{
  "ptid_time": "114_S_6309_2020-10-20",
  "img_path": "/data/qiuhui/data/adni/images/114_S_6309/2020-10-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,492 mm³, 5.2% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; hippocampal volume measures 7,816 mm³, 1.7% above the reference mean. With a Z-score of 0.19 (57.6th percentile), this represents normal volume ; whole brain volume measures 1,010,060 mm³, 1.9% below the reference mean. With a Z-score of -0.23 (40.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,306 mm³, 10.6% above the reference mean. With a Z-score of 0.82 (79.5th percentile), this represents normal volume ; fusiform gyrus volume measures 20,235 mm³, 11.1% above the reference mean. With a Z-score of 1.25 (89.5th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,906 mm³, 1.9% above the reference mean. With a Z-score of 0.17 (56.6th percentile), this represents normal volume . ",
  "text_data": "Age is 67.7 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges, with only the fusiform gyrus showing mild enlargement (not clinically concerning). Cognitive scores (MMSE 29, MoCA 26) are normal for age, and amyloid PET (AV45) is negative. No APOE4 risk alleles are present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:49:31.951965"
}