{
  "ptid_time": "072_S_1211_2007-03-09",
  "img_path": "/data/qiuhui/data/adni/images/072_S_1211/2007-03-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 81,288 mm³, 72.9% above the reference mean. With a Z-score of 2.12 (98.3th percentile), this represents significant enlargement; hippocampal volume measures 6,928 mm³, 0.6% below the reference mean. With a Z-score of -0.05 (48.0th percentile), this represents normal volume ; whole brain volume measures 1,038,240 mm³, 0.9% above the reference mean. With a Z-score of 0.12 (54.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,669 mm³, 7.6% below the reference mean. With a Z-score of -0.49 (31.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,058 mm³, 5.6% below the reference mean. With a Z-score of -0.48 (31.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,220 mm³, 9.7% below the reference mean. With a Z-score of -0.87 (19.3th percentile), this represents normal volume . ",
  "text_data": "Age is 86.7 years. Gender is Male. Education: 14 years. Handedness: Left. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Hematopoietic-Lymphatic; Renal-Genitourinary. MMSE: 28.0. Logical Memory: 4.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows significant ventricular enlargement (Z-score 2.12), which is often associated with brain atrophy, but hippocampal volume is normal (Z-score -0.05). Other regions (entorhinal cortex, fusiform gyrus, middle temporal gyrus) are slightly below average but still within normal ranges. The MMSE score of 28 is within normal limits, and there is no APOE4 risk allele.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement raises some concern, but other markers and cognitive performance suggest no impairment)",
  "timestamp": "2025-07-26T09:08:08.506620"
}