{
  "ptid_time": "014_S_4401_2012-12-20",
  "img_path": "/data/qiuhui/data/adni/images/014_S_4401/2012-12-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,176 mm³, 9.7% below the reference mean. With a Z-score of -0.24 (40.4th percentile), this represents normal volume ; hippocampal volume measures 8,046 mm³, 4.7% above the reference mean. With a Z-score of 0.53 (70.1th percentile), this represents normal volume ; whole brain volume measures 1,125,410 mm³, 9.4% above the reference mean. With a Z-score of 1.16 (87.8th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,135 mm³, 6.2% above the reference mean. With a Z-score of 0.48 (68.5th percentile), this represents normal volume ; fusiform gyrus volume measures 18,910 mm³, 3.8% above the reference mean. With a Z-score of 0.43 (66.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,463 mm³, 24.1% above the reference mean. With a Z-score of 2.14 (98.4th percentile), this represents significant enlargement. ",
  "text_data": "Age is 68.5 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures are within or above the reference range, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 30, MoCA 28) are normal, and there is no clinical evidence of impairment.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:54:54.698651"
}