{
  "ptid_time": "168_S_6426_2019-10-16",
  "img_path": "/data/qiuhui/data/adni/images/168_S_6426/2019-10-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,916 mm³, 32.6% below the reference mean. With a Z-score of -0.88 (18.9th percentile), this represents normal volume ; hippocampal volume measures 6,893 mm³, 6.1% above the reference mean. With a Z-score of 0.49 (68.8th percentile), this represents normal volume ; whole brain volume measures 982,213 mm³, 5.8% above the reference mean. With a Z-score of 0.70 (75.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,067 mm³, 17.5% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,199 mm³, 6.8% above the reference mean. With a Z-score of 0.51 (69.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,408 mm³, 7.7% above the reference mean. With a Z-score of 0.68 (75.2th percentile), this represents normal volume . ",
  "text_data": "Age is 80.5 years. Gender is Female. Education: 14 years. MMSE: 26.0. MoCA: 24.0. Logical Memory: 7.0. 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) are within normal ranges, with Z-scores and percentiles indicating no significant atrophy. Cognitive scores (MMSE 26, MoCA 24) are borderline but not definitively impaired for age. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (cognitive scores are slightly low for age, but structural imaging is entirely normal)",
  "timestamp": "2025-07-26T17:21:12.385099"
}