{
  "ptid_time": "141_S_1378_2007-03-26",
  "img_path": "/data/qiuhui/data/adni/images/141_S_1378/2007-03-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,745 mm³, 19.7% above the reference mean. With a Z-score of 0.49 (68.9th percentile), this represents normal volume ; hippocampal volume measures 7,639 mm³, 0.6% below the reference mean. With a Z-score of -0.07 (47.4th percentile), this represents normal volume ; whole brain volume measures 1,037,030 mm³, 0.8% above the reference mean. With a Z-score of 0.10 (53.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,319 mm³, 10.9% above the reference mean. With a Z-score of 0.85 (80.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,215 mm³, 11.0% above the reference mean. With a Z-score of 1.24 (89.2th percentile), this represents mild enlargement; middle temporal gyrus volume measures 19,466 mm³, 5.1% below the reference mean. With a Z-score of -0.46 (32.4th percentile), this represents normal volume . ",
  "text_data": "Age is 61.8 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Cardiovascular; Musculoskeletal; Gastrointestinal; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 28.0. Logical Memory: 3.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (hippocampal, whole brain, entorhinal cortex, and middle temporal gyrus) are within normal ranges, with only mild enlargement in the fusiform gyrus. The MMSE score of 28 is within the normal range (≥26), and there are no significant structural abnormalities suggestive of neurodegeneration. The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to normal imaging and cognitive scores, but APOE4 status warrants monitoring)",
  "timestamp": "2025-07-26T16:58:14.441971"
}