CTDIvol vs DLP – a simple explanation

What do they represent? CTDIvol is based on measurements obtained when scanning either a 16cm or 32 cm phantom.   Essentially, it represents scanner output.  DLP is derived from CTDIvol, but incorporates a scan length component.  Both function as reasonable proxies for absorbed dose but do not represent the actual patient dose.  In other words, if… Read More

Expanding Your Use of the DIR to Include Fluoroscopy, Nuclear Medicine, and Digital Radiography Doses

Here is an interesting article on the ACR’s Dose Index Registry (DIR). It is titled “Physicist Spotlight: Meet the Chair of the ACR Dose Index Registry Committee.” I encourage you to pay specific attention to the article’s discussion of the DIR’s ability to accept and compare doses, not only from CT scanners, but now also… Read More

New Scanner Dose Review – A Unique DoseID Service

Generally speaking, today’s scanners are much more dose efficient than the ones they are replacing. When a site installs a new scanner I like to provide them with an overview of just how their doses changed so they can share their success within the institution. One of my clients installed a new scanner a few… Read More

DoseID: An affordable, effective, and staff friendly Dose Monitoring Solution

DoseID is an affordable, turn-key CT Dose Monitoring service for hospitals, health systems, imaging centers, and physician practices. Our DoseID service leverages your participation in the ACR’s Dose Index Registry to comply with The Joint Commission’s requirements to create Expected Dose Ranges for every study and then identify individual exams that exceed their expected range;… Read More

Dose Reduction Success Stories

I want to share some exciting information concerning one of our client’s dose reduction successes. I recently completed an analysis of this site’s doses (Total CTDIvol) from 2013 through YTD 2019. This is interesting because during this time period the equipment did not change. The chart below illustrates what can be accomplished using the ACR’s… Read More