{
  "ptid_time": "032_S_2119_2012-10-22",
  "img_path": "/data/qiuhui/data/adni/images/032_S_2119/2012-10-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,175 mm³, 1.7% above the reference mean. With a Z-score of 0.04 (51.6th percentile), this represents normal volume ; hippocampal volume measures 7,039 mm³, 6.9% below the reference mean. With a Z-score of -0.67 (25.1th percentile), this represents normal volume ; whole brain volume measures 1,083,480 mm³, 0.4% above the reference mean. With a Z-score of 0.05 (52.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,817 mm³, 6.9% below the reference mean. With a Z-score of -0.47 (32.0th percentile), this represents normal volume ; fusiform gyrus volume measures 19,803 mm³, 5.1% above the reference mean. With a Z-score of 0.44 (66.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,692 mm³, 3.0% below the reference mean. With a Z-score of -0.27 (39.3th percentile), this represents normal volume . ",
  "text_data": "Age is 73.7 years. Gender is Male. Education: 12 years. MMSE: 28.0. MoCA: 22.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.13 SUVR (normal ); Total tau: 307.00 pg/mL (normal ); Phosphorylated tau: 23.66 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (including hippocampal and entorhinal cortex) are within normal ranges, though some structures are slightly below the mean. The MMSE score (28/30) is normal, but the MoCA (22/30) suggests mild cognitive impairment. Biomarkers (T-tau, P-tau, AV45) are normal, and the patient is APOE4-negative, reducing Alzheimer’s risk.  \n\n**Diagnosis:** **MCI (Mild Cognitive Impairment)**  \n**Confidence:** **Medium** (MoCA indicates possible impairment, but structural and biomarker findings do not strongly support dementia.)",
  "timestamp": "2025-07-26T05:01:55.601046"
}