{
  "ptid_time": "094_S_1241_2007-02-22",
  "img_path": "/data/qiuhui/data/adni/images/094_S_1241/2007-02-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,503 mm³, 18.2% below the reference mean. With a Z-score of -0.44 (33.1th percentile), this represents normal volume ; hippocampal volume measures 7,418 mm³, 1.9% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume ; whole brain volume measures 1,104,950 mm³, 2.4% above the reference mean. With a Z-score of 0.31 (62.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,088 mm³, 0.3% below the reference mean. With a Z-score of -0.02 (49.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,242 mm³, 13.8% below the reference mean. With a Z-score of -1.17 (12.0th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,650 mm³, 7.9% below the reference mean. With a Z-score of -0.71 (23.8th percentile), this represents normal volume . ",
  "text_data": "Age is 72.1 years. Gender is Male. Education: 20 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Musculoskeletal; Hematopoietic-Lymphatic; Renal-Genitourinary; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 9.0. 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 normal, and the absence of APOE4 alleles reduces genetic risk. No significant cognitive impairment is indicated.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:16:58.071031"
}