The breast: in-plane x-ray protection during diagnostic thoracic CT--shielding with bismuth radioprotective garments.

Hopper, Kenneth D.; King, Steven H.; Lobell, M E; TenHave, Thomas R.; Weaver, J S

doi:10.1148/radiology.205.3.9393547

Cited by 179 publications

(97 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Also, the chest CT provides the dose of 20 to 50 mGy to the woman's breast of an average size. The dose is similar to the amount shown in the two-view mammography examination carried out 10 to 25 times [17]. It is necessary to justify the CT examination of fertile women through the point of view indicating that the level of danger regarding breast cancer caused by radiation is high in the subject group.…”

Section: Effective Dosementioning

confidence: 80%

Comparison of the Breast Dose based on the Existence of the Bismuth Breast Protection Shield for Automatic Exposure Control and Manual Exposure Control with the Coronary Artery CT Angiography

Kang¹,

Kim²

2011

International Journal of Contents

View full text Add to dashboard Cite

The effective dose and the organ absorbed dose, which are given to a breast in the cases of using and not using the bismuth breast protection shield for the protection of a breast with the coronary artery CT angiography, have been measured and compared for the manual exposure control (MEC)and the automatic exposure control (AEC). In the cases of using and not using the bismuth breast protection shield, it has been found that the measured dose shows the reduction of about 23 to 26% for the MEC and about 22 to 25% for the AEC when the shield is used compared to the case of not using it. By comparing the shield and non-shield cases for the AEC and the MEC, it can be said that the value measured by carrying out the scanning process with the AEC mode has decreased by about 24 to 30% compared to the case of applying the MEC mode. Such a result shows that it is recommended to use the AEC modefor the reduction of the patient's exposure dose during the CT examination.

show abstract

Section: Effective Dosementioning

confidence: 80%

Comparison of the Breast Dose based on the Existence of the Bismuth Breast Protection Shield for Automatic Exposure Control and Manual Exposure Control with the Coronary Artery CT Angiography

Kang¹,

Kim²

2011

International Journal of Contents

View full text Add to dashboard Cite

show abstract

“…[18][19][20] The factors that need to be modulated are the value of the tube current and its duration, which need to be as low as possible during specific phases of the cardiac cycle, and heart rate needs to be regular and lowered in order to increase the recording time up to 75% of the corresponding cardiac phase. 21,22 …”

Section: Post-processing Filtersmentioning

confidence: 99%

Actual Dose-Reduction Strategies in Cardiac Computed Tomography

Cernica¹,

Hodaş²,

Himcinschi³

et al. 2017

Journal of Interdisciplinary Medicine

View full text Add to dashboard Cite

Computed tomography (CT) in cardiac examination is a powerful imaging tool that has developed rapidly during the last decade and continues to increase its potential by bringing novel technologies. Due to its noninvasive character, cardiac CT became a largely used method in detecting coronary diseases or functional issues at the expense of conventional coronary angiography. The accuracy of images has also increased, especially since new generation dual-source multi-slice detectors were developed. Although there are continuous improvements that serve to gain better-quality images, thus increasing their diagnostic accuracy, there is an inconvenient that became a serious topic for debate in the current literature: exposure to higher doses of radiation during cardiac CT examinations. Fortunately, physicians and manufacturers are taking into consideration the need to apply new strategies for radiation dose-reduction. Thus, this objective can be achieved by using patient-tailored dose-reduction strategies and by modulating the technical features of the CT scanners in order to gather highquality images with minimal radiation exposure. The aim of this manuscript was to review the current literature data on dose-reduction strategies that are used for cardiovascular computed tomography scans.

show abstract

“…This application can be very useful in Clin Transl Imaging (2014) 2:557-569 565 SPECT/CT systems for sparing the lens in CT head acquisitions, as SPECT/CT can acquire only axial and not transaxial images with tilted gantry, because of problems in image registration. Bismuth shielding, placed over the organ of interest to attenuate the X-ray beam entering the patient, has also been used to reduce the dose from CT to anterior radiosensitive organs, such as the breast, lens of the eye, and thyroid [53]. However, the AAPM [54] recommends that the use of bismuth shielding should be carefully considered and that organ-based tube current modulation should be implemented when possible.…”

Section: Organ-based and Automatic Kv Selectionmentioning

confidence: 99%

SPECT/CT radiation dosimetry

Ferrari

Marco

Origgi

et al. 2014

Clin Transl Imaging

View full text Add to dashboard Cite

Single-photon emission computed tomography combined with X-ray computed tomography (SPECT/CT) improves diagnostic accuracy by allowing better localization and definition of scintigraphic findings. However, the combined acquisition of functional and anatomical images can substantially increase radiation exposure to patients, particularly when using a hybrid system with diagnostic CT capabilities. At the same time, the introduction of new SPECT and CT reconstruction techniques (based on the use of iterative algorithms), and of CT automatic dose modulation techniques, has opened the way for possible reductions in patient dose and/or improvements of image quality. It is, therefore, essential to carefully balance the diagnostic needs and the radiation protection requirements, optimizing the choice of radiopharmaceutical and administered activity, and the image acquisition and processing modalities both in SPECT and in CT. This is particularly important in the case of pediatric examinations. In short, to maximize benefit to patients, SPECT/CT studies have to be optimized, adopting dose-reduction measures both from CT and SPECT practices. In SPECT, shorter lived gamma emitters should be preferred and the amount of activity administered must be carefully adjusted to the patient's size. In CT, scanning parameters (scanning length, tube current, tube voltage, filtration, collimation, slice thickness, pitch, automatic dose modulation method, reconstruction technique, and image processing) must be chosen carefully, remembering that normally the scanned images are used only for the purposes of attenuation correction and/or a more precise localization of scintigraphic findings, which require lower quality and consequently entail a lower dose to the patient. On the other hand, good quality diagnostic CT images, obtained at higher dose levels, are necessary if a diagnostic CT examination must still be planned for the patient. The purpose of this review on SPECT/CT radiation dosimetry is to provide updated information on the total effective dose and total equivalent doses to critical organs due to both radiopharmaceutical administration and CT scan modality for both adults and pediatric patients. The use of new solid-state detectors (cadmium zinc telluride) for SPECT cameras will also be considered. Finally, the means of easily determining SPECT/CT dose to patients will be provided.

show abstract

The breast: in-plane x-ray protection during diagnostic thoracic CT--shielding with bismuth radioprotective garments.

Abstract: The use of in-plane overlying bismuth radioprotective latex manufactured into form-fitting garments did not affect the diagnostic CT image but reduced the amount of radiation to radiosensitive superficial structures.

Cited by 179 publications

References 0 publications

Comparison of the Breast Dose based on the Existence of the Bismuth Breast Protection Shield for Automatic Exposure Control and Manual Exposure Control with the Coronary Artery CT Angiography

Comparison of the Breast Dose based on the Existence of the Bismuth Breast Protection Shield for Automatic Exposure Control and Manual Exposure Control with the Coronary Artery CT Angiography

Actual Dose-Reduction Strategies in Cardiac Computed Tomography

SPECT/CT radiation dosimetry

Contact Info

Product

Resources

About