多级标题文章格式示例：（以“low attenuation lesion”为例）
Εγώ. Εισαγωγή
ΕΝΑ. Definition of low attenuation lesion
σι. Importance of studying low attenuation lesions
II. Causes of low attenuation lesions
ΕΝΑ. Fluid-filled lesions
1. Cystic lesions
2. Serous fluid-filled lesions
σι. Fatty lesions
ντο. Necrotic lesions
III. Imaging modalities for detecting low attenuation lesions
ΕΝΑ. Computed tomography (CT)
1. Advantages of CT in detecting low attenuation lesions
2. Limitations of CT in diagnosing low attenuation lesions
σι. Magnetic resonance imaging (MRI)
1. Benefits of MRI in identifying low attenuation lesions
2. Drawbacks of MRI in characterizing low attenuation lesions
IV. Clinical significance of low attenuation lesions
ΕΝΑ. Diagnosis and differential diagnosis of low attenuation lesions
σι. Potential complications associated with low attenuation lesions
ντο. Treatment options for low attenuation lesions
V. Case studies and examples of low attenuation lesions
ΕΝΑ. Case 1: Low attenuation lesion in the liver
σι. Case 2: Low attenuation lesion in the brain
ντο. Case 3: Low attenuation lesion in the kidney
VI. συμπέρασμα
ΕΝΑ. Recap of key points discussed in the article
σι. Importance of prompt diagnosis and proper management of low attenuation lesions
Note: This is just a sample outline for an article on low attenuation lesions. The actual content and specific headings may vary depending on the intended focus and depth of the article.
