{
  "ptid_time": "033_S_0923_2012-10-03",
  "img_path": "/data/qiuhui/data/adni/images/033_S_0923/2012-10-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 49,365 mm³, 5.0% above the reference mean. With a Z-score of 0.15 (55.8th percentile), this represents normal volume ; hippocampal volume measures 7,973 mm³, 14.4% above the reference mean. With a Z-score of 1.25 (89.4th percentile), this represents mild enlargement; whole brain volume measures 962,169 mm³, 6.5% below the reference mean. With a Z-score of -0.85 (19.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,315 mm³, 8.7% above the reference mean. With a Z-score of 0.57 (71.6th percentile), this represents normal volume ; fusiform gyrus volume measures 16,337 mm³, 9.6% below the reference mean. With a Z-score of -0.83 (20.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,247 mm³, 10.3% above the reference mean. With a Z-score of 0.92 (82.2th percentile), this represents normal volume . ",
  "text_data": "Age is 89.1 years. Gender is Male. Education: 14 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.93 SUVR (mild reduced); Amyloid beta: 1371.00 pg/mL (normal ); Total tau: 218.40 pg/mL (normal ); Phosphorylated tau: 19.52 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within normal ranges, with mild enlargement of the hippocampus and normal volumes elsewhere. Cognitive scores (MMSE 30, MoCA 25) are intact for age, and biomarkers (Aβ, T-tau, P-tau) are normal, with only mild AV45 reduction. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:25:38.020232"
}