{
  "ptid_time": "137_S_0301_2006-03-30",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0301/2006-03-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 11,709 mm³, 58.3% below the reference mean. With a Z-score of -1.33 (9.1th percentile), this represents mild atrophy; hippocampal volume measures 7,599 mm³, 6.8% above the reference mean. With a Z-score of 0.62 (73.4th percentile), this represents normal volume ; whole brain volume measures 984,945 mm³, 1.1% above the reference mean. With a Z-score of 0.13 (55.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,704 mm³, 0.8% above the reference mean. With a Z-score of 0.05 (52.1th percentile), this represents normal volume ; fusiform gyrus volume measures 13,558 mm³, 20.3% below the reference mean. With a Z-score of -1.85 (3.2th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 18,255 mm³, 4.8% below the reference mean. With a Z-score of -0.41 (33.9th percentile), this represents normal volume . ",
  "text_data": "Age is 73.4 years. Gender is Female. Education: 13 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Respiratory; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Malignancy; Major Surgical Procedures. MMSE: 28.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild ventricular enlargement (suggesting mild atrophy) and moderate atrophy in the fusiform gyrus, but hippocampal, whole brain, entorhinal cortex, and middle temporal gyrus volumes are within normal ranges. The MMSE score of 28 is normal, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (While some atrophy is present, cognitive performance remains intact, and key AD-related structures like the hippocampus are preserved. However, fusiform gyrus atrophy warrants monitoring.)",
  "timestamp": "2025-07-26T16:08:08.214820"
}