Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2015 Aug 31:4:186.
doi: 10.4103/2277-9175.164005. eCollection 2015.

Agreement between static magnetic resonance urography and diuretic renal scintigraphy in patients with ureteropelvic junction obstruction after pyeloplasty

Hamid Mazdak  1 , Mehdi Karam  2 , Fatemeh Ghassami  2 , Alireza Malekpour  3
Affiliations

Agreement between static magnetic resonance urography and diuretic renal scintigraphy in patients with ureteropelvic junction obstruction after pyeloplasty

Hamid Mazdak et al. Adv Biomed Res. .

Abstract

Background: Ureteropelvic junction obstruction (UPJO) is the most common cause of hydronephrosis within childhood that usually treat by surgery. According to anatomical variations in different individuals, scheduling similar procedures for all patients is not suitable, and thus the best decision for an appropriate surgical technique should be considered separately for each patient. Regardless of the type of applied technique, creating a funnel-shape UPJ with a suitable size is a successful treatment. In this context, the assessment of a successful surgical treatment in a short-term follow-up means repairing revealed anatomical defects. The present study aimed to compare the diagnostic value of static magnetic resonance urography (MRU) and diuretic-based renalscintigraphy (DRS) in patients with UPJO after pyeloplasty.

Materials and methods: A total of 30 consecutive patients with UPJO, who underwent unilateral pyeloplasty between 2012 and 2013 were assessed. All subjects underwent DRS and also MRU about 1-month after the former procedure.

Results: The Kendall's tau correlation showed a very strong correlation between results of MRU and diuretic renal scintigraphy (r = 0.932, P < 0.001). This strong correlation was also shown by Somers'd test (r = 0.932, P < 0.001) similarly.

Conclusions: Our study shows a strong agreement between DRS and MRU to assess UPJO. MRU static fluid has a high accuracy for assessment of renal system anatomy. Due to the lack of dangerous consequences of contrast materials, MRU can be the best option instead of DRS.

Keywords: Accuracy; pyeloplasty; scintigraphy; ureteropelvic junction obstruction; urography.

PubMed Disclaimer

Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
Frequency of normal, dilated-nonobstructed and obstructed report in magnetic resonance urography and diuretic-based renalscintigraphy imaging
See this image and copyright information in PMC

References

    1. McDaniel BB, Jones RA, Scherz H, Kirsch AJ, Little SB, Grattan-Smith JD. Dynamic contrast-enhanced MR urography in the evaluation of pediatric hydronephrosis: Part 2, anatomic and functional assessment of ureteropelvic junction obstruction [corrected] AJR Am J Roentgenol. 2005;185:1608–14. - PubMed
    1. Lawler LP, Jarret TW, Corl FM, Fishman EK. Adult ureteropelvic junction obstruction: Insights with three-dimensional multi-detector row CT. Radiographics. 2005;25:121–34. - PubMed
    1. Kausik S, Segura JW. Surgical management of ureteropelvic junction obstruction in adults. Int Braz J Urol. 2003;29:3–10. - PubMed
    1. Kogan BA. Disorders of the ureter and ureteropelvic junction. In: Tanagho EA, McAninch JW, editors. Smith's General Urology. 17th ed. New York: McGraw Hill; 2008. pp. 564–8.
    1. Nakada SY, Hsu TH. Management of upper urinary tract obstruction. In: Wein AJ, Kavoussi LR, Novick AC, Partin AW, Peters CA, editors. Campbell-Walsh Urology. 10th ed. Philadelphia: Elsevier Saunders; 2012. pp. 1141–7.