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Giá trị của CLVT hai mức năng lượng trong tiên lượng nguy cơ chảy máu não sau lấy huyết khối cơ học

Bài viết trình bày mô tả đặc điểm hình ảnh CLVT hai mức năng lượng (DECT) sọ não của bệnh nhân sau lấy huyết khối cơ học điều trị nhồi máu não cấp. Đánh giá giá trị của DECT trong việc tiên lượng chảy máu chuyển dạng sau lấy huyết khối. | GIÁ TRỊ CỦA CLVT HAI MỨC NĂNG LƯỢNG NGHIÊN CỨU KHOA HỌC TRONG TIÊN LƯỢNG NGUY CƠ CHẢY SCIENTIFIC RESEARCH MÁU NÃO SAU LẤY HUYẾT KHỐI CƠ HỌC The role of dual energy CT in prediction of hemorrhagic complications after mechanical thrombectomy for acute Ischemic stroke Vũ Thị Thanh Phạm Minh Thông Vũ Đăng Lưu Trần Anh Tuấn Lê Hoàng Kiên Nguyễn Quang Anh Nguyễn Tất Thiện Nguyễn Hữu An SUMMARY Purpose Evaluate the characteristics of Dual-energy CT of the brain performed after mechanical thrombectomy. Acess the capability of iodine extravasation quantification on DECT to predict hemorrhagic complications. Material and methods Retrospective descriptive study. Thirty consecutive patients who underwent brain dual-energy CT right after mechanical thrombectomy for acute ischemic stroke between July 2019 and September 2020 in Radiology Center Bach Mai hospital were included. Maximum iodine concentration was measured. Follow-up CT or MRI examinations performed at 24hrs after intervention were reviewed for intracerebral hemorrhage development. The correlation between dual- energy CT parameters and intracerebral hemorrhage development was analyzed by the Mann-Whitney U test and Fisher exact test. Receiver operating characteristic curves were generated for continuous variables. Result Nineteen of 30 patients 63.3 developed hemorrhage in different grades. On postoperative dual-energy CT parenchymal hyperdensities and iodine extravasation were present in 19 100 of the 19 patients who developed intracerebral hemorrhage and in 7 63.6 of the 11 patients who did not P 0.0012 . Signs of bleeding were present in 5 45.4 of the 19 patients who developed intracerebral hemorrhage and in none of the patients who did not. Median density of contrast extravasation in hemorrhage and non-hemorrhage is 108.8HU and 33.6HU P 0.001 . Median maximum iodine concentration was 2.9 mg mL in the patients who developed intracerebral hemorrhage and 0.59 mg mL in the patients who did not P 0.003 . Maximum .