{
  "ptid_time": "082_S_6415_2018-08-01",
  "img_path": "/data/qiuhui/data/adni/images/082_S_6415/2018-08-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,452 mm³, 29.9% above the reference mean. With a Z-score of 0.68 (75.3th percentile), this represents normal volume ; hippocampal volume measures 7,538 mm³, 6.0% above the reference mean. With a Z-score of 0.55 (70.8th percentile), this represents normal volume ; whole brain volume measures 1,069,990 mm³, 9.8% above the reference mean. With a Z-score of 1.23 (89.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,060 mm³, 10.5% above the reference mean. With a Z-score of 0.65 (74.1th percentile), this represents normal volume ; fusiform gyrus volume measures 19,002 mm³, 11.7% above the reference mean. With a Z-score of 1.06 (85.6th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,634 mm³, 7.6% above the reference mean. With a Z-score of 0.66 (74.6th percentile), this represents normal volume . ",
  "text_data": "Age is 72.3 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. MMSE: 28.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, etc.) are within normal ranges or mildly enlarged, with no significant atrophy. Cognitive scores (MMSE 28, MoCA 25) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:10:07.407204"
}