{
  "ptid_time": "062_S_1182_2007-08-21",
  "img_path": "/data/qiuhui/data/adni/images/062_S_1182/2007-08-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,539 mm³, 26.8% below the reference mean. With a Z-score of -0.61 (27.0th percentile), this represents normal volume ; hippocampal volume measures 7,407 mm³, 4.1% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume ; whole brain volume measures 1,019,310 mm³, 4.6% above the reference mean. With a Z-score of 0.58 (71.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,502 mm³, 22.6% above the reference mean. With a Z-score of 1.39 (91.7th percentile), this represents mild enlargement; fusiform gyrus volume measures 16,204 mm³, 4.8% below the reference mean. With a Z-score of -0.43 (33.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,372 mm³, 4.2% below the reference mean. With a Z-score of -0.36 (35.9th percentile), this represents normal volume . ",
  "text_data": "Age is 76.5 years. Gender is Female. Education: 18 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges or mildly enlarged, with no significant atrophy. The MMSE score of 30/30 indicates intact cognitive function, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T08:19:20.595469"
}