{
  "ptid_time": "003_S_4350_2019-11-04",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4350/2019-11-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,932 mm³, 51.2% below the reference mean. With a Z-score of -1.49 (6.8th percentile), this represents mild atrophy; hippocampal volume measures 7,353 mm³, 5.5% above the reference mean. With a Z-score of 0.48 (68.3th percentile), this represents normal volume ; whole brain volume measures 1,107,200 mm³, 7.6% above the reference mean. With a Z-score of 0.99 (84.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,396 mm³, 10.8% above the reference mean. With a Z-score of 0.70 (75.9th percentile), this represents normal volume ; fusiform gyrus volume measures 19,552 mm³, 8.2% above the reference mean. With a Z-score of 0.71 (76.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,241 mm³, 25.1% above the reference mean. With a Z-score of 2.25 (98.8th percentile), this represents significant enlargement. ",
  "text_data": "Age is 80.9 years. Gender is Male. Education: 13 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.11 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal or above-average volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, and middle temporal gyrus). Cognitive scores (MMSE 28, MoCA 26) are within normal limits, and amyloid PET (AV45) is negative. No APOE4 risk alleles are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:52:30.885099"
}