{
  "ptid_time": "033_S_1309_2008-08-25",
  "img_path": "/data/qiuhui/data/adni/images/033_S_1309/2008-08-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,444 mm³, 33.4% above the reference mean. With a Z-score of 0.76 (77.8th percentile), this represents normal volume ; hippocampal volume measures 5,168 mm³, 27.4% below the reference mean. With a Z-score of -2.51 (0.6th percentile), this represents significant atrophy; whole brain volume measures 1,011,810 mm³, 3.8% above the reference mean. With a Z-score of 0.48 (68.4th percentile), this represents normal volume ; entorhinal cortex volume measures 2,378 mm³, 35.3% below the reference mean. With a Z-score of -2.16 (1.5th percentile), this represents significant atrophy; fusiform gyrus volume measures 18,310 mm³, 7.6% above the reference mean. With a Z-score of 0.69 (75.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,152 mm³, 5.3% below the reference mean. With a Z-score of -0.46 (32.2th percentile), this represents normal volume . ",
  "text_data": "Age is 70.6 years. Gender is Female. Education: 16 years. MMSE: 28.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows significant atrophy in the hippocampus (Z-score -2.51) and entorhinal cortex (Z-score -2.16), both key regions affected in Alzheimer's disease. Despite normal MMSE (28/30), the structural changes suggest early neurodegeneration, likely MCI given preserved global cognition.  \nDiagnosis: MCI  \nConfidence: Medium (due to high atrophy in AD-vulnerable regions but preserved MMSE)",
  "timestamp": "2025-07-26T05:34:55.068836"
}