{
  "ptid_time": "016_S_4951_2015-12-02",
  "img_path": "/data/qiuhui/data/adni/images/016_S_4951/2015-12-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,280 mm³, 13.5% below the reference mean. With a Z-score of -0.31 (37.9th percentile), this represents normal volume ; hippocampal volume measures 7,808 mm³, 9.7% above the reference mean. With a Z-score of 0.89 (81.4th percentile), this represents normal volume ; whole brain volume measures 989,784 mm³, 1.6% above the reference mean. With a Z-score of 0.20 (57.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,771 mm³, 2.7% above the reference mean. With a Z-score of 0.16 (56.5th percentile), this represents normal volume ; fusiform gyrus volume measures 17,402 mm³, 2.3% above the reference mean. With a Z-score of 0.21 (58.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,263 mm³, 10.9% above the reference mean. With a Z-score of 0.95 (82.8th percentile), this represents normal volume . ",
  "text_data": "Age is 74.9 years. Gender is Female. Education: 14 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.08 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores close to or above the mean. Cognitive scores (MMSE 30, MoCA 27) are also normal, and amyloid PET (AV45) is negative.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T00:34:03.490548"
}