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Methods for measuring fluoroscopic skin dose.

Balter S - Pediatr Radiol (2006)

Bottom Line: This paper briefly reviews available technologies for measuring or estimating patient skin dose in the interventional fluoroscopic environment.

View Article: PubMed Central - PubMed

Affiliation: Department of Medicine, Columbia University Medical Center, 630 West 168th St., New York, NY 10032, USA. stb2001@nyp.org

ABSTRACT
This paper briefly reviews available technologies for measuring or estimating patient skin dose in the interventional fluoroscopic environment.

Show MeSH

Related in: MedlinePlus

Dose reference points. The IEC reference point is defined relative to the isocenter of the imaging system. It is independent of SID. The FDA measurement point is defined relative to the image receptor at any SID. This point moves away from the focal spot as SID increases
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Fig1: Dose reference points. The IEC reference point is defined relative to the isocenter of the imaging system. It is independent of SID. The FDA measurement point is defined relative to the image receptor at any SID. This point moves away from the focal spot as SID increases

Mentions: FDA regulations limit table-top exposure rate to 10 R/min. Most C-arm and isocentric fluoroscopes will permit smaller source-to-skin distances (SSD) than is possible in a GI system. The FDA goes on to define its C-arm measurement point as 30 cm in front of the image receptor for any source-to-image-receptor distance (SID). Fluoroscopes with SID tracking maintain the 10 R/min limit 30 cm in front of the image receptor at any SID. Actual maximum skin exposure rates delivered by these systems will greatly exceed 10 R/min when operated at maximum SID. Figure 1 illustrates the relationships between the IEC and FDA measurement points.Fig. 1


Methods for measuring fluoroscopic skin dose.

Balter S - Pediatr Radiol (2006)

Dose reference points. The IEC reference point is defined relative to the isocenter of the imaging system. It is independent of SID. The FDA measurement point is defined relative to the image receptor at any SID. This point moves away from the focal spot as SID increases
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2663643&req=5

Fig1: Dose reference points. The IEC reference point is defined relative to the isocenter of the imaging system. It is independent of SID. The FDA measurement point is defined relative to the image receptor at any SID. This point moves away from the focal spot as SID increases
Mentions: FDA regulations limit table-top exposure rate to 10 R/min. Most C-arm and isocentric fluoroscopes will permit smaller source-to-skin distances (SSD) than is possible in a GI system. The FDA goes on to define its C-arm measurement point as 30 cm in front of the image receptor for any source-to-image-receptor distance (SID). Fluoroscopes with SID tracking maintain the 10 R/min limit 30 cm in front of the image receptor at any SID. Actual maximum skin exposure rates delivered by these systems will greatly exceed 10 R/min when operated at maximum SID. Figure 1 illustrates the relationships between the IEC and FDA measurement points.Fig. 1

Bottom Line: This paper briefly reviews available technologies for measuring or estimating patient skin dose in the interventional fluoroscopic environment.

View Article: PubMed Central - PubMed

Affiliation: Department of Medicine, Columbia University Medical Center, 630 West 168th St., New York, NY 10032, USA. stb2001@nyp.org

ABSTRACT
This paper briefly reviews available technologies for measuring or estimating patient skin dose in the interventional fluoroscopic environment.

Show MeSH
Related in: MedlinePlus