{
  "ptid_time": "941_S_6574_2018-09-07",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6574/2018-09-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,024 mm³, 3.4% above the reference mean. With a Z-score of 0.08 (53.1th percentile), this represents normal volume ; hippocampal volume measures 6,674 mm³, 6.2% below the reference mean. With a Z-score of -0.57 (28.5th percentile), this represents normal volume ; whole brain volume measures 956,467 mm³, 1.9% below the reference mean. With a Z-score of -0.23 (40.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,403 mm³, 7.3% below the reference mean. With a Z-score of -0.45 (32.6th percentile), this represents normal volume ; fusiform gyrus volume measures 20,145 mm³, 18.4% above the reference mean. With a Z-score of 1.68 (95.3th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 19,832 mm³, 3.5% above the reference mean. With a Z-score of 0.30 (61.8th percentile), this represents normal volume . ",
  "text_data": "Age is 73.5 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. MMSE: 28.0. MoCA: 27.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.00 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild deviations (e.g., hippocampal volume 6.2% below mean, entorhinal cortex 7.3% below mean). Cognitive scores (MMSE 28, MoCA 27) are intact, and there is no APOE4 risk allele. No significant atrophy or biomarker evidence suggests neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:49:37.519333"
}