{
  "ptid_time": "100_S_0035_2005-10-20",
  "img_path": "/data/qiuhui/data/adni/images/100_S_0035/2005-10-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,877 mm³, 40.6% below the reference mean. With a Z-score of -0.97 (16.5th percentile), this represents normal volume ; hippocampal volume measures 6,815 mm³, 9.8% below the reference mean. With a Z-score of -0.96 (16.8th percentile), this represents normal volume ; whole brain volume measures 1,051,430 mm³, 2.6% below the reference mean. With a Z-score of -0.34 (36.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,460 mm³, 15.6% below the reference mean. With a Z-score of -1.06 (14.5th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,317 mm³, 2.8% below the reference mean. With a Z-score of -0.24 (40.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,232 mm³, 4.2% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume . ",
  "text_data": "Age is 76.9 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Hematopoietic-Lymphatic; Renal-Genitourinary; Allergies or Drug Sensitivities; Malignancy; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show mostly normal values, with only mild atrophy in the entorhinal cortex (Z-score -1.06, 14.5th percentile). The hippocampal volume is within normal limits (Z-score -0.96), and the MMSE score of 30 indicates no cognitive impairment. The absence of APOE4 alleles further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T11:14:53.898987"
}