{
  "ptid_time": "128_S_4607_2012-06-28",
  "img_path": "/data/qiuhui/data/adni/images/128_S_4607/2012-06-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,879 mm³, 4.0% below the reference mean. With a Z-score of -0.11 (45.5th percentile), this represents normal volume ; whole brain volume measures 1,081,180 mm³, 3.9% above the reference mean. With a Z-score of 0.47 (68.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,442 mm³, 6.9% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,511 mm³, 5.9% above the reference mean. With a Z-score of 0.53 (70.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,994 mm³, 12.0% above the reference mean. With a Z-score of 0.99 (83.9th percentile), this represents normal volume . ",
  "text_data": "Age is 56.2 years. Gender is Female. Education: 20 years. Handedness: Right. Race: Black or African American. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 29.0. MoCA: 30.0. Logical Memory: 19.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ); Amyloid beta: 1546.00 pg/mL (mild elevated); Total tau: 143.10 pg/mL (mild reduced); Phosphorylated tau: 12.13 pg/mL (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are within normal ranges, with no significant atrophy in key regions like the entorhinal cortex. Cognitive scores (MMSE 29, MoCA 30) are intact, and while Aβ is mildly elevated, tau markers are reduced, and AV45 (amyloid PET) is normal.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**  \n\n(No evidence of MCI or dementia; normal cognition with only mild biomarker changes that do not yet suggest pathology.)",
  "timestamp": "2025-07-26T14:02:50.384908"
}