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Three-dimensional power Doppler sonography: imaging and quantifying blood flow and vascularization
H Pairleitner1, H Steiner, G Hasenoehrl
1Department of Obstetrics and Gynecology, General Hospital Salzburg, Austria.
Summary
Three-dimensional power Doppler sonography can image low-velocity blood flow in adnexal masses. This technique, using a new computer-assisted method, demonstrated reproducible results for vascularization indices, potentially aiding in neoangiogenesis prediction.
Area of Science:
- Medical Imaging
- Gynecologic Ultrasound
- Vascular Biology
Background:
- Assessing blood flow in adnexal masses is crucial for diagnosis.
- Low-velocity flow can be challenging to image with conventional ultrasound.
Purpose of the Study:
- To evaluate the feasibility of imaging low-velocity blood flow in adnexal masses using 3D power Doppler sonography.
- To analyze 3D power Doppler sonography data with a novel computer-assisted method.
- To determine the reproducibility of this imaging technique.
Main Methods:
- Transvaginal 3D power Doppler sonography was performed on adnexal masses.
- A 'cube' (volume of interest) encompassing vessels was defined and analyzed using specialized software.
- Five vascularization indices (VI, FI, VFI) were calculated.
- Intraobserver and interobserver reproducibility were assessed.
Main Results:
- Successful imaging of low-velocity blood flow in all adnexal masses was achieved.
- Non-vascular flow in endometriosis was detected.
- The 3D power Doppler sonography with the cube method showed reproducible results for most indices (VI, FI, VFI 1).
Conclusions:
- 3D power Doppler sonography is feasible for imaging low-velocity blood flow in adnexal masses.
- The computer-assisted cube method provides reproducible vascularization information.
- These indices may serve as novel predictors for neoangiogenesis, though clinical relevance needs further study.