目的　改进静脉肾盂造影的方法 ,减少造影过程中被检者的不良反应。方法　用东芝 5 0 0maX线机 ,选用头低脚高位 ,使床面与水平面呈 2 0°～ 2 5°,可减少腹压。结果　双肾造影显示良好 ,双侧输尿管上段显示清楚。结论　改良后的头低脚高位 ,腹压维持在 0 .39～ 0 .4 9KPa之间 ,改善了病人因腹压过高而引起的呕吐、呼吸紧张等不良反应 ,造影效果好 Objective To improve the method of intravenous pyelography and reduce the adverse reactions of the subjects during the imaging. Methods Toshiba 500maX line machine, the lower head high, the bed and the horizontal was 20 ° ~ 2 5 °, can reduce abdominal pressure. Results double renal angiography showed good bilateral ureteral showed clearly. Conclusions The improved head-lower high position and abdominal pressure are maintained at between 0.39 ~ 0.49KPa, which can improve adverse effects such as vomiting and respiratory tension caused by high abdominal pressure and improve the imaging effect