{
  "ptid_time": "941_S_4187_2013-09-04",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4187/2013-09-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,943 mm³, 46.9% below the reference mean. With a Z-score of -1.11 (13.3th percentile), this represents mild atrophy; hippocampal volume measures 8,492 mm³, 5.8% above the reference mean. With a Z-score of 0.58 (71.9th percentile), this represents normal volume ; whole brain volume measures 1,288,560 mm³, 13.6% above the reference mean. With a Z-score of 1.92 (97.3th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,649 mm³, 9.1% above the reference mean. With a Z-score of 0.63 (73.5th percentile), this represents normal volume ; fusiform gyrus volume measures 25,745 mm³, 29.3% above the reference mean. With a Z-score of 2.44 (99.3th percentile), this represents significant enlargement; middle temporal gyrus volume measures 24,711 mm³, 10.3% above the reference mean. With a Z-score of 0.85 (80.1th percentile), this represents normal volume . ",
  "text_data": "Age is 64.0 years. Gender is Male. Education: 16 years. MMSE: 26.0. MoCA: 26.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ); Amyloid beta: 1056.00 pg/mL (normal ); Total tau: 221.60 pg/mL (normal ); Phosphorylated tau: 19.23 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal or enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 26, MoCA 26) are within normal limits, and biomarkers (Aβ, tau, AV45) are normal, with no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T17:35:23.490023"
}