{
  "ptid_time": "014_S_0520_2010-08-30",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0520/2010-08-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,171 mm³, 42.7% below the reference mean. With a Z-score of -1.15 (12.4th percentile), this represents mild atrophy; hippocampal volume measures 8,118 mm³, 25.0% above the reference mean. With a Z-score of 2.00 (97.7th percentile), this represents significant enlargement; whole brain volume measures 1,101,240 mm³, 18.6% above the reference mean. With a Z-score of 2.24 (98.7th percentile), this represents significant enlargement; entorhinal cortex volume measures 3,574 mm³, 3.2% above the reference mean. With a Z-score of 0.17 (56.9th percentile), this represents normal volume ; fusiform gyrus volume measures 17,193 mm³, 6.7% above the reference mean. With a Z-score of 0.51 (69.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,330 mm³, 7.2% above the reference mean. With a Z-score of 0.64 (74.0th percentile), this represents normal volume . ",
  "text_data": "Age is 81.7 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 30.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise significant enlargement in hippocampal and whole brain volumes, with normal volumes in other regions. Cognitive scores (MMSE 30, MoCA 28) are intact, and while APOE4 homozygosity is a risk factor, there is no current evidence of cognitive impairment.  \nDiagnosis: **CN (Cognitively Normal)**  \nConfidence: **Medium** (due to conflicting findings—mild atrophy vs. preserved/enlarged volumes and intact cognition despite high genetic risk)",
  "timestamp": "2025-07-25T23:41:55.909416"
}