{
  "ptid_time": "023_S_4115_2018-01-24",
  "img_path": "/data/qiuhui/data/adni/images/023_S_4115/2018-01-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,606 mm³, 10.2% below the reference mean. With a Z-score of -0.24 (40.4th percentile), this represents normal volume ; hippocampal volume measures 8,556 mm³, 13.2% above the reference mean. With a Z-score of 1.29 (90.1th percentile), this represents mild enlargement; whole brain volume measures 1,122,310 mm³, 4.0% above the reference mean. With a Z-score of 0.52 (69.7th percentile), this represents normal volume ; entorhinal cortex volume measures 5,865 mm³, 43.0% above the reference mean. With a Z-score of 2.92 (99.8th percentile), this represents significant enlargement; fusiform gyrus volume measures 21,464 mm³, 13.9% above the reference mean. With a Z-score of 1.19 (88.2th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,545 mm³, 5.7% above the reference mean. With a Z-score of 0.51 (69.4th percentile), this represents normal volume . ",
  "text_data": "Age is 73.9 years. Gender is Male. Education: 18 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in all regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's. Cognitive scores (MMSE 30, MoCA 27) are within normal ranges, and amyloid PET (AV45) is normal. No APOE4 risk alleles are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T03:02:32.316164"
}