{
  "ptid_time": "003_S_5130_2019-12-06",
  "img_path": "/data/qiuhui/data/adni/images/003_S_5130/2019-12-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 50,000 mm³, 29.8% above the reference mean. With a Z-score of 0.71 (76.2th percentile), this represents normal volume ; hippocampal volume measures 7,496 mm³, 0.8% below the reference mean. With a Z-score of -0.08 (46.7th percentile), this represents normal volume ; whole brain volume measures 1,033,580 mm³, 4.2% below the reference mean. With a Z-score of -0.55 (29.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,213 mm³, 2.7% above the reference mean. With a Z-score of 0.19 (57.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,154 mm³, 8.9% below the reference mean. With a Z-score of -0.76 (22.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,072 mm³, 10.6% below the reference mean. With a Z-score of -0.95 (17.0th percentile), this represents normal volume . ",
  "text_data": "Age is 72.8 years. Gender is Male. Education: 17 years. MMSE: 28.0. MoCA: 25.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE: 28, MoCA: 25) are within normal limits for age, and amyloid PET (AV45) is normal. The presence of one APOE4 allele does not override the absence of structural or cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:58:01.147510"
}