{
  "ptid_time": "020_S_6185_2018-01-25",
  "img_path": "/data/qiuhui/data/adni/images/020_S_6185/2018-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,444 mm³, 22.5% below the reference mean. With a Z-score of -0.65 (25.7th percentile), this represents normal volume ; hippocampal volume measures 7,538 mm³, 8.2% above the reference mean. With a Z-score of 0.71 (76.0th percentile), this represents normal volume ; whole brain volume measures 1,201,060 mm³, 16.7% above the reference mean. With a Z-score of 2.19 (98.6th percentile), this represents significant enlargement; entorhinal cortex volume measures 4,758 mm³, 19.9% above the reference mean. With a Z-score of 1.30 (90.3th percentile), this represents mild enlargement; fusiform gyrus volume measures 23,062 mm³, 27.7% above the reference mean. With a Z-score of 2.39 (99.2th percentile), this represents significant enlargement; middle temporal gyrus volume measures 24,293 mm³, 20.4% above the reference mean. With a Z-score of 1.83 (96.6th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 82.7 years. Gender is Male. Education: 18 years. Handedness: Left. Race: White. MMSE: 27.0. MoCA: 25.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.08 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in all regions, including the hippocampus, which is typically affected in Alzheimer's disease. Cognitive scores (MMSE 27, MoCA 25) are within normal limits for age, and amyloid PET (AV45) is normal, ruling out significant amyloid pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:17:45.811343"
}