Reduction methods for finger irradiation doses in mass disasters: A comparative study

IF 0.8 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Forensic Imaging Pub Date : 2024-04-22 DOI:10.1016/j.fri.2024.200594
Atsushi Iwawaki , Yusei Otaka , Takeru Ishii , Akihiro Ochiai , Shinji Kito , Hideki Saka
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Abstract

Purpose

Since many intraoral radiographs are taken in mass disasters, it is important to reduce the finger irradiation dose to the operator and caregivers in intraoral radiography. However, there is not enough reporting on finger irradiation doses when the detector is placed in the oral cavity of a corpse. The objective of this study was to examine finger irradiation doses when using detector holders and protective gloves and to compare various reduction methods.

Methods

One type of disposable and two types of protective gloves were employed in this study. The average irradiation dose was calculated by dividing the accumulated dose by the number of irradiation events for intraoral imaging of the left mandibular molar; since the dosimeter detects a cumulative dose, irradiation was continued until the dose exceeded 100 μSv. Statistical analysis was performed using one-way analysis of variance, Bonferroni test, and multiple comparisons test (α = 0.05).

Results

A significant dose reduction was observed using protective gloves (maximum: 63%, mean: 59%; p<0.01). No significant difference in the irradiation dose to the finger was observed when disposable gloves were layered on protective gloves. When protective gloves were used with the detector holder held at the end position, the radiation dose reduced by approximately 91% compared to when the detector was held directly in the oral cavity. Implementing these radioprotective measures can reduce the risks of increased radiation exposure and contamination.

Conclusions

The combined use of detector holders and protective gloves was effective in reducing the radiation exposure to the operator's fingers.

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减少大规模灾难中手指辐照剂量的方法:比较研究
目的由于在大规模灾难中会拍摄许多口腔内放射照片,因此在口腔内放射摄影中减少操作者和护理人员的手指辐射剂量非常重要。然而,关于将探测器放置在尸体口腔内时手指辐照剂量的报道并不多。本研究的目的是检测使用探测器支架和防护手套时的手指辐照剂量,并比较各种减少剂量的方法。平均辐照剂量的计算方法是:左下颌臼齿口内成像的累积剂量除以辐照次数;由于剂量计检测的是累积剂量,因此辐照一直持续到剂量超过 100 μSv 为止。统计分析采用单因素方差分析、Bonferroni 检验和多重比较检验(α = 0.05)。将一次性手套叠加在防护手套上时,手指受到的辐照剂量没有明显差异。当使用防护手套并将探测器支架放在末端位置时,与直接将探测器放在口腔中相比,辐射剂量减少了约 91%。结论 联合使用探测器支架和防护手套可有效减少操作员手指受到的辐射照射。
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来源期刊
Forensic Imaging
Forensic Imaging RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
2.20
自引率
27.30%
发文量
39
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