{
  "ptid_time": "129_S_4220_2012-09-21",
  "img_path": "/data/qiuhui/data/adni/images/129_S_4220/2012-09-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,561 mm³, 19.6% below the reference mean. With a Z-score of -0.45 (32.7th percentile), this represents normal volume ; hippocampal volume measures 8,248 mm³, 15.9% above the reference mean. With a Z-score of 1.46 (92.8th percentile), this represents mild enlargement; whole brain volume measures 999,307 mm³, 2.5% above the reference mean. With a Z-score of 0.32 (62.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,700 mm³, 0.7% above the reference mean. With a Z-score of 0.05 (51.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,548 mm³, 2.7% below the reference mean. With a Z-score of -0.25 (40.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,901 mm³, 6.6% below the reference mean. With a Z-score of -0.57 (28.3th percentile), this represents normal volume . ",
  "text_data": "Age is 72.2 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 30, MoCA 27) are also within normal limits, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:14:18.960279"
}