{
  "ptid_time": "137_S_0301_2011-04-27",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0301/2011-04-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,776 mm³, 50.9% below the reference mean. With a Z-score of -1.17 (12.2th percentile), this represents mild atrophy; hippocampal volume measures 7,251 mm³, 1.9% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; whole brain volume measures 963,347 mm³, 1.2% below the reference mean. With a Z-score of -0.15 (44.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,698 mm³, 0.7% above the reference mean. With a Z-score of 0.04 (51.7th percentile), this represents normal volume ; fusiform gyrus volume measures 14,282 mm³, 16.1% below the reference mean. With a Z-score of -1.46 (7.2th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,090 mm³, 0.4% below the reference mean. With a Z-score of -0.04 (48.6th percentile), this represents normal volume . ",
  "text_data": "Age is 78.4 years. Gender is Female. Education: 13 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Allergies or Drug Sensitivities; Alcohol Abuse; Smoking; Malignancy; Major Surgical Procedures. MMSE: 30.0. MoCA: 26.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the ventricular volume and fusiform gyrus, but other key regions (hippocampus, entorhinal cortex, whole brain) are within normal ranges. Cognitive scores (MMSE 30, MoCA 26) are borderline normal (MoCA slightly below typical cutoff for MCI), but no significant memory complaints or functional decline are noted. APOE4-negative and normal amyloid (AV45) reduce Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA and mild atrophy in some regions, but overall preserved cognition and no biomarker evidence of Alzheimer's",
  "timestamp": "2025-07-26T16:08:41.186881"
}