Applicability of postmortem CT organ-selective volume rendering in evaluating liver and heart injuries

IF 0.8 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Forensic Imaging Pub Date : 2023-10-14 DOI:10.1016/j.fri.2023.200568
Haruki Fukuda , Akira Hayakawa , Hiroyuki Tokue , Yoichiro Takahashi , Arisa Nagaoka , Rieko Kubo , Yoshihiko Kominato , Rie Sano
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Abstract

Objectives

Postmortem computed tomography (PMCT) is widely used in forensic cause-of-death investigations, and 3D volume rendering is commonly employed for visualizing PMCT data. However, no studies have investigated the effectiveness of organ-selective 3D volume rendering for detection of organ injuries such as liver and heart. This study aimed to assess whether selective volume rendering could enhance the detectability of organ damage that is generally difficult to observe in 2DCT images.

Material and methods

Using 22 selected cases of liver or heart injury, the detectability of the injury in 2DCT images and selective volume-rendered images was compared with actual autopsy findings.

Results

Among 15 cases of liver injury confirmed at autopsy, 2DCT imaging detected two, whereas selective volume-rendered imaging detected one. Furthermore, among 17 cases of cardiac injury, 2DCT imaging detected two, whereas selective volume-rendered imaging detected four. Thus, a small proportion of liver and heart injury cases were detectable using 2DCT imaging or selective volume rendering. In all cases where selective volume rendering identified an injury, the injury was not identified by radiologist interpretation of the 2DCT images, although a review of the 2DCT images did allow identification of the injury when corroborated by the findings of selective volume rendering. One additional case demonstrated the usefulness of selective volume rendering for estimation of puncture wound direction.

Conclusions

Although selective volume rendering has seldom been effective in detecting heart or liver damage, organ-selective volume rendering may provide clues for detection of injuries that are often overlooked in 2DCT images alone.

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死后CT器官选择性体积绘制在评估肝脏和心脏损伤中的适用性
目的尸检计算机断层扫描(PMCT)广泛应用于法医死因调查,三维体绘制通常用于可视化PMCT数据。然而,没有研究调查器官选择性3D体积绘制用于检测肝脏和心脏等器官损伤的有效性。本研究旨在评估选择性体绘制是否可以提高器官损伤的可检测性,而器官损伤通常难以在2DCT图像中观察到。材料和方法选择22例肝脏或心脏损伤病例,将2DCT图像和选择性体积渲染图像中损伤的可检测性与实际尸检结果进行比较。结果尸检证实的15例肝损伤病例中,2DCT检查发现2例,而选择性容积显像检查发现1例。此外,在17例心脏损伤病例中,2DCT成像检测到2例,而选择性容积成像检测到4例。因此,使用2DCT成像或选择性体积绘制可以检测到一小部分肝脏和心脏损伤病例。在选择性体积绘制确定损伤的所有情况下,放射科医生对2DCT图像的解释并没有确定损伤,尽管当选择性体积绘制的结果得到证实时,对2D CT图像的审查确实允许识别损伤。另外一个案例证明了选择性体积绘制用于估计穿刺伤口方向的有用性。结论尽管选择性体积绘制在检测心脏或肝脏损伤方面很少有效,但器官选择性体积绘制可以为检测损伤提供线索,而这些损伤在2DCT图像中往往被忽视。
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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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