Welcome to Classifications and Online Calculators in Radiology

This site was build along with the Atlas of Radiology Images to support your knowledge in radiology.

You will find here:

that are used in radiology and related fields with free access.

Moreover:

  • Some pages are accompanied by illustrations
  • All pages contain tags for easy navigation
 

The concept

The concept of this website is based on a previous site that was founded in 2008 and is still up and running. The website is composed as a book, where all sources are properly referenced, according to a good practice in scientific publications.

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    Hydronephrosis in Infants - SFU grading - Society of Fetal Urology

    Hydronephrosis in infants is divided into five grades that were standardized by the Society of Fetal Urology. The grading is usually based on ultrasound, ev. intravenous urography.
     

    Grade Description
    Grade 0 no splitting of renal sinus
    Grade I urine visible in renal pelvis only
    Grade II urine fills intrarenal pelvis, extrarenal pelvis, major calyces are dilated
    Grade III Grade II + minor calyces are uniformly dilated without thinning of parenchyma
    Grade IV Grade III + thinning of parenchyma

    References:

    1. Fernbach SK, Maizels M, Conway JJ. Ultrasound grading of hydronephrosis: Introduction to the system used by the society for fetal urology. Pediatr Radiol. 1993 Oct 1;23(6):478–80.
    2. Ross SS, Kardos S, Krill A, Bourland J, Sprague B, Majd M, et al. Observation of infants with SFU Grades 3–4 hydronephrosis: Worsening drainage with serial diuresis renography indicates surgical intervention and helps prevent loss of renal function. Journal of Pediatric Urology. 2011 Jun;7(3):266–71.
    3. Fernbach SK, Maizels M, Conway JJ. Ultrasound grading of hydronephrosis: Introduction to the system used by the society for fetal urology. Pediatr Radiol. 1993 Oct 1;23(6):478–80.
    4. Kim S-Y, Kim M-J, Yoon CS, Lee MS, Han KH, Lee M-J. Comparison of the reliability of two hydronephrosis grading systems: the Society for Foetal Urology grading system vs. the Onen grading system. Clin Radiol. 2013 Sep;68(9):e484–490.
    5. Keays MA, Guerra LA, Mihill J, Raju G, Al-Asheeri N, Geier P, et al. Reliability assessment of Society for Fetal Urology ultrasound grading system for hydronephrosis. J Urol. 2008 Oct;180(4 Suppl):1680–1682; discussion1682–1683
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