{
  "ptid_time": "022_S_4320_2013-12-06",
  "img_path": "/data/qiuhui/data/adni/images/022_S_4320/2013-12-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,004 mm³, 39.0% above the reference mean. With a Z-score of 0.89 (81.4th percentile), this represents normal volume ; hippocampal volume measures 8,513 mm³, 19.7% above the reference mean. With a Z-score of 1.80 (96.4th percentile), this represents moderate enlargement; whole brain volume measures 1,014,020 mm³, 4.0% above the reference mean. With a Z-score of 0.51 (69.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,658 mm³, 0.4% below the reference mean. With a Z-score of -0.02 (49.0th percentile), this represents normal volume ; fusiform gyrus volume measures 15,217 mm³, 10.6% below the reference mean. With a Z-score of -0.96 (16.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,244 mm³, 10.8% above the reference mean. With a Z-score of 0.94 (82.6th percentile), this represents normal volume . ",
  "text_data": "Age is 72.7 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.20 SUVR (normal ); Amyloid beta: 922.50 pg/mL (normal ); Total tau: 296.30 pg/mL (normal ); Phosphorylated tau: 27.12 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE, MoCA) are perfect, and biomarkers (Aβ, tau, AV45) are normal, with no APOE4 risk alleles.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:20:22.680044"
}