CT patterns of splenic infarction: a clinical and experimental study

Area of Science:

• Radiology
• Medical Imaging
• Pathology

Background:

• Splenic infarction diagnosis relies on computed tomographic (CT) findings.
• Classic CT descriptions characterize splenic infarcts as peripheral, wedge-shaped, and low-density.

Purpose of the Study:

• To investigate the varied appearances of splenic infarcts using CT.
• To evaluate the efficacy of contrast enhancement in diagnosing splenic infarction.
• To assess CT's ability to depict the evolving stages of splenic infarction in an experimental model.

Main Methods:

• A clinical study involving 12 patients with splenic infarction.
• An experimental study using a canine model of splenic infarction.
• Comparison of precontrast and postcontrast CT scans for infarct detection.
• Evaluation of a novel liposome-encapsulated diatrizoate contrast agent.

Main Results:

• Three distinct CT patterns of splenic infarction were identified: classic peripheral wedge-shaped, multiple heterogeneous lesions, and massive hypodense lesions.
• Contrast-enhanced CT significantly improved infarct visualization compared to unenhanced scans.
• The canine model demonstrated CT's capability to visualize infarct progression through various pathological stages.
• Liposome-encapsulated diatrizoate showed enhanced and sustained contrast differences between normal and infarcted splenic tissue.

Conclusions:

• Splenic infarction exhibits diverse CT appearances not limited to the classic description.
• Contrast-enhanced CT is crucial for accurate diagnosis and improved visualization of splenic infarcts.
• CT imaging effectively tracks the dynamic evolution of splenic infarction, aiding in understanding its pathogenesis.