Ahlström K H, Aström K G
Department of Diagnostic Radiology, Akademiska Sjukhuset, University Hospital, Uppsala, Sweden.
Radiology. 1993 Aug;188(2):549-52. doi: 10.1148/radiology.188.2.8327713.
Thirty-seven consecutive bone biopsies guided with computed tomography were performed in 32 patients by use of three different techniques to penetrate cortical bone and gain access to the lesion. The following instruments were used: a thin bone biopsy needle (12 biopsies), a conventional drill with an outer cannula (six biopsies), and a coaxial biopsy system that consists of a drill with an eccentric tip and an outer cannula (19 biopsies). This eccentric drill makes a hole in the bone larger than the diameter of the cannula and thereby makes it easy to advance the cannula over the drill until the cannula is anchored in the bone. One can then obtain multiple samples through the cannula. The thin bone biopsy needle could not penetrate thick (8 mm thick) cortical bone. The outer cannula was not anchored in the bone when the conventional drill was used. In 16 biopsies, the new coaxial biopsy system penetrated cortical bone with a thickness of 1-8 mm and was anchored there, and lesion samples were obtained through the anchored cannula.
在32例患者中，使用三种不同技术引导计算机断层扫描进行了37次连续骨活检，以穿透皮质骨并进入病变部位。使用了以下器械：细骨活检针（12次活检）、带外套管的传统钻头（6次活检）以及由带偏心尖端的钻头和外套管组成的同轴活检系统（19次活检）。这种偏心钻头在骨头上钻出的孔比套管直径大，从而便于将套管顺着钻头推进，直到套管固定在骨中。然后可以通过套管获取多个样本。细骨活检针无法穿透厚（8毫米厚）的皮质骨。使用传统钻头时，外套管未固定在骨中。在16次活检中，新的同轴活检系统穿透了厚度为1至8毫米的皮质骨并固定在那里，通过固定的套管获取了病变样本。
