{
  "ptid_time": "116_S_4043_2018-03-02",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4043/2018-03-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,783 mm³, 11.1% below the reference mean. With a Z-score of -0.32 (37.3th percentile), this represents normal volume ; hippocampal volume measures 7,606 mm³, 9.1% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume ; whole brain volume measures 1,042,810 mm³, 1.3% above the reference mean. With a Z-score of 0.17 (56.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,929 mm³, 24.2% above the reference mean. With a Z-score of 1.58 (94.3th percentile), this represents moderate enlargement; fusiform gyrus volume measures 18,511 mm³, 2.5% above the reference mean. With a Z-score of 0.21 (58.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,060 mm³, 0.6% below the reference mean. With a Z-score of -0.05 (48.0th percentile), this represents normal volume . ",
  "text_data": "Age is 88.6 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.95 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within normal ranges, with the exception of the entorhinal cortex, which shows moderate enlargement. Cognitive scores (MMSE 29, MoCA 25) are within normal limits for age, and there is no significant amyloid burden (AV45: mild reduced). APOE4-negative status further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:06:45.164747"
}