{
  "ptid_time": "020_S_1288_2007-10-10",
  "img_path": "/data/qiuhui/data/adni/images/020_S_1288/2007-10-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 10,736 mm³, 64.2% below the reference mean. With a Z-score of -1.53 (6.3th percentile), this represents moderate atrophy; hippocampal volume measures 8,510 mm³, 6.0% above the reference mean. With a Z-score of 0.60 (72.6th percentile), this represents normal volume ; whole brain volume measures 1,224,640 mm³, 7.9% above the reference mean. With a Z-score of 1.12 (87.0th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,000 mm³, 6.2% below the reference mean. With a Z-score of -0.43 (33.5th percentile), this represents normal volume ; fusiform gyrus volume measures 21,843 mm³, 9.7% above the reference mean. With a Z-score of 0.81 (79.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,239 mm³, 3.7% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume . ",
  "text_data": "Age is 60.4 years. Gender is Male. Education: 20 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate atrophy (Z-score -1.53), but hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes are within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular atrophy is notable, but other markers and cognitive performance suggest no impairment)",
  "timestamp": "2025-07-26T01:12:42.564104"
}