Improving predictive value of transient ischemic dilation ratio after correction based on the left ventricular mass
Publish place: Iranian Journal of Nuclear Medicine، Vol: 31، Issue: 1
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
View: 200
This Paper With 7 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_IRJNM-31-1_008
تاریخ نمایه سازی: 4 بهمن 1401
Abstract:
Introduction: For the interpretation of myocardial perfusion imaging, considering non-perfusion variables, such as transient ischemic dilatation (TID), are also important in diagnostic and prognostic evaluation of a patient. TID has a relatively high false positive and false negative results, which reduces its diagnostic and prognostic values. In this study, we aimed to compare the accuracy of TID after normalization based on changes in LV wall mass.Methods: Patients referred for dipyridamole myocardial perfusion imaging single-photon emission computed tomography (MPI/SPECT), one to two year prior to the study with TID ratio >۱ were enrolled. Patients with any previous history of revascularization and structural heart disease were excluded. Follow-up was done by phone call. The occurrence of cardiac death, myocardial infarction, revascularization or evidence of abnormal angiography during one year after MPI was considered positive for short-term cardiac events. The corrected TID (cTID) was calculated by the following formula: cTID = TID/(Wallstress/Wallrest).Results: Among ۱۹۶ participants, ۳۰ (۱۵%) had cardiovascular events during the follow-up. The area under the receiver operating characteristic (ROC) curve for the short-term prognosis of the cardiac events were ۰.۵۷ and ۰.۵۰ for cTID and TID with a p-value of ۰.۱۷ and ۰.۹۲, respectively. Considering the best cut-off points that were achieved by ROC curves, cTID showed significant odds ratio (OR: ۲.۵۳) for prediction of short-term cardiac events, while respecting, TID failed to be statistically significant.Conclusion: Making correction on TID using LV wall volumes can improve short-term prognostic value of this variable.
Keywords:
Authors
Tahereh Ghaedian
Nuclear Medicine and Molecular Imaging Research Center, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
Mohammadreza Hemmatpour
Nuclear Medicine and Molecular Imaging Research Center, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
Mahdi Haghighatafshar
Nuclear Medicine and Molecular Imaging Research Center, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :