{
  "ptid_time": "012_S_1133_2007-08-01",
  "img_path": "/data/qiuhui/data/adni/images/012_S_1133/2007-08-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,338 mm³, 1.7% below the reference mean. With a Z-score of -0.05 (48.2th percentile), this represents normal volume ; hippocampal volume measures 5,996 mm³, 7.7% below the reference mean. With a Z-score of -0.62 (26.9th percentile), this represents normal volume ; whole brain volume measures 892,076 mm³, 3.9% below the reference mean. With a Z-score of -0.47 (32.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,320 mm³, 4.1% below the reference mean. With a Z-score of -0.22 (41.2th percentile), this represents normal volume ; fusiform gyrus volume measures 12,458 mm³, 22.7% below the reference mean. With a Z-score of -1.70 (4.4th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 14,812 mm³, 17.8% below the reference mean. With a Z-score of -1.59 (5.6th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 80.4 years. Gender is Female. Education: 20 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows normal volumes in most regions, except for moderate atrophy in the fusiform gyrus and middle temporal gyrus. However, the MMSE score of 29 is within the normal range, and there is no APOE4 risk allele present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to localized atrophy but preserved cognitive function)",
  "timestamp": "2025-07-25T23:08:16.868144"
}