{
  "ptid_time": "057_S_0934_2011-11-09",
  "img_path": "/data/qiuhui/data/adni/images/057_S_0934/2011-11-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,055 mm³, 0.0% below the reference mean. With a Z-score of -0.00 (50.0th percentile), this represents normal volume ; hippocampal volume measures 7,004 mm³, 1.6% below the reference mean. With a Z-score of -0.14 (44.3th percentile), this represents normal volume ; whole brain volume measures 902,751 mm³, 7.4% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,021 mm³, 17.7% below the reference mean. With a Z-score of -1.09 (13.8th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,766 mm³, 4.4% above the reference mean. With a Z-score of 0.40 (65.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,853 mm³, 6.9% below the reference mean. With a Z-score of -0.60 (27.6th percentile), this represents normal volume . ",
  "text_data": "Age is 75.0 years. Gender is Female. Education: 10 years. Handedness: Left. Race: White. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 30.0. MoCA: 28.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild atrophy in the entorhinal cortex, which is an early marker of Alzheimer's pathology, but all other regions (including hippocampus) are within normal ranges. Cognitive scores (MMSE 30, MoCA 28) are intact, and amyloid PET (AV45) is normal, making neurodegenerative dementia unlikely.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild entorhinal atrophy, but no clinical or biomarker evidence of impairment)",
  "timestamp": "2025-07-26T08:06:40.910980"
}