{
  "ptid_time": "014_S_6076_2018-11-14",
  "img_path": "/data/qiuhui/data/adni/images/014_S_6076/2018-11-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,266 mm³, 7.3% below the reference mean. With a Z-score of -0.21 (41.7th percentile), this represents normal volume ; hippocampal volume measures 8,274 mm³, 6.0% above the reference mean. With a Z-score of 0.83 (79.7th percentile), this represents normal volume ; whole brain volume measures 1,116,190 mm³, 7.3% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,042 mm³, 9.4% above the reference mean. With a Z-score of 0.73 (76.8th percentile), this represents normal volume ; fusiform gyrus volume measures 19,799 mm³, 7.4% above the reference mean. With a Z-score of 0.67 (75.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,880 mm³, 3.2% below the reference mean. With a Z-score of -0.26 (39.7th percentile), this represents normal volume . ",
  "text_data": "Age is 59.7 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 17.0. 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) are within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE 30, MoCA 27) are also within normal limits, with no significant impairment detected. The presence of one APOE4 allele increases genetic risk but does not currently indicate pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:58:35.506647"
}