Three Cases of Rare Systematic Errors Due To Unstable PM Tube Gain in Gated Myocardial Perfusion Imaging
Research/Original Article (دارای رتبه معتبر)
IntroductionMyocardial perfusion imaging (MPI) is a valuable diagnostic tool for the diagnosis of coronary artery disease (CAD) and is susceptible to a variety of artifacts, which degrade image quality and decrease diagnostic accuracy. Pitfalls and Artifacts in nuclear medicine imaging are not rare and could be classified into issues related to patients, equipment, and technologist. One of these artifacts is unstable PMT gain, which is rare and related to equipment. It is crucial for nuclear physicians to be aware of potential artifacts and their potential effect on image quality. This knowledge helps them to prevent or correct these artifacts if possible and if not, consider the potential effect of these artifacts on image pattern and quality. Some of these artifacts are preventable by routine quality control procedures, but some other artifacts may occur regarding quality control procedures.
Material and MethodsThree different female subjects 55, 57, and 61 years old with a history of atypical chest pain were referred to our department for myocardial perfusion imaging. MPI was performed according to standard protocols and stress, and rest phases were done.
ResultsThese three cases had different patterns of perfusion abnormalities due to interruption of count detection for a few seconds in some frames during acquisition that was due to voltage drop that leads to unstable PM tube gain.
ConclusionSystematic errors due to voltage drops are not common, and they are not routinely sort of suspicion to artifactual perfusion abnormalities but they may cause misinterpretation of reports of MPI, and we should be aware of them.
Iranian Journal of Medical Physics, Volume:20 Issue: 1, Jan-Feb 2023
7 to 10
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 990,000ريال میتوانید 60 عنوان مطلب دانلود کنید!
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Subscribe magiran.com for 50 € euros via PayPal and download 60 articles during a year.
Please contact us to subscribe your university or library for unlimited access!