Nonrigid registration-based coronary artery motion correction for cardiac computed tomography

2012 ◽  
Vol 39 (7Part1) ◽  
pp. 4245-4254 ◽  
Author(s):  
Roshni Bhagalia ◽  
Jed D. Pack ◽  
James V. Miller ◽  
Maria Iatrou
Keyword(s):  
Computed Tomography ◽  
Coronary Artery ◽  
Motion Correction ◽  
Cardiac Computed Tomography ◽  
Nonrigid Registration ◽  
Coronary Artery Motion

Automatic Determination of Differential Coronary Artery Motion Minima for Cardiac Computed Tomography Optimal Phase Selection

2015 ◽  
Vol 22 (6) ◽  
pp. 697-703 ◽  
Author(s):  
Jonathan Lessick ◽  
Oliver Klass ◽  
Sabine Wuchenauer ◽  
Matthew J. Walker ◽  
Holger Schmitt ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Artery ◽  
Cardiac Computed Tomography ◽  
Automatic Determination ◽  
Phase Selection ◽  
Coronary Artery Motion

scholarly journals Appropriate utilization of cardiac computed tomography for the assessment of stable coronary artery disease

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Michael Hammer ◽  
Muhtashim Mian ◽  
Levi Elhadad ◽  
Mary Li ◽  
Idan Roifman
Keyword(s):  
Computed Tomography ◽  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Cardiac Imaging ◽  
Cardiac Computed Tomography ◽  
The United States ◽  
Appropriate Use ◽  
Potential Cost ◽  
Cardiac Computed Tomography Angiography ◽  
Artery Disease

Abstract Background Appropriate use criteria (AUC) have been developed in response to growth in cardiac imaging utilization and concern regarding associated costs. Cardiac computed tomography angiography (CCTA) has emerged as an important modality in the evaluation of coronary artery disease, however its appropriate utilization in actual practice is uncertain. Our objective was to determine the appropriate utilization of CCTA in a large quaternary care institution and to compare appropriate utilization pre and post publication of the 2013 AUC guidelines. We hypothesized that the proportion of appropriate CCTA utilization will be similar to those of other comparable cardiac imaging modalities and that there would be a significant increase in appropriate use post AUC publication. Methods We employed a retrospective cohort study design of 2577 consecutive patients undergoing CCTA between January 1, 2012 and December 30, 2016. An appropriateness category was assigned for each CCTA. Appropriateness classifications were compared pre- and post- AUC publication via the chi-square test. Results Overall, 83.5% of CCTAs were deemed to be appropriate based on the AUC. Before the AUC publication, 75.0% of CCTAs were classified as appropriate whereas after the AUC publication, 88.0% were classified as appropriate (p < 0.001). The increase in appropriate utilization, when extrapolated to the Medicare population of the United States, was associated with potential cost savings of approximately $57 million per year. Conclusions We report a high rate of appropriate use of CCTA and a significant increase in the proportion of CCTAs classified as appropriate after the AUC publication.

Abstract 11726: Novel Non-Invasive Method to Estimate Myocardial Mass at Risk Calculated From Cardiac Computed Tomography Data: Validation Study Using Angiographic Myocardial Jeopardy Scores in Patients With Single Vessel Disease

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Seiko IDE ◽  
Satoru Sumitsuji ◽  
Kensuke Yokoi ◽  
Masatoki Yoshida ◽  
Isamu Mizote ◽  
...  
Keyword(s):  
Computed Tomography ◽  
At Risk ◽  
Heart Disease ◽  
Coronary Artery ◽  
Cardiac Computed Tomography ◽  
Myocardial Mass ◽  
Non Invasive ◽  
Vessel Disease ◽  
Single Vessel ◽  
Single Vessel Disease

Background: The myocardial mass at risk (MMAR), representing volume of myocardium distal to culprit lesion, is one of important factors for predicting adverse cardiac event in ischemic heart disease. However, current non-invasive cardiac imaging fails to quantify MMAR in patients with stable coronary artery disease. We have developed a new software calculating MMAR of any designated coronary artery by reconstructing the 3-dimensional-volume-data of cardiac computed tomography (CCT). The novel index, ratio of MMAR to whole left ventricular volume (%LV-MMAR), calculated with this software would be appealing to obtain MMAR objectively. This study aims to compare the %LV-MMAR with Bypass Angioplasty Revascularization Investigation (BARI) and modified Albert Provincial Project for Outcome Assessment in Coronary Heart Disease (APPROACH) scores, both of which are invasive angiographic methods widely used to estimate MMAR, in patients with single-vessel disease. Methods: Between April 2008 and March 2014, patients suspected of effort angina pectoris without history of previous myocardial infarction were assessed with CCT and invasive coronary angiography. Of those, 48 patients who were revealed single-vessel disease (left anterior descending artery (LAD): n=22, left circumflex artery (LCX): n=11 and right coronary artery (RCA): n=15) were included in this study. %LV-MMAR was calculated on the software. BARI and modified APPROACH score were calculated and compared with %LV-MMAR. Results: Mean %LV-MMAR was 27.6 [18.2-37.1] %. BARI and APPROACH scores showed a significant correlation (r=0.92, p<0.0001). Also, a significant correlation was observed between %LV-MMAR versus BARI and %LV-MMAR versus APPROACH (r=0.95, p<0.0001 and r=0.9, p<0.0001, respectively). %LV-MMAR showed significant correlation with BARI and APPROACH scores in all vessels; LAD (r=0.95, p<0.0001 and r=0.91, p<0.0001, respectively), LCX (r=0.91, p=0.0001 and r=0.83, p=0.0002, respectively) and RCA (r=0.92, p<0.0001 and r=0.85, p<0.0001, respectively). Conclusions: This study revealed %LV-MMAR, calculated from CCT data on novel software, to be a promising index for estimating perfusion territory noninvasively in good agreement with BARI and modified APPROACH score.

Spontaneous coronary artery dissection: how often do we miss this diagnosis? The role of cardiac computed tomography angiography

2019 ◽  
Vol 15 (5) ◽  
pp. 333-338 ◽  
Author(s):  
Giuliana Capretti ◽  
Satoru Mitomo ◽  
Manuela Giglio ◽  
Antonio Colombo ◽  
Alaide Chieffo
Keyword(s):  
Computed Tomography ◽  
Coronary Artery ◽  
Young Women ◽  
Computed Tomography Angiography ◽  
Cardiac Computed Tomography ◽  
Artery Dissection ◽  
Spontaneous Coronary Artery Dissection ◽  
Coronary Artery Dissection ◽  
Cardiac Computed Tomography Angiography

Spontaneous coronary artery dissection (SCAD) is an important cause of acute coronary syndrome particularly among young women. Although coronary angiogram (CAG) is the gold standard exam for the diagnosis, SCAD may be missed by CAG alone. Our case series illustrates the adjunctive role of cardiac computed tomography angiography (cCTA) to CAG in ascertaining the diagnosis of SCAD. Three young women were admitted with ST-segment elevation myocardial infarction. CAG showed no significant coronary artery stenosis. In two patients, cCTA performed after CAG revealed an intramural hematoma compressing the coronary lumen. In one patient, SCAD was initially misdiagnosed as Takotsubo cardiomyopathy and cCTA performed 1 month later allowed to make the correct diagnosis of SCAD assessing the spontaneous healing of the dissected vessel.

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