{
  "ptid_time": "003_S_4555_2013-05-21",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4555/2013-05-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,452 mm³, 27.4% above the reference mean. With a Z-score of 0.69 (75.3th percentile), this represents normal volume ; hippocampal volume measures 8,280 mm³, 7.7% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; whole brain volume measures 1,080,560 mm³, 5.0% above the reference mean. With a Z-score of 0.62 (73.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,459 mm³, 11.1% below the reference mean. With a Z-score of -0.86 (19.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,788 mm³, 3.2% above the reference mean. With a Z-score of 0.36 (64.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,011 mm³, 7.4% below the reference mean. With a Z-score of -0.65 (25.7th percentile), this represents normal volume . ",
  "text_data": "Age is 66.8 years. Gender is Female. Education: 15 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 30, MoCA 27) are within normal limits, and APOE4 status (heterozygous) does not independently indicate impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:54:55.044593"
}