{
  "ptid_time": "098_S_4018_2011-11-28",
  "img_path": "/data/qiuhui/data/adni/images/098_S_4018/2011-11-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,107 mm³, 14.0% below the reference mean. With a Z-score of -0.34 (36.8th percentile), this represents normal volume ; hippocampal volume measures 8,040 mm³, 6.4% above the reference mean. With a Z-score of 0.62 (73.3th percentile), this represents normal volume ; whole brain volume measures 1,051,740 mm³, 2.6% below the reference mean. With a Z-score of -0.33 (37.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,388 mm³, 17.4% below the reference mean. With a Z-score of -1.18 (11.9th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,452 mm³, 7.4% below the reference mean. With a Z-score of -0.63 (26.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,431 mm³, 0.4% above the reference mean. With a Z-score of 0.04 (51.5th percentile), this represents normal volume . ",
  "text_data": "Age is 76.6 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mostly normal measurements, with mild atrophy only in the entorhinal cortex (Z-score -1.18, 11.9th percentile). Cognitive scores (MMSE 29, MoCA 25) are within normal ranges for age, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to mild entorhinal atrophy, but no significant cognitive impairment or other structural abnormalities)",
  "timestamp": "2025-07-26T10:46:18.981348"
}