{
  "ptid_time": "136_S_1227_2008-09-29",
  "img_path": "/data/qiuhui/data/adni/images/136_S_1227/2008-09-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,535 mm³, 17.0% below the reference mean. With a Z-score of -0.43 (33.5th percentile), this represents normal volume ; hippocampal volume measures 7,345 mm³, 4.4% below the reference mean. With a Z-score of -0.50 (31.0th percentile), this represents normal volume ; whole brain volume measures 917,334 mm³, 10.9% below the reference mean. With a Z-score of -1.35 (8.8th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,423 mm³, 12.1% below the reference mean. With a Z-score of -0.94 (17.5th percentile), this represents normal volume ; fusiform gyrus volume measures 16,106 mm³, 11.6% below the reference mean. With a Z-score of -1.30 (9.7th percentile), this represents mild atrophy; middle temporal gyrus volume measures 21,492 mm³, 4.7% above the reference mean. With a Z-score of 0.42 (66.3th percentile), this represents normal volume . ",
  "text_data": "Age is 66.1 years. Gender is Female. Education: 12 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild atrophy in the whole brain and fusiform gyrus, while other regions (hippocampus, entorhinal cortex, etc.) are within normal ranges. The MMSE score of 29 is normal, and the absence of APOE4 reduces genetic predisposition to Alzheimer's. The mild atrophy could be age-related rather than pathological.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium",
  "timestamp": "2025-07-26T16:05:42.879266"
}