{
  "ptid_time": "941_S_6454_2020-09-16",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6454/2020-09-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,330 mm³, 8.1% above the reference mean. With a Z-score of 0.18 (57.3th percentile), this represents normal volume ; hippocampal volume measures 7,623 mm³, 7.1% above the reference mean. With a Z-score of 0.66 (74.4th percentile), this represents normal volume ; whole brain volume measures 1,091,600 mm³, 12.0% above the reference mean. With a Z-score of 1.51 (93.5th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,970 mm³, 35.3% above the reference mean. With a Z-score of 2.17 (98.5th percentile), this represents significant enlargement; fusiform gyrus volume measures 19,400 mm³, 14.0% above the reference mean. With a Z-score of 1.28 (89.9th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,827 mm³, 19.1% above the reference mean. With a Z-score of 1.66 (95.1th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 74.3 years. Gender is Female. Education: 16 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 16.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.07 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are above the reference mean, with Z-scores indicating normal to enlarged volumes. Cognitive scores (MMSE 29, MoCA 28) are within the normal range, and there is no evidence of atrophy or neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:48:15.981967"
}