virtopsy- a review dr. arvind kumar senior demonstrator deptt. of forensic medicine ucms...
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VIRTOPSY- A VIRTOPSY- A REVIEWREVIEW
Dr. Arvind KumarDr. Arvind Kumar
Senior Demonstrator
Deptt. Of Forensic Medicine
UCMS
DELHI-110095
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VIRTOPSYVIRTOPSY
Coined by Dr. Michael J Thali et al
VIRTOPSY= virtual + Autopsy
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Essentials of virtopsyEssentials of virtopsy
Multi-slice Computed Tomography (MSCT)
Magnetic Resonance Imaging (MRI)
Magnetic Resonance Spectroscopy
3-D/ CAD Photogrammetry
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Application of VirtopsyApplication of Virtopsy
Atrium Mortis
Relevant forensic patho-morphologic findings
Forensic Vital reactions
Reconstruction of Injuries
Recapitulation and Visualization
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Varying density values in a 3D MSCT reconstruction in a case of blunt trauma to the head.
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3D reconstruction of a skull fracture system from the MSCT data in a case of a motor vehicle accident with the victim
having been run over by a car
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Coronal T2 weighted MR image showing wound track
(arrows) through the brain in a suicidal gunshot case
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Gadolinium enhanced MRI of patient with lateral wall myocardial infarction. Four chamber view of heart with
bright signal in lateral wall of left ventricle (LV).
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Figure showing comparison of spectrum from a human brain with a PMI of about 520 hours (a) and one with a PMI of 57 hours (b)
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Merits and DemeritsMerits and DemeritsMerits
* observer independent* reproducible* non invasive* illustrative visualization* forensic telemedicine
consultation
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Demerits* MRI was unable to
# image coronary artery lesions # differentiate thrombus from postmortem clot# differentiate pulmonary oedema from pneumonic exudates# detect perinatal cardiac malformations
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* lack of validation* interpretative problems in
advanced decomposition
* considerably high costs* time consuming
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ConclusionConclusion
The conventional method of Autopsy is still the gold standard
The use of imaging technology should be an autopsy adjunct rather than a replacement
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Thank Thank youyou