{
  "ptid_time": "136_S_0184_2007-03-19",
  "img_path": "/data/qiuhui/data/adni/images/136_S_0184/2007-03-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 8,296 mm³, 70.4% below the reference mean. With a Z-score of -1.61 (5.3th percentile), this represents moderate atrophy; hippocampal volume measures 7,311 mm³, 2.8% above the reference mean. With a Z-score of 0.25 (60.0th percentile), this represents normal volume ; whole brain volume measures 928,018 mm³, 4.8% below the reference mean. With a Z-score of -0.60 (27.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,625 mm³, 1.3% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume ; fusiform gyrus volume measures 14,730 mm³, 13.4% below the reference mean. With a Z-score of -1.22 (11.1th percentile), this represents mild atrophy; middle temporal gyrus volume measures 16,915 mm³, 11.8% below the reference mean. With a Z-score of -1.02 (15.4th percentile), this represents mild atrophy. ",
  "text_data": "Age is 79.3 years. Gender is Female. Education: 14 years. MMSE: 29.0. Logical Memory: 21.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate ventricular enlargement (suggesting some global atrophy) and mild atrophy in the fusiform gyrus and middle temporal gyrus, but hippocampal and entorhinal cortex volumes are normal. The MMSE score of 29 is intact, and there is no clear cognitive impairment reported. The APOE4 carrier status increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** Cognitively Normal (CN)  \n**Confidence:** Medium (due to mild atrophy in some regions but preserved cognition and key memory-related structures)",
  "timestamp": "2025-07-26T15:56:54.104788"
}