{
  "ptid_time": "116_S_0382_2009-06-12",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0382/2009-06-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,996 mm³, 3.3% above the reference mean. With a Z-score of 0.08 (53.0th percentile), this represents normal volume ; hippocampal volume measures 7,110 mm³, 0.1% below the reference mean. With a Z-score of -0.01 (49.8th percentile), this represents normal volume ; whole brain volume measures 962,230 mm³, 1.3% below the reference mean. With a Z-score of -0.16 (43.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,281 mm³, 10.7% below the reference mean. With a Z-score of -0.65 (25.6th percentile), this represents normal volume ; fusiform gyrus volume measures 17,778 mm³, 4.5% above the reference mean. With a Z-score of 0.41 (65.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,454 mm³, 1.5% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume . ",
  "text_data": "Age is 78.5 years. Gender is Female. Education: 20 years. MMSE: 29.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only the entorhinal cortex showing a mild reduction (25.6th percentile, still within normal limits). The MMSE score of 29 is normal, and there is no APOE4 genetic risk factor. No significant atrophy or cognitive impairment is evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:53:26.753747"
}