{
  "ptid_time": "012_S_5157_2015-06-24",
  "img_path": "/data/qiuhui/data/adni/images/012_S_5157/2015-06-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,134 mm³, 27.0% above the reference mean. With a Z-score of 0.64 (73.9th percentile), this represents normal volume ; hippocampal volume measures 8,444 mm³, 5.2% above the reference mean. With a Z-score of 0.52 (69.8th percentile), this represents normal volume ; whole brain volume measures 1,163,530 mm³, 2.6% above the reference mean. With a Z-score of 0.36 (64.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,616 mm³, 8.3% above the reference mean. With a Z-score of 0.57 (71.7th percentile), this represents normal volume ; fusiform gyrus volume measures 21,661 mm³, 8.8% above the reference mean. With a Z-score of 0.73 (76.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,850 mm³, 15.3% above the reference mean. With a Z-score of 1.26 (89.7th percentile), this represents mild enlargement. ",
  "text_data": "Age is 67.5 years. Gender is Male. Education: 17 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.96 SUVR (normal ); Amyloid beta: 1338.00 pg/mL (normal ); Total tau: 170.80 pg/mL (normal ); Phosphorylated tau: 14.94 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within or above the reference range, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 29) are intact, and biomarkers (Aβ, T-tau, P-tau, AV45) are normal. No evidence of neurodegeneration or amyloid pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:17:50.399582"
}