{
  "ptid_time": "006_S_0498_2012-10-01",
  "img_path": "/data/qiuhui/data/adni/images/006_S_0498/2012-10-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,139 mm³, 14.6% above the reference mean. With a Z-score of 0.35 (63.7th percentile), this represents normal volume ; hippocampal volume measures 7,081 mm³, 6.3% below the reference mean. With a Z-score of -0.62 (26.9th percentile), this represents normal volume ; whole brain volume measures 1,074,630 mm³, 0.4% below the reference mean. With a Z-score of -0.06 (47.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,489 mm³, 9.5% above the reference mean. With a Z-score of 0.64 (74.0th percentile), this represents normal volume ; fusiform gyrus volume measures 19,150 mm³, 1.7% above the reference mean. With a Z-score of 0.14 (55.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,365 mm³, 4.6% below the reference mean. With a Z-score of -0.41 (34.1th percentile), this represents normal volume . ",
  "text_data": "Age is 76.3 years. Gender is Male. Education: 12 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 22.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive screening (MMSE 30, MoCA 28) is intact, and APOE4 status (heterozygous) does not override the absence of structural or functional deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:27:04.204134"
}