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重症监护中X-射线胸部影像的计算机辅助诊断:自动检测导管支持器件定位
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摘要
便携式X射线影像在重症监护中大量地被使用于重病病人管理之中,用来标示需要立即改变的,意义重大和不可预见的状况。高效的病人管理的关键之一就是要有能力检测到插入病人体内的导管的正确位置,这些导管包括气管导管、进食管、鼻饲管以及其它导管。正确的导管定位能有助于确保为重症监护病人在治疗期输送或排出液体和气体。不正确的导管定位能导致病人不舒服,影响治疗效果,甚至危及病人生命。然而,由于病人本身、设备设置以及X射线曝光等等因素,导致便携式X射线AP位胸部影像的图像质量很差,临床医生很难从上面正确的判断导管以及其端点位置。因而有必要检测和标识导管的位置以协助临床医生。本论文的目的就是提出一种计算机辅助的方法去检测导管,识别导管类型。使用本方法能让临床医生更简便更准确地检测导管及其端点,从而改善在重症监护中对病人的管理。
Portable X-ray radiographs are heavily used in ICU for indicating significant or unexpected conditions requiring immediate changes in patient management. One concern for effective patient management relates to the ability to detect the proper positioning of tubes that have been inserted into the patient. These include, for example, endo-tracheal tubes (ET), feeding tubes (FT), nasogastric tubes (NT) and other tubes. Proper tube positioning can help to insure delivery or disposal of liquids and air/gases to and from the patient during a treatment procedure. Improper tube positioning can cause patient discomfort, render a treatment ineffective, or can even be life-threatening. However, because the poor image quality in portable AP x-ray images due to the variability in patient’s, apparatus positioning, and x-ray exposure, it is often hard for clinicians to visually detect the position of tube tips. Thus there is a need for detecting and identifying tube position and type to assist clinicians. The purpose of this paper is to present a computer-aided method for automated detection of tubes and identification of tube types. Use of this method may allow clinicians to detect the tube tips more easily and accurately, thus improving the quality of patient management in ICU.
引文
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