{
  "ptid_time": "116_S_1232_2007-01-24",
  "img_path": "/data/qiuhui/data/adni/images/116_S_1232/2007-01-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,798 mm³, 50.8% below the reference mean. With a Z-score of -1.16 (12.2th percentile), this represents mild atrophy; hippocampal volume measures 7,401 mm³, 4.0% above the reference mean. With a Z-score of 0.37 (64.4th percentile), this represents normal volume ; whole brain volume measures 983,980 mm³, 1.0% above the reference mean. With a Z-score of 0.12 (54.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,115 mm³, 12.0% above the reference mean. With a Z-score of 0.74 (77.0th percentile), this represents normal volume ; fusiform gyrus volume measures 16,797 mm³, 1.3% below the reference mean. With a Z-score of -0.12 (45.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,865 mm³, 1.6% below the reference mean. With a Z-score of -0.14 (44.5th percentile), this represents normal volume . ",
  "text_data": "Age is 72.1 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Renal-Genitourinary; Allergies or Drug Sensitivities; Malignancy; Major Surgical Procedures. MMSE: 28.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular enlargement (mild atrophy) but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). The MMSE score of 28 is within the normal range, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:00:00.913594"
}