{
  "ptid_time": "136_S_0873_2007-10-26",
  "img_path": "/data/qiuhui/data/adni/images/136_S_0873/2007-10-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,597 mm³, 23.3% above the reference mean. With a Z-score of 0.53 (70.3th percentile), this represents normal volume ; hippocampal volume measures 5,612 mm³, 21.1% below the reference mean. With a Z-score of -1.94 (2.6th percentile), this represents moderate atrophy; whole brain volume measures 827,989 mm³, 15.0% below the reference mean. With a Z-score of -1.89 (2.9th percentile), this represents moderate atrophy; entorhinal cortex volume measures 2,585 mm³, 29.6% below the reference mean. With a Z-score of -1.82 (3.5th percentile), this represents moderate atrophy; fusiform gyrus volume measures 10,896 mm³, 36.0% below the reference mean. With a Z-score of -3.27 (0.1th percentile), this represents profound atrophy; middle temporal gyrus volume measures 17,088 mm³, 10.9% below the reference mean. With a Z-score of -0.94 (17.3th percentile), this represents normal volume . ",
  "text_data": "Age is 79.1 years. Gender is Female. Education: 14 years. MMSE: 23.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows significant atrophy in key Alzheimer's-related regions (hippocampus, entorhinal cortex, fusiform gyrus) with Z-scores well below the mean, alongside a low MMSE score of 23. The fusiform gyrus atrophy is particularly severe (Z-score -3.27), which is strongly associated with Alzheimer's pathology. The combination of structural changes and cognitive impairment suggests dementia rather than MCI.  \nDiagnosis: Dementia  \nConfidence:",
  "timestamp": "2025-07-26T16:04:03.303441"
}