{
  "ptid_time": "011_S_6367_2018-05-16",
  "img_path": "/data/qiuhui/data/adni/images/011_S_6367/2018-05-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,747 mm³, 43.9% below the reference mean. With a Z-score of -1.18 (11.8th percentile), this represents mild atrophy; hippocampal volume measures 8,002 mm³, 23.2% above the reference mean. With a Z-score of 1.86 (96.8th percentile), this represents moderate enlargement; whole brain volume measures 1,145,280 mm³, 23.4% above the reference mean. With a Z-score of 2.81 (99.8th percentile), this represents significant enlargement; entorhinal cortex volume measures 5,240 mm³, 51.3% above the reference mean. With a Z-score of 2.77 (99.7th percentile), this represents significant enlargement; fusiform gyrus volume measures 21,309 mm³, 32.3% above the reference mean. With a Z-score of 2.43 (99.2th percentile), this represents significant enlargement; middle temporal gyrus volume measures 25,329 mm³, 40.5% above the reference mean. With a Z-score of 3.60 (100.0th percentile), this represents profound enlargement. ",
  "text_data": "Age is 81.2 years. Gender is Female. Education: 20 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.45 SUVR (significant elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The imaging data shows significant enlargement in multiple brain regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) with only mild ventricular atrophy. Cognitive scores are normal (MMSE 30) or borderline (MoCA 25), and there is no APOE4 risk allele. Elevated AV45 suggests amyloid deposition, but the structural findings are atypical for Alzheimer's.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting imaging patterns and borderline MoCA, but preserved cognition outweighs amyloid findings)",
  "timestamp": "2025-07-25T23:03:32.334384"
}