{
  "ptid_time": "020_S_0899_2007-05-14",
  "img_path": "/data/qiuhui/data/adni/images/020_S_0899/2007-05-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,743 mm³, 4.8% above the reference mean. With a Z-score of 0.13 (55.2th percentile), this represents normal volume ; hippocampal volume measures 6,061 mm³, 6.7% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; whole brain volume measures 858,691 mm³, 7.5% below the reference mean. With a Z-score of -0.90 (18.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,161 mm³, 8.7% below the reference mean. With a Z-score of -0.47 (31.9th percentile), this represents normal volume ; fusiform gyrus volume measures 15,077 mm³, 6.4% below the reference mean. With a Z-score of -0.48 (31.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,806 mm³, 1.2% below the reference mean. With a Z-score of -0.11 (45.6th percentile), this represents normal volume . ",
  "text_data": "Age is 80.6 years. Gender is Female. Education: 16 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures (hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are all within normal ranges despite being slightly below the reference mean, with Z-scores indicating no significant atrophy. The MMSE score of 29 is within the normal range, and the absence of APOE4 alleles reduces genetic risk.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T01:12:13.964491"
}