{
  "ptid_time": "135_S_4722_2019-06-25",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4722/2019-06-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,114 mm³, 21.5% above the reference mean. With a Z-score of 0.49 (68.9th percentile), this represents normal volume ; hippocampal volume measures 7,720 mm³, 8.5% above the reference mean. With a Z-score of 0.78 (78.3th percentile), this represents normal volume ; whole brain volume measures 977,748 mm³, 0.3% above the reference mean. With a Z-score of 0.04 (51.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,635 mm³, 1.0% below the reference mean. With a Z-score of -0.06 (47.5th percentile), this represents normal volume ; fusiform gyrus volume measures 16,195 mm³, 4.8% below the reference mean. With a Z-score of -0.44 (33.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,704 mm³, 8.0% above the reference mean. With a Z-score of 0.69 (75.6th percentile), this represents normal volume . ",
  "text_data": "Age is 75.0 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 29, MoCA 26) are within normal limits, and amyloid PET (AV45) is normal. No APOE4 risk alleles are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:42:59.032799"
}