{
  "ptid_time": "129_S_2332_2013-03-18",
  "img_path": "/data/qiuhui/data/adni/images/129_S_2332/2013-03-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,415 mm³, 55.8% below the reference mean. With a Z-score of -1.28 (10.1th percentile), this represents mild atrophy; hippocampal volume measures 7,400 mm³, 4.0% above the reference mean. With a Z-score of 0.37 (64.4th percentile), this represents normal volume ; whole brain volume measures 938,080 mm³, 3.8% below the reference mean. With a Z-score of -0.47 (31.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,241 mm³, 11.8% below the reference mean. With a Z-score of -0.72 (23.5th percentile), this represents normal volume ; fusiform gyrus volume measures 18,451 mm³, 8.5% above the reference mean. With a Z-score of 0.77 (77.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,263 mm³, 9.9% below the reference mean. With a Z-score of -0.86 (19.4th percentile), this represents normal volume . ",
  "text_data": "Age is 72.5 years. Gender is Female. Education: 16 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular enlargement (mild atrophy) but otherwise normal volumes in key regions like the hippocampus, entorhinal cortex, and temporal structures. Cognitive scores (MMSE 29, MoCA 28) are intact, and amyloid PET (AV45) is normal, ruling out significant Alzheimer's pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:12:13.940587"
}