{
  "ptid_time": "037_S_4381_2014-03-21",
  "img_path": "/data/qiuhui/data/adni/images/037_S_4381/2014-03-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,761 mm³, 27.6% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume ; hippocampal volume measures 8,214 mm³, 5.2% above the reference mean. With a Z-score of 0.72 (76.5th percentile), this represents normal volume ; whole brain volume measures 996,248 mm³, 4.3% below the reference mean. With a Z-score of -0.51 (30.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,560 mm³, 3.7% below the reference mean. With a Z-score of -0.29 (38.7th percentile), this represents normal volume ; fusiform gyrus volume measures 16,499 mm³, 10.5% below the reference mean. With a Z-score of -0.95 (17.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,473 mm³, 14.9% below the reference mean. With a Z-score of -1.23 (11.0th percentile), this represents mild atrophy. ",
  "text_data": "Age is 57.0 years. Gender is Female. Education: 17 years. MMSE: 29.0. MoCA: 29.0. Logical Memory: 9.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ); Total tau: 207.80 pg/mL (normal ); Phosphorylated tau: 17.74 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within normal ranges, with only mild atrophy noted in the middle temporal gyrus. Cognitive scores (MMSE and MoCA) are intact, and biomarkers (T-tau, P-tau, AV45) are normal. The presence of one APOE4 allele increases genetic risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild temporal atrophy, but strong cognitive performance and normal biomarkers suggest no significant impairment)",
  "timestamp": "2025-07-26T06:45:46.872621"
}