• 제목/요약/키워드: Examination Posture

검색결과 82건 처리시간 0.052초

디지털 무선 검출기를 이용한 이동형 X선검사에서 영상품질 저하의 요인분석 (An Analysis of Factors That Affect Image Quality Deterioration in The Potable X-ray Examination on using Digital Wireless Detector)

  • 유영은;임청환;고주영
    • 대한방사선기술학회지:방사선기술과학
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    • 제37권2호
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    • pp.93-100
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    • 2014
  • 최근 무선 LAN통신 기능을 이용하여 보다 간편하고 빠르게 디지털 방사선 영상을 획득할 수 있는 디지털 무선 이동촬영장치가 개발되어 많은 편의성을 제공하고 있다. 응급 또는 중환자를 대상으로 시행하는 이동촬영(Portable)검사 특성상 발생할 수 있는 초점-격자 간 중심변위와 피사체의 검출기내 위치변위가 영상화질에 미치는 영향을 평가하여 디지털 무선 검출기의 가이드라인을 제시하고자 한다. 본 연구에서 사용된 장비는 Elmo-T6 Digital Mobile X선시스템(SIMAZU사), el' Tor($14{\times}17$"Wireless detector), 격자(10:1), Chest & head phantom을 사용하였다. 선량증가에 따른 후처리 영상과 초점-격자 간 중심변위와 두부팬텀의 위치변위 영상을 획득한 후 디지털 영상분석 프로그램 Image J를 사용하여 영상을 비교분석 평가하였다. 선량증가에 따른 영상의 변화에서 0.5 mAs의 선량에서는 영상이 거칠고, 적정선량인 1~2 mAs에서 시각적으로 영상의 차이를 알 수 없었고, 특히 2.5 mAs 부터 픽셀 평균값이 급격히 감소하여 대조도에 영향을 미치는 것으로 나타났다. 3 mAs 이상에서는 폐부분의 포화현상으로 대조도가 떨어졌다. Image J 프로그램을 이용한 분석결과 초점-격자 간과 두부팬텀의 중심의 위치변위가 커질수록 낮은 픽셀값의 빈도수가 증가하여 표면도의 윤곽형태가 사라져 대조도에 영향을 미치는 것으로 나타났다. 중환자의 특성상 환자 자세의 어려움, 움직임, 호흡 및 X선관의 변위, 촬영거리의 적용여부에 따라 영상화질을 변화시킬 수 있다는 사실을 방사선사는 정확히 인지하여 검사에 임해야 할 것으로 사료된다.

Moire 영상을 이용한 근골격계 질환의 한의학적 진단에 관한 연구 (A Study on Oriental Medical Diagnosis of Musculoskeletal Disorders using Moire Image)

  • 이은경;유승현;이수경;강성호;한종민;정명수;천은주;송용선;이기남
    • 대한예방한의학회지
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    • 제4권2호
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    • pp.72-92
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    • 2000
  • This research has conducted studies on an Oriental medicine-based method of diagnosing of occupational musculoskeletal system diseases. This researcher has searched through existing relevant medical literature. Also, this researcher has worked on a moire topography using moire topography. In this course, this researcher has reached the following conclusion in relation to the possibility of using a moire topography as a diagnosing device of musculoskeletal system diseases under Oriental medicine . 1 The Western medicine outlines its criteria of screening occupational musculoskeletal system diseases as follows A. The occupational musculoskeletal diseases must clearly include one or more of the subjective symptoms characterized by pain, hypoesthesia dysaesthesia, anaesthesia. etc . B, There should be clinically admitted objective observations and diagnosis outlining that the disease concerned shows symptoms such as tenderness, induration. and edema that can appear with occupational musculoskeletal system diseases. dyscinesia should be admitted with the disease concerned, or there should be observations and diagnosis outlining that abnormality exists in electric muscular or nervous diagnosis and examination . C. It should be admitted that prior to the occurrence of symptoms or observations and diagnosis on musculoskeletal system-related diseases, a patient has been engaged in works with conditions requiring improper work posture or work movement. That is, this is an approach whereby they see abnormality in the musculoskeletal system come from material and structural defect, and adjust and control abnormality in the musculoskeletal system and secreta . 2. The Oriental medicines sees that a patient develops the pain of occupational musculoskeletal diseases as he cannot properly activate the flow of his life force and blood thus not only causing formation of lumps in the body and blocking the flow of life force and blood in some parts of the body. Hence, The Oriental medicine focuses on resolving the cause of weakening the flow of life force and blood, instead of taking material approach of correcting structural abnormality Furthermore , Oriental medicine sees that when muscle tension builds up, this presses blood vessels and nerves passing by, triggering circulation dyscrasia and neurological reaction and thus leading to lesion. Thus, instead of taking skeletal or neurophysiological approach. it seeks to fundamentally resolve the cause of the flow of the life force and blood in muscles not being activated. As a result Oriental medicine attributes the main cause of musculoskeletal system diseases to muscle tension and its build-up that stem from an individual's long formed chronicle habit and work environment. This approach considers not only the social structure aspect including companies owners and work environment that the existing methods have looked at, but also individual workers' responsibility and their environmental factors. Hence, this is a step forward method. 3 The diagnosis of musculoskeletal diseases under Oriental medicine is characterized by the fact that an Oriental medicine doctor uses not only photos taken by himself, but also various detection devices to gather information and pass comprehensive judgment on it. Thus, it is the core of diagnosis under Oriental medicine to develop diagnosing devices matching the characteristics of information to be induced and to interpret information so induced from the views of Oriental medicine. Diagnosis using diagnosing devices values the whole state of a patient and formal abnormality alike, and the whole balance and muscular state of a patient serves as the basis of diagnosis. Hence, this method, instead of depending on the information gathered from devices under Western medicine, requires devices that provide information on the whole state of a patient in addition to the local abnormality information that X-ray. CT, etc., can offer. This method sees muscle as the central part of the abnormality in the musculoskeletal system and thus requires diagnosing devices enabling the muscular state. 4. The diagnosing device using moire topography under Oriental medicine has advantages below and can be used for diagnosing musculoskeletal system diseases with industrial workers . First, the device can Provide information on the body in an unbalanced state. and thus identify the imbalance and difference of height in the left and right stature that a patient can not notice at normal times. Second, the device shows the twisting of muscles or induration regions in a contour map. This is not possible with existing shooting machines such as X-ray, CT, etc., thus differentiating itself from existing machines. Third, this device makes it possible for Oriental medicine to take its unique approach to the abnormality in the musculoskeletal system. Oriental medicine sees the state and imbalance state in muscles as major factors in determining the lesion of musculoskeletal system, and the device makes it possible to shoot the state of muscles in detail. In this respect, the device is significant. Fourth, the device has an advantage as non-aggression diagnosing device.

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