FW: [Educators] RE: Transducer Orientation in DMS

From: DuBose, Terry (DuboseTerryJ@uams.edu)
Mon Apr 9 09:11:43 2007


-----Original Message----- From: webmaster@sdms.org [mailto:webmaster@sdms.org] Sent: Friday, April 06, 2007 8:16 PM To: forums@sdms.org Subject: [Educators] RE: Transducer Orientation in DMS

There has been a new posting in the SDMS Discussion Forums Written by: jpbaker http://www.sdms.org/members/forums/link.asp?TOPIC_ID=2174

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This determination was made by the AIUM standards committee in the early 1970's and George Leopald of UCSD was the chair at the time, if my memory serves me correctly. I am currrently in SD I will try and reach him for you.

quote: OK, I know this seems like a "duh" question but it has come up (from a radiologist) and I have searched every resource I have with no definitive answer.

In DMS, is the transducer orientation "toward the patient's right side" for transverse plane imaging stated anywhere??? I can find the longitudinal or sagittal orientation description with instruction to rotate the transducer 90 degrees for transverse axis (of organ), but nowhere does is it stated that the orientation indicator/notch should point towards the patient's right side in transverse (rotating the transducer counterclockwise from sag). I have checked all the way back to Sarti and Sample, Bartrum and Crow, original Kawamura...no luck.

Is this something that we intuitively did because we are viewing our transverse images from the patient's feet (optimistic view)? If so, then our midline and right side imaging makes very good common sense. But when we go the left side, even if we can image with the beam from anterior to posterior, the left side of the image is now technically demonstrating the midline of the patient with the transducer orientation extended to meet that "towards the patient's right" practice.

When imaging the normal left kidney I have always labeled the image as "Kidney, Left, TRANS (organ axis), Sup/Mid/Inf" and try to show the hilum as medially orientated. If there was pathology, I would added labeling information if needed.

So help me find a reference or give me better words to explain what I know to be right OR tell me I'm way off track. It's hard to think that I've been doing it wrong for 25 years!

Thanks in advance! :)

Regina Swearengin, BS, RDMS Austin Community College Sonography Programs

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