{
  "ptid_time": "114_S_1106_2009-12-28",
  "img_path": "/data/qiuhui/data/adni/images/114_S_1106/2009-12-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,363 mm³, 15.3% above the reference mean. With a Z-score of 0.35 (63.7th percentile), this represents normal volume ; hippocampal volume measures 6,410 mm³, 9.9% below the reference mean. With a Z-score of -0.91 (18.2th percentile), this represents normal volume ; whole brain volume measures 955,315 mm³, 2.0% below the reference mean. With a Z-score of -0.25 (40.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,048 mm³, 17.0% below the reference mean. With a Z-score of -1.04 (14.8th percentile), this represents mild atrophy; fusiform gyrus volume measures 14,946 mm³, 12.1% below the reference mean. With a Z-score of -1.11 (13.4th percentile), this represents mild atrophy; middle temporal gyrus volume measures 16,238 mm³, 15.3% below the reference mean. With a Z-score of -1.33 (9.2th percentile), this represents mild atrophy. ",
  "text_data": "Age is 77.0 years. Gender is Female. Education: 18 years. MMSE: 29.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild atrophy in the entorhinal cortex, fusiform gyrus, and middle temporal gyrus, which are regions commonly affected in early Alzheimer's disease. However, hippocampal volume is within the normal range, and the MMSE score of 29 is intact, suggesting no significant cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild atrophy in AD-vulnerable regions but preserved cognition and normal hippocampal volume)",
  "timestamp": "2025-07-26T11:44:28.149263"
}