{
  "ptid_time": "099_S_4076_2012-01-04",
  "img_path": "/data/qiuhui/data/adni/images/099_S_4076/2012-01-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,950 mm³, 10.3% above the reference mean. With a Z-score of 0.24 (59.3th percentile), this represents normal volume ; hippocampal volume measures 7,252 mm³, 1.9% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; whole brain volume measures 992,418 mm³, 1.8% above the reference mean. With a Z-score of 0.23 (59.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,647 mm³, 0.7% below the reference mean. With a Z-score of -0.04 (48.3th percentile), this represents normal volume ; fusiform gyrus volume measures 20,046 mm³, 17.8% above the reference mean. With a Z-score of 1.62 (94.8th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 18,059 mm³, 5.8% below the reference mean. With a Z-score of -0.50 (30.8th percentile), this represents normal volume . ",
  "text_data": "Age is 73.1 years. Gender is Female. Education: 20 years. MMSE: 29.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, and middle temporal gyrus) are within normal ranges, with only the fusiform gyrus showing moderate enlargement (likely not clinically significant). Cognitive scores (MMSE 29, MoCA 26) are normal for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:04:34.604864"
}