乳突许(Ｓｃｈｕｅｌｌｅｒ)、梅氏(Ｍｅｙｅｒ)位片在乳突疾病诊断中居重要位置。在实际工作中,其投照常常让放射技师们棘手,废片率居高不下,据统计可高达37%。虽然大型Ｘ线机的引进给投照带来极大便利,但国内大多数医院尚未普及,尤其是广大　　图1　投照板示意图　正面观(右 Schueller and Meyer are important in the diagnosis of mastoid disease. In practice, radiologists are often struggling with radiographs, and the rate of scrap films remains high, according to statistics, up to 37%. Although the introduction of large-scale X-ray machine to bring great convenience for the projection, but the majority of domestic hospitals have not yet been widespread, especially the majority of Figure 1 Projection plate schematic view of the right