{
  "ptid_time": "024_S_2239_2011-12-06",
  "img_path": "/data/qiuhui/data/adni/images/024_S_2239/2011-12-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,739 mm³, 47.5% below the reference mean. With a Z-score of -1.09 (13.8th percentile), this represents mild atrophy; hippocampal volume measures 8,042 mm³, 13.0% above the reference mean. With a Z-score of 1.20 (88.4th percentile), this represents mild enlargement; whole brain volume measures 1,027,620 mm³, 5.4% above the reference mean. With a Z-score of 0.68 (75.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,522 mm³, 4.1% below the reference mean. With a Z-score of -0.25 (40.0th percentile), this represents normal volume ; fusiform gyrus volume measures 18,715 mm³, 10.0% above the reference mean. With a Z-score of 0.91 (81.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,425 mm³, 17.0% above the reference mean. With a Z-score of 1.47 (93.0th percentile), this represents mild enlargement. ",
  "text_data": "Age is 74.5 years. Gender is Female. Education: 15 years. Handedness: Left. Race: White. Medical history: Neurologic; Dermatologic-Connective Tissue; Musculoskeletal; Major Surgical Procedures. MMSE: 27.0. MoCA: 23.0. Logical Memory: 15.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is mildly enlarged (13% above mean, Z-score 1.20), while ventricular volume shows mild atrophy (47.5% below mean, Z-score -1.09). Cognitive scores (MMSE 27, MoCA 23) are borderline for MCI, but structural findings do not strongly support neurodegeneration.  \n**Diagnosis:** MCI (Mild Cognitive Impairment)  \n**Confidence:** Medium  \n\n*(Note: The hippocampal enlargement is atypical for Alzheimer’s, and the MoCA score is slightly below the typical MCI cutoff of 26. APOE4 carrier status increases AD risk but isn’t diagnostic. Further clinical correlation is needed.)*",
  "timestamp": "2025-07-26T03:16:25.419856"
}