A Phantom Study to Determine the Optimal Placement of Eye Dosemeters on Interventional Cardiology Staff

Ishii, Hiroki; Chida, Koichi; Satsurai, Ko; Haga, Yoshinori; Kaga, Yuji; Abe, Matanobu; Inaba, Yohei; Zuguchi, Masayuki

doi:10.1093/rpd/ncz027

Cited by 24 publications

(17 citation statements)

References 20 publications

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“…In general, physicians perform their procedures standing on the right side of the patient in IR. An anthropomorphic head phantom (Alderson RANDO, Alderson Research Laboratories, Stamford, USA) was used to simulate a physician, and an acrylic board with a thickness of 20 cm was used to simulate a patient 16 …”

Section: Methodsmentioning

confidence: 99%

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Estimating radiation exposure of the brain of a physician with a protective flap in interventional radiology: A phantom study

Hattori

Monzen

Tamura

et al. 2022

J Applied Clin Med Phys

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Purpose The efficiency of protective equipment for the brain has not been verified at the left anterior oblique (LAO) position, which is commonly used in clinical procedures. The purpose of this study was to investigate radiation exposure of the brain in interventional radiology (IR) and the shielding ability of a new protective flap. Methods We made a flap that combined a protective cap with a left lateral face shield. The flap was made of tungsten‐containing rubber (TCR). An anthropomorphic head phantom was placed at the physician's position, and air kerma rates (μGy/min and μGy/15s) were measured by electronic dosimeter at three locations: the surface of the left side of the head, and the left and right temporal lobes with the protective cap and the flap in fluoroscopy and cine modes. The X‐ray tube was at the lower left side of the physician, and its angles were LAO60 and LAO60CAU40. The tube voltage (95–125 kV), tube current (4.7–732 mA), and air kerma rate (27.8–1078 mGy/min) were automatically adjusted by the X‐ray system. We obtained the cap and the flap shielding efficiencies. Results In cine mode at LAO60CAU40, the shielding efficiencies on the surface of the left side of the head and left temporal lobe with the cap were 92.6% and 5.1%, respectively, and the corresponding shielding efficiencies with the flap were 92.5% and 86.1%, respectively. The flap can reduce radiation exposure of the brain more than the cap alone. Conclusions At the left anterior oblique in interventional radiology, the flap can reduce exposure to the brain.

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Section: Methodsmentioning

confidence: 99%

“…The filters for fluoroscopy and cine modes were set to 0.4 mm Cu and 1.0 mm Al. The X‐ray tube angles included left anterior oblique 60 degrees (LAO60) and left anterior oblique 60 and caudal 40 degrees (LAO60CAU40), which are typical IR conditions in our hospital 16,17 …”

Section: Methodsmentioning

confidence: 99%

Estimating radiation exposure of the brain of a physician with a protective flap in interventional radiology: A phantom study

Hattori

Monzen

Tamura

et al. 2022

J Applied Clin Med Phys

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“…Especially, interventional radiology (IVR) procedures deliver high radiation doses to both the physician and patient [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Furthermore, IVR physicians are at high risk of radiation-induced injury [ 15 , 16 , 17 , 18 , 19 , 20 ]. Thus, radiation evaluation/protection is very important to the IVR physician [ 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Non-Lead Protective Aprons for the Protection of Interventional Radiology Physicians from Radiation Exposure in Clinical Settings: An Initial Study

et al. 2021

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Radiation protection/evaluation during interventional radiology (IVR) poses a very important problem. Although IVR physicians should wear protective aprons, the IVR physician may not tolerate wearing one for long procedures because protective aprons are generally heavy. In fact, orthopedic problems are increasingly reported in IVR physicians due to the strain of wearing heavy protective aprons during IVR. In recent years, non-Pb protective aprons (lighter weight, composite materials) have been developed. Although non-Pb protective aprons are more expensive than Pb protective aprons, the former aprons weigh less. However, whether the protective performance of non-Pb aprons is sufficient in the IVR clinical setting is unclear. This study compared the ability of non-Pb and Pb protective aprons (0.25- and 0.35-mm Pb-equivalents) to protect physicians from scatter radiation in a clinical setting (IVR, cardiac catheterizations, including percutaneous coronary intervention) using an electric personal dosimeter (EPD). For radiation measurements, physicians wore EPDs: One inside a personal protective apron at the chest, and one outside a personal protective apron at the chest. Physician comfort levels in each apron during procedures were also evaluated. As a result, performance (both the shielding effect (98.5%) and comfort (good)) of the non-Pb 0.35-mm-Pb-equivalent protective apron was good in the clinical setting. The radiation-shielding effects of the non-Pb 0.35-mm and Pb 0.35-mm-Pb-equivalent protective aprons were very similar. Therefore, non-Pb 0.35-mm Pb-equivalent protective aprons may be more suitable for providing radiation protection for IVR physicians because the shielding effect and comfort are both good in the clinical IVR setting. As non-Pb protective aprons are nontoxic and weigh less than Pb protective aprons, non-Pb protective aprons will be the preferred type for radiation protection of IVR staff, especially physicians.

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“…Pb glasses may also need to be worn by the medical assisting staff who are present in the room during CT examination. The tube voltage used in CT examination is generally fixed at 120 kV [16] that is typically higher than that in IR [17]. With an increase in the photon energy, the shielding effect of Pb glasses decreases [18].…”

Section: Introductionmentioning

confidence: 99%

Occupational Radiation Dose, Especially for Eye Lens: Hp(3), in Medical Staff Members Involved in Computed Tomography Examinations

Osanai

Sato²,

Sato

et al. 2021

Applied Sciences

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Radiation dose management of medical staff has become increasingly important. Particularly, based on the statement by the International Commission on Radiological Protection (ICRP) in 2011, a new lower equivalent dose limit for the eye lens is being established in each country. Although many reports have discussed the occupational radiation dose in interventional radiology (IR), few studies have examined the dose during computed tomography (CT) examinations. This study investigated the radiation dose exposure to medical staff present in the CT room during irradiation, with particular focus on the exposure to eye lens. The radiation dose exposure to those who assist patients during head, chest and upper abdomen CT examination was measured in a phantom study. The radiation dose exposure with scattered radiation was never negligible (i.e., high); Hp(3) was the highest in head CT examination, at 0.44 mSv per examination. Furthermore, the shielding effect of radiation protection glasses was large, and radiation protection glasses are useful tools for the medical staff who are involved in CT examinations. The justification and optimisation should be carefully considered in assistant actions.

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A Phantom Study to Determine the Optimal Placement of Eye Dosemeters on Interventional Cardiology Staff

Cited by 24 publications

References 20 publications

Estimating radiation exposure of the brain of a physician with a protective flap in interventional radiology: A phantom study

Estimating radiation exposure of the brain of a physician with a protective flap in interventional radiology: A phantom study

Non-Lead Protective Aprons for the Protection of Interventional Radiology Physicians from Radiation Exposure in Clinical Settings: An Initial Study

Occupational Radiation Dose, Especially for Eye Lens: Hp(3), in Medical Staff Members Involved in Computed Tomography Examinations

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