Magnetic resonance voiding cystourethrography (MRVCUG): a potential alternative to standard VCUG.
J Magn Reson Imaging
; 38(4): 897-904, 2013 Oct.
Article
in En
| MEDLINE
| ID: mdl-23417820
ABSTRACT
PURPOSE:
To evaluate the accuracy and feasibility of magnetic resonance voiding cystourethrography (MRVCUG), with or without contrast medium, in detecting vesicoureteral reflux (VUR) by comparison with conventional voiding cystourethrography (VCUG). MATERIALS ANDMETHODS:
Seventy-five patients underwent a series of 55 indirect MRVCUG (I-MRVCUG) and 61 direct MRVCUG (D-MRVCUG) between 2003 and 2009. We retrospectively compared the results from I-MRVCUG and D-MRVCUG with those from VCUG on 150 kidney-ureter units. Ratios of successful completion of the two types of MRVCUG were analyzed in 116 examinations according to sex, age, and among the two groups, with or without sedation.RESULTS:
D-MRVCUG was superior to I-MRVCUG in detecting VUR (sensitivity 96.8% vs. 76.9%; specificity 96.3% vs. 88.7%; agreement 96.6% vs. 83.7%; kappa 0.83 [95% confidence interval (CI) 0.72, 0.94] vs. 0.55 [95% CI 0.41, 0.69]). The overall ratio of successful completion of the two types of MRVCUG was 76.7% (89/116) there was no significant difference between I-MRVCUG and D-MRVCUG. The successful completion rate was significantly lower in MRVCUG in toddlers compared with preschoolers, infants, schoolchildren, and adults (P < 0.001).CONCLUSION:
The two types of MRVCUG (I-MRVCUG and D-MRVCUG) are promising tests without radiation exposure. Both I-MRVCUG and D-MRVCUG are feasible for children except for toddlers.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Vesico-Ureteral Reflux
/
Urinary Bladder
/
Magnetic Resonance Imaging
Type of study:
Diagnostic_studies
/
Observational_studies
Limits:
Adolescent
/
Adult
/
Child
/
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
/
Middle aged
Language:
En
Journal:
J Magn Reson Imaging
Journal subject:
DIAGNOSTICO POR IMAGEM
Year:
2013
Document type:
Article
Affiliation country:
Japón