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Superb microvascular imaging for the detection of parenchymal perfusion in normal and undescended testes in young children

 Yong Seung Lee  ;  Myung-Joon Kim  ;  Sang Won Han  ;  Hye Sun Lee  ;  Young-Jae Im  ;  Hyun Joo Shin  ;  Mi-Jung Lee 
 European Journal of Radiology, Vol.85(3) : 649-656, 2016 
Journal Title
 European Journal of Radiology 
Issue Date
Cryptorchidism/diagnostic imaging* ; Humans ; Infant ; Male ; Microvessels/diagnostic imaging* ; Prospective Studies ; Reproducibility of Results ; Testis/blood supply* ; Testis/diagnostic imaging* ; Ultrasonography, Doppler
Child ; Cryptorchidism ; Doppler ultrasonography ; Perfusion ; Undescended testis
OBJECTIVES: To compare the detectability of perfusion difference between normal and undescended testes (UDT) in young children using conventional Power Doppler Imaging (PDI) and Superb Microvascular Imaging (SMI). METHODS: We prospectively performed testicular ultrasonography including PDI and SMI for the evaluation of microvascular flow in young children. Microvascular flow was categorized into four grades (grade 0-4). Statistical analysis was performed to compare the differences between undescended and normal testes. RESULTS: We imaged 40 testes from 20 boys (age, 2-29 months). Testes sizes and volumes were similar between the 29 normal and 11 UDT. PDI demonstrated low grade flow in most normal (19/29) and UDT (11/11) without difference (P=0.130). However, SMI detected differences in flow grades between normal and UDT (P<0.001). In univariate analysis, age (odds ratio [OR], 0.829; P=0.012) and low grade flow on SMI (OR of grade 0, 51.886 with P<0.001 and OR of grade 1, 14.29 with P=0.017) were associated with UDT. These parameters were also significant in multivariate analysis with larger area under the curve, compared with the results using PDI (0.892 vs. 0.726, P=0.002). CONCLUSIONS: SMI can detect perfusion difference between normal and UDT in young children better than PDI.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
김명준(Kim, Myung Joon) ORCID logo https://orcid.org/0000-0002-4608-0275
신현주(Shin, Hyun Joo) ORCID logo https://orcid.org/0000-0002-7462-2609
이미정(Lee, Mi-Jung) ORCID logo https://orcid.org/0000-0003-3244-9171
이용승(Lee, Yong Seung) ORCID logo https://orcid.org/0000-0003-3778-9888
이혜선(Lee, Hye Sun) ORCID logo https://orcid.org/0000-0001-6328-6948
임영재(Im, Young Jae)
한상원(Han, Sang Won) ORCID logo https://orcid.org/0000-0003-0941-1300
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