{
  "ptid_time": "014_S_0519_2010-08-30",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0519/2010-08-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 48,975 mm³, 27.2% above the reference mean. With a Z-score of 0.65 (74.2th percentile), this represents normal volume ; hippocampal volume measures 7,393 mm³, 2.2% below the reference mean. With a Z-score of -0.21 (41.5th percentile), this represents normal volume ; whole brain volume measures 1,003,070 mm³, 7.1% below the reference mean. With a Z-score of -0.92 (17.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,410 mm³, 16.8% below the reference mean. With a Z-score of -1.14 (12.7th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,760 mm³, 0.4% below the reference mean. With a Z-score of -0.04 (48.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,153 mm³, 3.8% above the reference mean. With a Z-score of 0.34 (63.4th percentile), this represents normal volume . ",
  "text_data": "Age is 78.1 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Gastrointestinal; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 30.0. MoCA: 27.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild atrophy in the entorhinal cortex, but all other regions (hippocampus, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges. Cognitive scores (MMSE 30, MoCA 27) are intact, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild entorhinal atrophy, but no cognitive impairment or other significant atrophy)",
  "timestamp": "2025-07-25T23:40:53.901473"
}