{
  "ptid_time": "099_S_6097_2019-12-17",
  "img_path": "/data/qiuhui/data/adni/images/099_S_6097/2019-12-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,792 mm³, 30.4% below the reference mean. With a Z-score of -0.73 (23.3th percentile), this represents normal volume ; hippocampal volume measures 7,602 mm³, 0.6% above the reference mean. With a Z-score of 0.05 (52.2th percentile), this represents normal volume ; whole brain volume measures 1,107,120 mm³, 2.6% above the reference mean. With a Z-score of 0.33 (63.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,343 mm³, 5.9% above the reference mean. With a Z-score of 0.40 (65.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,159 mm³, 1.7% above the reference mean. With a Z-score of 0.14 (55.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,277 mm³, 18.5% above the reference mean. With a Z-score of 1.66 (95.1th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 76.6 years. Gender is Male. Education: 18 years. MMSE: 27.0. MoCA: 26.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges, with the middle temporal gyrus showing moderate enlargement. Cognitive scores (MMSE 27, MoCA 26) are within normal limits for age, and amyloid PET (AV45) is normal. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:12:12.914424"
}