{
  "ptid_time": "018_S_2133_2012-01-24",
  "img_path": "/data/qiuhui/data/adni/images/018_S_2133/2012-01-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,032 mm³, 70.3% above the reference mean. With a Z-score of 1.76 (96.1th percentile), this represents moderate enlargement; hippocampal volume measures 7,259 mm³, 5.5% below the reference mean. With a Z-score of -0.62 (26.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,215 mm³, 17.4% below the reference mean. With a Z-score of -1.35 (8.9th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,915 mm³, 1.6% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,892 mm³, 11.6% above the reference mean. With a Z-score of 1.03 (84.8th percentile), this represents mild enlargement. ",
  "text_data": "Age is 63.5 years. Gender is Female. Education: 18 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Cardiovascular; Respiratory; Musculoskeletal; Drug Abuse; Smoking; Major Surgical Procedures. MMSE: 26.0. MoCA: 21.0. Logical Memory: 7.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate ventricular enlargement (suggesting possible atrophy) and mild entorhinal cortex atrophy, both of which are associated with Alzheimer's pathology. The MMSE (26) is borderline normal, while the MoCA (21) suggests mild cognitive impairment, and the presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (likely prodromal Alzheimer's disease)  \n**Confidence:** **Medium** (imaging and cognitive scores align with MCI, but clinical correlation and longitudinal follow-up would strengthen certainty).",
  "timestamp": "2025-07-26T00:52:46.847122"
}