{
  "ptid_time": "005_S_0602_2011-12-14",
  "img_path": "/data/qiuhui/data/adni/images/005_S_0602/2011-12-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,800 mm³, 35.6% below the reference mean. With a Z-score of -0.85 (19.7th percentile), this represents normal volume ; hippocampal volume measures 7,639 mm³, 1.1% above the reference mean. With a Z-score of 0.10 (54.1th percentile), this represents normal volume ; whole brain volume measures 978,515 mm³, 9.3% below the reference mean. With a Z-score of -1.21 (11.3th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,245 mm³, 20.9% below the reference mean. With a Z-score of -1.41 (7.9th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,611 mm³, 1.2% below the reference mean. With a Z-score of -0.10 (45.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,386 mm³, 4.5% below the reference mean. With a Z-score of -0.40 (34.4th percentile), this represents normal volume . ",
  "text_data": "Age is 75.7 years. Gender is Male. Education: 17 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Gastrointestinal; Renal-Genitourinary; Malignancy; Major Surgical Procedures. MMSE: 30.0. MoCA: 27.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the whole brain and entorhinal cortex, but other regions (hippocampus, fusiform gyrus, middle temporal gyrus) are within normal ranges. Cognitive scores (MMSE 30, MoCA 27) are normal, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (While atrophy in some regions is present, cognitive performance remains intact, suggesting no current impairment. However, mild atrophy may warrant monitoring.)",
  "timestamp": "2025-07-25T21:13:25.897363"
}