{
  "ptid_time": "022_S_5004_2019-04-05",
  "img_path": "/data/qiuhui/data/adni/images/022_S_5004/2019-04-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,039 mm³, 6.4% below the reference mean. With a Z-score of -0.15 (43.9th percentile), this represents normal volume ; hippocampal volume measures 8,508 mm³, 12.5% above the reference mean. With a Z-score of 1.22 (89.0th percentile), this represents mild enlargement; whole brain volume measures 1,163,090 mm³, 7.8% above the reference mean. With a Z-score of 1.01 (84.3th percentile), this represents mild enlargement; entorhinal cortex volume measures 5,304 mm³, 29.3% above the reference mean. With a Z-score of 1.99 (97.7th percentile), this represents moderate enlargement; fusiform gyrus volume measures 23,029 mm³, 22.2% above the reference mean. With a Z-score of 1.89 (97.1th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 20,545 mm³, 3.7% below the reference mean. With a Z-score of -0.33 (36.9th percentile), this represents normal volume . ",
  "text_data": "Age is 71.1 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus), with no significant atrophy. Cognitive scores (MMSE 29, MoCA 28) are within normal range, and amyloid PET (AV45) is negative. APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:23:15.653488"
}