{
  "ptid_time": "941_S_5193_2019-06-19",
  "img_path": "/data/qiuhui/data/adni/images/941_S_5193/2019-06-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,556 mm³, 5.4% below the reference mean. With a Z-score of -0.12 (45.1th percentile), this represents normal volume ; hippocampal volume measures 6,734 mm³, 5.4% below the reference mean. With a Z-score of -0.49 (31.2th percentile), this represents normal volume ; whole brain volume measures 985,344 mm³, 1.1% above the reference mean. With a Z-score of 0.14 (55.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,239 mm³, 15.4% above the reference mean. With a Z-score of 0.95 (82.8th percentile), this represents normal volume ; fusiform gyrus volume measures 15,703 mm³, 7.7% below the reference mean. With a Z-score of -0.70 (24.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,622 mm³, 8.1% below the reference mean. With a Z-score of -0.70 (24.2th percentile), this represents normal volume . ",
  "text_data": "Age is 78.5 years. Gender is Female. Education: 16 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "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 28, MoCA 26) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:44:11.806432"
}