{
  "ptid_time": "037_S_4381_2012-08-10",
  "img_path": "/data/qiuhui/data/adni/images/037_S_4381/2012-08-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,635 mm³, 21.5% above the reference mean. With a Z-score of 0.62 (73.1th percentile), this represents normal volume ; hippocampal volume measures 7,799 mm³, 0.1% below the reference mean. With a Z-score of -0.02 (49.4th percentile), this represents normal volume ; whole brain volume measures 987,363 mm³, 5.1% below the reference mean. With a Z-score of -0.61 (27.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,739 mm³, 1.2% above the reference mean. With a Z-score of 0.09 (53.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,501 mm³, 5.0% below the reference mean. With a Z-score of -0.46 (32.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,978 mm³, 17.3% below the reference mean. With a Z-score of -1.43 (7.7th percentile), this represents mild atrophy. ",
  "text_data": "Age is 55.5 years. Gender is Female. Education: 17 years. MMSE: 30.0. MoCA: 26.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with only mild atrophy in the middle temporal gyrus (Z-score -1.43, 7.7th percentile). Cognitive testing (MMSE 30, MoCA 26) is within normal limits, though the MoCA is slightly below the typical cutoff for normal cognition (≥26). Given the preserved cognitive function and minimal structural changes, this does not meet criteria for MCI or dementia.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA score and mild temporal atrophy, but overall normal clinical and structural findings)",
  "timestamp": "2025-07-26T06:45:32.417017"
}