{
  "ptid_time": "141_S_4976_2013-07-01",
  "img_path": "/data/qiuhui/data/adni/images/141_S_4976/2013-07-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,246 mm³, 4.9% below the reference mean. With a Z-score of -0.12 (45.1th percentile), this represents normal volume ; hippocampal volume measures 7,245 mm³, 5.7% below the reference mean. With a Z-score of -0.64 (26.0th percentile), this represents normal volume ; whole brain volume measures 1,125,920 mm³, 9.4% above the reference mean. With a Z-score of 1.17 (87.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,198 mm³, 7.8% above the reference mean. With a Z-score of 0.61 (72.8th percentile), this represents normal volume ; fusiform gyrus volume measures 19,349 mm³, 6.3% above the reference mean. With a Z-score of 0.70 (75.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,324 mm³, 1.0% below the reference mean. With a Z-score of -0.08 (46.6th percentile), this represents normal volume . ",
  "text_data": "Age is 64.1 years. Gender is Female. Education: 20 years. MMSE: 28.0. MoCA: 25.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild deviations (e.g., slightly reduced hippocampal volume but still within normal Z-score limits). Cognitive scores (MMSE 28, MoCA 25) are borderline for MCI but not indicative of dementia. APOE4 carrier status increases Alzheimer’s risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA and APOE4 status, but no clear structural or cognitive deficits supporting MCI/dementia)",
  "timestamp": "2025-07-26T17:06:22.135498"
}