{
  "ptid_time": "129_S_6457_2018-06-27",
  "img_path": "/data/qiuhui/data/adni/images/129_S_6457/2018-06-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,958 mm³, 9.2% below the reference mean. With a Z-score of -0.22 (41.2th percentile), this represents normal volume ; hippocampal volume measures 7,356 mm³, 2.7% below the reference mean. With a Z-score of -0.26 (39.6th percentile), this represents normal volume ; whole brain volume measures 1,104,000 mm³, 2.3% above the reference mean. With a Z-score of 0.30 (61.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,214 mm³, 2.8% above the reference mean. With a Z-score of 0.19 (57.4th percentile), this represents normal volume ; fusiform gyrus volume measures 20,763 mm³, 10.2% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,837 mm³, 2.3% above the reference mean. With a Z-score of 0.21 (58.3th percentile), this represents normal volume . ",
  "text_data": "Age is 74.6 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. MMSE: 29.0. MoCA: 27.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores close to zero or slightly above. Cognitive scores (MMSE 29, MoCA 27) are also within normal limits, and there is no evidence of amyloid pathology (AV45 normal). APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:19:45.857413"
}