{
  "ptid_time": "007_S_0068_2011-01-11",
  "img_path": "/data/qiuhui/data/adni/images/007_S_0068/2011-01-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,372 mm³, 22.5% above the reference mean. With a Z-score of 0.51 (69.6th percentile), this represents normal volume ; hippocampal volume measures 6,988 mm³, 1.8% below the reference mean. With a Z-score of -0.16 (43.5th percentile), this represents normal volume ; whole brain volume measures 914,260 mm³, 6.2% below the reference mean. With a Z-score of -0.78 (21.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,477 mm³, 5.3% below the reference mean. With a Z-score of -0.33 (37.2th percentile), this represents normal volume ; fusiform gyrus volume measures 15,269 mm³, 10.3% below the reference mean. With a Z-score of -0.93 (17.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,858 mm³, 8.8% above the reference mean. With a Z-score of 0.76 (77.8th percentile), this represents normal volume . ",
  "text_data": "Age is 79.4 years. Gender is Female. Education: 12 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Gastrointestinal; Hematopoietic-Lymphatic; Renal-Genitourinary; Major Surgical Procedures. MMSE: 30.0. MoCA: 26.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures fall within normal ranges (Z-scores between -0.93 and 0.76), with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 30, MoCA 26) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:44:30.414996"
}