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Three-dimensional (3D) contrast-enhanced power Doppler imaging in Legg-Calvé-Perthes disease
A S Doria1, R Guarniero, L J Molnar
1Department of Diagnostic Imaging, Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G 1X8 Canada.
Background:
The revascularization process of the femoral head in Legg-Calvé-Perthes disease has not been well studied on Doppler images. We incorporated two relatively new developments in ultrasound: 3D power Doppler imaging combined with the use of contrast agents.
Patients And Methods:
We studied two children with unilateral Legg-Calvé-Perthes disease through anterior-sagittal approaches with pre- and post-contrast power Doppler images, acquired in 2D and 3D planes.
Results:
In one patient, intraosseous vessels were detected only in the pathological femoral head both pre- and post-contrast administration. In the other, no flow was identifiable without the use of contrasts.
Conclusion:
The use of ultrasound contrast agents combined with 3D imaging modalities offers new alternative methods for visualization of intraosseous vascularity.