{
  "ptid_time": "133_S_0771_2006-09-05",
  "img_path": "/data/qiuhui/data/adni/images/133_S_0771/2006-09-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,791 mm³, 24.0% above the reference mean. With a Z-score of 0.55 (70.8th percentile), this represents normal volume ; hippocampal volume measures 6,422 mm³, 9.7% below the reference mean. With a Z-score of -0.89 (18.6th percentile), this represents normal volume ; whole brain volume measures 982,832 mm³, 0.8% above the reference mean. With a Z-score of 0.11 (54.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,073 mm³, 16.3% below the reference mean. With a Z-score of -1.00 (15.8th percentile), this represents mild atrophy; fusiform gyrus volume measures 16,113 mm³, 5.3% below the reference mean. With a Z-score of -0.48 (31.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,486 mm³, 8.8% below the reference mean. With a Z-score of -0.76 (22.3th percentile), this represents normal volume . ",
  "text_data": "Age is 74.1 years. Gender is Female. Education: 19 years. MMSE: 28.0. Logical Memory: 4.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean but still within the normal range (Z-score -0.89). The entorhinal cortex shows mild atrophy (Z-score -1.00), but other regions, including whole brain and ventricular volumes, are normal. The MMSE score of 28 is within the normal range, and there is no APOE4 risk allele.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild entorhinal atrophy but otherwise normal findings)",
  "timestamp": "2025-07-26T15:25:24.195732"
}