{
  "ptid_time": "022_S_4320_2015-12-08",
  "img_path": "/data/qiuhui/data/adni/images/022_S_4320/2015-12-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,101 mm³, 50.0% above the reference mean. With a Z-score of 1.14 (87.4th percentile), this represents mild enlargement; hippocampal volume measures 8,183 mm³, 15.0% above the reference mean. With a Z-score of 1.38 (91.6th percentile), this represents mild enlargement; whole brain volume measures 986,599 mm³, 1.2% above the reference mean. With a Z-score of 0.15 (56.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,046 mm³, 10.2% above the reference mean. With a Z-score of 0.62 (73.4th percentile), this represents normal volume ; fusiform gyrus volume measures 14,578 mm³, 14.3% below the reference mean. With a Z-score of -1.30 (9.6th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,457 mm³, 6.7% above the reference mean. With a Z-score of 0.58 (72.0th percentile), this represents normal volume . ",
  "text_data": "Age is 74.7 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 20.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.21 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild atrophy in the fusiform gyrus but otherwise normal or above-average volumes in other regions, including the hippocampus and entorhinal cortex. Cognitive scores (MMSE 30, MoCA 30) are intact, and amyloid PET (AV45) is normal, with no APOE4 risk alleles.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:20:31.447747"
}