The radiological incident in Cochabamba (Bolivia, 2002), where members of the general public where exposed to an unshielded Ir-192 radiation source whilst traveling on a bus was replicated here in an attempt to asses and evaluate emerging retrospective dosimetry methodologies using objects of daily life, that are either carried on or close to the human body or can be found in the vicinity of an individual. For this purpose an accidental exposure was simulated under controlled conditions in a secured area and an unshielded radioactive source was placed in the cargo compartment of a bus resembling a Radiological Exposure Device (RED). Water canisters and anthropomorphic phantoms were placed at selected seats on the bus and equipped with personal objects (mobile phones, chip cards) that had reference dosimeters attached to them. At one seat position, additional salt dosimeters and dental ceramics in the phantom were also tested. Two types of 8 h exposures were conducted: one with a source activity similar to the one in Cochabamba (0.65 TBq) and one with a stronger source (1.5 TBq) in order to have more samples with absorbed doses above the detection limit of the different methods. For 43 out of 61 resistor and glass samples from mobile phones, measured doses agreed within error limits with reference doses, but for some materials more research is needed for a more reliable application. In 13 cases outliers with a significant dose over- or underestimation were observed, 10 of these could be identified by combining the results of at least three dose assays. The field test thus evaluated the potential and limitation of retrospective dosimetry using personal objects and demonstrated the importance of using a multi-dosimeter approach to increase robustness of the method.

在科恰班巴（玻利维亚，2002年）发生的放射性事件中，在这里复制了在公共汽车上旅行时暴露于非屏蔽Ir-192辐射源的普通民众的情况，以试图评估和评估日常使用的每日剂量学方法的回顾性剂量学方法。生命可以携带或靠近人体，也可以在个体附近找到。为此，在安全区域内受控条件下对意外暴露进行了模拟，并将未屏蔽的放射源放置在类似于放射暴露设备（RED）的公共汽车的货舱中。将水罐和拟人化幻影放置在公交车上选定的座位上，并配备附有参考剂量计的个人物品（手机，芯片卡）。在一个座位上 还测试了幻影中的其他盐剂量计和牙科陶瓷。进行了两种类型的8 h暴露：一种具有与Cochabamba中的一种相似的放射源活性（0.65 TBq），另一种具有更强的放射源（1.5 TBq），以便吸收更多的样品，其吸收剂量高于不同样品的检测极限方法。在手机的61个电阻和玻璃样品中，有43个样品的测量剂量在误差范围内与参考剂量一致，但是对于某些材料，需要更深入的研究以实现更可靠的应用。在13个观察到的离群值中，有明显的剂量高估或低估的异常值，可以通过组合至少三个剂量测定的结果来识别其中的10个。