Lockwood G R, Ryan L K, Foster F S
Department of Medical Biophysics, University of Toronto, Ontario, Canada.
Ultrason Imaging. 1993 Jan;15(1):1-13. doi: 10.1177/016173469301500101.
The design, construction and fabrication of a high frequency needle-based ultrasound imaging system is described. A miniature lead zirconate titanate transducer was mounted opposite a parabolic mirror in a stainless steel needle. By inserting the needle into a tissue, a cross section image of the tissue can be made. Two needle probes were built, a 45 MHz 2.8 mm diameter probe with 125 microns lateral, 55 microns axial resolution and a 55 MHz 1.6 mm diameter probe with 105 microns lateral, 40 microns axial resolution. Preliminary phantom and in vitro tissue images demonstrate the feasibility of high frequency needle-based imaging.
本文描述了一种基于高频针型超声成像系统的设计、构建与制造。一个微型锆钛酸铅换能器安装在不锈钢针内与抛物面镜相对的位置。通过将针插入组织中，可以获取该组织的横截面图像。构建了两个针型探头，一个是直径2.8毫米、频率45兆赫兹的探头，横向分辨率为125微米，轴向分辨率为55微米；另一个是直径1.6毫米、频率55兆赫兹的探头，横向分辨率为105微米，轴向分辨率为40微米。初步的体模和体外组织图像证明了基于高频针型成像的可行性。
