- 期刊
使用多排偵檢器電腦斷層血管攝影技術應用於腸胃道出血
Using MDCT-CTA Technique Applies to Gastrointestinal Bleeding
摘要
現今電腦斷層儀的發展均以偵檢器的多寡為指標，從過去的單排到今日256排的倍數級演進，目的無非是希望利用更多排偵檢器的電腦斷層儀器能有效縮短掃描時間與增加影像解析度，進而達成高品質的醫學影像，如高解析之電腦斷層血管攝影技術(CT-angiography; CTA)。腸胃道出血統計約有九成的病因多為消化性潰瘍、食道炎、胃炎、癌症、食道靜脈瘤、Mallory-Weiss症候群等，不明原因約佔一成。以往臨床會利用血管攝影或核子醫學檢查來評估內視鏡無法觀察到的出血部位，並找出造成出血的原因再進行治療。本研究採用多排偵檢器電腦斷層血管攝影MDCT(Multidetector Computed tomography)-CTA的技術，在為期10個月的統計，有44位懷疑腸胃道出血的病人先以CTA的技術來進行掃描後，有18位病人進而再作血管攝影的檢查，並將出血的位置作比較，比較的結果可觀察到這18位病人血管攝影顯示的出血部位與MDCT-CTA影像上顯示的大部份呈現為一致性，從結果所得知以MDCT-CTA技術應用在腸胃道出血是可行性，更適合作為診斷腸胃道出血的優先使用檢查儀器。
並列摘要
As scanner developed, from signal heical CT to 256 multidetector-row CT (MDCT), The higher image quality is approached. With the introduction of MDCT, it can more efficiently reduce the scan time and improve the image resolution. For example higher resolution CTA. Acute gastrointestinal (GI) bleeding is a common medical emergency, and it most commonly related to peptic ulcer, esophagitis, gastritis, cancer, esophageal varices, or Mallory-Weiss syndrome. About 10%, the cause of acute GI bleeding is unknown. Current diagnostic modalities for patients with acute GI bleeding include angiography, endoscopy, and nuclear medicine techniques. However, endoscopy can not always find the location of active GI bleeding, especially when active bleeding is located at the small intestine. Hence, we studies 44 patients with clinical symptoms and presentation of acute GI bleeding. The study was collected from January to October in 2006. All patients were underwent MDCT scan with CT-angiography for detecting the source of active GI bleeding, and then, these findings were correlated with conventional angiographic examinations. Based on our initial results, we conclude that the findings on both modalities are consistency and MDCT may be considered as a rapid, non-invasive and accurate tool in the detection and location of acute GI bleeding.