scholarly journals TRIPLE RULE OUT CT ANGIOGRAPHY REDUCES BOTH THE INITIAL CT AND DOWNSTREAM RADIATION DOSE IN THE EVALUATION OF ACUTE CHEST PAIN IN THE EMERGENCY DEPARTMENT.

2011 ◽  
Vol 57 (14) ◽  
pp. E1220 ◽  
Author(s):  
Kenny Lien ◽  
Michael Triolo ◽  
Michael Poon
2016 ◽  
Vol 58 (5) ◽  
pp. 521-527 ◽  
Author(s):  
Hyun Su Kim ◽  
Sung Mok Kim ◽  
Min Jae Cha ◽  
Yoo Na Kim ◽  
Hae Jin Kim ◽  
...  

Background Triple rule-out computed tomography (TRO CT) is a CT protocol designed to simultaneously evaluate the coronary, aorta, and pulmonary arteries. Purpose To evaluate potential diagnostic performance of TRO CT with restricted volume coverage for detection of pulmonary thromboembolism (PTE) and aortic dissection (AD). Material and Methods This study included 1224 consecutive patients with acute chest pain who visited the emergency department and underwent TRO CT using a 128-slice dual-source CT. Image data were reconstructed according to the display field of view (DFOV) of coronary CT angiography (CCTA) and TRO CT protocols in each patient. The presence of PTE and AD was evaluated by independent observers in each DFOV. The radiation dose was calculated to evaluate the potential benefits by restricting z-axis coverage to cardiac scan range instead of the whole thorax. Results Among all patients, 22 cases with PTE (1.9%) and nine cases with AD (0.8%) were found. Except for one PTE case, all cases were detected on both DFOV of TRO CT and CCTA. Mean effective dose for evaluation of entire thorax and cardiac scan coverage were 5.9 ± 1.1 mSv and 3.5 ± 0.7 mSv, respectively. Conclusion Isolated PTE and AD outside the CCTA DFOV rarely occur. Therefore, modified TRO CT protocol using cardiac scan coverage can be adopted to detect PTE and AD with reduced radiation dose.


2012 ◽  
Vol 81 (12) ◽  
pp. 3691-3696 ◽  
Author(s):  
Radko Krissak ◽  
Thomas Henzler ◽  
Anne Prechel ◽  
Miriam Reichert ◽  
Joachim Gruettner ◽  
...  

Author(s):  
Marton-Popovici Monica ◽  
Béla Merkely ◽  
Bálint Szilveszter ◽  
Zsófia Dora Drobni ◽  
Pál Maurovich-Horvat

Background: Acute chest pain is one of the most common reasons for Emergency Department (ED) visits and hospital admissions. As this could represent the first symptom of a lifethreatening condition, urgent identification of the etiology of chest pain is of utmost importance in emergency settings. Such high-risk conditions that can present with acute chest pain in the ED include Acute Coronary Syndromes (ACS), Pulmonary Embolisms (PE) and Acute Aortic Syndromes (AAS). Discussion: The concept of Triple Rule-out Computed Tomographic Angiography (TRO-CTA) for patients presenting with acute chest pain in the ED is based on the use of coronary computed tomographic angiography as a single imaging technique, able to diagnose or exclude three lifethreatening conditions in one single step: ACS, AAS and PE. TRO-CTA protocols have been proved to be efficient in the ED for diagnosis or exclusion of life-threatening conditions and for differentiation between various etiologies of chest pain, and application of the TRO-CTA protocol in the ED for acute chest pain of uncertain etiology has been shown to improve the further clinical evaluation and outcomes of these patients. Conclusion: This review aims to summarize the main indications and techniques used in TRO protocols in EDs, and the role of TRO-CTA protocols in risk stratification of patients with acute chest pain.


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