{
  "ptid_time": "006_S_0731_2012-09-25",
  "img_path": "/data/qiuhui/data/adni/images/006_S_0731/2012-09-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,812 mm³, 46.0% below the reference mean. With a Z-score of -1.10 (13.5th percentile), this represents mild atrophy; hippocampal volume measures 7,860 mm³, 4.0% above the reference mean. With a Z-score of 0.39 (65.1th percentile), this represents normal volume ; whole brain volume measures 1,029,210 mm³, 4.6% below the reference mean. With a Z-score of -0.60 (27.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,188 mm³, 2.1% above the reference mean. With a Z-score of 0.14 (55.7th percentile), this represents normal volume ; fusiform gyrus volume measures 18,736 mm³, 0.5% below the reference mean. With a Z-score of -0.05 (48.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,359 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.3th percentile), this represents normal volume . ",
  "text_data": "Age is 77.5 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 29.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 29, MoCA 29) are intact, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T21:32:30.899083"
}