De Flaviis L, Scaglione P, Del Bò P, Nessi R
Department of Radiology, Istituti Clinici di Perfezionamento, Milan, Italy.
J Trauma. 1988 Mar;28(3):400-4. doi: 10.1097/00005373-198803000-00018.
The value of xeroradiography and of high-resolution ultrasonography was compared on minute samples of foreign bodies of various radiographic density (wood, plastic, metallic wires and needles, glass, fish bones). The samples were introduced into pieces of veal meat at different angles with respect to the surface. Xeroradiographic images were taken at 60 kVp, with 32 mAs, and were developed in both positive and negative mode. The echographic examinations were performed using a real-time sector 10 MHz probe placed directly over the specimen, with constant gain rates. The results confirm the value of xeroradiography and demonstrate the effectiveness of high-resolution ultrasonography for the detection of minute foreign bodies. Some materials showed a peculiar echographic pattern, like sand, that corresponded to a frank acoustic shadow, or like metal and glass, showing a comet tail of reverberation artifacts. Wood and fish bones were well outlined, while plastic was less effectively represented. High-resolution ultrasonography is considered to be a first-line technique in searching for many kinds of minute foreign bodies, to be used in combination with xeroradiography in routine clinical examination.
对不同放射密度（木材、塑料、金属丝和针、玻璃、鱼骨）的微小异物样本，比较了干板X线照相术和高分辨率超声检查的价值。将样本以相对于表面不同的角度插入小牛肉片中。干板X线照相图像在60 kVp、32 mAs条件下采集，并以正片和负片模式显影。超声检查使用直接置于标本上方的10 MHz实时扇形探头进行，增益率恒定。结果证实了干板X线照相术的价值，并证明了高分辨率超声检查对检测微小异物的有效性。一些材料呈现出特殊的超声图像模式，如沙子，对应明显的声影，或如金属和玻璃，呈现出混响伪像的彗尾。木材和鱼骨轮廓清晰，而塑料的显示效果较差。高分辨率超声检查被认为是寻找多种微小异物的一线技术，在常规临床检查中可与干板X线照相术联合使用。
