Abstract
Purpose
The aim of our study was to evaluate the postmortem micro-CT anatomy of early fetal human fetal brains, either in situ or isolated.
Methods
We studied 12 ex vivo specimens, 9 whole human fetuses (9–18 GW), and 3 isolated samples (16–26 GW).
Specimens were fixed in formalin, then immersed in Lugol solution. Images were evaluated by two neuroradiologists. The depiction of CNS structures was defined based on the comparison between micro-CT images and a reference histologic anatomical Atlas of human brain development.
Results
Micro-CT provided informative high-resolution brain images in all cases, with the exception of one case (9 weeks) due to advanced maceration. All major CNS structures (i.e., brain hemispheres, layering, ventricles, germinal neuroepithelium, basal ganglia, corpus callosum, major cranial nerves, and structures of the head and neck) were recognizable.
Conclusions
Micro-CT imaging of the early fetal brain is feasible and provides high-quality images that correlate with the histological Atlas of the human brain, offering multiplanar and volumetric images that can be stored and shared for clinical, teaching, and research purposes.
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Abbreviations
- Micro-CT:
-
Micro-focus computed tomography
- GA:
-
Gestational age
- GZ:
-
Germinal neuroepithelium or zone
- GE:
-
Ganglionic eminence
- IZ:
-
Intermediate zone
- SP:
-
Subplate
- CP:
-
Cortical plate
- MZ:
-
Marginal zone
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Lombardi, S., Scola, E., Ippolito, D. et al. Micro-computed tomography: a new diagnostic tool in postmortem assessment of brain anatomy in small fetuses. Neuroradiology 61, 737–746 (2019). https://doi.org/10.1007/s00234-019-02168-2
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DOI: https://doi.org/10.1007/s00234-019-02168-2