{
  "ptid_time": "073_S_4312_2016-01-13",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4312/2016-01-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,719 mm³, 30.6% below the reference mean. With a Z-score of -0.73 (23.2th percentile), this represents normal volume ; hippocampal volume measures 7,150 mm³, 5.4% below the reference mean. With a Z-score of -0.53 (29.9th percentile), this represents normal volume ; whole brain volume measures 1,042,610 mm³, 3.4% below the reference mean. With a Z-score of -0.44 (32.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,473 mm³, 9.1% above the reference mean. With a Z-score of 0.62 (73.1th percentile), this represents normal volume ; fusiform gyrus volume measures 18,528 mm³, 1.6% below the reference mean. With a Z-score of -0.14 (44.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,258 mm³, 4.3% above the reference mean. With a Z-score of 0.39 (65.1th percentile), this represents normal volume . ",
  "text_data": "Age is 73.3 years. Gender is Male. Education: 17 years. MMSE: 27.0. MoCA: 25.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.09 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 27, MoCA 25) are within normal limits for age, and amyloid PET (AV45) is normal. The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:43:50.747246"
}