{
  "ptid_time": "116_S_4483_2016-04-05",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4483/2016-04-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,190 mm³, 25.4% above the reference mean. With a Z-score of 0.58 (71.9th percentile), this represents normal volume ; hippocampal volume measures 7,282 mm³, 2.4% above the reference mean. With a Z-score of 0.22 (58.5th percentile), this represents normal volume ; whole brain volume measures 979,775 mm³, 0.5% above the reference mean. With a Z-score of 0.07 (52.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,354 mm³, 8.7% below the reference mean. With a Z-score of -0.53 (29.7th percentile), this represents normal volume ; fusiform gyrus volume measures 16,470 mm³, 3.2% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,126 mm³, 5.4% below the reference mean. With a Z-score of -0.47 (31.8th percentile), this represents normal volume . ",
  "text_data": "Age is 73.5 years. Gender is Female. Education: 15 years. MMSE: 29.0. MoCA: 27.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges, with only mild deviations (e.g., entorhinal cortex is slightly reduced but still within normal limits). Cognitive scores (MMSE 29, MoCA 27) are intact, and there is no evidence of amyloid pathology (AV45 normal). APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T12:12:26.459123"
}