{
  "ptid_time": "168_S_6085_2017-10-03",
  "img_path": "/data/qiuhui/data/adni/images/168_S_6085/2017-10-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,028 mm³, 2.2% above the reference mean. With a Z-score of 0.06 (52.5th percentile), this represents normal volume ; hippocampal volume measures 9,538 mm³, 22.2% above the reference mean. With a Z-score of 3.08 (99.9th percentile), this represents profound enlargement; whole brain volume measures 1,179,120 mm³, 13.3% above the reference mean. With a Z-score of 1.60 (94.5th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,647 mm³, 1.3% below the reference mean. With a Z-score of -0.10 (45.9th percentile), this represents normal volume ; fusiform gyrus volume measures 20,920 mm³, 13.5% above the reference mean. With a Z-score of 1.23 (89.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 23,122 mm³, 12.6% above the reference mean. With a Z-score of 1.04 (85.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 55.8 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 27.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows no significant atrophy in key regions typically affected in Alzheimer's disease (e.g., hippocampus is enlarged, not reduced). Cognitive scores (MMSE 30, MoCA 27) are within normal limits, and amyloid PET (AV45) is normal. No genetic risk (APOE4 negative).  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:17:44.820521"
}