Imaging artifacts of medical instruments in ultrasound-guided interventions
Imaging artifacts of medical instruments in ultrasound-guided interventions
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DOI：
10.7863/jum.2007.26.10.1303
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发表时间：
2007-10-01
影响因子：
2.3
通讯作者：
Dupont, Pierre E.
中科院分区：
文献类型：
--
作者：
Huang, Jinlan;Triedman, John K.;Dupont, Pierre E.
目标。实时三维（3D）超声成像有可能成为微创手术的主要成像技术。阻碍其广泛应用的一个障碍是手术器械会产生成像伪影，这可能会混淆它们的位置、方向和几何形状，并模糊附近的组织。本研究的目的是识别和描述在三维超声成像引导下介入过程中金属器械可能产生的伪影类型。方法。进行了三次影像学检查。首先，在体外鉴定了不锈钢棒的成像伪影并对其进行了声学表征。其次，对3种典型微创器械（体外和体内）进行成像，并分析其伪影。第三项研究比较了由3种不同材料组成的不锈钢棒和表面粗糙和涂层的不锈钢棒的成像伪影强度（体外和体内）。结果。对于不锈钢棒，所有观察到的人工制品都进行了描述和说明，并解释了它们的物理起源。3种微创器械产生的假影通过使用棒观察到的假影来表征。最后，通过使用替代材料或表面改性，可以大大减少人工制品。结论。3D超声图像中的仪器伪影可能比2d图像中的仪器伪影更令人困惑。然而，实时三维超声成像可以有效地用于微创器械的体内成像，通过使用伪影缓解技术，包括仔细选择探头和切口位置，以及通过修改器械。
Objective. Real-time 3-dimensional (3D) ultrasound imaging has the potential to become a dominant imaging technique for minimally invasive surgery. One barrier to its widespread use is that surgical instruments generate imaging artifacts, which can obfuscate their location, orientation, and geometry and obscure nearby tissue. The purpose of this study was to identify and describe the types of artifacts which could be produced by metallic instruments during interventions guided by 3D ultrasound imaging. Methods. Three imaging studies were performed. First, imaging artifacts from stainless steel rods were identified in vitro and acoustically characterized. Second, 3 typical minimally invasive instruments were imaged (in vitro and in vivo), and their artifacts were analyzed. The third study compared the intensity of imaging artifacts (in vitro and in vivo) from stainless steel rods with rods composed of 3 different materials and stainless steel rods with roughened and coated surfaces. Results. For the stainless steel rods, all observed artifacts are described and illustrated, and their physical origins are explained. Artifacts from the 3 minimally invasive instruments are characterized with the use of the artifacts observed with the rods. Finally, it is shown that artifacts can be greatly reduced through the use of alternate materials or by surface modification. Conclusions. Instrument artifacts in 3D ultrasound images can be more confusing than those from the same instruments imaged in 2 dimensions. Real-time 3D ultrasound imaging can, however, be used effectively for in vivo imaging of minimally invasive instruments by using artifact mitigation techniques, including careful selection of probe and incision locations, as well as by instrument modification.