{
  "ptid_time": "052_S_1352_2013-03-22",
  "img_path": "/data/qiuhui/data/adni/images/052_S_1352/2013-03-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,141 mm³, 9.7% below the reference mean. With a Z-score of -0.88 (19.0th percentile), this represents normal volume ; hippocampal volume measures 6,335 mm³, 0.5% below the reference mean. With a Z-score of -0.06 (47.7th percentile), this represents normal volume ; whole brain volume measures 974,866 mm³, 2.7% below the reference mean. With a Z-score of -0.46 (32.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,335 mm³, 9.6% above the reference mean. With a Z-score of 0.50 (69.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,678 mm³, 4.9% above the reference mean. With a Z-score of 0.56 (71.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,552 mm³, 12.2% below the reference mean. With a Z-score of -1.87 (3.0th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 91.9 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 23.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ); Total tau: 284.00 pg/mL (normal ); Phosphorylated tau: 23.40 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal volumes in most regions, except for moderate atrophy in the middle temporal gyrus (Z-score -1.87, 3.0th percentile). The MMSE score (29/30) is normal, but the MoCA (23/30) suggests mild cognitive impairment. Biomarkers (T-tau, P-tau, AV45) are normal, and there is no APOE4 risk allele.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to the discrepancy between MMSE and MoCA, along with isolated temporal atrophy but otherwise normal biomarkers and volumes)",
  "timestamp": "2025-07-26T07:48:09.107139"
}