{
  "ptid_time": "129_S_6228_2018-02-20",
  "img_path": "/data/qiuhui/data/adni/images/129_S_6228/2018-02-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,446 mm³, 26.3% above the reference mean. With a Z-score of 0.60 (72.6th percentile), this represents normal volume ; hippocampal volume measures 6,909 mm³, 2.9% below the reference mean. With a Z-score of -0.26 (39.6th percentile), this represents normal volume ; whole brain volume measures 944,700 mm³, 3.1% below the reference mean. With a Z-score of -0.39 (34.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,923 mm³, 6.8% above the reference mean. With a Z-score of 0.42 (66.2th percentile), this represents normal volume ; fusiform gyrus volume measures 15,913 mm³, 6.5% below the reference mean. With a Z-score of -0.59 (27.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,954 mm³, 14.5% above the reference mean. With a Z-score of 1.26 (89.6th percentile), this represents mild enlargement. ",
  "text_data": "Age is 75.1 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 27.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.95 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild deviations (e.g., slightly reduced hippocampal and whole brain volumes, mild enlargement in the middle temporal gyrus). Cognitive scores (MMSE 30, MoCA 27) are intact, and there is no significant amyloid burden (AV45: mild reduced). No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:18:34.288048"
}