{
  "ptid_time": "099_S_4076_2019-11-06",
  "img_path": "/data/qiuhui/data/adni/images/099_S_4076/2019-11-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,135 mm³, 11.3% above the reference mean. With a Z-score of 0.30 (62.0th percentile), this represents normal volume ; hippocampal volume measures 6,798 mm³, 4.7% above the reference mean. With a Z-score of 0.37 (64.6th percentile), this represents normal volume ; whole brain volume measures 925,090 mm³, 0.3% below the reference mean. With a Z-score of -0.04 (48.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,770 mm³, 8.9% above the reference mean. With a Z-score of 0.48 (68.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,819 mm³, 16.8% above the reference mean. With a Z-score of 1.26 (89.7th percentile), this represents mild enlargement; middle temporal gyrus volume measures 18,776 mm³, 4.1% above the reference mean. With a Z-score of 0.37 (64.4th percentile), this represents normal volume . ",
  "text_data": "Age is 81.1 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges or mildly enlarged (fusiform gyrus), with no significant atrophy. Cognitive scores (MMSE 30, 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": "2025-07-26T11:05:07.373804"
}