{
  "ptid_time": "128_S_4571_2012-11-15",
  "img_path": "/data/qiuhui/data/adni/images/128_S_4571/2012-11-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,644 mm³, 17.9% below the reference mean. With a Z-score of -0.43 (33.5th percentile), this represents normal volume ; hippocampal volume measures 8,501 mm³, 5.9% above the reference mean. With a Z-score of 0.59 (72.2th percentile), this represents normal volume ; whole brain volume measures 1,228,660 mm³, 8.3% above the reference mean. With a Z-score of 1.17 (88.0th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,947 mm³, 16.0% above the reference mean. With a Z-score of 1.11 (86.7th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,955 mm³, 4.8% below the reference mean. With a Z-score of -0.40 (34.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,797 mm³, 1.7% above the reference mean. With a Z-score of 0.14 (55.6th percentile), this represents normal volume . ",
  "text_data": "Age is 61.0 years. Gender is Male. Education: 14 years. MMSE: 30.0. MoCA: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges or mildly enlarged, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 28) are intact, and APOE4 status (heterozygous) does not override the absence of structural or functional deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:02:03.138373"
}