{
  "ptid_time": "135_S_4489_2014-02-04",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4489/2014-02-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,713 mm³, 25.5% below the reference mean. With a Z-score of -0.61 (27.1th percentile), this represents normal volume ; hippocampal volume measures 7,875 mm³, 4.2% above the reference mean. With a Z-score of 0.41 (65.8th percentile), this represents normal volume ; whole brain volume measures 1,103,890 mm³, 2.3% above the reference mean. With a Z-score of 0.29 (61.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,314 mm³, 19.2% below the reference mean. With a Z-score of -1.30 (9.7th percentile), this represents mild atrophy; fusiform gyrus volume measures 19,759 mm³, 4.9% above the reference mean. With a Z-score of 0.42 (66.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,751 mm³, 11.3% above the reference mean. With a Z-score of 1.02 (84.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 76.2 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 29.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.20 SUVR (normal ); Amyloid beta: 1146.00 pg/mL (normal ); Total tau: 229.60 pg/mL (normal ); Phosphorylated tau: 19.76 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with mild atrophy only in the entorhinal cortex (Z-score -1.30, 9.7th percentile). Cognitive scores (MMSE 29, MoCA 29) are intact, and biomarkers (Aβ, tau, AV45) are normal, ruling out significant amyloid or tau pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:37:12.432913"
}