{
  "ptid_time": "127_S_4148_2017-07-18",
  "img_path": "/data/qiuhui/data/adni/images/127_S_4148/2017-07-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,741 mm³, 48.7% below the reference mean. With a Z-score of -1.17 (12.1th percentile), this represents mild atrophy; hippocampal volume measures 7,902 mm³, 4.5% above the reference mean. With a Z-score of 0.44 (67.1th percentile), this represents normal volume ; whole brain volume measures 1,067,900 mm³, 1.1% below the reference mean. With a Z-score of -0.14 (44.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,095 mm³, 0.1% below the reference mean. With a Z-score of -0.01 (49.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,795 mm³, 5.1% above the reference mean. With a Z-score of 0.43 (66.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,924 mm³, 1.9% below the reference mean. With a Z-score of -0.17 (43.1th percentile), this represents normal volume . ",
  "text_data": "Age is 79.0 years. Gender is Male. Education: 18 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.98 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, etc.). Cognitive scores (MMSE 30, MoCA 27) are within normal limits for age, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:13:48.395905"
}