{
  "ptid_time": "130_S_4883_2013-05-24",
  "img_path": "/data/qiuhui/data/adni/images/130_S_4883/2013-05-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,248 mm³, 42.1% below the reference mean. With a Z-score of -0.96 (16.7th percentile), this represents normal volume ; hippocampal volume measures 7,280 mm³, 2.3% above the reference mean. With a Z-score of 0.21 (58.4th percentile), this represents normal volume ; whole brain volume measures 989,116 mm³, 1.5% above the reference mean. With a Z-score of 0.19 (57.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,421 mm³, 6.9% below the reference mean. With a Z-score of -0.42 (33.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,473 mm³, 2.7% above the reference mean. With a Z-score of 0.25 (59.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,459 mm³, 11.9% above the reference mean. With a Z-score of 1.04 (85.0th percentile), this represents mild enlargement. ",
  "text_data": "Age is 76.6 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges or show mild enlargement (middle temporal gyrus), with no significant atrophy. Cognitive scores (MMSE 29, MoCA 30) are intact, and APOE4 status is negative, further supporting normal cognition.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:53:05.968847"
}