{
  "ptid_time": "127_S_5228_2015-07-10",
  "img_path": "/data/qiuhui/data/adni/images/127_S_5228/2015-07-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,650 mm³, 5.6% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; hippocampal volume measures 7,755 mm³, 9.0% above the reference mean. With a Z-score of 0.83 (79.6th percentile), this represents normal volume ; whole brain volume measures 1,003,270 mm³, 2.9% above the reference mean. With a Z-score of 0.37 (64.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,414 mm³, 7.0% below the reference mean. With a Z-score of -0.43 (33.3th percentile), this represents normal volume ; fusiform gyrus volume measures 20,513 mm³, 20.6% above the reference mean. With a Z-score of 1.87 (96.9th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,360 mm³, 16.6% above the reference mean. With a Z-score of 1.44 (92.6th percentile), this represents mild enlargement. ",
  "text_data": "Age is 79.8 years. Gender is Female. Education: 15 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.97 SUVR (normal ); Amyloid beta: 1408.00 pg/mL (normal ); Total tau: 216.90 pg/mL (normal ); Phosphorylated tau: 19.78 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild to moderate enlargement in the fusiform gyrus and middle temporal gyrus, which are not typically associated with Alzheimer's pathology. Cognitive scores (MMSE 30, MoCA 26) are normal or borderline normal, and biomarkers (Aβ, tau, AV45) are all normal, ruling out significant amyloid or tau pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:28:45.885502"
}