The Accuracy and Diagnostic Value of Three-Dimensional Portable Bladder Volume Measurement System in the Measurement of Bladder Volume according to the Different Angling of Ultrasound Transducer.
10.4111/kju.2006.47.12.1320
- Author:
Yong Jin KIM
1
;
Hun Jae LEE
;
Tack LEE
Author Information
1. Department of Urology, Inha University College of Medicine, Incheon, Korea. lt11@inha.ac.kr
- Publication Type:Original Article
- Keywords:
Bladder;
Ultrasonography;
Urine;
Reliability and validity
- MeSH:
Abdomen;
Body Mass Index;
Catheterization;
Catheters;
Diagnosis;
Humans;
Reproducibility of Results;
Transducers*;
Ultrasonography*;
Urinary Bladder*
- From:Korean Journal of Urology
2006;47(12):1320-1326
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The accuracy and reliability of a three-dimensional portable ultrasound bladder volume measurement system (BVMS), under two different angles (90degrees or 60degrees from cranial abdomen), for estimating the bladder volume was assessed. MATERIALS: Ultrasonographic studies of the bladder volume, using a newly developed portable (2.4 kg) BVMS (BioCon-500, Mcube Technology, Korea), with real bladder images, were conducted on 154 patients (29-77 years old; M:F=116:38), at angles of 90 and 60 degrees, on the abdomen 2 cm above the symphysis pubis. This ultrasound-estimated volume was compared with the immediately catheterized volume. Comparison of BVMS estimated volumes with the catheterized volumes was performed according to the angles using the Pearson correlation coefficient, intra-class correlation coefficient (ICC) concordance and fractional absolute error (FAE). RESULTS: Good agreement between the BVMS estimated and catheterized volumes was found for both angles (60: r=0.986, p<0.001, ICC=0.965; 90degrees : r=0.931, p<0.001, ICC=0.992). Although this was not significant, the linear correlation of the 60 degree estimation values seems to be higher than for those obtained at 90 degree's. Various factors, such as age, sex, body mass index (BMI) and diagnosis, showed no correlation with the difference between the catheterized and BVMS estimated bladder volumes. CONCLUSIONS: Volume estimation using this BVMS is recommended as an alternative to catheterization for the determination of the bladder volumes both before and after voiding. The volume estimation of the transducer at 60 degrees, rather than that at 90 degrees, is recommended due to the field of view (FOV) limitation on ultrasound. However, these results demonstrate the need to standardize these procedures for volume estimations using BVMS.
