{
  "ptid_time": "003_S_4288_2012-05-24",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4288/2012-05-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,953 mm³, 4.0% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; hippocampal volume measures 6,976 mm³, 1.9% below the reference mean. With a Z-score of -0.18 (42.9th percentile), this represents normal volume ; whole brain volume measures 922,570 mm³, 5.3% below the reference mean. With a Z-score of -0.67 (25.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,751 mm³, 2.1% above the reference mean. With a Z-score of 0.13 (55.2th percentile), this represents normal volume ; fusiform gyrus volume measures 14,404 mm³, 15.3% below the reference mean. With a Z-score of -1.40 (8.1th percentile), this represents mild atrophy; middle temporal gyrus volume measures 18,092 mm³, 5.6% below the reference mean. With a Z-score of -0.49 (31.3th percentile), this represents normal volume . ",
  "text_data": "Age is 73.0 years. Gender is Female. Education: 14 years. MMSE: 29.0. MoCA: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with only mild atrophy in the fusiform gyrus (Z-score -1.40, 8.1th percentile). Cognitive scores (MMSE 29, MoCA 28) are within the normal range, and there is no APOE4 risk allele. No significant hippocampal or entorhinal atrophy is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:50:58.517789"
}