{
  "ptid_time": "073_S_4360_2014-01-13",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4360/2014-01-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,305 mm³, 18.1% below the reference mean. With a Z-score of -0.45 (32.6th percentile), this represents normal volume ; hippocampal volume measures 8,967 mm³, 16.7% above the reference mean. With a Z-score of 1.87 (96.9th percentile), this represents moderate enlargement; whole brain volume measures 1,115,840 mm³, 8.4% above the reference mean. With a Z-score of 1.05 (85.3th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,565 mm³, 17.3% above the reference mean. With a Z-score of 1.34 (91.0th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,296 mm³, 11.5% above the reference mean. With a Z-score of 1.29 (90.1th percentile), this represents mild enlargement; middle temporal gyrus volume measures 19,359 mm³, 5.7% below the reference mean. With a Z-score of -0.50 (30.8th percentile), this represents normal volume . ",
  "text_data": "Age is 61.5 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.97 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows normal or above-average volumes in key regions, including the hippocampus, entorhinal cortex, fusiform gyrus, and whole brain, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 30) are intact, and amyloid PET (AV45) is normal, ruling out significant Alzheimer's pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:44:16.535596"
}