{
  "ptid_time": "002_S_4799_2018-06-14",
  "img_path": "/data/qiuhui/data/adni/images/002_S_4799/2018-06-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 50,726 mm³, 31.7% above the reference mean. With a Z-score of 0.76 (77.6th percentile), this represents normal volume ; hippocampal volume measures 7,717 mm³, 2.1% above the reference mean. With a Z-score of 0.20 (58.1th percentile), this represents normal volume ; whole brain volume measures 1,176,120 mm³, 9.0% above the reference mean. With a Z-score of 1.16 (87.8th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,785 mm³, 16.7% above the reference mean. With a Z-score of 1.13 (87.1th percentile), this represents mild enlargement; fusiform gyrus volume measures 21,889 mm³, 16.2% above the reference mean. With a Z-score of 1.38 (91.6th percentile), this represents mild enlargement; middle temporal gyrus volume measures 25,517 mm³, 19.6% above the reference mean. With a Z-score of 1.76 (96.1th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 74.0 years. Gender is Male. Education: 14 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are above the reference mean, with some regions showing mild to moderate enlargement. Cognitive scores (MMSE 30, MoCA 26) are within normal limits for age, and there is no APOE4 risk allele. No structural atrophy or cognitive impairment is evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:32:35.620783"
}