{
  "ptid_time": "127_S_0260_2008-05-13",
  "img_path": "/data/qiuhui/data/adni/images/127_S_0260/2008-05-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,981 mm³, 32.4% below the reference mean. With a Z-score of -0.88 (19.1th percentile), this represents normal volume ; hippocampal volume measures 5,960 mm³, 8.2% below the reference mean. With a Z-score of -0.66 (25.5th percentile), this represents normal volume ; whole brain volume measures 894,931 mm³, 3.6% below the reference mean. With a Z-score of -0.43 (33.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,431 mm³, 28.0% above the reference mean. With a Z-score of 1.51 (93.4th percentile), this represents moderate enlargement; fusiform gyrus volume measures 15,605 mm³, 3.1% below the reference mean. With a Z-score of -0.24 (40.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,541 mm³, 2.7% below the reference mean. With a Z-score of -0.24 (40.5th percentile), this represents normal volume . ",
  "text_data": "Age is 80.6 years. Gender is Female. Education: 13 years. MMSE: 30.0. Logical Memory: 8.0. Laboratory findings: Thyroid Stim. Hormone: 9.58 (profound elevated). 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, with the entorhinal cortex showing moderate enlargement—an atypical but not necessarily pathological finding. The MMSE score of 30/30 and absence of APOE4 further support normal cognitive function.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:58:15.389780"
}