{
  "ptid_time": "094_S_4503_2012-09-27",
  "img_path": "/data/qiuhui/data/adni/images/094_S_4503/2012-09-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,008 mm³, 31.9% above the reference mean. With a Z-score of 0.73 (76.7th percentile), this represents normal volume ; hippocampal volume measures 7,193 mm³, 1.1% above the reference mean. With a Z-score of 0.10 (54.0th percentile), this represents normal volume ; whole brain volume measures 1,039,460 mm³, 6.6% above the reference mean. With a Z-score of 0.84 (79.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,486 mm³, 5.1% below the reference mean. With a Z-score of -0.31 (37.7th percentile), this represents normal volume ; fusiform gyrus volume measures 21,313 mm³, 25.3% above the reference mean. With a Z-score of 2.30 (98.9th percentile), this represents significant enlargement; middle temporal gyrus volume measures 21,706 mm³, 13.2% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 72.2 years. Gender is Female. Education: 19 years. MMSE: 29.0. MoCA: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within normal ranges, with only mild deviations (e.g., fusiform gyrus enlargement, entorhinal cortex slightly below mean). Cognitive scores (MMSE 29, MoCA 27) are intact, and there is no APOE4 risk allele. No significant atrophy or biomarker evidence of neurodegeneration is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:31:22.600099"
}