{
  "ptid_time": "002_S_0413_2012-05-15",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0413/2012-05-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,920 mm³, 8.2% below the reference mean. With a Z-score of -0.22 (41.2th percentile), this represents normal volume ; hippocampal volume measures 6,857 mm³, 5.6% above the reference mean. With a Z-score of 0.45 (67.2th percentile), this represents normal volume ; whole brain volume measures 1,051,630 mm³, 13.3% above the reference mean. With a Z-score of 1.60 (94.5th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,493 mm³, 0.9% above the reference mean. With a Z-score of 0.05 (51.9th percentile), this represents normal volume ; fusiform gyrus volume measures 20,047 mm³, 24.4% above the reference mean. With a Z-score of 1.84 (96.7th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 19,755 mm³, 9.6% above the reference mean. With a Z-score of 0.85 (80.3th percentile), this represents normal volume . ",
  "text_data": "Age is 82.3 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, entorhinal cortex, middle temporal gyrus) are within normal ranges or show enlargement, with no atrophy. Cognitive scores (MMSE 30, MoCA 27) are intact for age, and APOE4-negative status further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:01:40.026787"
}