{
  "ptid_time": "022_S_4266_2012-03-06",
  "img_path": "/data/qiuhui/data/adni/images/022_S_4266/2012-03-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,608 mm³, 30.1% below the reference mean. With a Z-score of -0.69 (24.5th percentile), this represents normal volume ; hippocampal volume measures 7,725 mm³, 8.6% above the reference mean. With a Z-score of 0.79 (78.4th percentile), this represents normal volume ; whole brain volume measures 1,130,050 mm³, 15.9% above the reference mean. With a Z-score of 2.01 (97.8th percentile), this represents significant enlargement; entorhinal cortex volume measures 3,446 mm³, 6.2% below the reference mean. With a Z-score of -0.38 (35.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,886 mm³, 11.0% above the reference mean. With a Z-score of 1.00 (84.2th percentile), this represents mild enlargement; middle temporal gyrus volume measures 21,709 mm³, 13.2% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 70.3 years. Gender is Female. Education: 14 years. MMSE: 30.0. MoCA: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal or above-average ranges, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 28) are intact, and APOE4 status (heterozygous) does not currently indicate impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:18:36.026754"
}