{
  "ptid_time": "109_S_0967_2007-06-19",
  "img_path": "/data/qiuhui/data/adni/images/109_S_0967/2007-06-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,268 mm³, 0.6% below the reference mean. With a Z-score of -0.02 (49.4th percentile), this represents normal volume ; hippocampal volume measures 7,575 mm³, 0.2% above the reference mean. With a Z-score of 0.02 (50.8th percentile), this represents normal volume ; whole brain volume measures 984,957 mm³, 8.7% below the reference mean. With a Z-score of -1.14 (12.8th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,472 mm³, 15.3% below the reference mean. With a Z-score of -1.04 (14.9th percentile), this represents mild atrophy; fusiform gyrus volume measures 15,572 mm³, 17.3% below the reference mean. With a Z-score of -1.48 (7.0th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,274 mm³, 5.0% below the reference mean. With a Z-score of -0.45 (32.7th percentile), this represents normal volume . ",
  "text_data": "Age is 77.3 years. Gender is Male. Education: 20 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild atrophy in the whole brain, entorhinal cortex, and fusiform gyrus, but hippocampal and ventricular volumes are normal. The MMSE score of 30 is intact, and there is no APOE4 genetic risk factor. The atrophy patterns are concerning but not yet clinically significant.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium",
  "timestamp": "2025-07-26T11:28:43.045714"
}