{
  "ptid_time": "036_S_2378_2011-05-26",
  "img_path": "/data/qiuhui/data/adni/images/036_S_2378/2011-05-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,613 mm³, 18.4% above the reference mean. With a Z-score of 0.24 (59.6th percentile), this represents normal volume ; hippocampal volume measures 8,957 mm³.; whole brain volume measures 1,283,090 mm³, 7.6% above the reference mean. With a Z-score of 1.41 (92.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,965 mm³, 1.0% below the reference mean. With a Z-score of -0.08 (46.7th percentile), this represents normal volume ; fusiform gyrus volume measures 25,930 mm³, 24.4% above the reference mean. With a Z-score of 3.71 (100.0th percentile), this represents profound enlargement; middle temporal gyrus volume measures 26,195 mm³.. ",
  "text_data": "Age is 59.9 years. Gender is Male. Education: 19 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 15.0. Laboratory findings: . APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ); Amyloid beta: 1327.00 pg/mL (normal ); Total tau: 198.70 pg/mL (normal ); Phosphorylated tau: 18.65 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in most regions, including the hippocampus and entorhinal cortex, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 26) are within normal limits, and biomarkers (Aβ, tau, AV45) are normal, ruling out significant Alzheimer's pathology. The MoCA score of 26 is slightly below the typical cutoff (≥26), but this alone is insufficient for MCI diagnosis without functional impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T06:10:24.215529"
}