{
  "ptid_time": "037_S_5126_2013-04-25",
  "img_path": "/data/qiuhui/data/adni/images/037_S_5126/2013-04-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 51,558 mm³, 130.8% above the reference mean. With a Z-score of 3.27 (99.9th percentile), this represents profound enlargement; hippocampal volume measures 6,969 mm³, 9.3% below the reference mean. With a Z-score of -1.04 (14.8th percentile), this represents mild atrophy; whole brain volume measures 1,064,940 mm³, 3.5% above the reference mean. With a Z-score of 0.43 (66.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,303 mm³, 15.2% below the reference mean. With a Z-score of -1.17 (12.0th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,820 mm³, 3.3% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,969 mm³, 7.1% above the reference mean. With a Z-score of 0.63 (73.5th percentile), this represents normal volume . ",
  "text_data": "Age is 68.5 years. Gender is Female. Education: 12 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Allergies or Drug Sensitivities. MMSE: 30.0. MoCA: 27.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound ventricular enlargement (suggesting significant atrophy) and mild hippocampal and entorhinal cortex atrophy, which are early markers of Alzheimer's pathology. However, cognitive scores (MMSE 30, MoCA 27) are within normal limits, and amyloid PET (AV45) is normal, making dementia unlikely.  \n**Diagnosis:** **MCI** (due to structural changes without overt cognitive decline)  \n**Confidence:** **Medium** (structural changes are concerning, but normal cognition and amyloid reduce certainty)",
  "timestamp": "2025-07-26T06:49:30.721384"
}