{
  "ptid_time": "021_S_0231_2006-09-12",
  "img_path": "/data/qiuhui/data/adni/images/021_S_0231/2006-09-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,760 mm³, 5.8% above the reference mean. With a Z-score of 0.14 (55.5th percentile), this represents normal volume ; hippocampal volume measures 7,887 mm³, 1.7% below the reference mean. With a Z-score of -0.17 (43.1th percentile), this represents normal volume ; whole brain volume measures 1,042,490 mm³, 8.1% below the reference mean. With a Z-score of -1.15 (12.5th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,527 mm³, 6.2% above the reference mean. With a Z-score of 0.43 (66.6th percentile), this represents normal volume ; fusiform gyrus volume measures 17,439 mm³, 12.4% below the reference mean. With a Z-score of -1.03 (15.1th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,880 mm³, 11.3% below the reference mean. With a Z-score of -0.93 (17.6th percentile), this represents normal volume . ",
  "text_data": "Age is 60.8 years. Gender is Male. Education: 18 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in whole brain and fusiform gyrus volumes, while hippocampal and other key regions remain within normal ranges. The MMSE score of 28 is within normal limits, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Mild atrophy in some regions could warrant monitoring, but no significant cognitive impairment is present.)",
  "timestamp": "2025-07-26T01:22:49.614856"
}