{
  "ptid_time": "099_S_6396_2019-07-23",
  "img_path": "/data/qiuhui/data/adni/images/099_S_6396/2019-07-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,769 mm³, 36.7% below the reference mean. With a Z-score of -0.84 (20.0th percentile), this represents normal volume ; hippocampal volume measures 8,050 mm³, 13.1% above the reference mean. With a Z-score of 1.21 (88.6th percentile), this represents mild enlargement; whole brain volume measures 951,823 mm³, 2.3% below the reference mean. With a Z-score of -0.29 (38.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,289 mm³, 16.8% above the reference mean. With a Z-score of 1.03 (84.8th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,501 mm³, 8.7% above the reference mean. With a Z-score of 0.80 (78.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,111 mm³, 10.1% above the reference mean. With a Z-score of 0.88 (81.0th percentile), this represents normal volume . ",
  "text_data": "Age is 76.3 years. Gender is Female. Education: 14 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or mildly enlarged structures, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 29, MoCA 25) are within normal or mildly impaired ranges, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T11:12:47.290690"
}