{
  "ptid_time": "073_S_4762_2013-09-04",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4762/2013-09-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,140 mm³, 14.0% below the reference mean. With a Z-score of -0.33 (36.9th percentile), this represents normal volume ; hippocampal volume measures 7,347 mm³, 2.8% below the reference mean. With a Z-score of -0.27 (39.2th percentile), this represents normal volume ; whole brain volume measures 969,348 mm³, 10.2% below the reference mean. With a Z-score of -1.32 (9.3th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,095 mm³, 24.5% below the reference mean. With a Z-score of -1.66 (4.8th percentile), this represents moderate atrophy; fusiform gyrus volume measures 16,246 mm³, 13.8% below the reference mean. With a Z-score of -1.17 (12.1th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,636 mm³, 3.3% below the reference mean. With a Z-score of -0.30 (38.4th percentile), this represents normal volume . ",
  "text_data": "Age is 74.8 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 22.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows mild to moderate atrophy in whole brain, entorhinal cortex, and fusiform gyrus volumes, which are regions commonly affected in Alzheimer's disease. However, hippocampal volume is normal, and cognitive scores (MMSE 28, MoCA 22) are borderline for MCI but not dementia. The absence of APOE4 reduces genetic risk.  \n\nDiagnosis: Mild Cognitive Impairment (MCI)  \nConfidence: Medium",
  "timestamp": "2025-07-26T09:51:56.989509"
}