{
  "ptid_time": "032_S_4429_2017-12-11",
  "img_path": "/data/qiuhui/data/adni/images/032_S_4429/2017-12-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,328 mm³, 13.4% above the reference mean. With a Z-score of 0.39 (65.2th percentile), this represents normal volume ; hippocampal volume measures 7,414 mm³, 6.4% above the reference mean. With a Z-score of 0.55 (71.0th percentile), this represents normal volume ; whole brain volume measures 1,080,500 mm³, 5.0% above the reference mean. With a Z-score of 0.65 (74.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,108 mm³, 3.5% above the reference mean. With a Z-score of 0.23 (59.1th percentile), this represents normal volume ; fusiform gyrus volume measures 20,084 mm³, 11.2% above the reference mean. With a Z-score of 0.97 (83.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,686 mm³, 17.4% above the reference mean. With a Z-score of 1.56 (94.1th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 83.0 years. Gender is Male. Education: 14 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.14 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges or even above the reference mean, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 28) are intact, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:05:38.595239"
}