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[A reliability analysis of transrectal echographic estimation of prostatic volume]
L Llanes González1, M Luján Galán, A Páez Borda
1Servicio de Urología, Hospital Universitario de Getafe, Madrid.
Actas Urologicas Espanolas
|March 25, 1999
Summary
Transrectal ultrasound reliably estimates prostate volume. This imaging technique accurately measures total prostatic volume, showing minimal difference compared to pathological specimens.
Area of Science:
- Urology
- Medical Imaging
- Oncology
Background:
- Accurate estimation of prostatic volume is crucial for managing prostate cancer.
- Transrectal ultrasound (TRUS) is a common imaging modality used in urology.
- Previous methods for prostatic volume estimation may lack precision.
Purpose of the Study:
- To determine the reliability of transrectal ultrasound in estimating prostatic volume.
- To validate TRUS-based volume measurements against pathological findings.
Main Methods:
- A study involving 27 patients with prostate cancer undergoing radical prostatectomy.
- Prostatic volume was assessed using transrectal ultrasound with the ellipsoid equation.
- TRUS-derived volumes were compared to measurements from radical prostatectomy specimens and their weights.
Main Results:
- Mean prostatic volume by TRUS was 38.77 cc, compared to 38.46 cc in pathological specimens (mean difference 0.31 cc, not significant).
- A high coefficient of correlation (0.80) was found between TRUS volume and specimen volume.
- A strong correlation (0.86) was observed between TRUS volume and specimen weight.
Conclusions:
- Transrectal ultrasound is an accurate and reliable tool for calculating total prostatic volume.
- TRUS measurements correlate well with actual prostatic tissue volume and weight.
- This supports the use of TRUS in clinical settings for precise prostatic volume assessment.