{
  "ptid_time": "116_S_4483_2012-01-25",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4483/2012-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,858 mm³, 24.7% above the reference mean. With a Z-score of 0.62 (73.2th percentile), this represents normal volume ; hippocampal volume measures 7,892 mm³, 2.7% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume ; whole brain volume measures 1,005,730 mm³, 2.3% below the reference mean. With a Z-score of -0.28 (38.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,483 mm³, 10.5% below the reference mean. With a Z-score of -0.82 (20.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,249 mm³, 5.3% below the reference mean. With a Z-score of -0.59 (27.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,724 mm³, 8.8% below the reference mean. With a Z-score of -0.78 (21.8th percentile), this represents normal volume . ",
  "text_data": "Age is 69.5 years. Gender is Female. Education: 15 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Gastrointestinal; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 30.0. MoCA: 25.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.95 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are within normal ranges, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. The MMSE score of 30 is normal, but the MoCA score of 25 suggests mild cognitive inefficiency, though not severe enough for dementia. The absence of APOE4 and only mild AV45 (amyloid) reduction further reduces the likelihood of Alzheimer's pathology.  \n\n**Diagnosis:** **MCI (Mild Cognitive Impairment)**  \n**Confidence:** **Medium** (MoCA suggests subtle cognitive decline, but structural imaging and biomarkers do not strongly support dementia or neurodegeneration).",
  "timestamp": "2025-07-26T12:11:58.761443"
}