{
  "ptid_time": "002_S_4213_2017-08-14",
  "img_path": "/data/qiuhui/data/adni/images/002_S_4213/2017-08-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,344 mm³, 14.6% above the reference mean. With a Z-score of 0.39 (65.3th percentile), this represents normal volume ; hippocampal volume measures 7,127 mm³, 9.7% above the reference mean. With a Z-score of 0.78 (78.2th percentile), this represents normal volume ; whole brain volume measures 964,374 mm³, 3.9% above the reference mean. With a Z-score of 0.47 (68.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,684 mm³, 35.3% above the reference mean. With a Z-score of 1.90 (97.2th percentile), this represents moderate enlargement; fusiform gyrus volume measures 18,744 mm³, 16.4% above the reference mean. With a Z-score of 1.23 (89.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 19,174 mm³, 6.4% above the reference mean. With a Z-score of 0.57 (71.4th percentile), this represents normal volume . ",
  "text_data": "Age is 84.0 years. Gender is Female. Education: 14 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within or above the reference range, with no significant atrophy in key regions like the hippocampus or whole brain. Cognitive scores (MMSE 28, MoCA 26) are within normal limits for age, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:21:33.387459"
}