{
  "ptid_time": "099_S_4076_2017-10-20",
  "img_path": "/data/qiuhui/data/adni/images/099_S_4076/2017-10-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,811 mm³, 38.3% above the reference mean. With a Z-score of 0.88 (81.0th percentile), this represents normal volume ; hippocampal volume measures 6,974 mm³, 2.0% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume ; whole brain volume measures 942,286 mm³, 3.3% below the reference mean. With a Z-score of -0.42 (33.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,061 mm³, 10.6% above the reference mean. With a Z-score of 0.65 (74.2th percentile), this represents normal volume ; fusiform gyrus volume measures 19,739 mm³, 16.0% above the reference mean. With a Z-score of 1.46 (92.8th percentile), this represents mild enlargement; middle temporal gyrus volume measures 18,572 mm³, 3.1% below the reference mean. With a Z-score of -0.27 (39.3th percentile), this represents normal volume . ",
  "text_data": "Age is 79.1 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.05 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are all within normal ranges or show mild enlargement (fusiform gyrus), with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 30, MoCA 29) are intact, and amyloid PET (AV45) is normal, ruling out Alzheimer's pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:04:59.131589"
}