{
  "ptid_time": "073_S_0089_2013-11-22",
  "img_path": "/data/qiuhui/data/adni/images/073_S_0089/2013-11-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,905 mm³, 35.3% below the reference mean. With a Z-score of -0.85 (19.9th percentile), this represents normal volume ; hippocampal volume measures 7,588 mm³, 0.4% above the reference mean. With a Z-score of 0.04 (51.5th percentile), this represents normal volume ; whole brain volume measures 1,046,620 mm³, 3.0% below the reference mean. With a Z-score of -0.39 (34.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,240 mm³, 3.4% above the reference mean. With a Z-score of 0.23 (59.1th percentile), this represents normal volume ; fusiform gyrus volume measures 22,381 mm³, 18.8% above the reference mean. With a Z-score of 1.60 (94.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,802 mm³, 6.9% above the reference mean. With a Z-score of 0.62 (73.1th percentile), this represents normal volume . ",
  "text_data": "Age is 73.1 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges or slightly above, with only the fusiform gyrus showing moderate enlargement. Cognitive scores (MMSE 30, MoCA 26) are within normal limits for age, and there is no APOE4 risk allele. No significant atrophy or biomarker abnormalities suggest neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:29:14.070207"
}