{
  "ptid_time": "013_S_4268_2018-11-19",
  "img_path": "/data/qiuhui/data/adni/images/013_S_4268/2018-11-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,148 mm³, 21.1% below the reference mean. With a Z-score of -0.48 (31.5th percentile), this represents normal volume ; hippocampal volume measures 7,628 mm³, 7.2% above the reference mean. With a Z-score of 0.66 (74.6th percentile), this represents normal volume ; whole brain volume measures 989,592 mm³, 1.5% above the reference mean. With a Z-score of 0.19 (57.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,637 mm³, 1.0% below the reference mean. With a Z-score of -0.06 (47.6th percentile), this represents normal volume ; fusiform gyrus volume measures 17,373 mm³, 2.1% above the reference mean. With a Z-score of 0.19 (57.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,133 mm³, 5.4% below the reference mean. With a Z-score of -0.47 (31.9th percentile), this represents normal volume . ",
  "text_data": "Age is 70.5 years. Gender is Female. Education: 15 years. MoCA: 29.0. APOEε4 alleles: 0.0. 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, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MoCA score of 29/30 indicates intact cognitive function, and the absence of APOE4 and normal AV45 (amyloid PET) further support no significant neurodegenerative pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:31:04.953355"
}