{
  "ptid_time": "033_S_0920_2006-09-22",
  "img_path": "/data/qiuhui/data/adni/images/033_S_0920/2006-09-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,928 mm³, 18.8% above the reference mean. With a Z-score of 0.51 (69.4th percentile), this represents normal volume ; hippocampal volume measures 6,272 mm³, 3.4% below the reference mean. With a Z-score of -0.28 (39.2th percentile), this represents normal volume ; whole brain volume measures 946,606 mm³, 2.0% above the reference mean. With a Z-score of 0.24 (59.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,203 mm³, 7.5% below the reference mean. With a Z-score of -0.40 (34.3th percentile), this represents normal volume ; fusiform gyrus volume measures 15,382 mm³, 4.5% below the reference mean. With a Z-score of -0.34 (36.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,934 mm³, 6.1% below the reference mean. With a Z-score of -0.54 (29.4th percentile), this represents normal volume . ",
  "text_data": "Age is 80.0 years. Gender is Female. Education: 12 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Musculoskeletal; Endocrine-Metabolic; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures fall within normal ranges (Z-scores between -0.54 and 0.51), with no significant atrophy. The MMSE score of 30 is optimal, and while APOE4 is a risk factor, there are no clinical or structural signs of cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:22:13.745185"
}