Whole body postmortem magnetic resonance angiography

Area of Science:

• Forensic Radiology
• Medical Imaging
• Vascular Imaging

Background:

• Computed tomography (CT) and magnetic resonance (MR) imaging are integral to forensic radiology.
• While CT angiography is established, postmortem MR angiography (PMMRA) remains under-explored.
• Forensic investigations benefit from advanced imaging modalities for detailed analysis.

Purpose of the Study:

• To evaluate the technical feasibility of postmortem MR angiography (PMMRA).
• To compare the image quality of PMMRA with postmortem CT angiography (PMCTA).
• To assess the utility of PMMRA in forensic radiology applications.

Main Methods:

• PMMRA was performed on four adult human cadavers.
• Technical quality was assessed comparatively between PMMRA and PMCTA across different body regions.
• Intra-aortic contrast volumes were quantified using segmentation software on both imaging types.

Main Results:

• PMMRA demonstrated technical image quality equal to PMCTA in 4 out of 4 cases for the head, heart, and chest.
• Comparable quality was achieved in 3 out of 4 cases for the abdomen and pelvis.
• A mean reduction of 46% in intra-aortic contrast volume was observed from PMCTA to PMMRA.

Conclusions:

• Postmortem MR angiography (PMMRA) is technically feasible for forensic radiology.
• PMMRA provides comparable image quality to PMCTA in multiple body regions.
• This technique merges MR's soft tissue detail with angiographic data, enhancing forensic analysis.