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IMAGING & THERAPEUTIC TECHNOLOGY |
1 From the Department of Diagnostic Radiology and Nuclear Medicine, London Health Sciences Centre, 339 Windermere Rd, London, Ontario, Canada N6A 5A5 (D.B.D., A.F., J.C.W.), and the John P. Robarts Research Institute, London, Ontario, Canada (D.B.D., A.F.). Presented as a scientific exhibit at the 1998 RSNA scientific assembly. Received April 13, 1999; revision requested May 17 and final revision received November 3; accepted November 3. Supported in part by grants from the Medical Research Council of Canada and the University Hospital (London) Research Foundation. Address reprint requests to D.B.D. (e-mail: ddowney@irus.rri.on.ca).
Three-dimensional (3D) ultrasonography (US) is rapidly gaining popularity as it moves out of the research environment and into the clinical setting. This modality offers several distinct advantages over conventional US, including 3D image reconstruction with a single pass of the US beam, virtually unlimited viewing perspectives; accurate assessment of long-term effects of treatment; and more accurate, repeatable evaluation of anatomic structures and disease entities. In obstetric imaging, 3D US provides a novel perspective on the fetal anatomy, makes anomalies easier to recognize, facilitates maternal-fetal bonding, and helps families better understand fetal abnormalities. Three-dimensional pelvic US allows volume data sets to be acquired with both transvaginal and transabdominal probes. Viewing multiple 3D power Doppler US images in a fast cine loop has proved useful in angiographic applications. Three-dimensional prostate US can help make accurate volume assessments for dosimetry planning or for estimating prostate-specific antigen levels. In breast imaging, 3D US has the capacity to demonstrate lesion margins and topography, thereby helping differentiate benign from malignant masses. Three-dimensional US can also help determine the need for biopsy and help facilitate needle localization and guidance during biopsy. With recent advances in computer technology and display techniques, 3D US will likely play an increasingly important role in medicine.
Index Terms: Ultrasound (US), technology • Ultrasound (US), three-dimensional, **2.1298 • Ultrasound (US), utilization
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