{
  "ptid_time": "130_S_0886_2007-10-08",
  "img_path": "/data/qiuhui/data/adni/images/130_S_0886/2007-10-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,442 mm³, 34.3% below the reference mean. With a Z-score of -0.79 (21.6th percentile), this represents normal volume ; hippocampal volume measures 7,464 mm³, 4.9% above the reference mean. With a Z-score of 0.45 (67.4th percentile), this represents normal volume ; whole brain volume measures 972,399 mm³, 0.2% below the reference mean. With a Z-score of -0.03 (48.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,716 mm³, 1.2% above the reference mean. With a Z-score of 0.07 (52.9th percentile), this represents normal volume ; fusiform gyrus volume measures 14,970 mm³, 12.0% below the reference mean. With a Z-score of -1.09 (13.7th percentile), this represents mild atrophy; middle temporal gyrus volume measures 17,575 mm³, 8.3% below the reference mean. With a Z-score of -0.72 (23.5th percentile), this represents normal volume . ",
  "text_data": "Age is 72.3 years. Gender is Female. Education: 15 years. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, and middle temporal gyrus) are within normal ranges except for mild atrophy in the fusiform gyrus. The MMSE score of 30 is intact, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:31:58.116976"
}