{
  "ptid_time": "123_S_0072_2012-01-10",
  "img_path": "/data/qiuhui/data/adni/images/123_S_0072/2012-01-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,504 mm³, 13.0% below the reference mean. With a Z-score of -0.31 (37.8th percentile), this represents normal volume ; hippocampal volume measures 8,088 mm³, 7.0% above the reference mean. With a Z-score of 0.68 (75.3th percentile), this represents normal volume ; whole brain volume measures 1,024,730 mm³, 5.1% below the reference mean. With a Z-score of -0.66 (25.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,331 mm³, 5.6% above the reference mean. With a Z-score of 0.38 (64.8th percentile), this represents normal volume ; fusiform gyrus volume measures 17,823 mm³, 5.4% below the reference mean. With a Z-score of -0.46 (32.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,229 mm³, 0.5% below the reference mean. With a Z-score of -0.05 (48.2th percentile), this represents normal volume . ",
  "text_data": "Age is 76.6 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 28.0. MoCA: 22.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 28 is within the normal range, but the MoCA score of 22 suggests mild cognitive impairment (MCI). The absence of APOE4 reduces genetic risk for Alzheimer’s.  \n\n**Diagnosis:** **MCI** (due to borderline MoCA score despite normal imaging)  \n**Confidence:** **Medium** (cognitive testing suggests impairment, but structural imaging is unremarkable)",
  "timestamp": "2025-07-26T12:22:01.081862"
}