{
  "ptid_time": "099_S_0534_2006-11-30",
  "img_path": "/data/qiuhui/data/adni/images/099_S_0534/2006-11-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,655 mm³, 52.1% above the reference mean. With a Z-score of 1.24 (89.2th percentile), this represents mild enlargement; hippocampal volume measures 8,809 mm³, 9.7% above the reference mean. With a Z-score of 0.97 (83.5th percentile), this represents normal volume ; whole brain volume measures 1,186,300 mm³, 4.6% above the reference mean. With a Z-score of 0.65 (74.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,370 mm³, 2.5% above the reference mean. With a Z-score of 0.17 (56.9th percentile), this represents normal volume ; fusiform gyrus volume measures 19,731 mm³, 0.9% below the reference mean. With a Z-score of -0.07 (47.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 26,751 mm³, 19.4% above the reference mean. With a Z-score of 1.59 (94.5th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 63.3 years. Gender is Male. Education: 18 years. MMSE: 29.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular enlargement and moderate middle temporal gyrus enlargement, but hippocampal, whole brain, entorhinal cortex, and fusiform gyrus volumes are within normal ranges. The MMSE score of 29 is normal, and there is no clear evidence of cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild ventricular enlargement, but no other significant structural or cognitive deficits)",
  "timestamp": "2025-07-26T10:57:41.438873"
}