{
  "ptid_time": "011_S_0021_2011-10-13",
  "img_path": "/data/qiuhui/data/adni/images/011_S_0021/2011-10-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,013 mm³, 21.6% below the reference mean. With a Z-score of -0.49 (31.1th percentile), this represents normal volume ; whole brain volume measures 936,233 mm³, 3.9% below the reference mean. With a Z-score of -0.50 (31.0th percentile), this represents normal volume ; entorhinal cortex volume measures 2,967 mm³, 19.2% below the reference mean. With a Z-score of -1.18 (11.9th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,552 mm³, 3.2% above the reference mean. With a Z-score of 0.29 (61.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,835 mm³, 12.2% below the reference mean. With a Z-score of -1.06 (14.5th percentile), this represents mild atrophy. ",
  "text_data": "Age is 78.6 years. Gender is Female. Education: 18 years. Handedness: Right. Race: Black or African American. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 27.0. MoCA: 25.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild atrophy in the entorhinal cortex and middle temporal gyrus, which are regions vulnerable to Alzheimer's pathology. However, cognitive scores (MMSE 27, MoCA 25) are within normal limits for age, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild atrophy in key regions warrants monitoring, but cognitive performance is preserved and genetic risk is low)",
  "timestamp": "2025-07-25T22:40:10.039486"
}