Real-time rectilinear volumetric imaging using a periodic array
Real-time rectilinear volumetric imaging using a periodic array
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DOI：
10.1016/s0301-5629(02)00543-4
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发表时间：
2002-07-01
影响因子：
2.9
通讯作者：
Smith, SW
中科院分区：
文献类型：
--
作者：
Yen, JT;Smith, SW
当前的实时相控阵体积扫描仪使用2-D阵列来扫描金字塔体积，该金字塔体积包括在高度方向上堆叠的许多扇区扫描。这种扫描格式主要用于心脏成像，以避免肋骨的干扰。然而，具有靠近换能器的更宽视场（FOV）的实时直线体积扫描可以证明对于腹部、乳房或血管成像更有用。在我们以前的工作中，一个94 × 94米尔斯十字阵列工作在5 MHz的制造，并使用二维阵列和杜克实时三维扫描仪的第一个实时直线体积图像。米尔斯十字阵的FOV为30 X 8 X 60 mm。尽管米尔斯十字阵取得了合理的成功，但该阵存在离轴灵敏度差和一个方向上FOV较小的局限性。为了克服这些限制，开发了一种新的包含超过65，500个元素的直线阵列，其具有周期性几何形状，以将FOV增加到30圈X 30 mm X 60 mm，并提高离轴灵敏度。获得了仿组织模型和活体颈动脉的图像。此外，频谱和彩色血流多普勒结果从脉动流体模获得。（电子邮件：jesse. duke.edu）（C）2002年世界医学超声生物学联合会。
Current real-time phased array volumetric scanners use a 2-D array to scan a pyramidal volume comprised of many sector scans stacked in the elevation direction. This scan format is primarily useful for cardiac imaging to avoid interference from the ribs. However, a real-time rectilinear volumetric scan with a wider field-of-view (FOV) close to the transducer could prove more useful for abdominal, breast or vascular imaging. In our previous work, a 94 X 94 Mills cross array operating at 5 MHz was fabricated, and the first real-time rectilinear volumetric images were made using a 2-D array and the Duke real-time 3-D scanner. The FOV for the Mills cross was 30 X 8 X 60 mm. Despite reasonable success with the Mills cross array, the array had limitations of poor off-axis sensitivity and a smaller FOV in one direction. To overcome these limitations, a new rectilinear array containing over 65,500 elements was developed with a periodic geometry to increase the FOV to 30 turn X 30 nun X 60 mm and improve the off-axis sensitivity. Images of tissue-mimicking phantoms and the carotid artery in vivo were obtained. In addition, spectral and color flow Doppler results from a pulsatile flow phantom were obtained. (E-mail: jesse.yen@duke.edu) (C) 2002 World Federation for Ultrasound in Medicine Biology.