{
  "ptid_time": "012_S_4545_2012-09-24",
  "img_path": "/data/qiuhui/data/adni/images/012_S_4545/2012-09-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,039 mm³, 5.8% below the reference mean. With a Z-score of -0.15 (44.2th percentile), this represents normal volume ; hippocampal volume measures 8,202 mm³, 6.7% above the reference mean. With a Z-score of 0.76 (77.5th percentile), this represents normal volume ; whole brain volume measures 1,177,900 mm³, 14.5% above the reference mean. With a Z-score of 1.80 (96.4th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,844 mm³, 1.3% below the reference mean. With a Z-score of -0.10 (46.1th percentile), this represents normal volume ; fusiform gyrus volume measures 18,124 mm³, 0.5% below the reference mean. With a Z-score of -0.05 (47.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,955 mm³, 21.6% above the reference mean. With a Z-score of 1.92 (97.3th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 67.5 years. Gender is Female. Education: 19 years. MMSE: 29.0. MoCA: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, entorhinal cortex, fusiform gyrus) are within normal ranges or even enlarged (whole brain, middle temporal gyrus). Cognitive scores (MMSE 29, MoCA 30) are unimpaired, and there is no APOE4 genetic risk. No structural or functional deficits suggest neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:14:27.099182"
}