{
  "ptid_time": "011_S_6418_2018-06-14",
  "img_path": "/data/qiuhui/data/adni/images/011_S_6418/2018-06-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,803 mm³, 40.7% below the reference mean. With a Z-score of -0.97 (16.7th percentile), this represents normal volume ; hippocampal volume measures 8,740 mm³, 8.9% above the reference mean. With a Z-score of 0.89 (81.3th percentile), this represents normal volume ; whole brain volume measures 1,119,240 mm³, 1.3% below the reference mean. With a Z-score of -0.19 (42.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,925 mm³, 15.5% above the reference mean. With a Z-score of 1.07 (85.9th percentile), this represents mild enlargement; fusiform gyrus volume measures 17,589 mm³, 11.7% below the reference mean. With a Z-score of -0.97 (16.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,204 mm³, 3.5% above the reference mean. With a Z-score of 0.29 (61.5th percentile), this represents normal volume . ",
  "text_data": "Age is 66.7 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. MMSE: 29.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges or mildly enlarged (entorhinal cortex). Cognitive scores (MMSE 29, MoCA 28) are intact, and there is no APOE4 genetic risk. No structural or functional deficits suggest neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:03:42.708006"
}