{
  "ptid_time": "153_S_4372_2012-12-11",
  "img_path": "/data/qiuhui/data/adni/images/153_S_4372/2012-12-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,040 mm³, 25.0% below the reference mean. With a Z-score of -0.57 (28.3th percentile), this represents normal volume ; hippocampal volume measures 7,802 mm³, 9.7% above the reference mean. With a Z-score of 0.89 (81.2th percentile), this represents normal volume ; whole brain volume measures 944,458 mm³, 3.1% below the reference mean. With a Z-score of -0.39 (34.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,966 mm³, 8.0% above the reference mean. With a Z-score of 0.49 (68.8th percentile), this represents normal volume ; fusiform gyrus volume measures 18,295 mm³, 7.5% above the reference mean. With a Z-score of 0.69 (75.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,746 mm³, 2.2% below the reference mean. With a Z-score of -0.19 (42.4th percentile), this represents normal volume . ",
  "text_data": "Age is 71.0 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE 29, MoCA 25) are also within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:14:36.786527"
}