{
  "ptid_time": "012_S_6073_2018-10-31",
  "img_path": "/data/qiuhui/data/adni/images/012_S_6073/2018-10-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 86,996 mm³, 189.7% above the reference mean. With a Z-score of 4.51 (100.0th percentile), this represents profound enlargement; hippocampal volume measures 7,584 mm³, 5.5% below the reference mean. With a Z-score of -0.55 (29.1th percentile), this represents normal volume ; whole brain volume measures 1,130,080 mm³, 0.4% below the reference mean. With a Z-score of -0.06 (47.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,559 mm³, 6.9% above the reference mean. With a Z-score of 0.48 (68.5th percentile), this represents normal volume ; fusiform gyrus volume measures 20,822 mm³, 4.6% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,805 mm³, 16.1% below the reference mean. With a Z-score of -1.33 (9.2th percentile), this represents mild atrophy. ",
  "text_data": "Age is 63.9 years. Gender is Male. Education: 17 years. MMSE: 23.0. MoCA: 19.0. Logical Memory: 2.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound ventricular enlargement (Z-score 4.51), which is strongly suggestive of neurodegeneration, along with mild atrophy in the middle temporal gyrus (Z-score -1.33). Cognitive testing (MMSE 23, MoCA 19) indicates mild cognitive impairment, but hippocampal and whole-brain volumes are within normal limits. The absence of APOE4 reduces but does not eliminate Alzheimer’s risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (ventricular enlargement and cognitive scores support MCI, but normal hippocampal volume and lack of APOE4 introduce some uncertainty).",
  "timestamp": "2025-07-25T23:19:17.551725"
}