Diagnostic efficacy of hepatic computed tomography in the detection of body iron overload

Area of Science:

• Radiology
• Hepatology
• Medical Diagnostics

Background:

• Liver biopsy is the gold standard for diagnosing body iron overload but is invasive.
• Noninvasive methods are needed to assess hepatic iron levels.
• Computed tomography (CT) density may offer an alternative diagnostic tool.

Purpose of the Study:

• To evaluate hepatic computed tomography density as an alternative to liver biopsy for diagnosing body iron overload.
• To correlate CT density with established markers of iron overload.

Main Methods:

• Hepatic computed tomography density was measured using a single CT slice in healthy controls, patients with idiopathic hemochromatosis, and patients with liver disease.
• Measurements were compared with liver biopsy results and serum ferritin levels.
• Statistical analysis included chi-squared tests and correlation coefficients.

Main Results:

• Elevated hepatic computed tomography density was observed in untreated patients with idiopathic hemochromatosis (p = 0.01) and in patients with excess hepatic iron confirmed by biopsy (p < 0.001).
• Hepatic computed tomography density showed a significant positive correlation with serum ferritin (r = 0.72, p = 0.01).
• A normal hepatic computed tomography density did not exclude the possibility of iron overload.

Conclusions:

• Hepatic computed tomography density is a valuable noninvasive tool for detecting excess hepatocellular iron, particularly when combined with elevated serum ferritin.
• CT density can serve as a reliable alternative to liver biopsy in patients with unexplained elevated serum ferritin.
• Further investigation may refine CT density thresholds for diagnosing various degrees of iron overload.