{
  "ptid_time": "128_S_0522_2006-05-19",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0522/2006-05-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,656 mm³, 58.7% above the reference mean. With a Z-score of 1.40 (91.9th percentile), this represents mild enlargement; hippocampal volume measures 7,399 mm³, 7.8% below the reference mean. With a Z-score of -0.78 (21.7th percentile), this represents normal volume ; whole brain volume measures 1,043,180 mm³, 8.1% below the reference mean. With a Z-score of -1.14 (12.7th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,506 mm³, 5.7% above the reference mean. With a Z-score of 0.39 (65.3th percentile), this represents normal volume ; fusiform gyrus volume measures 16,764 mm³, 15.8% below the reference mean. With a Z-score of -1.31 (9.5th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,985 mm³, 10.8% below the reference mean. With a Z-score of -0.89 (18.6th percentile), this represents normal volume . ",
  "text_data": "Age is 69.9 years. Gender is Male. Education: 17 years. Handedness: Right. Race: White. Medical history: Psychiatric; Musculoskeletal; Endocrine-Metabolic; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The patient shows mild ventricular enlargement and mild whole brain atrophy, along with mild atrophy in the fusiform gyrus, but hippocampal and entorhinal cortex volumes are within normal ranges. The MMSE score of 29 is normal, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild structural changes despite normal cognition)",
  "timestamp": "2025-07-26T13:45:47.659602"
}