{
  "ptid_time": "129_S_6457_2020-07-27",
  "img_path": "/data/qiuhui/data/adni/images/129_S_6457/2020-07-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,088 mm³, 1.5% above the reference mean. With a Z-score of 0.04 (51.4th percentile), this represents normal volume ; hippocampal volume measures 7,268 mm³, 3.8% below the reference mean. With a Z-score of -0.38 (35.4th percentile), this represents normal volume ; whole brain volume measures 1,078,020 mm³, 0.1% below the reference mean. With a Z-score of -0.02 (49.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,714 mm³, 15.0% above the reference mean. With a Z-score of 1.01 (84.5th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,191 mm³, 7.2% above the reference mean. With a Z-score of 0.61 (73.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,837 mm³, 2.4% below the reference mean. With a Z-score of -0.21 (41.6th percentile), this represents normal volume . ",
  "text_data": "Age is 76.6 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 27.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild deviations (e.g., slightly reduced hippocampal volume and mildly enlarged entorhinal cortex). Cognitive scores (MMSE 29, MoCA 27) are within normal limits for age, and amyloid PET (AV45) is normal. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:19:52.430342"
}