{
  "ptid_time": "009_S_2208_2013-01-10",
  "img_path": "/data/qiuhui/data/adni/images/009_S_2208/2013-01-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,785 mm³, 30.5% below the reference mean. With a Z-score of -0.73 (23.3th percentile), this represents normal volume ; hippocampal volume measures 8,693 mm³, 15.0% above the reference mean. With a Z-score of 1.46 (92.8th percentile), this represents mild enlargement; whole brain volume measures 1,062,460 mm³, 1.6% below the reference mean. With a Z-score of -0.20 (41.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,689 mm³, 10.0% below the reference mean. With a Z-score of -0.68 (24.8th percentile), this represents normal volume ; fusiform gyrus volume measures 17,739 mm³, 5.8% below the reference mean. With a Z-score of -0.50 (31.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,859 mm³, 6.9% below the reference mean. With a Z-score of -0.62 (26.6th percentile), this represents normal volume . ",
  "text_data": "Age is 70.8 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 0.97 SUVR (normal ). ",
  "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 (which is actually mildly enlarged). Cognitive scores (MMSE 30, MoCA 28) are intact, and amyloid PET (AV45) is normal. APOE4 carrier status is present but not currently associated with pathological changes.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:16:36.804270"
}