{
  "ptid_time": "128_S_4742_2019-08-29",
  "img_path": "/data/qiuhui/data/adni/images/128_S_4742/2019-08-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 59,737 mm³, 112.8% above the reference mean. With a Z-score of 2.58 (99.5th percentile), this represents significant enlargement; hippocampal volume measures 7,289 mm³, 2.5% above the reference mean. With a Z-score of 0.22 (58.9th percentile), this represents normal volume ; whole brain volume measures 1,067,280 mm³, 9.5% above the reference mean. With a Z-score of 1.20 (88.4th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,006 mm³, 9.1% above the reference mean. With a Z-score of 0.56 (71.1th percentile), this represents normal volume ; fusiform gyrus volume measures 16,742 mm³, 1.6% below the reference mean. With a Z-score of -0.15 (44.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,602 mm³, 12.7% above the reference mean. With a Z-score of 1.10 (86.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 77.6 years. Gender is Female. Education: 14 years. MMSE: 29.0. MoCA: 27.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant ventricular enlargement (Z-score 2.58), which is often associated with brain atrophy, but hippocampal, entorhinal cortex, and fusiform gyrus volumes are within normal ranges. Cognitive scores (MMSE 29, MoCA 27) are intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement is notable, but cognitive performance and other key structures remain normal)",
  "timestamp": "2025-07-26T14:05:07.574239"
}