{
  "ptid_time": "067_S_4184_2013-09-12",
  "img_path": "/data/qiuhui/data/adni/images/067_S_4184/2013-09-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,341 mm³, 9.0% above the reference mean. With a Z-score of 0.22 (58.9th percentile), this represents normal volume ; hippocampal volume measures 7,096 mm³, 7.7% below the reference mean. With a Z-score of -0.86 (19.5th percentile), this represents normal volume ; whole brain volume measures 1,033,550 mm³, 0.4% above the reference mean. With a Z-score of 0.05 (52.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,873 mm³, 25.2% above the reference mean. With a Z-score of 1.95 (97.4th percentile), this represents moderate enlargement; fusiform gyrus volume measures 17,357 mm³, 4.7% below the reference mean. With a Z-score of -0.53 (29.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,303 mm³, 10.8% below the reference mean. With a Z-score of -0.96 (16.9th percentile), this represents normal volume . ",
  "text_data": "Age is 64.3 years. Gender is Female. Education: 20 years. MMSE: 29.0. MoCA: 29.0. Logical Memory: 22.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean (Z-score -0.86, 19.5th percentile), but still within the normal range. All other brain volumes, including whole brain and ventricular volumes, are normal or even enlarged (entorhinal cortex). Cognitive scores (MMSE 29, MoCA 29) are intact, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T08:37:47.087376"
}