{
  "ptid_time": "135_S_4723_2020-06-30",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4723/2020-06-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,719 mm³, 51.1% below the reference mean. With a Z-score of -1.17 (12.1th percentile), this represents mild atrophy; hippocampal volume measures 7,274 mm³, 2.2% above the reference mean. With a Z-score of 0.21 (58.1th percentile), this represents normal volume ; whole brain volume measures 1,005,040 mm³, 3.1% above the reference mean. With a Z-score of 0.39 (65.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,364 mm³, 18.8% above the reference mean. With a Z-score of 1.15 (87.6th percentile), this represents mild enlargement; fusiform gyrus volume measures 16,356 mm³, 3.9% below the reference mean. With a Z-score of -0.35 (36.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,572 mm³, 2.1% above the reference mean. With a Z-score of 0.18 (57.2th percentile), this represents normal volume . ",
  "text_data": "Age is 77.4 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular atrophy but otherwise normal or even slightly enlarged volumes in key regions (hippocampus, entorhinal cortex). Cognitive scores (MMSE 30, MoCA 28) are within normal ranges, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:46:15.793569"
}