{
  "ptid_time": "128_S_0200_2007-09-13",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0200/2007-09-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,867 mm³, 57.1% below the reference mean. With a Z-score of -1.36 (8.7th percentile), this represents mild atrophy; hippocampal volume measures 9,396 mm³, 17.1% above the reference mean. With a Z-score of 1.70 (95.6th percentile), this represents moderate enlargement; whole brain volume measures 1,215,370 mm³, 7.1% above the reference mean. With a Z-score of 1.01 (84.3th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,192 mm³, 1.7% below the reference mean. With a Z-score of -0.12 (45.4th percentile), this represents normal volume ; fusiform gyrus volume measures 21,070 mm³, 5.8% above the reference mean. With a Z-score of 0.48 (68.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,845 mm³, 2.5% below the reference mean. With a Z-score of -0.21 (41.8th percentile), this represents normal volume . ",
  "text_data": "Age is 62.9 years. Gender is Male. Education: 16 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows mild ventricular atrophy (Z-score -1.36) but otherwise normal or enlarged brain volumes, including hippocampal enlargement (Z-score 1.70). The MMSE score of 28 is within the normal range, and there is no APOE4 risk allele. No significant atrophy is seen in Alzheimer’s-related regions (entorhinal cortex, fusiform gyrus, middle temporal gyrus).  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:36:02.684570"
}