I just recently had a stress nuclear study and was told that I did very well in all phases.I just recieved a copy of the Doctors office notes that talks about "abnormal stress imaging study"with reference to "diaphragmatic attenuation".I am asking for information that would explain the condition mentioned and how it relates the most favorable results I recieved.There was no mention of any other problems and was told I did not have to return for testing for 2 year.
I am 73years old,in very good health,excersing both with weight training(3xweekly) and cardio(7xweekly),171 lbs.,5'10" ,b/p 121/70 with med.and body fat at appx.20%
Avoidance of falsely positive results depends on distinguishing reality from artifact, in turn depending on images of highest quality. In radionuclide cardiac imaging, an inferior wall artifactual defect, so called diaphragmatic attenuation, is particularly common and vexing
The most common artifact on thallium scans in our laboratory has been posterior myocardial attenuation, mostly in males. In the past this has been thought due to the position of the diaphragm. Diaphragm is of no significance and a misnomer, but further evaluation for posterior myocardium attenuation (medically significant) to determine if there is a posterior defect and rule out an artifact. "It is suggested that a male with a flat, wide chest is more prone to posterior myocardial attenuation. If a posterior defect is present in this type of patient it is suggested he be further evaluated to rule out artifact".
For some insight mild reduced tracer "uptake" in the inferior wall is commonly seen in men with large chests. The inferior wall is furthest away from the detector, photons from the inferior wall thus travel longer distances and are attenuated (thinning, weakening, diluting), giving the appearance of reduced uptake.
"The phenomenon is often called diaphragmatic attenuation, which is a misnomer. The diaphragm is very thin and does not couse the attenuation, the diaphragmatic portion of the LV ( the inferior wall) is the affected, though".
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.