{
  "ptid_time": "020_S_1288_2007-10-12",
  "img_path": "/data/qiuhui/data/adni/images/020_S_1288/2007-10-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 10,736 mm³, 64.2% below the reference mean. With a Z-score of -1.53 (6.3th percentile), this represents moderate atrophy; hippocampal volume measures 8,510 mm³, 6.0% above the reference mean. With a Z-score of 0.60 (72.6th percentile), this represents normal volume ; whole brain volume measures 1,224,640 mm³, 7.9% above the reference mean. With a Z-score of 1.12 (87.0th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,000 mm³, 6.2% below the reference mean. With a Z-score of -0.43 (33.5th percentile), this represents normal volume ; fusiform gyrus volume measures 21,843 mm³, 9.7% above the reference mean. With a Z-score of 0.81 (79.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,239 mm³, 3.7% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume . ",
  "text_data": "Age is 60.4 years. Gender is Male. Education: 20 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows moderate atrophy (Z-score -1.53), but hippocampal, entorhinal cortex, and other key regional volumes are within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular atrophy is notable but not accompanied by other structural or clinical markers of impairment)",
  "timestamp": "2025-07-26T01:12:51.612506"
}