled in this study. Three paediatric radiologists independently reviewed the B-mode, CDUS and MVUS images for the DMSA or CECT-proven APN lesions and evaluated the lesion visibility, lesion distinguishability and diagnostic confidence between the MVUS and CDUS images. Results: A total 41 of APN lesions were verified by DMSA (41 lesions) or CECT (3 lesions) during the same hospitalization period with renal US. Among 41 APN lesions, 52.8% was visible on B-mode, 85.4% on CDUS, and 94.3% on MVUS (p<0.001). Comparing the extent and margins of the lesions, MVUS had better results than CDUS in 41.5% of the lesions, CDUS had better results in 6.5% and they were equal in 52% (p<0.001). The diagnostic confidence of the APN lesions was higher for MVUS than CDUS in 36.6%, higher for CDUS than MVUS in 4.9%, and equal in the remaining 58.5% (p<0.05). The interobserver agreement was fair to moderate. Conclusions: MVUS showed improved detectability of hypoperfused areas in paediatric APN and provided higher diagnostic confidence.
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