{
  "ptid_time": "013_S_1186_2007-01-29",
  "img_path": "/data/qiuhui/data/adni/images/013_S_1186/2007-01-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,179 mm³, 23.1% below the reference mean. With a Z-score of -0.67 (25.2th percentile), this represents normal volume ; hippocampal volume measures 6,936 mm³, 0.5% below the reference mean. With a Z-score of -0.04 (48.4th percentile), this represents normal volume ; whole brain volume measures 1,004,950 mm³, 2.4% below the reference mean. With a Z-score of -0.31 (37.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,638 mm³, 8.3% below the reference mean. With a Z-score of -0.55 (29.3th percentile), this represents normal volume ; fusiform gyrus volume measures 18,146 mm³, 0.4% above the reference mean. With a Z-score of 0.04 (51.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,002 mm³, 5.8% below the reference mean. With a Z-score of -0.52 (30.2th percentile), this represents normal volume . ",
  "text_data": "Age is 83.2 years. Gender is Male. Education: 12 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Renal-Genitourinary; Major Surgical Procedures. MMSE: 28.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 28 is within the normal range (≥26), and the absence of APOE4 alleles further reduces Alzheimer's risk. No significant atrophy or cognitive impairment is evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:25:42.948563"
}