{
  "ptid_time": "141_S_1231_2007-02-18",
  "img_path": "/data/qiuhui/data/adni/images/141_S_1231/2007-02-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 60,876 mm³, 64.7% above the reference mean. With a Z-score of 1.75 (96.0th percentile), this represents moderate enlargement; hippocampal volume measures 5,635 mm³, 13.2% below the reference mean. With a Z-score of -1.06 (14.4th percentile), this represents mild atrophy; whole brain volume measures 888,776 mm³, 4.2% below the reference mean. With a Z-score of -0.51 (30.5th percentile), this represents normal volume ; entorhinal cortex volume measures 2,946 mm³, 14.9% below the reference mean. With a Z-score of -0.81 (21.0th percentile), this represents normal volume ; fusiform gyrus volume measures 13,198 mm³, 18.1% below the reference mean. With a Z-score of -1.36 (8.7th percentile), this represents mild atrophy; middle temporal gyrus volume measures 16,720 mm³, 7.3% below the reference mean. With a Z-score of -0.65 (25.9th percentile), this represents normal volume . ",
  "text_data": "Age is 83.5 years. Gender is Female. Education: 12 years. Handedness: Left. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Gastrointestinal; Major Surgical Procedures. MMSE: 26.0. Logical Memory: 3.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate ventricular enlargement and mild hippocampal atrophy, which are common in neurodegenerative conditions. The MMSE score of 26 is borderline (normal range is typically 24-30 for this age), but the presence of APOE4 and structural changes suggests early cognitive decline.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to borderline MMSE and mild atrophy, but clear structural changes and APOE4 risk factor)",
  "timestamp": "2025-07-26T16:56:21.326390"
}