Does imaging technology overcome problems of conventional postmortem examination?

Hayakawa, Motozo; Yamamoto, Seiji; Motani, Hisako; Yajima, Daisuke; Sato, Yoshiaki; Iwase, Hirotaro

doi:10.1007/s00414-005-0038-x

Cited by 73 publications

(42 citation statements)

References 12 publications

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“…Imaging techniques have been widely introduced in forensic investigations, with post-mortem computed tomography (PMCT) and post-mortem magnetic resonance (PMMR) being the methods of choice [1][2][3][4][5][6]. One of the most important advantages of PMCT against PMMR examinations is the optimal visualization of skeletal structures with the possibility of 2D and 3D reconstructions that offer a panoramic view of isolated bones and of the entire skeleton.…”

Section: Introductionmentioning

confidence: 99%

Value of monoenergetic dual-energy CT (DECT) for artefact reduction from metallic orthopedic implants in post-mortem studies

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Value of monoenergetic dual-energy CT (DECT) for artefact reduction from metallic orthopedic implants in post-mortem studies

et al. 2015

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“…Post-mortem CT imaging is a useful tool for forensic diagnosis in general, and it is now being introduced into the field of forensic odontology. [2][3][4] If composite resins could be visualized accurately on reconstructed CT images in cases where it is difficult to detect them by external investigations alone, this would aid more accurate dental identification.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional visualization of composite fillings for dental identification using CT images

Sakuma

Saitoh²,

Makino³

et al. 2012

Dentomaxillofacial Radiology

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Objectives: This study aimed to discriminate between enamel and composite resins by differences in Hounsfield units shown on 16 section multidetector CT (MDCT) images taken of unidentified bodies. Methods: First, we determined the Hounsfield units of composite resins in 15 extracted human teeth. We then filled a single cavity prepared in each of the teeth with one of five different types of composite resins, and scanned the teeth using our routine post-mortem CT protocol for the head and neck. Obtained data were transferred to a radiological workstation and reconstructed. Furthermore, post-mortem CT images of the head of three unidentified bodies were reconstructed in the same manner. Results: Four types of composite resins containing radio-opaque fillers showed a constant value of 4000 HU, and one radiolucent composite resin showed values in the range of 660-800 HU in the extracted teeth. Pixels at 4000 HU indicated that the composite resins were selected and visualized as three-dimensional colour images. Composite resins could be visualized on reconstructed images of the three unidentified bodies, and the sites visualized matched those noted on the forensic dental charts. Conclusions: Discriminating enamel and composite resins containing radio-opaque materials was difficult because of their similar Hounsfield unit values. However, we did succeed in visualizing the composite resins despite limitations of the CT scale. CT reconstructed images can contribute to dental identification, particularly in cases where it is difficult to detect composite resins on external investigation, and these images can be prepared during routine dental identification work.

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“…While the development in legal medicine includes more and more imaging techniques [4][5][6] in clinical medicine, these techniques are used routinely and there is a trend toward microinvasive treatment, leading to new possibilities and new risks. One of these new methods is the implantation of exhale stents in the bronchial walls to treat emphysema.…”

Section: Discussionmentioning

confidence: 99%

Perforation of the pulmonary artery by a bronchial wall stent

2006

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Implantation of stents into the bronchial walls is a newly developed method to treat lung emphysema, which is now being tested clinically. During this procedure, a bronchoscope carrying a Doppler ultrasonography head is placed into a segmental bronchus and the blood vessels running in parallel to the bronchus are localized. Once a safe location without blood vessels is found, the bronchial wall is perforated and a stent is placed within the wall to improve the expiratory volume of these "bypasses" to the adjacent lung parenchyma. We observed a fatal complication with this method in a 60-year-old man. The bronchial wall and the pulmonary artery were perforated by one of the stents inducing massive bleeding, which could not be stopped. The patient died due to aspiration of blood in combination with massive loss of blood. The general risk to perforate the pulmonary artery during this procedure cannot be estimated from this single observation but should be considered regarding the legal and clinical aspects.

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Does imaging technology overcome problems of conventional postmortem examination?

Cited by 73 publications

References 12 publications

Value of monoenergetic dual-energy CT (DECT) for artefact reduction from metallic orthopedic implants in post-mortem studies

Value of monoenergetic dual-energy CT (DECT) for artefact reduction from metallic orthopedic implants in post-mortem studies

Three-dimensional visualization of composite fillings for dental identification using CT images

Perforation of the pulmonary artery by a bronchial wall stent

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