Author

Yong-Jin Kim, Hun-Jae Lee¹, Tack Lee

Place of duty

From the Departments of Urology, ¹Social and Preventive Medicine, Inha University College of Medicine, Incheon, Korea

Title

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

Publicationinfo

The Korean Journal of Urology 2006 Dec 047(12): 1320-1326.

Key_word

Bladder, Ultrasonography, Urine, Reliability and validity

Full-Text

Abstract

Purpose: The accuracy and reliability of a three-dimensional portable ultrasound bladder volume measurement system(BVMS), under two different angles(90^o or 60^o from cranial abdomen), for estimating the bladder volume was assessed. Materials and Methods: 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; 90°: 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. (Korean J Urol 2006;47:1320-1326)

저 자

김용진·이훈재¹·이택

소 속

인하대학교 의과대학 비뇨기과학교실, ¹사회의학교실

제 목

휴대용 삼차원 초음파 측정기를 이용한 방광용적 측정에서 측정각도에 따른 정확도와 진단적 가치

출판정보

대한비뇨기과학회지 2006 Dec 047(12): 1320-1326.