◁think▷I need to write a 50–80 word English description of the composite LF-NMR image of apple #604, focusing on internal moisture distribution, tissue structure, signal intensity, and patch morphology. I should avoid certain prohibited words and not use JSON, Chinese, or extra explanations.

Let me analyze the image and think about what I need to describe:

The image shows what appears to be cross-sectional slices of an apple. There are four views shown, which likely represent different orientations or regions of the apple.

For internal moisture distribution, I should mention:
- Areas of higher or lower moisture
- Variability in moisture content
- Possible regions of concentration or depletion

For tissue structure, I should discuss:
- The overall texture and composition
- Different tissue layers or regions
- How the tissue appears in different parts of the apple

For signal intensity, I need to describe:
- Variations in brightness/darkness in the image
- Which areas have stronger/weaker signals
- How this relates to the LF-NMR technique

For patch morphology, I should note:
- Presence of distinct patches or regions
- Their shape, size, and distribution
- How they appear in different views

Now I'll craft a description that covers these aspects without using prohibited terms like "healthy," "diseased," "mild," "severe," "normal," "abnormal," "ground-truth," or "label." I'll also avoid JSON and Chinese, and keep it to 50–80 words.

I'll focus on objective observations about the image content and what they might indicate about the apple's internal state based on LF-NMR imaging principles.◁/think▷The composite LF-NMR image of apple #604 reveals distinct patterns in internal moisture distribution. Signal intensity varies across regions, with darker areas indicating higher moisture concentration and lighter regions showing lower moisture content. Tissue structure appears heterogeneous, with visible differentiation between core and peripheral zones. Patch morphology is irregular, featuring irregularly shaped regions with varying signal characteristics. The top-left view shows a relatively uniform texture with moderate moisture levels, while the top-right view displays a central core with distinct moisture gradient. The bottom-left view exhibits a more heterogeneous distribution with scattered patches, and the bottom-right view demonstrates the most pronounced moisture variability. These patterns suggest complex internal dynamics within the apple's structure as visualized through LF-NMR imaging.