{
  "ptid_time": "137_S_4631_2012-12-13",
  "img_path": "/data/qiuhui/data/adni/images/137_S_4631/2012-12-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,936 mm³, 24.9% below the reference mean. With a Z-score of -0.60 (27.6th percentile), this represents normal volume ; hippocampal volume measures 8,301 mm³, 9.8% above the reference mean. With a Z-score of 0.96 (83.1th percentile), this represents normal volume ; whole brain volume measures 1,174,940 mm³, 8.9% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,533 mm³, 13.8% below the reference mean. With a Z-score of -0.94 (17.4th percentile), this represents normal volume ; fusiform gyrus volume measures 20,511 mm³, 8.9% above the reference mean. With a Z-score of 0.76 (77.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,524 mm³, 10.2% above the reference mean. With a Z-score of 0.92 (82.1th percentile), this represents normal volume . ",
  "text_data": "Age is 70.0 years. Gender is Male. Education: 20 years. MMSE: 27.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges or above average, with only the entorhinal cortex showing a mild reduction (13.8% below mean, Z-score -0.94). Cognitive scores (MMSE 27, MoCA 26) are within normal limits, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T16:39:12.521092"
}