{
  "ptid_time": "057_S_1269_2008-08-06",
  "img_path": "/data/qiuhui/data/adni/images/057_S_1269/2008-08-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,268 mm³, 12.3% above the reference mean. With a Z-score of 0.30 (61.6th percentile), this represents normal volume ; hippocampal volume measures 7,035 mm³, 6.9% below the reference mean. With a Z-score of -0.68 (24.9th percentile), this represents normal volume ; whole brain volume measures 1,030,640 mm³, 4.5% below the reference mean. With a Z-score of -0.59 (27.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,355 mm³, 6.2% above the reference mean. With a Z-score of 0.42 (66.3th percentile), this represents normal volume ; fusiform gyrus volume measures 18,270 mm³, 3.0% below the reference mean. With a Z-score of -0.26 (39.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,413 mm³, 5.0% above the reference mean. With a Z-score of 0.45 (67.5th percentile), this represents normal volume . ",
  "text_data": "Age is 74.9 years. Gender is Male. Education: 20 years. MMSE: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (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 27 is within the normal range (≥26), and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T08:10:53.297473"
}