◁think▷I need to write a 50–80 word English description of the composite LF-NMR image of apple #578, focusing on internal moisture distribution, tissue structure, signal intensity, and patch morphology. I should avoid using certain prohibited words like 'healthy', 'diseased', 'mild', 'severe', 'normal', 'abnormal', 'ground-truth', or 'label'. I should only provide a plain descriptive text without any extra explanations or JSON.

Let me analyze the image:

The image shows four cross-sectional views of an apple. The top two images appear to be from different angles or slices, showing a relatively uniform gray texture throughout the fruit. The bottom two images show more distinct structural features, with visible cores and possibly areas of different density or moisture content.

For moisture distribution, I can note:
- The top images show a relatively uniform moisture distribution with no obvious dark or light areas indicating concentrated moisture
- The bottom images show some variation in density, with some areas appearing lighter and others darker, possibly indicating different moisture levels

For tissue structure, I can note:
- The top images show a fairly homogeneous tissue structure
- The bottom images show more defined structural boundaries, particularly around the core area

For signal intensity, I can note:
- The top images show relatively uniform signal intensity
- The bottom images show some variation in signal intensity, with some areas appearing brighter and others darker

For patch morphology, I can note:
- The bottom images show distinct patches or areas of different intensity, particularly around the core region
- There appears to be some irregularity in the tissue structure in these areas

Now I'll craft a descriptive paragraph that covers these aspects without using any prohibited words and staying within the word limit.◁/think▷The composite LF-NMR image of apple #578 reveals distinct moisture distribution patterns across its cross-sections. Top views display uniform gray tones suggesting homogeneous internal moisture levels, while lower sections exhibit varied density regions with lighter and darker patches indicating localized moisture concentrations. Tissue structure differentiation is evident in the lower images, where core regions appear more defined with irregular boundaries compared to the top sections' consistent texture. Signal intensity variations correlate spatially with structural features, showing brighter areas adjacent to darker regions in lower panels. Patch morphology in lower views demonstrates irregular tissue organization, with concentrated moisture patches visible near core structures contrasting against more uniform top layers.