{
  "ptid_time": "114_S_2392_2017-08-25",
  "img_path": "/data/qiuhui/data/adni/images/114_S_2392/2017-08-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,220 mm³, 50.4% above the reference mean. With a Z-score of 1.15 (87.6th percentile), this represents mild enlargement; hippocampal volume measures 7,220 mm³, 1.5% above the reference mean. With a Z-score of 0.14 (55.4th percentile), this represents normal volume ; whole brain volume measures 1,047,050 mm³, 7.4% above the reference mean. With a Z-score of 0.94 (82.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,185 mm³, 13.9% above the reference mean. With a Z-score of 0.86 (80.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,828 mm³, 4.8% above the reference mean. With a Z-score of 0.44 (66.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,474 mm³, 22.5% above the reference mean. With a Z-score of 1.95 (97.4th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 70.4 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.07 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows mild enlargement (50.4% above reference mean), which can be associated with atrophy, but hippocampal and other key brain volumes (entorhinal cortex, fusiform gyrus) are within normal ranges. Cognitive scores (MMSE 29, MoCA 28) are intact, and amyloid PET (AV45) is normal, making neurodegenerative dementia unlikely.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:46:12.954732"
}