A novel removable shield attached to C-arm units against scattered X-rays from a patient’s side

Mori, Hiroshige; Koshida, Kichiro; Ishigamori, Osamu; Matsubara, Kosuke

doi:10.1007/s00330-014-3186-x

Cited by 12 publications

(11 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Moreover, as it has been described analytically, the presented method allows greater accuracy in the computation of secondary barriers. This is due to the fact that the shielding thickness required to reduce the weekly exposure to the design limit, can be precisely determined with no use of the "Add one HVL" recommendation of NCRP 49, which results to over shielding [17].…”

Section: Resultsmentioning

confidence: 99%

Construction Shielding Design for Medical X-Ray Imaging Equipment

Rahimi¹

2014

AJPA

View full text Add to dashboard Cite

There are analytic methods for designing protective barriers however, they lack sufficient efficiency and considering the NCRP (National Council on Radiation Protection and measurements) reports, designing mechanical protective barrier in order to protect the initial x-ray radiation and absorption of the ray quality of such radiation is different. In this study, computer software was designed to calculate the needed barrier with high accuracy. For proper determination of thickness of the protective barrier, relevant information about curves of radiation weakness, dose limit and other items should be entered. This program was done in windows and designed in such a way that the operator works easily, flexibility of the program is acceptable and its accuracy and sensitivity is high. Meanwhile sometimes shielding is more than what required which lacks technical standards and cost effectiveness. When the application index is contrasting zero, thickness of NCRP49 calculation is about 20% less than the calculated rate done by the method of this study. The multi radiation sources in a single room are considered and non guaranteed radiation of NCRP hypothesis is removed. Difference between the theoretical and calculated rates of this method is X 2 =10-5 which indicates accuracy and high efficiency of this software.

show abstract

Section: Resultsmentioning

confidence: 99%

Construction Shielding Design for Medical X-Ray Imaging Equipment

Rahimi¹

2014

AJPA

View full text Add to dashboard Cite

show abstract

“…The use of radiation protective devices is necessary to reduce the lens dose in procedures that use a fluorographic imaging unit [19]. Various studies of the dose reduction rate with the protective devices used in fluoroscopy examinations have been performed [5,10,15,16,[20][21][22], but the present study is the first to verify the exposure reduction rate with radiation protective devices from the perspective of collective equivalent dose for the lens of the eye in the entire hospital.…”

Section: Discussionmentioning

confidence: 96%

“…The equivalent dose for the lens of the eye of medical personnel who perform endoscopic retrograde cholangiopancreatography (ERCP) is reported to be 15.5-210 µSv per patient [3][4][5][6][7][8]. In addition, it has been reported that, when gastroenterologists perform ERCP without any lens protection, the equivalent dose limit for the lens of the eye (20 mSv/year) is exceeded [9,10]. Therefore, the guidelines of the World Gastroenterology Organization recommend the use of lead glasses or facemasks or visors of lower lead equivalence that cover the whole of the face [11].…”

Section: Introductionmentioning

confidence: 99%

Strategy to Reduce the Collective Equivalent Dose for the Lens of the Physician’s Eye Using Short Radiation Protection Curtains to Prevent Cataracts

et al. 2021

View full text Add to dashboard Cite

A short curtain that improves on the low versatility of existing long curtains was developed as a dedicated radiation protective device for the over-table tube fluorographic imaging units. The effect of this short curtain in preventing cataracts was then examined. First, the physician lens dose reduction rate was obtained at the position of the lens. Next, the reduction rate in the collective equivalent dose for the lens of the physician’s eye was estimated. The results showed that lens dose reduction rates with the long curtain and the short curtain were 88.9% (literature-based value) and 17.6%, respectively, higher with the long curtain. In our hospital, the reduction rate in the collective equivalent dose for the lens of the physician’s eye was 9.8% and 17.6% with a procedures mixture, using the long curtain where technically possible and no curtain in all other procedures, and the short curtain in all procedures, respectively, higher with the short curtain. Moreover, a best available for curtains raised the reduction rate in the collective equivalent dose for the lens of the physician’s eye a maximum of 25.5%. By introducing the short curtain, it can be expected to have an effect in preventing cataracts in medical staff.

show abstract

“…More recently, in 2011, Kim et al 11 used a curtain-shaped protective shield composed of seven movable lead plates to reduce radiation. Several other studies have attempted to attach lead shields directly to X-ray tubes12–14 or image intensifiers 15. The above-mentioned studies commonly used a method of hanging a radiation protective shield from above, similar to a curtain.…”

Section: Discussionmentioning

confidence: 99%

Radiation protection effect of mobile shield barrier for the medical personnel during endoscopic retrograde cholangiopancreatography: a quasi-experimental prospective study

et al. 2019

View full text Add to dashboard Cite

ObjectiveTo investigate the effectiveness of radiation protection offered by a newly designed mobile shield barrier for medical personnel during endoscopic retrograde cholangiopancreatography (ERCP).DesignQuasi-experimental prospective study.SettingERCP procedures conducted between October 2016 and June 2017 at a single secondary referral hospital that performs approximately 250 therapeutic ERCP procedures annually.InterventionsThe mobile shield barrier was a custom-made 2 mm Pb shielding plate (width: 120 cm, height: 190 cm) with a 0.5 mm Pb window (width: 115 cm, height: 60 cm) on its upper part was used. Four wheels were attached to the bottom to allow easy moving.Primary and secondary outcome measuresThe radiation doses were measured during ERCP using personal thermoluminescence dosimetry (TLD) badges on both sides of the mobile shield barrier (patient’s side: TLD1 and medical staff’s side: TLD2). The radiation doses were also measured on the outer surface of the thyroid shield of the endoscopist (TLD3), and on the chest area inside the protective apron of the endoscopist (TLD4) and the main assistant (TLD5). The TLD was changed and reported once every 3 months. The radiation dose measured by TLD badges were compared.ResultsDuring the study period, a total of 128 ERCP procedures were performed. The mean fluoroscopy time per procedure was 244.9±257.0 s and the mean number of digital radiographs per procedure was 3.7±1.0. TLD1 (outside the barrier) had a mean radiation dose of 26.85±3.47 mSv and all the other TLDs (inside the barrier) had less than 1 mSv (p<0.001). In the post hoc analysis, the difference between TLD1 and others showed a statistical significance; however, there were no significant differences between the TLDs inside the barrier.ConclusionOur mobile shield barrier was useful to reduce the radiation exposure of medical personnel during ERCP.

show abstract

A novel removable shield attached to C-arm units against scattered X-rays from a patient’s side

Cited by 12 publications

References 13 publications

Construction Shielding Design for Medical X-Ray Imaging Equipment

Construction Shielding Design for Medical X-Ray Imaging Equipment

Strategy to Reduce the Collective Equivalent Dose for the Lens of the Physician’s Eye Using Short Radiation Protection Curtains to Prevent Cataracts

Radiation protection effect of mobile shield barrier for the medical personnel during endoscopic retrograde cholangiopancreatography: a quasi-experimental prospective study

Contact Info

Product

Resources

About