Jung H
Institut für Biophysik und Strahlenbiologie, Universitäts-Krankenhaus Eppendorf, Universität Hamburg.
Rofo. 2000 Jun;172(6):553-6. doi: 10.1055/s-2000-3766.
Age estimation for forensic purposes is, in general, based on a radiogram of the left hand or an orthopantomogram of the teeth. Two examples are given exemplifying the principal procedure that may be applied for estimating the radiation risks associated with the radiological examinations considered.
Mortality risks were calculated using the risk coefficients of ICRP and the mass ratio of radiation-exposed portion to total organ. For a radiogram of the hand, a radiation dose of 0.15 mGy was adopted. For an orthopantomogram the following doses were used: bone surface and red bone marrow 0.25 mGy, skin on the neck 0.56 mGy, thyroid gland 0.053 mGy.
Mortality risks obtained were 5.1 x 10(-8) for a radiogram of the hand and 1.8 x 10(-7) for an orthopantomogram. For comparison, it was estimated that the calculated risks might be equivalent to the mortality risks associated with public road traffic during less than one hour or about 2.5 hours, respectively.
The calculated radiation risks are of a similar order of magnitude as are the risks the respective person is exposed to on the way to the medical examination or to the court. However, the applicability and the limits of the radiological procedures applied for age estimation require extensive and critical discussion.
一般来说，法医鉴定中的年龄估计基于左手的X光片或牙齿的曲面断层片。给出了两个例子，以说明可用于估计与所考虑的放射学检查相关的辐射风险的主要程序。
使用国际放射防护委员会（ICRP）的风险系数以及受辐射部分与整个器官的质量比来计算死亡风险。对于手部X光片，采用的辐射剂量为0.15毫戈瑞。对于曲面断层片，使用以下剂量：骨表面和红骨髓0.25毫戈瑞，颈部皮肤0.56毫戈瑞，甲状腺0.053毫戈瑞。
手部X光片的死亡风险为5.1×10⁻⁸，曲面断层片的死亡风险为1.8×10⁻⁷。作为比较，据估计计算出的风险可能分别相当于在不到一小时或约2.5小时的公共道路交通中所面临的死亡风险。
计算出的辐射风险与各自人员在前往体检或法庭途中所面临的风险处于相似的数量级。然而，用于年龄估计的放射学程序的适用性和局限性需要进行广泛而严谨的讨论。
