{
  "ptid_time": "082_S_0304_2006-04-06",
  "img_path": "/data/qiuhui/data/adni/images/082_S_0304/2006-04-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,288 mm³, 0.8% above the reference mean. With a Z-score of 0.02 (50.7th percentile), this represents normal volume ; hippocampal volume measures 8,771 mm³, 23.3% above the reference mean. With a Z-score of 2.14 (98.4th percentile), this represents significant enlargement; whole brain volume measures 1,194,110 mm³, 22.5% above the reference mean. With a Z-score of 2.83 (99.8th percentile), this represents significant enlargement; entorhinal cortex volume measures 3,808 mm³, 3.7% above the reference mean. With a Z-score of 0.23 (58.9th percentile), this represents normal volume ; fusiform gyrus volume measures 17,587 mm³, 3.4% above the reference mean. With a Z-score of 0.31 (62.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,708 mm³, 13.2% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 70.8 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 29.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows significant enlargement in hippocampal and whole brain volumes, with normal or mildly enlarged volumes in other regions. The MMSE score of 29 is within the normal range, and the absence of APOE4 alleles reduces genetic risk. These findings suggest no significant neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:55:20.710246"
}