{
  "ptid_time": "014_S_4401_2019-09-09",
  "img_path": "/data/qiuhui/data/adni/images/014_S_4401/2019-09-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,191 mm³, 0.4% above the reference mean. With a Z-score of 0.01 (50.4th percentile), this represents normal volume ; hippocampal volume measures 7,556 mm³, 6.2% above the reference mean. With a Z-score of 0.57 (71.5th percentile), this represents normal volume ; whole brain volume measures 1,064,260 mm³, 9.2% above the reference mean. With a Z-score of 1.16 (87.6th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,303 mm³, 17.2% above the reference mean. With a Z-score of 1.05 (85.4th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,235 mm³, 7.2% above the reference mean. With a Z-score of 0.65 (74.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,483 mm³, 32.9% above the reference mean. With a Z-score of 2.86 (99.8th percentile), this represents significant enlargement. ",
  "text_data": "Age is 75.0 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.17 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are above the reference mean, with some regions showing mild to significant enlargement. Cognitive scores (MMSE 30, MoCA 27) are within normal limits, and amyloid PET (AV45) is normal. APOE4 carrier status does not override the absence of structural atrophy or cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:55:18.744909"
}