{
  "ptid_time": "021_S_4254_2012-10-03",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4254/2012-10-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,920 mm³, 8.2% below the reference mean. With a Z-score of -0.22 (41.2th percentile), this represents normal volume ; hippocampal volume measures 5,700 mm³, 12.2% below the reference mean. With a Z-score of -0.98 (16.3th percentile), this represents normal volume ; whole brain volume measures 864,967 mm³, 6.8% below the reference mean. With a Z-score of -0.82 (20.7th percentile), this represents normal volume ; entorhinal cortex volume measures 2,382 mm³, 31.2% below the reference mean. With a Z-score of -1.68 (4.6th percentile), this represents moderate atrophy; fusiform gyrus volume measures 15,853 mm³, 1.6% below the reference mean. With a Z-score of -0.12 (45.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,370 mm³, 9.2% below the reference mean. With a Z-score of -0.82 (20.6th percentile), this represents normal volume . ",
  "text_data": "Age is 86.9 years. Gender is Female. Education: 12 years. MMSE: 27.0. MoCA: 24.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The entorhinal cortex shows moderate atrophy (Z-score -1.68, 4.6th percentile), which is a key early marker for Alzheimer's pathology. However, other brain volumes (hippocampus, whole brain) are within normal ranges, and cognitive scores (MMSE 27, MoCA 24) are borderline but not definitively impaired for this age.  \nDiagnosis: **MCI (Mild Cognitive Impairment)**  \nConfidence: **Medium** (Atrophy in the entorhinal cortex raises concern, but cognitive scores and other volumes are not strongly indicative of dementia.)",
  "timestamp": "2025-07-26T01:42:38.430592"
}