{
  "ptid_time": "036_S_1023_2013-01-07",
  "img_path": "/data/qiuhui/data/adni/images/036_S_1023/2013-01-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,571 mm³, 9.2% below the reference mean. With a Z-score of -0.25 (40.2th percentile), this represents normal volume ; hippocampal volume measures 6,095 mm³, 6.2% below the reference mean. With a Z-score of -0.49 (31.1th percentile), this represents normal volume ; whole brain volume measures 886,668 mm³, 4.5% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,464 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.1th percentile), this represents normal volume ; fusiform gyrus volume measures 15,256 mm³, 5.3% below the reference mean. With a Z-score of -0.40 (34.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 14,472 mm³, 19.7% below the reference mean. With a Z-score of -1.76 (4.0th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 83.1 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, except for moderate atrophy in the middle temporal gyrus. However, cognitive scores (MMSE 30, MoCA 28) are within the normal range, and there is no significant hippocampal or entorhinal atrophy. The presence of one APOE4 allele increases AD risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to isolated temporal atrophy but intact cognition)",
  "timestamp": "2025-07-26T06:09:08.160469"
}