- “ In conclusion we believe that the ways in which bismuth shielding can hurt outnumber the ways in which it helps. Although their use is well intentioned, and we applaud the imaging community’s efforts toward safe and effective use of CT imaging, bismuth shields waste radiation dose to patients and degrade image quality.”
Bismuth Shields for CT Dose Reduction: Do they Help or Hurt?
McCollough CH et al.
J American College of Radiol Dec 2011; Vol 8, No 12 pg 878-879 - “ In conclusion we believe that the ways in which bismuth shielding can hurt outnumber the ways in which it helps.”
Bismuth Shields for CT Dose Reduction: Do they Help or Hurt?
McCollough CH et al.
J American College of Radiol Dec 2011; Vol 8, No 12 pg 878-879 - “ Clinical studies of bismuth shielding have shown a 29% decrease in radiation dose to the female breast and a 40% decrease to the adult female breast.”
CT Radiation Dose: What Can You Do Right Now in Your Practice?
Coakley FV et al
AJR 2011; 196:619-625 - “ While the role of bismuth shields continues to be debated, we have successfully implemented a policy of routinely using bismuth breast shields on all woman.”
CT Radiation Dose: What Can You Do Right Now in Your Practice?
Coakley FV et al
AJR 2011; 196:619-625 - Bismuth Breast Shields: Facts
- Some suggest placement after the topogram has been done
- Wrap in sheet or blanket to avoid skin contact. Touching the skin creates artifact and image noise
- Wrapping the shield in towel allows multi-use of the shields which makes the process low cost - “ Potential measures include provision of patient information material, review of CT protocols and indications, promotion of alternative studies, use of decision support software, automatic tube current modulation, bismuth shields, improved image reconstruction algorithms, enpowerment of technologists to adjust protocols, and calculation of radiation dose for possible reporting.”
CT Radiation Dose: What Can You Do Right Now in Your Practice?
Coakley FV et al
AJR 2011; 196:619-625 - "Bismuth in-plane shielding for routine thoracic MDCT decreased radiation dose to the breast without qualitative changes in image quality."
Female Breast Radiation Exposure During Thorax Multidetector Computed Tomography and the Effectiveness of Bismuth Breast Shield to Reduce Breast Radiation Dose
Yilmaz MH et al.
J Comput Assist Tomogr 2007; 31:138-142 - "The breast shield enabled a 40.5% decrease in radiation dose to the breast."
Female Breast Radiation Exposure During Thorax Multidetector Computed Tomography and the Effectiveness of Bismuth Breast Shield to Reduce Breast Radiation Dose
Yilmaz MH et al.
J Comput Assist Tomogr 2007; 31:138-142
|
