• Title/Summary/Keyword: 측와위

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Evaluation on Organ Dose and Image Quality by Changing kVp and Ion Chamber Combination while Taking Digital Chest Lateral Decubitus PA Projection (디지털 흉부 측와위 후전방향 검사 시 Ion chamber조합 설정과 관전압 변화에 따른 장기선량 및 화질 평가)

  • Lee, Jin-Soo;Park, Hyong-Hu
    • The Journal of the Korea Contents Association
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    • v.15 no.1
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    • pp.316-323
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    • 2015
  • In this study, we analyzed radiation dose and MTF with setting of Ion chamber and changing kVp so that we are able to suggest acquiring optimized diagnostic images and minimizing patient dose. we assumed right lateral decubitus position among chest decubitus projection and set 7 combination of Ion chamber. By changing kVp(100, 110, 120, 130kVp), we exposed x-ray five times respectively and calculated average value after measuring entrance dose. we input the entrance dose value to PCXMC Monte carlo simulation tool and calculated organ dose and effective dose. Then we did physical image evaluation with MTF for the purpose to compare image quality. As a result, the high kVp, entrance dose is reduced. As change of ion chamber, when selecting second ion chamber, both organ dose and effective dose were the lowest. In contrast, selecting first ion chamber was the highest. MTF is superior to set second Ion chamber and using 120 kVp. Consequently, when taking chest right lateral decubitus using Digital radiography, the optimized combination which have both reducing dose efficiently without declining image quality and aquring good qualified image is set 120 kVp and selecting second Ion chamber.

Efficient of Hepatobiliary Scintigraphy both Decubitus Position in Biliary Leakage Patients (간담도 스캔 시 담즙 누출(Biliary Leakage)환자에서의 양측와위 자세(Both Decubitus Position)의 유용성)

  • Bahn, Young-Kag;Roh, Dong-Ook;Kang, Chun-Koo;Kim, Jae-Sam;Lee, Chang-Ho
    • The Korean Journal of Nuclear Medicine Technology
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    • v.12 no.3
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    • pp.229-234
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    • 2008
  • Hepatobiliary scintigraphy is very sensitivity of hepatic cell and gallbladder, biliary track atresia and biliary leakage. however, Hepatobiliary scan of biliary leakage diagnosis was separated determine biliary leakage and bowl drainage bile-juice. The object of this study will determine biliary leakage and bowl drainage bile-juice to hepatobiliary scintigraphy both decubitus position in bile leakage patients. Material & Methode: 31 patients (meal 14, Femeal 17), $51.1{\pm}14.4$ years. dynamic scan acquisition 60 farme for 60 minute on supine position. and delay scan was 2 hrs, 4 hrs, 24 hrs for 5 minute on supine, both decubitus position. Both decubitus position scan was kept for 5 minutes. Efficient of Hepatobiliary Scintigraphy both decubitus position in bile leakage patients was compared leakage size, density, image of supine position and both decubitus position. Results: 23 patients for 31 bile leakage patients was checked up function image or delay image, and 8 patients was checked up bile leakage on both decubitus. anatomical leakage location was supine position very well, but both decubitus position was separated bile leakage and moving bile-juice in bowl. also, uptake (counts/pixel) average of roi and bkg was supine 5.02, left decubitus 2.08, right decubitus 2.68. No. pixels of supine ROI counted 1.91 times than left decubitus, 1.05 times than right decubitus. Conclusion: 31 patient both decubitus position, but decubitus position was separated bile juice movement in bowl leakage location. also, It was compared ROI/BKG ratio and ROI No. pixels of supine, both decubitus in 38.5% patients. And No. pixels of supine position was large 19%, 5% than left decubitus, right decubitus, And density was in low 60%, 50% than left decubitus, right decubitus. It was mean bile leakage of ROI. so, If Hepatobiliary Scintigraphy was additional both decubitus position scan in bile leakage patients, this study will be more valuable in diagnosis of bile leakage.

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Utility Comparison of Chest Lateral Decubitus Projection with AP and PA Position (흉부 측와위 촬영 시 전후방향과 후전방향 검사의 유용성 비교)

  • Choi, Guirack
    • Journal of the Korean Society of Radiology
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    • v.7 no.3
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    • pp.233-238
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    • 2013
  • Chest lateral decubitus radiation exposure PA be carried out in general, but emergency patient or the patient's discomfort in the body examination had a lot of inconvenience. In this study, we compared AP and PA image quality, patient safety, and analysis of the examination effectiveness between the two tests was to evaluate the usefulness. Pleurisy or pneumothorax in patients with suspected or diagnosed chest lateral decubitus radiation exposure 30 consecutive patients (male 20 patients, 10 females) were included in the study. Image quality evaluation method microstructure of lung, wide areas of diagnosis, a clear air-fluid interface, the patient rotate, cardiac shadow and sharp diaphragmatic was based on Department of Radiology specialist, division of pulmonology resident blind test was evaluated by four people. Chest decubitus by radiation exposure the AP and PA position examination the usefulness of comparative analysis Image quality in the AP and PA, whereas there was no significant difference in attitude, Stability of the patient and Radiation's examination efficiency AP position compared to the position of PA scores were higher. PA position does not require a examination may be of AP position in a position to suggest that.

A Study on Change Image According to Recumbent Position Holding Time for Patient Safety (In Chest Lateral Decubitus Examination) (환자안전을 고려한 횡와위 유지시간에 따른 영상변화에 관한 연구 (흉부 측와위 촬영 시))

  • Kim, Ki-Jin;Jeong, Chang-Min;Yoo, Se-Jong;Choi, Won-Jin;Kim, Jeong-Ho
    • Journal of the Korea Safety Management & Science
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    • v.18 no.1
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    • pp.147-152
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    • 2016
  • Chest lateral decubitus is a chest examination to determine the persence of pleural fluid in thorax. In this study, we prepare recumbent holding position time standard of chest lateral decubitus. The records of 15 patients with chest lateral decubitus between May and Jun. Recumbent holding time is 30, 60, 90, 120, 180, 210, 240 seconds. The result is fluid level change between 0.88mm to 9.63. Fluid heigh change between 9.9 percent to 42.5 percent. We can confirm fluid level change with chest decubitus image. The proper time for fluid level change is 180 seconds.

Diagnostic Accuracy and Safety of Medical Thoracoscopy (내과적 흉강경 검사의 진단적 유용성과 안전성)

  • Yang, Jung Kyung;Lee, Jung-Ho;Kwon, Mi-Hye;Jeong, Ji Hyun;Lee, Go Eun;Cho, Hyun Min;Kim, Young Jin;Jung, Sung Mee;Choi, Eu Gene;Son, Ji Woong;Na, Moon Jun
    • Tuberculosis and Respiratory Diseases
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    • v.63 no.3
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    • pp.261-267
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    • 2007
  • Background: The causes of the pleural effusion are remained unclear in a the substantial number of patients with exudative effusions determined by an examination of the fluid obtained via thoracentesis. Among the various tools for diagnosing exudative pleural effusions, thoracoscopy has a high diagnostic yield for cancer and tuberculosis. Medical thoracoscopy can also be carried out under local anesthesia with mild sedation. The aim of this study was to determine diagnostic accuracy and safety of medical thoracoscopy. Methods: Twenty-five patients with exudative pleural effusions of an unknown cause underwent medical thoracoscopy between October 2005 and September 2006 in Konyang University Hospital. The clinical data such as age, gender, preoperative pulmonary function, amounts of pleural effusion on lateral decubitus radiography were collected. The vital signs were recorded, and arterial blood gas analyses were performed five times during medical thoracoscopy in order to evaluate the cardiopulmonary status and acid-base changes. Results: The mean age of the patients was 56.8 years (range 22-79). The mean depth of the effusion on lateral decubitus radiography (LDR) was 27.49 mm. The medical thoracoscopic pleural biopsy was diagnostic in 24 patients (96.0%), with a diagnosis of tuberculosis pleurisy in 9 patients (36%), malignant effusions in 8 patients (32%), and parapneumonic effusions in 7 patients (28%). Medical thoracoscopy failed to confirm the cause of the pleural effusion in one patient, who was diagnosed with tuberculosis by a pericardial biopsy. There were no significant changes in blood pressure, heart rate, acid-base and no major complications in all cases during medical thoracoscopy (p>0.05). Conclusions: Medical thoracoscopy is a safe method for patients with unknown pleural effusions with a relatively high diagnostic accuracy.

Mini-open Rotator Cuff Repair Using Anterolateral Approach - Technical Note - (전외측 도달법을 이용한 소절개 회전근 개 봉합술 - 수술 술기 -)

  • Cho, Chul-Hyun;Sohn, Sung-Won;Bae, Ki-Cheor;Lee, Kyung-Jae;Seo, Hyuk-Joon
    • Journal of the Korean Arthroscopy Society
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    • v.14 no.1
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    • pp.49-52
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    • 2010
  • Purpose: We introduce arthroscopically assisted mini-open rotator cuff repair using anterolateral approach. Operative Technique: Placing lateral decubitus position on general anesthesia, a standard arthroscopic glenohumeral examination is performed to evaluate lesions of shoulder joint through posterior and anterior portal. And then arthroscope is placed in the subacromial space and we evaluate the size of the torn tendon and perform arthroscopic acromioplasty through lateral portal. A 3 to 4 cm skin incision is performed from anterolateral edge of acromion to distal and dissected along to raphe between anterior and middle deltoid. A deltoid retractor is then placed, allowing direct visualization of the rotator cuff and humeral head. As torn tendon is tagged by traction suture, we try to anatomical reduction on the footprint and then perform single row or double row repair of the rotator cuff using suture anchors. To prevent avulsion of the deltoid from the acromion, additional sutures by bone tunnel with acromion and deltoid is performed. Conclusion: This technique is useful procedure to get direct approach to anterior portion of supraspinatus tendon and to need lesser deltoid retraction than portal extension approach due to dividing along to raphe between anterior and middle deltoid. Also it provide better visualization of the superior portion of subscapularis and infraspinatus.

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Technical Improvement for Spine Radiography by Comparing Scoliotic and Lordotic Angle with Different Positioning Methods (촬영자세별 척추측만각과 척추전만각의 비교 분석에 따른 개선 방안)

  • Jung, Jae-Yeon;Son, Soon-Yong;Lee, Jong-Seok;Yoo, Beong-Gyu
    • Journal of radiological science and technology
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    • v.34 no.4
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    • pp.263-269
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    • 2011
  • Since the spine radiography were explained differently at every several hospitals and textbooks. the technique has not been accurately defined and interfered each other. We would like to define the most appropriate positioning for clinical cases, and reference books, by comparing scoliotic angle and lordotic angle. From Mar 2009 to Sep 2011, 85 patient cases were studied, who had not been undergone surgical treatment among spondylopathy patients. Scoliotic angle and lordotic angle were measured, using Cobb's method. We analyzed statistically using t-test(SPSS 18), and evaluated spine general radiography position. Moreover, we researched on the actual condition at 10 university hospitals in Seoul. The results of scoliotic angle measurement, the value at erect position showed 20.98% higher than supine position, and it has statistical significance (p<.01). In lordotic angle measurement, the value at neutral holding position represented 29.3% higher than supine position, and it also has statistical significance(p<.01). The results of clinical survey, supine posine(70.0%) took much higher possession than erect position(30.0%). In conclusion, compare to supine position, erect position shows increased scoliotic and lordotic angle. It was agreed with the importance of clinical erect position radiography, which gravity affects. So clinical radiologist must recognize the difference, and conduct an accurate study.

Simultaneous Anterior and Posterior Interosseous Nerve Syndrome Following Shoulder Arthroscopy in the Lateral Decubitus Position - Case Report - (측와위로 시행한 견관절 관절경 후에 동시에 발생한 전방 및 후방 골간 신경 증후군 - 증례보고 -)

  • Seo, Jae Sung;Kim, Jee Hoon;Kang, Dong Hwa
    • Clinics in Shoulder and Elbow
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    • v.16 no.2
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    • pp.148-152
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    • 2013
  • We report a case of simultaneous anterior and posterior interosseous nerve syndrome in association with shoulder arthroscopy. Shoulder arthroscopy was performed in a 45-year-old male patient with left shoulder instability. In the right lateral decubitus position, under general anesthesia, traction was applied with elbow extension for 2 hours. One week after surgery, the patient revisited the clinic for weakness of the flexor of the thumb, index finger, and extensor of the fingers. Recovery was not achieved after four months of observation. Therefore, nerve exploration was performed in the anterior and posterior interosseous nerve and hourglass-like fascicular constriction was detected in the posterior interosseous nerve. The area of constriction was removed and epineural neurorrhaphy was performed. Three months after exploration, the extension function of the fingers was recovered. Recovery was achieved gradually, and, five months after nerve exploration, the symptoms were completely recovered. Simultaneous anterior and posterior interosseous nerve syndrome following shoulder arthroscopy is rare. However, it could occur due to the traction and position of the patient. Thus, the operator should be careful of traction and position of the patient.

Evaluation of the Efficiency of Use of Fixation Instruments in Computed Tomography-Guided Biopsy of Lung Lesions (전산화단층촬영 유도하 폐 병소의 생검시 고정기구 사용의 효용성 평가)

  • Kim, Dae-Guen;Lee, Joo-Ah
    • The Journal of the Korea Contents Association
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    • v.22 no.7
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    • pp.676-683
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    • 2022
  • Minimizing patient movement during CT-guided lung biopsy is an important factor in the procedure. To minimize movement, a vacuum cushion was used to evaluate its effectiveness. The subjects of this study were 116 patients aged 40 years or older who had good coordination with postural fixation and breathing control. Posture measurements were performed in the supine position, prone position, oblique position, and lateral position according to each position of the lung lesion biopsy lesion. Measurement positions were measured in the anterior, posterior, right, and left positions based on the anatomical posture. In the prone position, the mean difference between the non-use and the use of the posterior was 1.7905, and t=2.913 (p<0.01), and the mean difference between the non-use/use was statistically significant. The difference between the unused and used averages of left was 2.4105, and the difference between the left averages was also significant with t=3.684 (p<0.01). The difference between the unused and used averages of the right was 2.3263, with t=3.791 (p<0.01). The mean difference between unused and used is statistically significant. As a result of statistical analysis, the biopsy of the lung lesion using a fixation device showed less movement in all postures. It is considered that it is meaningful in that it is possible to conduct a more accurate biopsy procedure and minimize the patient's posture movement by using a fixation device during the CT-guided biopsy of the lung lesion.

Operative Treatment for Degenerative Arthritis of Elbow - Arthroscopic surgery with traction in Lateral position - (주관절의 퇴행성 관절염에 대한 수술적 치료 - 측와위에서 견인을 이용한 관절경 수술 -)

  • Byun, Jae-Yong;Kim, Bo-Hyun;Whang, Chan-Ha;Kang, Shin-Taek;Kim, Jung-Man;Kim, Hyoung-Jun;Lee, Dong-Yeob
    • Journal of the Korean Arthroscopy Society
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    • v.10 no.2
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    • pp.178-183
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    • 2006
  • Purpose: We reported the results and efficiency of arthroscopic treatment in a state of the lateral traction about the degenerative arthris of elbow Materials and Methods: Twenty one elbows with the degenerative arthritis who were followed up for at 12 months were enrolled in this study. Male were 15 cases, female were 6 cases, the mean age was 47 years and right dominant hand was 14 cases. In all cases, during arthroscopic treatment under the traction of 10 pounds, we had done synovectomy, excision of loose body and anteroposterior spur. After operation, immobilization was done in the full extension state, and then continuous passive motion (CPM) was started two day Results: The average preoperative ROM of the elbow joint was $30{\sim}l15$ degree and the average postoperative ROM of the elbow joint was $5{\sim}130$ degree. The increasement of ROM was totally 41 degree in extension 25 degree and flexion 16 degree. The decrement of VAS in pain was from 7.5 into 2.3 and the increasement of the satisfactory function was from 1.8 into 9.0. Complication was in two cases. One was paresthesia of ulnar nerve, but resolved. The other was bullae formation around the elbow joint, but cured. Conclusion: Regarding degenerative arthritis of elbow, arthroscopic treatment showed excellent result in recovery of range of motion and relief of pain. We could obtain good visual field with distraction in lateral position.

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