Computed tomography: contrast media within subdural hematomas. A preliminary report

Area of Science:

• Radiology
• Neurology
• Medical Imaging

Background:

• Subdural hematomas (SDHs) are a common finding in neuroimaging.
• Initial computed tomographic (CT) scans may not always detect subtle or early-stage SDHs.
• Contrast-enhanced CT is frequently used to improve lesion detection.

Purpose of the Study:

• To evaluate the utility of delayed contrast-enhanced computed tomographic scans in detecting subdural hematomas.
• To determine if delayed imaging improves visualization of SDHs missed on immediate scans.

Main Methods:

• Retrospective review of computed tomographic scans in patients with suspected subdural hematomas.
• Comparison of initial and delayed post-contrast CT scans.
• Analysis of cases where subdural hematomas were identified on delayed scans but not initial scans.

Main Results:

• Delayed computed tomographic scans demonstrated subdural hematomas in cases where initial scans were negative or equivocal.
• Contrast media collection within the subdural space was evident on delayed scans, aiding in diagnosis.
• The diagnostic yield of CT for subdural hematomas was improved by incorporating delayed imaging protocols.

Conclusions:

• Delayed contrast-enhanced CT is a valuable tool for diagnosing subdural hematomas, particularly when initial scans are inconclusive.
• This technique enhances the detection of subdural hematomas by visualizing accumulated contrast media.
• Incorporating delayed imaging into CT protocols can improve the sensitivity for detecting subdural hematomas.