{
  "ptid_time": "057_S_0464_2007-01-03",
  "img_path": "/data/qiuhui/data/adni/images/057_S_0464/2007-01-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,131 mm³, 4.0% below the reference mean. With a Z-score of -0.12 (45.4th percentile), this represents normal volume ; hippocampal volume measures 7,158 mm³, 2.7% above the reference mean. With a Z-score of 0.24 (59.3th percentile), this represents normal volume ; whole brain volume measures 975,442 mm³, 5.2% below the reference mean. With a Z-score of -0.68 (24.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,379 mm³, 10.3% above the reference mean. With a Z-score of 0.68 (75.1th percentile), this represents normal volume ; fusiform gyrus volume measures 19,055 mm³, 5.5% above the reference mean. With a Z-score of 0.47 (68.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,870 mm³, 1.5% below the reference mean. With a Z-score of -0.13 (44.7th percentile), this represents normal volume . ",
  "text_data": "Age is 83.6 years. Gender is Male. Education: 16 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "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 29/30 indicates intact cognitive function, and the absence of APOE4 alleles reduces genetic risk for Alzheimer's.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T08:02:47.248622"
}