{
  "ptid_time": "007_S_1222_2007-01-19",
  "img_path": "/data/qiuhui/data/adni/images/007_S_1222/2007-01-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,883 mm³, 39.8% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; hippocampal volume measures 7,211 mm³, 1.4% above the reference mean. With a Z-score of 0.12 (54.9th percentile), this represents normal volume ; whole brain volume measures 931,814 mm³, 4.4% below the reference mean. With a Z-score of -0.55 (29.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,126 mm³, 14.9% below the reference mean. With a Z-score of -0.91 (18.0th percentile), this represents normal volume ; fusiform gyrus volume measures 16,441 mm³, 3.4% below the reference mean. With a Z-score of -0.31 (38.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,134 mm³, 5.4% below the reference mean. With a Z-score of -0.47 (32.0th percentile), this represents normal volume . ",
  "text_data": "Age is 73.4 years. Gender is Female. Education: 16 years. Handedness: Right. Race: Black or African American. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Musculoskeletal; Hematopoietic-Lymphatic; Smoking; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:53:34.944237"
}