Human fetal whole-body postmortem microfocus computed tomographic imaging.

Area of Science:

• Medical Imaging
• Pathology
• Prenatal Medicine

Background:

• Perinatal autopsy is the standard for investigating fetal death but involves invasive fetal dissection.
• There is a need for less invasive methods to determine the cause of early pregnancy loss for bereaved parents.
• Human fetal microfocus computed tomography (micro-CT) presents a minimally invasive imaging alternative.

Purpose of the Study:

• To describe a detailed protocol for imaging human fetuses using micro-CT.
• To outline the stages involved in preparing, imaging, and postprocessing fetal samples for analysis.

Main Methods:

• Fetus preparation involves contrast staining with potassium triiodide (3-19 days).
• Imaging setup and high-definition scanning take approximately 3 hours and 40 minutes.
• Post-imaging processing includes stain removal, artifact recognition, and data transfer (3 days).

Main Results:

• The micro-CT protocol yields high-resolution isotropic datasets.
• This enables radio-pathological interpretations and facilitates long-term digital archiving.
• The procedure is feasible with appropriate training in micro-CT techniques and postmortem tissue handling.

Conclusions:

• Human fetal micro-CT is a viable, less invasive imaging modality for investigating fetal death.
• The described protocol provides a standardized approach for acquiring detailed fetal imaging data.
• Micro-CT facilitates accurate cause-of-death determination and supports digital data management.