{
  "ptid_time": "067_S_2304_2018-08-24",
  "img_path": "/data/qiuhui/data/adni/images/067_S_2304/2018-08-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,578 mm³, 38.5% above the reference mean. With a Z-score of 0.91 (82.0th percentile), this represents normal volume ; hippocampal volume measures 7,959 mm³, 0.8% below the reference mean. With a Z-score of -0.08 (46.6th percentile), this represents normal volume ; whole brain volume measures 1,211,800 mm³, 6.8% above the reference mean. With a Z-score of 0.96 (83.2th percentile), this represents normal volume ; entorhinal cortex volume measures 5,185 mm³, 21.6% above the reference mean. With a Z-score of 1.50 (93.3th percentile), this represents mild enlargement; fusiform gyrus volume measures 19,281 mm³, 3.2% below the reference mean. With a Z-score of -0.26 (39.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,045 mm³, 1.6% below the reference mean. With a Z-score of -0.13 (44.6th percentile), this represents normal volume . ",
  "text_data": "Age is 68.8 years. Gender is Male. Education: 17 years. MMSE: 26.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (hippocampal, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges, with only mild enlargement in the entorhinal cortex. Cognitive scores (MMSE 26, MoCA 25) are borderline but still within normal limits for age. No APOE4 risk allele is present.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (cognitive scores are borderline, but structural imaging is unremarkable)",
  "timestamp": "2025-07-26T08:36:02.140445"
}