{
  "ptid_time": "041_S_0679_2019-05-01",
  "img_path": "/data/qiuhui/data/adni/images/041_S_0679/2019-05-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,808 mm³, 17.4% below the reference mean. With a Z-score of -0.42 (33.8th percentile), this represents normal volume ; hippocampal volume measures 7,583 mm³, 0.3% above the reference mean. With a Z-score of 0.03 (51.2th percentile), this represents normal volume ; whole brain volume measures 1,113,920 mm³, 3.2% above the reference mean. With a Z-score of 0.42 (66.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,711 mm³, 14.9% above the reference mean. With a Z-score of 1.01 (84.4th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,499 mm³, 8.8% above the reference mean. With a Z-score of 0.75 (77.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,924 mm³, 7.4% above the reference mean. With a Z-score of 0.67 (74.8th percentile), this represents normal volume . ",
  "text_data": "Age is 75.4 years. Gender is Male. Education: 18 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.19 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges or mildly enlarged, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 27) are normal, and amyloid PET (AV45) is negative. APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T07:01:18.139654"
}