{
  "ptid_time": "009_S_2208_2012-01-06",
  "img_path": "/data/qiuhui/data/adni/images/009_S_2208/2012-01-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,430 mm³, 12.0% below the reference mean. With a Z-score of -0.28 (38.8th percentile), this represents normal volume ; hippocampal volume measures 8,676 mm³, 8.1% above the reference mean. With a Z-score of 0.81 (79.0th percentile), this represents normal volume ; whole brain volume measures 1,069,720 mm³, 5.7% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,750 mm³, 12.0% below the reference mean. With a Z-score of -0.83 (20.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,925 mm³, 10.0% below the reference mean. With a Z-score of -0.83 (20.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,849 mm³, 11.4% below the reference mean. With a Z-score of -0.94 (17.3th percentile), this represents normal volume . ",
  "text_data": "Age is 69.8 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Respiratory; Endocrine-Metabolic; Hematopoietic-Lymphatic. MMSE: 30.0. MoCA: 26.0. Logical Memory: 7.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive screening (MMSE 30, MoCA 26) is within normal limits for age, though MoCA is slightly lower than MMSE, which may suggest subtle cognitive inefficiency. APOE4 carrier status increases Alzheimer’s risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to slightly low MoCA and APOE4 status, but no structural or significant cognitive deficits)",
  "timestamp": "2025-07-25T22:16:31.007900"
}