{
  "ptid_time": "099_S_0291_2008-03-14",
  "img_path": "/data/qiuhui/data/adni/images/099_S_0291/2008-03-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 56,073 mm³, 19.3% above the reference mean. With a Z-score of 0.56 (71.2th percentile), this represents normal volume ; hippocampal volume measures 7,212 mm³, 3.5% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume ; whole brain volume measures 944,453 mm³, 8.2% below the reference mean. With a Z-score of -1.08 (14.0th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,609 mm³, 9.1% below the reference mean. With a Z-score of -0.59 (27.6th percentile), this represents normal volume ; fusiform gyrus volume measures 16,758 mm³, 7.2% below the reference mean. With a Z-score of -0.63 (26.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,196 mm³, 5.1% above the reference mean. With a Z-score of 0.46 (67.6th percentile), this represents normal volume . ",
  "text_data": "Age is 81.4 years. Gender is Male. Education: 16 years. MMSE: 30.0. Logical Memory: 8.0. Laboratory findings: WBC: 9.47 (significant elevated); Neutrophils: 7.08 (significant elevated); Alkaline Phosphatase: 160.00 (profound elevated). APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild whole-brain atrophy (Z-score -1.08, 14th percentile), but all other regional volumes (hippocampus, entorhinal cortex, fusiform gyrus, etc.) are within normal ranges. The MMSE score of 30/30 indicates no cognitive impairment, and the APOE4 status (heterozygous) is a moderate risk factor but not diagnostic.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High** (No significant atrophy in Alzheimer’s-vulnerable regions and intact cognition despite mild global atrophy, which could be age-related.)",
  "timestamp": "2025-07-26T10:54:14.259166"
}