{
  "ptid_time": "029_S_0866_2007-10-30",
  "img_path": "/data/qiuhui/data/adni/images/029_S_0866/2007-10-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,183 mm³, 23.8% below the reference mean. With a Z-score of -0.64 (26.1th percentile), this represents normal volume ; hippocampal volume measures 6,623 mm³, 2.0% above the reference mean. With a Z-score of 0.16 (56.3th percentile), this represents normal volume ; whole brain volume measures 957,796 mm³, 3.2% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,697 mm³, 6.8% above the reference mean. With a Z-score of 0.37 (64.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,680 mm³, 9.7% above the reference mean. With a Z-score of 0.73 (76.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,008 mm³, 5.7% below the reference mean. With a Z-score of -0.50 (30.7th percentile), this represents normal volume . ",
  "text_data": "Age is 81.0 years. Gender is Female. Education: 13 years. MMSE: 29.0. Logical Memory: 12.0. 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) are within normal ranges based on Z-scores and percentiles. The MMSE score of 29/30 is also within the normal range, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T04:18:47.394757"
}