Transrectal Ultrasonography: Error of Prostatic Measurement / 대한비뇨기과학회지
Korean Journal of Urology
;
: 47-51, 1999.
Article
in Korean
| WPRIM
| ID: wpr-44457
ABSTRACT
PURPOSE:
Transrectal ultrasonography is known to be an effective tool for the determination of prostatic volume. But the irregularity of shape and the limitation of reliability by intra-observer and inter-observer bias may influence over the results. I would like to represent several factors for the error of transrectal ultrasonographic measurement of prostatic volume. MATERIALS ANDMETHODS:
Errors for transrectal ultrasonographic volume determination of the prostate, based on the principle of HWL(Height x Width x Length x pi/6) are presented. Some artificial prostatic models were made and compared between the real volumes and calculated results. The intra-observer error was determined in 39 cases by repeated measurements. The inter-observer error was also determined in 32 cases by repeated measurements of different observer.RESULTS:
There were significant discrepancies between real volumes and calculated results and the range of error by shape was -19?38%. The ranges of intra-observer and inter-observer errors with 95% confidence interval were -7.4?6.1% and 2.7?9.9%.CONCLUSIONS:
Errors by several factors should be considered for the clinical application of measured prostatic volume by ultrasonography irrespective of its statistical validity and reliability.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Prostate
/
Bias
/
Reproducibility of Results
/
Ultrasonography
Type of study:
Diagnostic study
/
Prognostic study
Language:
Korean
Journal:
Korean Journal of Urology
Year:
1999
Type:
Article
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