{
  "ptid_time": "129_S_2332_2015-03-30",
  "img_path": "/data/qiuhui/data/adni/images/129_S_2332/2015-03-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,814 mm³, 54.3% below the reference mean. With a Z-score of -1.24 (10.7th percentile), this represents mild atrophy; hippocampal volume measures 6,979 mm³, 1.9% below the reference mean. With a Z-score of -0.17 (43.1th percentile), this represents normal volume ; whole brain volume measures 931,712 mm³, 4.4% below the reference mean. With a Z-score of -0.55 (29.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,421 mm³, 6.9% below the reference mean. With a Z-score of -0.42 (33.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,484 mm³, 2.8% above the reference mean. With a Z-score of 0.25 (59.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,784 mm³, 12.4% below the reference mean. With a Z-score of -1.08 (14.0th percentile), this represents mild atrophy. ",
  "text_data": "Age is 74.5 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.97 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild atrophy in the ventricular volume and middle temporal gyrus, but other key regions (hippocampus, entorhinal cortex, fusiform gyrus) are within normal ranges. Cognitive scores (MMSE 30, MoCA 29) are intact, and amyloid PET (AV45) is normal, with no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High** (No significant structural or biomarker evidence of neurodegeneration or cognitive impairment.)",
  "timestamp": "2025-07-26T14:12:28.932108"
}