{
  "ptid_time": "009_S_4814_2013-08-19",
  "img_path": "/data/qiuhui/data/adni/images/009_S_4814/2013-08-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 48,110 mm³, 71.4% above the reference mean. With a Z-score of 1.64 (94.9th percentile), this represents moderate enlargement; hippocampal volume measures 6,778 mm³, 4.7% below the reference mean. With a Z-score of -0.43 (33.2th percentile), this represents normal volume ; whole brain volume measures 1,117,270 mm³, 14.6% above the reference mean. With a Z-score of 1.84 (96.7th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,652 mm³, 0.6% below the reference mean. With a Z-score of -0.03 (48.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,963 mm³, 17.3% above the reference mean. With a Z-score of 1.58 (94.3th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,749 mm³, 18.7% above the reference mean. With a Z-score of 1.62 (94.7th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 70.3 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 27.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is moderately enlarged (71.4% above mean, Z-score 1.64), which can indicate atrophy, but hippocampal and entorhinal cortex volumes are within normal ranges. Cognitive scores (MMSE 29, MoCA 27) are intact, and there is no APOE4 risk allele. No clear structural or clinical evidence of neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement raises some concern, but cognitive performance and other key volumes are normal)",
  "timestamp": "2025-07-25T22:24:07.805374"
}