{
  "ptid_time": "114_S_1106_2007-12-18",
  "img_path": "/data/qiuhui/data/adni/images/114_S_1106/2007-12-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,752 mm³, 6.0% above the reference mean. With a Z-score of 0.14 (55.5th percentile), this represents normal volume ; hippocampal volume measures 6,597 mm³, 7.3% below the reference mean. With a Z-score of -0.67 (25.2th percentile), this represents normal volume ; whole brain volume measures 936,448 mm³, 3.9% below the reference mean. With a Z-score of -0.49 (31.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,571 mm³, 2.8% below the reference mean. With a Z-score of -0.17 (43.2th percentile), this represents normal volume ; fusiform gyrus volume measures 14,846 mm³, 12.7% below the reference mean. With a Z-score of -1.16 (12.3th percentile), this represents mild atrophy; middle temporal gyrus volume measures 16,644 mm³, 13.2% below the reference mean. With a Z-score of -1.14 (12.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 75.0 years. Gender is Female. Education: 18 years. MMSE: 29.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild atrophy in the fusiform gyrus and middle temporal gyrus, but all other regions (hippocampus, whole brain, entorhinal cortex) are within normal ranges. The MMSE score of 29 is intact, and there is no APOE4 genetic risk factor. Mild atrophy in these regions could be age-related or early neurodegenerative changes, but cognitive performance remains normal.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild atrophy in some regions but preserved cognition and no other strong risk factors)",
  "timestamp": "2025-07-26T11:44:02.264544"
}