{
  "ptid_time": "073_S_4360_2015-12-22",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4360/2015-12-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,682 mm³, 7.4% below the reference mean. With a Z-score of -0.19 (42.6th percentile), this represents normal volume ; hippocampal volume measures 8,798 mm³, 14.5% above the reference mean. With a Z-score of 1.63 (94.8th percentile), this represents moderate enlargement; whole brain volume measures 1,102,200 mm³, 7.1% above the reference mean. With a Z-score of 0.88 (81.2th percentile), this represents normal volume ; entorhinal cortex volume measures 4,434 mm³, 13.9% above the reference mean. With a Z-score of 1.08 (85.9th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,030 mm³, 10.0% above the reference mean. With a Z-score of 1.13 (87.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 19,801 mm³, 3.5% below the reference mean. With a Z-score of -0.31 (37.8th percentile), this represents normal volume . ",
  "text_data": "Age is 63.5 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.98 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in key regions, including the hippocampus, entorhinal cortex, and fusiform gyrus, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 29) are in the normal range, and amyloid PET (AV45) is normal. APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:44:24.347140"
}