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VIRTOPSY- A REVIEW. Dr. Arvind Kumar Senior Demonstrator Deptt. Of Forensic Medicine UCMS DELHI-110095. VIRTOPSY. Coined by Dr. Michael J Thali et al VIRTOPSY= virtual + Autopsy. Essentials of virtopsy. Multi-slice Computed Tomography (MSCT) Magnetic Resonance Imaging (MRI)

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VIRTOPSY- A REVIEW

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Virtopsy a review

VIRTOPSY- A REVIEW

  • Dr. Arvind Kumar

    Senior Demonstrator

    Deptt. Of Forensic Medicine

    UCMS

    DELHI-110095


Virtopsy

VIRTOPSY

  • Coined by Dr. Michael J Thali et al

  • VIRTOPSY= virtual + Autopsy


Essentials of virtopsy

Essentials of virtopsy

  • Multi-slice Computed Tomography (MSCT)

  • Magnetic Resonance Imaging (MRI)

  • Magnetic Resonance Spectroscopy

  • 3-D/ CAD Photogrammetry


Application of virtopsy

Application of Virtopsy

  • Atrium Mortis

  • Relevant forensic patho-morphologic findings

  • Forensic Vital reactions

  • Reconstruction of Injuries

  • Recapitulation and Visualization


Varying density values in a 3d msct reconstruction in a case of blunt trauma to the head

Varying density values in a 3D MSCT reconstruction in a case of blunt trauma to the head.


Virtopsy a review

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


Virtopsy a review

Coronal T2 weighted MR image showing wound track (arrows) through the brain in a suicidal gunshot case


Virtopsy a review

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).


Virtopsy a review

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)


Merits and demerits

Merits and Demerits

  • Merits

    * observer independent

    * reproducible

    * non invasive

    * illustrative visualization

    * forensic telemedicine consultation


Virtopsy a review

  • Demerits

    *MRI was unable to

    # image coronary artery lesions

    # differentiate thrombus from postmortem clot

    # differentiate pulmonary oedema from pneumonic exudates

    # detect perinatal cardiac malformations


Virtopsy a review

* lack of validation

* interpretative problems in advanced decomposition

* considerably high costs

* time consuming


Conclusion

Conclusion

  • The conventional method of Autopsy is still the gold standard

  • The use of imaging technology should be an autopsy adjunct rather than a replacement


Thank you

Thank you


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