{
  "ptid_time": "027_S_0116_2006-01-27",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0116/2006-01-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,915 mm³, 22.3% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; hippocampal volume measures 6,813 mm³, 9.9% below the reference mean. With a Z-score of -0.96 (16.8th percentile), this represents normal volume ; whole brain volume measures 928,173 mm³, 14.0% below the reference mean. With a Z-score of -1.82 (3.4th percentile), this represents moderate atrophy; entorhinal cortex volume measures 4,048 mm³, 1.3% below the reference mean. With a Z-score of -0.09 (46.5th percentile), this represents normal volume ; fusiform gyrus volume measures 18,078 mm³, 4.0% below the reference mean. With a Z-score of -0.34 (36.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,754 mm³, 7.4% below the reference mean. With a Z-score of -0.67 (25.2th percentile), this represents normal volume . ",
  "text_data": "Age is 78.4 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The whole brain volume shows moderate atrophy (Z-score -1.82, 3.4th percentile), while hippocampal and other regional volumes are within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to whole brain atrophy but normal cognition and no other significant atrophy)",
  "timestamp": "2025-07-26T03:27:02.053093"
}