Protecting interventional radiology and cardiology staff: Are current designs of lead glasses and eye dosemeters fit for purpose?

Martin, C J

doi:10.1088/1361-6498/aabd4c

Cited by 9 publications

(7 citation statements)

References 4 publications

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“…During IR procedures, the physician does not look at the patient, rather viewing a monitor directly in front. Thus, the eyes and surrounding tissues are exposed to x-rays scattered from the left and below that pass through the gaps between the physician's head and the lead glasses [33,59]. In one previous study, over-glasses-type eyewear was less effective than regular eyewear when the scattered radiation came from the left and below.…”

Section: Discussionmentioning

confidence: 99%

Comparison of shielding effects of over-glasses-type and regular eyewear in terms of occupational eye dose reduction

Shindo,

Ohno,

Yamamoto

et al. 2024

J. Radiol. Prot.

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Given the new recommendations for occupational eye lens doses, various lead glasses have been used to reduce irradiation of interventional radiologists. However, the protection afforded by lead glasses over prescription glasses (thus over-glasses-type eyewear) has not been considered in detail. We used a phantom to compare the protective effects of such eyewear and regular eyewear of 0.07-mm lead-equivalent thickness. The shielding rates behind the eyewear and on the surface of the left eye of an anthropomorphic phantom were calculated. The left eye of the phantom was irradiated at various angles and the shielding effects were evaluated. We measured the radiation dose to the left side of the phantom using RPLDs attached to the left eye and to the surface/back of the left eyewear. Over-glasses-type eyewear afforded good protection against X-rays from the left and below; the average shielding rates on the surface of the left eye ranged from 0.70–0.72. In clinical settings, scattered radiation is incident on physicians’ eyes from the left and below, and through any gap in lead glasses. Over-glasses-type eyewear afforded better protection than regular eyewear of the same lead-equivalent thickness at the irradiation angles of concern in clinical settings. Although clinical evaluation is needed, we suggest over-glasses-type Pb eyewear even for physicians who do not wear prescription glasses.

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Section: Discussionmentioning

confidence: 99%

Comparison of shielding effects of over-glasses-type and regular eyewear in terms of occupational eye dose reduction

Shindo,

Ohno,

Yamamoto

et al. 2024

J. Radiol. Prot.

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“…Thus, the DOSIRIS™ is a useful lens dosimeter. Alternative options that are being considered that use a dosimeter clipped onto the inside of the lead glass lenses may be shielded from x-rays coming from the side of the operator, which will be incident on the eye, and thus could significantly underestimate the dose to the eye lens [26]. This DOSIRIS™ dosimeter should avoid that problem.…”

Section: Discussionmentioning

confidence: 99%

“…The DOSIRIS™ (Institute for Radiological Protection and Nuclear Safety; IRSN, France) is a dedicated, direct eye lens dosimeter that specifically measures the lens Hp(3) dose [25]. Since the headband enables the DOSIRIS™ dosimeter to be worn both adjacent to the eye and in contact with the skin, it can potentially be a viable technique for giving relatively accurate values for eye dose from monitoring when lead glasses are worn (figure 1) [26].…”

Section: Introductionmentioning

confidence: 99%

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Performance of the DOSIRIS™ eye lens dosimeter

et al. 2019

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Monitoring and protecting of occupational eye doses in interventional radiology (IR) are very important matters. DOSIRIS™ is the useful solution to estimate the 3 mm dose-equivalent (Hp(3)), and it can be worn behind lead glasses. And DOSIRIS™, adjustable according to 3 axes, it is ideally placed as close to the eye and in contact with the skin. So, DOSIRIS™ will be suitable eye lens dosimeter. However, the fundamental characteristics of the DOSIRIS™ in the diagnostic x-ray energy domain (including that of IR x-ray systems) remain unclear. Here, we evaluated the performance of the dosimeter in that energy range. As a result, the DOSIRIS™ has good fundamental characteristics (batch uniformity, dose linearity, energy dependence, and angular dependence) in the diagnostic x-ray energy domain. We conclude that the DOSIRIS™ has satisfactory basic performance for occupational eye dosimetry in diagnostic x-ray energy settings (including IR x-ray systems).

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“…Several previous studies about the effects of radioprotective glasses have focused on interventional radiology (IR) physicians [2][3][4][5][6][7][8][9][10][11]; however, only a few studies focused on medical staff assisting patients during computed tomography (CT) examinations [12][13][14]. The staff should stay outside the examination room for good radiation protection practice, but it is not always possible for them due to several reasons such as restraining patient's body movement and assisting ventilation.…”

Section: Introductionmentioning

confidence: 99%

Eye lens dose for medical staff assisting patients during computed tomography: comparison of several types of radioprotective glasses

et al. 2023

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Medical staff sometimes assists patients in the examination room during computed tomography (CT) scans for several purposes. This study aimed to investigate the dose reduction effects of four radioprotective glasses with different lead equivalents and shield shapes. A medical staff phantom was positioned assuming body movement restraint of the patient during chest CT, and air kerma at the eye surfaces of the medical staff phantom and inside the lens of the four types of radioprotective glasses were measured by changing the distance of the staff phantom from the gantry, eye height, and width of the nose pad. The air kerma at the right eye surface with glasses of 0.50–0.75 mmPb and 0.07 mmPb was approximately 83.5% and 58.0%, respectively, lower than that without radioprotective glasses. The air kerma at eye surfaces decreased with all types of glasses by 67.4%–78.2% by increasing the distance from the CT gantry to the staff phantom from 25 cm to 65 cm. The air kerma at the left eye surface was larger except for the glasses with the highest lead equivalent (0.75 mmPb at the front) when the height of the eye lens for the medical staff phantom was higher. The air kerma on the left eye surface decreased by 46.9% with the widest nose pad width compared to the smallest nose pad width for the glasses with adjustable nose pad width. The radioprotective glasses for staff assisting patients during CT examinations should have a large lead equivalent and no gap around the nose and under the front lens.

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Protecting interventional radiology and cardiology staff: Are current designs of lead glasses and eye dosemeters fit for purpose?

Cited by 9 publications

References 4 publications

Comparison of shielding effects of over-glasses-type and regular eyewear in terms of occupational eye dose reduction

Comparison of shielding effects of over-glasses-type and regular eyewear in terms of occupational eye dose reduction

Performance of the DOSIRIS™ eye lens dosimeter

Eye lens dose for medical staff assisting patients during computed tomography: comparison of several types of radioprotective glasses

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