{
  "ptid_time": "100_S_4556_2014-05-06",
  "img_path": "/data/qiuhui/data/adni/images/100_S_4556/2014-05-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,866 mm³, 14.7% below the reference mean. With a Z-score of -0.35 (36.3th percentile), this represents normal volume ; hippocampal volume measures 8,187 mm³, 8.3% above the reference mean. With a Z-score of 0.81 (79.1th percentile), this represents normal volume ; whole brain volume measures 1,064,340 mm³, 1.4% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,592 mm³, 12.0% above the reference mean. With a Z-score of 0.81 (79.2th percentile), this represents normal volume ; fusiform gyrus volume measures 21,225 mm³, 12.7% above the reference mean. With a Z-score of 1.08 (86.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,994 mm³, 7.8% above the reference mean. With a Z-score of 0.70 (75.7th percentile), this represents normal volume . ",
  "text_data": "Age is 74.9 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges or mildly enlarged, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 27) are normal, and amyloid PET (AV45) is negative. No APOE4 risk alleles are present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:26:14.508685"
}