{
  "ptid_time": "007_S_4516_2012-08-27",
  "img_path": "/data/qiuhui/data/adni/images/007_S_4516/2012-08-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,105 mm³, 11.5% below the reference mean. With a Z-score of -0.27 (39.2th percentile), this represents normal volume ; hippocampal volume measures 7,372 mm³, 2.5% below the reference mean. With a Z-score of -0.24 (40.5th percentile), this represents normal volume ; whole brain volume measures 1,086,310 mm³, 0.6% above the reference mean. With a Z-score of 0.08 (53.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,331 mm³, 5.6% above the reference mean. With a Z-score of 0.38 (64.8th percentile), this represents normal volume ; fusiform gyrus volume measures 21,628 mm³, 14.8% above the reference mean. With a Z-score of 1.26 (89.6th percentile), this represents mild enlargement; middle temporal gyrus volume measures 23,301 mm³, 9.2% above the reference mean. With a Z-score of 0.83 (79.6th percentile), this represents normal volume . ",
  "text_data": "Age is 71.9 years. Gender is Male. Education: 20 years. MMSE: 26.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges or slightly above, with no significant atrophy. Cognitive scores (MMSE 26, MoCA 26) are borderline but still within normal limits for age. No APOE4 risk allele is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline cognitive scores, but structural imaging is reassuring)",
  "timestamp": "2025-07-25T22:02:37.055454"
}