Contribution of dual-energy computed tomography in the differentiation of illicit drugs.

Q4 Medicine Archiwum Medycyny Sadowej i Kryminologii Pub Date : 2020-01-01 DOI:10.5114/amsik.2020.104536

Antoine Boizet, Julien Ognard, Ons Hmandi, Claire Saccardy, David Bourhis, Douraied Ben Salem

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Abstract

Introduction: The objective of this study was to compare the dual-energy behaviour of the main illicit substances as well as their cutting agents in order to be able to differentiate them.

Material and methods: Cocaine, heroin, MDMA, and cannabis as well as 3 adulterants, 2 diluents, and water were scanned at 90 kV and then at 140 kV on a single X-ray tube computed tomography (CT) scanner. The data acquired enabled a mapping of the attenuation values to 90 and 140 kVp as well as a resulting dual-energy index (DEI) mapping.

Results: Drugs, cocaine, MDMA (pill), and cannabis had a positive DEI (0.014-0.008), while heroin and MDMA (powder) had a negative DEI (-0.016 and -0.013). The DEI of water was -0.01 and that of taurine was -0.018. Adulterants had negative DEI, while diluents had a positive DEI. All DEI were significantly different (p < 0.01).

Conclusions: Cocaine and heroin can be clearly differentiated using DEI.

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双能计算机断层扫描在鉴别违禁药物中的作用。

前言:本研究的目的是比较主要非法物质及其切割剂的双能行为，以便能够区分它们。材料和方法:将可卡因、海洛因、MDMA、大麻以及3种掺杂物、2种稀释剂和水分别在一台x射线管计算机断层扫描(CT)扫描仪上进行90千伏和140千伏的扫描。获得的数据可以将衰减值映射到90和140 kVp，以及由此产生的双能量指数(DEI)映射。结果:毒品、可卡因、MDMA(片剂)和大麻的DEI为阳性(0.014 ~ 0.008)，海洛因和MDMA(粉剂)的DEI为阴性(-0.016和-0.013)。水的DEI为-0.01，牛磺酸的DEI为-0.018。掺假剂DEI为负，稀释剂DEI为正。各组DEI差异均有统计学意义(p < 0.01)。结论:DEI可明确区分可卡因与海洛因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Archiwum Medycyny Sadowej i Kryminologii Medicine-Medicine (all)

CiteScore

0.60

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0.00%

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审稿时长

12 weeks

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