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Three-dimensional US of the prostate: early experience
U M Hamper1, V Trapanotto, M R DeJong
1Department of Radiology, Johns Hopkins Hospital, Baltimore, MD 21287, USA. umhamper@rad.jhu.edu
Radiology
|September 9, 1999
Summary
Three-dimensional (3D) endorectal ultrasound (US) is feasible for prostate imaging. This technique improves visualization of prostate tumors and their spread compared to traditional 2D US.
Area of Science:
- Medical Imaging
- Urology
- Prostate Cancer Diagnostics
Background:
- Conventional two-dimensional (2D) ultrasonography (US) has limitations in prostate imaging.
- Three-dimensional (3D) imaging offers potential for enhanced visualization.
Purpose of the Study:
- To evaluate the clinical feasibility of 3D endorectal US for prostate gland imaging.
- To compare the diagnostic capabilities of 3D US versus 2D US in detecting prostate abnormalities.
Main Methods:
- Sixteen patients underwent 3D endorectal US prior to prostate biopsy.
- Image acquisition involved creating a data volume with real-time multiplanar reconstruction.
- Images were assessed for lesion detection, gland volume, and extraglandular tumor extension.
Main Results:
- 3D US provided superior visualization of the prostate gland and focal lesions, particularly with coronal plane reconstructions.
- 3D US measurements of prostatic volume were significantly smaller than 2D US (20% difference, P = .006).
- 3D US demonstrated higher accuracy in detecting tumor presence and extraglandular disease spread compared to 2D US.
Conclusions:
- 3D endorectal US is a clinically feasible and user-friendly imaging modality for the prostate.
- The additional anatomical information, especially from the coronal plane, enhances the detection of prostate tumors and their spread.