Monthly Archives: February 2011

Computed Radiology Vs. Digital Radiology

Wondering which digital system is right for you?
There are as many choices in digital imaging as there are letters in the alphabet (CR, DR, CCD, GadOX- aSI, CsI, PACS, and DICOM).

Because the purchase for digital imaging is a large initial investment, most purchasers want confidence in the system they decide on.  The solution should meet both the needs of their image quality standards as well as fit reasonably within the budget while providing a return on the investment within the first year of purchase.

Computed radiology or CR has typically been the method of choice for private practice physicians that meets both expectations, however flat panel solutions (DR) are now close enough to the money mark that they are catching a second glance.

A study published in 2005 by Radiology compares the resolution of the Flat Panel (DR) solution with a CR solution for comparison in image quality.  Both prove acceptable, however, with the break in pricing for flat panels, which would you choose?

Whats the Big Deal with the X-ray Scanners in the Airport? Are They Safe?

The National Council on Radiation Protection and Measurements has released a Presidential Report on Radiation Protection Advice:  “Screening of Humans for Security Purposes Using Ionizing Radiation Scanning Systems“.

The report talks of the two different systems used in screening-  Backscatter Systems, and Transmission Systems.    It also talks about the future devices that are being considered for use in “scanning” for security.

Backscatter Systems, I will admit, sounds much more alarming for those of us who are familiar with radiology.  The backscatter systems use designated technique settings of 50 kVp and 5 mA, or 125 kVp and 4 mA.  The scan takes about 8 seconds according to the report.  As I consider the published techniques for the backscatter system, the amount of filtration, and the “collimated area”, I wonder just how accurate is the effective dose published in the report. You can read the full report here.

Send me your thoughts on the “Low Dose” theory.