{
  "ptid_time": "035_S_0156_2006-01-31",
  "img_path": "/data/qiuhui/data/adni/images/035_S_0156/2006-01-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 55,788 mm³, 44.8% above the reference mean. With a Z-score of 1.07 (85.9th percentile), this represents mild enlargement; hippocampal volume measures 7,670 mm³, 1.5% above the reference mean. With a Z-score of 0.14 (55.7th percentile), this represents normal volume ; whole brain volume measures 1,043,700 mm³, 3.3% below the reference mean. With a Z-score of -0.43 (33.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,460 mm³, 8.8% above the reference mean. With a Z-score of 0.59 (72.4th percentile), this represents normal volume ; fusiform gyrus volume measures 16,879 mm³, 10.4% below the reference mean. With a Z-score of -0.89 (18.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,601 mm³, 12.8% below the reference mean. With a Z-score of -1.15 (12.4th percentile), this represents mild atrophy. ",
  "text_data": "Age is 74.1 years. Gender is Male. Education: 17 years. Handedness: Right. Race: White. Medical history: Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows mild enlargement (Z-score 1.07), while hippocampal and whole brain volumes are within normal ranges. The middle temporal gyrus exhibits mild atrophy (Z-score -1.15), but cognitive performance (MMSE 30) remains intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild structural changes despite normal cognition)",
  "timestamp": "2025-07-26T05:43:03.842870"
}