Background: Computed tomographic (CT) imaging in suspected pulmonary artery embolism represents the standard procedure. Studies without iterative reconstruction proved beneficial using increased iodine delivery rate (IDR). This study compares image quality in pulmonary arteries on iteratively reconstructed CT images of patients with suspected pulmonary embolism using different IDR.
Material And Methods: 1065 patients were included in the study. Patients in group A (n = 493) received an iodine concentration of 40 g/100 ml (IDR 1.6 g/s) and patients in group B (n = 572) an iodine concentration of 35 g/100 ml (IDR 1.4 g/s) at a flow rate of 4 ml/s. A 80-detector spiral CT scanner with iterative reconstruction was used. We measured mean density values in truncus pulmonalis, both pulmonary arteries and segmental pulmonary arteries. Subjectively, the contrast of apical and basal pulmonary arteries was determined on a 4-point Likert scale.
Results: Radiodensity was significantly higher in all measured pulmonary arteries using the increased IDR (p < 0.001). TP: 483.0 HU vs. 393.4 HU; APD: 452.1 HU vs. 372.1 HU; APS: 448.2 HU vs. 374.4 HU; ASP: 443.9 vs. 374.4 HU. Subjectively assessed contrast enhancement in apical (p = 0.077) and basal (p = 0.429) lung sections showed no significant differences.
Conclusion: Higher IDR improves objective image quality in all patients with significantly higher radiodensities by iterative reconstruction. Subjective contrast of apical and basal lung sections did not differ. The number of non-sufficient scans decreased with high IDR.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3233/CH-219115 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Surgical techniques and prognostic nomogram for patients with supravalvular aortic stenosis.
Eur J Med Res
January 2025
Department of Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
Background: An effective prognostic nomogram to predict the prognosis for supravalvular aortic stenosis (SVAS) patients is lacking.
Methods: A multi-center retrospective study of consecutive SVAS patients with surgery between 2002 and 2020 was conducted. Patients underwent McGoon repairs, Doty repairs, and other repairs.
Right ventricular remodeling in complex congenital heart disease.
Can J Cardiol
January 2025
Research Center, Montreal Heart Institute, Department of Medicine, Université de Montréal, Montreal, Canada; Adult Congenital Heart Centre, Montreal Heart Institute, Université de Montréal, Montreal, Canada. Electronic address:
In congenital heart diseases (CHD) of moderate to great complexity involving the right ventricle (RV), the morphologic RV can be exposed to significant stressors across the lifespan either in a biventricular circulation in a sub-pulmonary or sub-aortic position, or as part of a univentricular circulation. These include pressure and/or volume overload, hypoxia, ischemia, and periprocedural surgical stress leading to remodeling, maladaptation, dilation hypertrophy and dysfunction. This review examines the macroscopic remodeling of the RV in various forms of CHD and explores remodeling trajectories, along with the effects of surgeries and residual lesion repair, in tetralogy of Fallot, Ebstein anomaly, congenitally corrected transposition of the great arteries, transposition of the great arteries with atrial switch surgery, and single ventricle palliated by Fontan.
View Article and Find Full Text PDF5-Methylcytosine-modified circRNA-CCNL2 regulates vascular remdeling in hypoxic pulmonary hypertension through binding to FXR2.
Int J Biol Macromol
January 2025
Central Laboratory of Harbin Medical University (Daqing), Daqing 163319, PR China; College of Pharmacy, Harbin Medical University, Harbin 150081, PR China; Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, Harbin Medical University, Harbin 150081, PR China. Electronic address:
Pulmonary hypertension (PH) is a malignant cardiovascular disease with a complex etiology. 5-Methylcytosine (m5C) is a post-transcriptional RNA modification identified in both stable and highly abundant RNAs, with a lower frequency of occurrence in circular RNAs (circRNAs). Nevertheless, the function of m5C-modified circRNAs in the pathogenesis of PH remains uncertain.
View Article and Find Full Text PDFEfficacy and safety of single-branched stent graft in the treatment of type B aortic dissection: a meta-analysis of cohort studies.
J Cardiothorac Surg
January 2025
Department of Vascular Surgery, Zhangzhou Affiliated Hospital of FuJian Medical University, Zhangzhou, Fujian Province, 363000, China.
Background: Thoracic aortic endovascular repair (TEVAR) is the most commonly employed method for treating type B aortic dissection (TBAD). One of the primary challenges in TEVAR is the reconstruction of the left subclavian artery (LSA). Various revascularization strategies have been utilized, including branch stent techniques, fenestration techniques, chimney techniques, and hybrid techniques.
View Article and Find Full Text PDFDifferential substrate specificity of ERK, JNK, and p38 MAP kinases toward Connexin 43.
J Biol Chem
January 2025
Department of Biological Sciences, Moravian University, 1200 Main Street, Bethlehem, PA 18018, USA. Electronic address:
Phosphorylation of connexin 43 (Cx43) is an important regulatory mechanism of gap junction (GJ) function. Cx43 is modified by several kinases on over 15 sites within its ∼140 amino acid-long C-terminus (CT). Phosphorylation of Cx43CT on S255, S262, S279, and S282 by ERK has been widely documented in several cell lines, by many investigators.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!