The recent Webinar Wednesday session “Faster Measurement of CTDI and CT Beam Width” presented by RTI Group Training Manager Erik Wikström was eligible for 1 credit from the ACI. It was sponsored by RTI Group.
Wikström discussed ways to reduce the downtime of CT scanners due to quality control or preventive maintenance activities. CTDI is a commonly used exposure index used in computed tomography (CT) to monitor performance. First defined in 1981, it has been subject to updates as CT technology has evolved – from X-ray beams measuring a few mm up to beams of 160mm width. Wikström also looked at CTDI formalism in its different generations and varying methods of measurement and how these are applied.
The webinar provided excellent insights and prompted some great questions during the question-and-answer session. One question was, “How do you know how to convert those in the center of Phantom to do in the periphery?”
Wikström explained that the company has purchased data from manufacturers and others to be able to investigate and research it.
“So, we know the relationship between the dose in the center hole the dose in the peripheral holes,” he added.
Another question Wikström answered was, “How can an ion chamber give any kind of resolution of the CT dose profile?” The answer to this and other questions are available via on-demand viewing at WebinarWednesday.live.
Attendees provided feedback regarding the webinar in a survey that also asked, “Why did you attend today’s webinar? And, was it worth your time?”
“Was interested in seeing more about the Piranha platform. The sales rep in our area was here last week but I was unavailable due to schedule conflicts. So, this coming up was nic,” CE Manager W. Doiel said.
“Part of my job is to measure beam width, so I want to learn more about it. Worth the time? Yes,” Medical Physicist L. Fajardo said.
“To gain insight into QC techniques and measurement. It was worth my time and thank you for the opportunity to view,” Biomed D. Tomczak said.
For more information, visit WebinarWednesday.live.
