Autopsy correlations of computerized tomography: experience with 6,000 CT scans

Area of Science:

• Neuroradiology
• Neuropathology
• Medical Imaging

Background:

• Accurate identification of brain pathology is crucial for patient diagnosis and treatment.
• Computed tomography (CT) is a widely used imaging modality for evaluating the brain.
• Correlation of in vivo imaging with post-mortem examination provides a gold standard for accuracy assessment.

Purpose of the Study:

• To correlate CT scan findings with autopsy results in a series of 79 cases.
• To evaluate the accuracy of CT in identifying various intracranial pathologies.
• To assess the characteristic CT appearances of specific brain conditions.

Main Methods:

• Retrospective analysis of 79 cases with both CT scans and autopsy correlations.
• Detailed review of CT scan images for normal variations and pathological findings.
• Comparison of CT findings with histopathological autopsy results.

Main Results:

• Excellent correlation observed in normal brains, with larger lateral ventricles noted during life.
• Distinct CT patterns differentiated obstructive from non-obstructive hydrocephalus.
• Infarctions appeared as decreased parenchymal densities, while hemorrhages showed characteristic high density.
• Tumors presented as masses distorting normal brain structures.
• CT demonstrated an overall accuracy of 86.2% in identifying brain pathology, with 11 false-negative cases noted for specific conditions like brainstem infarction/hemorrhage and small metastases.

Conclusions:

• CT scanning is a highly accurate method for diagnosing a wide range of brain pathologies.
• Specific CT features allow differentiation between various conditions like infarction, hemorrhage, and hydrocephalus.
• While generally accurate, CT may have limitations in detecting certain subtle findings such as small metastases or brainstem lesions.