{
  "ptid_time": "002_S_0413_2011-06-16",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0413/2011-06-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,902 mm³, 11.0% below the reference mean. With a Z-score of -0.30 (38.3th percentile), this represents normal volume ; hippocampal volume measures 6,848 mm³, 5.4% above the reference mean. With a Z-score of 0.44 (66.8th percentile), this represents normal volume ; whole brain volume measures 1,059,280 mm³, 14.1% above the reference mean. With a Z-score of 1.70 (95.5th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,074 mm³, 17.7% above the reference mean. With a Z-score of 0.95 (83.0th percentile), this represents normal volume ; fusiform gyrus volume measures 20,022 mm³, 24.3% above the reference mean. With a Z-score of 1.83 (96.6th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 20,173 mm³, 11.9% above the reference mean. With a Z-score of 1.06 (85.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 81.3 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 30.0. MoCA: 28.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are all within normal or above-average ranges, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 30, MoCA 28) are intact, and amyloid PET (AV45) is normal, with no APOE4 risk alleles.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:01:35.046886"
}