A New Practical Intracerebral Hematoma Volume Calculation Method and Comparison to simple ABC/2

Area of Science:

• Neurosurgery
• Radiology
• Medical Imaging Analysis

Background:

• Accurate hematoma volume calculation is crucial for managing intracranial hemorrhages.
• The simple ABC/2 formula is widely used but may lack precision for complex hematomas.
• Developing more effective volumetric methods is essential for clinical decision-making.

Purpose of the Study:

• To develop and validate a novel, practical formula for calculating hematoma volume.
• To compare the accuracy of the new formula against the standard ABC/2 method and planimetry.
• To assess the formula's utility for both subdural and parenchymal hematomas.

Main Methods:

• Retrospective review of 157 patient CT scans for stroke-related hemorrhages.
• Hematoma volumes were measured using the proposed formula, the sABC/2 formula, and planimetry (gold standard).
• Statistical analysis, including concordance and root mean square error (RMSE), was performed for comparison.

Main Results:

• The proposed method demonstrated high concordance with planimetry (0.93) compared to sABC/2 (0.92).
• The new formula significantly reduced the root mean square error (RMSE) for both subdural (20.62 ml vs. 32.17 ml) and parenchymal hematomas (20.46 ml vs. 25.01 ml).
• The proposed method showed superior performance in calculating subdural hematoma volumes.

Conclusions:

• The novel formula provides a practical and accurate method for calculating brain hematoma volumes.
• This new formula is as clinically applicable as the sABC/2 method.
• The formula's bedside applicability supports its use in routine clinical practice for managing hemorrhages.