{
  "ptid_time": "041_S_4989_2013-10-25",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4989/2013-10-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,273 mm³, 36.1% below the reference mean. With a Z-score of -0.90 (18.3th percentile), this represents normal volume ; hippocampal volume measures 7,983 mm³, 3.9% above the reference mean. With a Z-score of 0.44 (66.9th percentile), this represents normal volume ; whole brain volume measures 1,104,200 mm³, 7.3% above the reference mean. With a Z-score of 0.91 (81.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,436 mm³, 11.7% below the reference mean. With a Z-score of -0.91 (18.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,522 mm³, 1.7% above the reference mean. With a Z-score of 0.19 (57.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,780 mm³, 15.9% above the reference mean. With a Z-score of 1.41 (92.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 61.1 years. Gender is Female. Education: 19 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges, with only the middle temporal gyrus showing mild enlargement (not typically associated with neurodegeneration). Cognitive scores (MMSE 29, MoCA 28) are intact, and there is no APOE4 risk allele. No structural or clinical evidence of impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:23:06.508244"
}