Gyekye Prince Kwabena, Simon Adu, Geoffrey Emi-Reynolds, Johnson Yeboah, Stephen Inkoom, Engmann Cynthia Kaikor, Samuel Wotorchi-Gordon
Radiation Protection Institute, Ghana Atomic Energy Commission, Legon, Accra, Ghana.
J Med Phys. 2013 Oct;38(4):185-8. doi: 10.4103/0971-6203.121196.
Radiation dose to organs of 100 adult patients undergoing lumbar spine (LS) radiography at a University Hospital have been assessed. Free in air kerma measurement using an ionization chamber was used for the patient dosimetry. Organ and effective dose to the patients were estimated using PCXMC (version 1.5) software. The organs that recorded significant dose due to LS radiography were lungs, stomach, liver, adrenals, kidney, pancreas, spleen, galbladder, and the heart. It was observed that the stomach recorded the highest dose (48.2 ± 1.2 μGy) for LS anteroposterior (AP). The spleen also recorded the highest dose (41.2 ± 0.5 μGy) for LS lateral (LAT). The mean entrance surface air kerma (ESAK) of LS LAT (122.2 μGy) was approximately twice that of LS AP (76.3 μGy), but the effective dose for both examinations were approximately the same (LS LAT = 8.6 μSv and LS AP = 10.4 μSv). The overall stochastic health effect of radiation to patients due to LS radiography in the University Hospital is independent of the projection of the examination (AP or LAT).
已对某大学医院100名接受腰椎（LS）X线摄影的成年患者的器官辐射剂量进行了评估。使用电离室进行空气比释动能测量以用于患者剂量测定。使用PCXMC（版本1.5）软件估算患者的器官剂量和有效剂量。因腰椎X线摄影而记录到显著剂量的器官有肺、胃、肝脏、肾上腺、肾脏、胰腺、脾脏、胆囊和心脏。观察到在腰椎前后位（AP）摄影中胃记录到的剂量最高（48.2±1.2μGy）。在腰椎侧位（LAT）摄影中脾脏记录到的剂量也最高（41.2±0.5μGy）。腰椎侧位摄影的平均入射表面空气比释动能（ESAK）（122.2μGy）约为腰椎前后位摄影（76.3μGy）的两倍，但两种检查的有效剂量大致相同（腰椎侧位摄影=8.6μSv，腰椎前后位摄影=10.4μSv）。该大学医院中因腰椎X线摄影对患者造成的辐射总体随机健康影响与检查的投照方式（前后位或侧位）无关。
