{
  "ptid_time": "116_S_0382_2010-08-18",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0382/2010-08-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,292 mm³, 15.0% above the reference mean. With a Z-score of 0.34 (63.5th percentile), this represents normal volume ; hippocampal volume measures 7,068 mm³, 0.7% below the reference mean. With a Z-score of -0.06 (47.6th percentile), this represents normal volume ; whole brain volume measures 940,566 mm³, 3.5% below the reference mean. With a Z-score of -0.44 (33.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,313 mm³, 9.8% below the reference mean. With a Z-score of -0.60 (27.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,674 mm³, 3.9% above the reference mean. With a Z-score of 0.35 (63.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,108 mm³, 0.3% below the reference mean. With a Z-score of -0.03 (48.9th percentile), this represents normal volume . ",
  "text_data": "Age is 79.5 years. Gender is Female. Education: 20 years. Handedness: Unknown. Race: Unknown. MMSE: 30.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:53:34.178675"
}