{
  "ptid_time": "023_S_4020_2015-07-13",
  "img_path": "/data/qiuhui/data/adni/images/023_S_4020/2015-07-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,287 mm³, 36.9% below the reference mean. With a Z-score of -0.89 (18.8th percentile), this represents normal volume ; hippocampal volume measures 7,765 mm³, 2.7% above the reference mean. With a Z-score of 0.27 (60.5th percentile), this represents normal volume ; whole brain volume measures 1,162,390 mm³, 7.7% above the reference mean. With a Z-score of 1.00 (84.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,090 mm³, 0.3% below the reference mean. With a Z-score of -0.02 (49.3th percentile), this represents normal volume ; fusiform gyrus volume measures 21,903 mm³, 16.3% above the reference mean. With a Z-score of 1.39 (91.7th percentile), this represents mild enlargement; middle temporal gyrus volume measures 23,581 mm³, 10.5% above the reference mean. With a Z-score of 0.94 (82.8th percentile), this represents normal volume . ",
  "text_data": "Age is 70.5 years. Gender is Male. Education: 16 years. MMSE: 27.0. MoCA: 25.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges or mildly enlarged, with no significant atrophy. Cognitive scores (MMSE 27, MoCA 25) are within normal limits for age, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T03:00:39.973300"
}