{
  "ptid_time": "005_S_0602_2007-02-06",
  "img_path": "/data/qiuhui/data/adni/images/005_S_0602/2007-02-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,852 mm³, 48.5% below the reference mean. With a Z-score of -1.16 (12.3th percentile), this represents mild atrophy; hippocampal volume measures 8,227 mm³, 8.8% above the reference mean. With a Z-score of 0.86 (80.6th percentile), this represents normal volume ; whole brain volume measures 1,066,080 mm³, 1.2% below the reference mean. With a Z-score of -0.16 (43.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,756 mm³, 8.4% below the reference mean. With a Z-score of -0.57 (28.4th percentile), this represents normal volume ; fusiform gyrus volume measures 19,675 mm³, 4.4% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,366 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.5th percentile), this represents normal volume . ",
  "text_data": "Age is 71.2 years. Gender is Male. Education: 17 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular enlargement (mild atrophy) but otherwise normal volumes in key regions like the hippocampus, entorhinal cortex, and temporal structures. The MMSE score of 30 is intact, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:12:47.707186"
}