◁think▷I need to write a 50–80 word English description of the composite LF-NMR image of apple #540, focusing on internal moisture distribution, tissue structure, signal intensity, and patch morphology. I should avoid using certain restricted words like 'healthy', 'diseased', 'mild', 'severe', 'normal', 'abnormal', 'ground-truth', or 'label'.

Let me analyze the image:
- The image shows cross-sectional views of apples
- There appear to be four different views or conditions
- The apples show variations in texture and structure
- Some areas appear smoother while others have more irregular patterns
- The coloration varies, suggesting differences in moisture content or tissue density

For my description, I'll focus on:
1. Internal moisture distribution: How water is distributed within the apple tissue
2. Tissue structure: The arrangement and density of cells and tissues
3. Signal intensity: How the LF-NMR imaging technology represents different properties
4. Patch morphology: The shape, size, and pattern of variations in the apple

I'll craft a concise description without using the restricted words, and without any JSON, Chinese, or extra explanations.◁/think▷The composite LF-NMR image of apple #540 reveals distinct variations in internal moisture distribution, with some regions showing concentrated moisture content and others appearing drier. Tissue structure exhibits irregular patterns, with cellular arrangements varying across the cross-sections. Signal intensity differences suggest contrasting material properties, likely correlating with moisture levels. Patch morphology displays irregular shapes and sizes, with some areas showing larger, more defined patches while others exhibit smaller, scattered variations. The imaging highlights structural heterogeneity within the apple's anatomy.