{
  "ptid_time": "128_S_0770_2008-04-02",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0770/2008-04-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,561 mm³, 7.9% above the reference mean. With a Z-score of 0.19 (57.5th percentile), this represents normal volume ; hippocampal volume measures 7,872 mm³, 4.1% above the reference mean. With a Z-score of 0.40 (65.7th percentile), this represents normal volume ; whole brain volume measures 981,343 mm³, 9.1% below the reference mean. With a Z-score of -1.18 (11.9th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,019 mm³, 2.0% below the reference mean. With a Z-score of -0.13 (44.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,461 mm³, 2.0% below the reference mean. With a Z-score of -0.17 (43.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,506 mm³, 0.8% above the reference mean. With a Z-score of 0.07 (52.8th percentile), this represents normal volume . ",
  "text_data": "Age is 72.7 years. Gender is Male. Education: 19 years. MMSE: 29.0. Laboratory findings: . APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows mild whole brain atrophy (Z-score -1.18, 11.9th percentile), but hippocampal, entorhinal cortex, and other regional volumes are within normal ranges. The MMSE score of 29 is intact, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (mild whole brain atrophy could warrant monitoring, but no other significant markers of impairment)",
  "timestamp": "2025-07-26T13:49:55.855922"
}