{
  "ptid_time": "941_S_4420_2012-12-21",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4420/2012-12-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,838 mm³, 2.5% below the reference mean. With a Z-score of -0.07 (47.1th percentile), this represents normal volume ; hippocampal volume measures 7,442 mm³, 6.8% above the reference mean. With a Z-score of 0.59 (72.2th percentile), this represents normal volume ; whole brain volume measures 1,124,920 mm³, 9.3% above the reference mean. With a Z-score of 1.22 (88.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,315 mm³, 8.7% above the reference mean. With a Z-score of 0.57 (71.6th percentile), this represents normal volume ; fusiform gyrus volume measures 16,265 mm³, 10.0% below the reference mean. With a Z-score of -0.86 (19.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,135 mm³, 10.1% below the reference mean. With a Z-score of -0.91 (18.3th percentile), this represents normal volume . ",
  "text_data": "Age is 81.9 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges or mildly enlarged, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 29, MoCA 25) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:42:31.139526"
}