{
  "ptid_time": "033_S_4505_2014-02-19",
  "img_path": "/data/qiuhui/data/adni/images/033_S_4505/2014-02-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,284 mm³, 1.8% below the reference mean. With a Z-score of -0.05 (48.0th percentile), this represents normal volume ; hippocampal volume measures 6,085 mm³, 6.3% below the reference mean. With a Z-score of -0.51 (30.6th percentile), this represents normal volume ; whole brain volume measures 888,845 mm³, 4.2% below the reference mean. With a Z-score of -0.51 (30.6th percentile), this represents normal volume ; entorhinal cortex volume measures 2,805 mm³, 19.0% below the reference mean. With a Z-score of -1.03 (15.3th percentile), this represents mild atrophy; fusiform gyrus volume measures 14,635 mm³, 9.2% below the reference mean. With a Z-score of -0.69 (24.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,842 mm³, 1.0% below the reference mean. With a Z-score of -0.09 (46.3th percentile), this represents normal volume . ",
  "text_data": "Age is 82.4 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 20.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ); Total tau: 399.40 pg/mL (significant elevated); Phosphorylated tau: 30.83 pg/mL (mild elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mild atrophy in the entorhinal cortex, but other regions (hippocampus, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges. Cognitive scores (MMSE, MoCA) are intact, but biomarkers (elevated T-tau and P-tau) suggest early neurodegenerative changes.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to intact cognition but biomarker abnormalities and mild entorhinal atrophy)",
  "timestamp": "2025-07-26T05:37:11.814466"
}