{
  "ptid_time": "002_S_2043_2011-09-16",
  "img_path": "/data/qiuhui/data/adni/images/002_S_2043/2011-09-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,784 mm³, 33.1% below the reference mean. With a Z-score of -0.76 (22.4th percentile), this represents normal volume ; hippocampal volume measures 7,288 mm³, 2.4% above the reference mean. With a Z-score of 0.22 (58.8th percentile), this represents normal volume ; whole brain volume measures 1,006,980 mm³, 3.3% above the reference mean. With a Z-score of 0.42 (66.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,338 mm³, 9.1% below the reference mean. With a Z-score of -0.56 (28.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,674 mm³, 2.0% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,481 mm³, 1.6% above the reference mean. With a Z-score of 0.14 (55.6th percentile), this represents normal volume . ",
  "text_data": "Age is 73.2 years. Gender is Female. Education: 20 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Malignancy; Major Surgical Procedures. MMSE: 28.0. MoCA: 25.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 28, MoCA 25) are also within normal limits for age, with no significant impairment. APOE4 carrier status increases Alzheimer's risk but does not confirm pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:18:45.729210"
}