Skip to main content
Key Specialties
Cardiology Diabetology Endocrinology Gastroenterology Geriatrics and Gerontology Gynecology and Obstetrics Hematology Infectious Disease Internal Medicine Nephrology Neurology Oncology Pediatrics Respiratory Medicine Rheumatology Surgery
Congress Coverage
2024 ACC Congress 2023 ESMO Congress 2023 EASD Congress 2023 ERS Congress 2023 ESC Congress
Clinical Collections
Advances in Alzheimer’s

Keynote webinar | Spotlight on medication adherence

LIVE: Thursday 27th June 2024, 18:00-19:30 (CEST)
Join our expert panel to discover why you need to understand the drivers of non-adherence in your patients, and how you can optimize medication adherence in your clinics to drastically improve patient outcomes.
ADVANCED SEARCH
Log in
Top
European Radiology
Published in: European Radiology 5/2014

01-05-2014 | Computed Tomography

Assessment of vascular contrast and wall motion of the aortic root and ascending aorta on MDCT angiography: dual-source high-pitch vs non-gated single-source acquisition schemes

Authors: Jared D. Christensen, Danielle M. Seaman, Matthew P. Lungren, Lynne M. Hurwitz, Daniel T. Boll

Published in: European Radiology | Issue 5/2014

Login to get access

Abstract

Objectives

This retrospective study assessed whether dual-source high-pitch computed tomographic angiography (CTA) offered advantages over single-source standard-pitch techniques in the evaluation of the ascending aorta.

Methods

Twenty patients who received both thoracic dual-source high-pitch and single-source standard-pitch CTAs within 1 year were assessed. Dual-source CTAs were performed; standard-pitch imaging used dose-modulated 120 kVp/150 mAs and 0.8 pitch compared with high-pitch protocols employing dose-modulated 120 kVp/250 mAs and 2.4 target pitch. Radiation dose was documented. Contrast-to-noise ratios (CNRs) at sinuses of the Valsalva (CNRValsalva) and ascending aorta (CNRAorta) were calculated. Dose/CNR for each technique was compared with paired t-tests. Motion at aortic valve, aortic root and ascending aorta were assessed with four-point scales and Mann–Whitney U tests; longitudinal extension of motion was compared with paired t-tests.

Results

Significantly lower motion scores for high-pitch, compared with standard-pitch acquisitions for aortic annulus, 0 vs. 2, aortic root, 0 vs. 3, and ascending aorta, 0 vs. 2, were achieved. Significantly reduced longitudinal extension of motion at aortic root, 4.9 mm vs 15.7 mm, and ascending aorta, 4.9 mm vs 21.6 mm, was observed. Contrast was not impacted: CNRValsalva, 45.6 vs 46.3, and CNRAorta, 45.3 vs 47.1. CTDIvol was significantly decreased for high-pitch acquisitions, 13.9 mGy vs 15.8 mGy.

Conclusions

Dual-source high-pitch CTAs significantly decreased motion artefact without negatively impacting vascular contrast and radiation dose.

Key Points

• Dual-source high-pitch CTA significantly decreased motion artefact of the ascending aorta.
• Dual-source high-pitch CTA did not negatively impact on vascular contrast.
• Dual-source high-pitch CTA significantly decreased radiation dose compared with single-source standard-pitch acquisitions.
Literature
1.
2.
Hayter RG, Rhea JT, Small A, Tafazoli FS, Novelline RA (2006) Suspected aortic dissection and other aortic disorders: multi-detector row CT in 373 cases in the emergency setting. Radiology 238:841–852PubMedCrossRef
3.
Sommer T, Fehske W, Holzknecht N et al (1996) Aortic dissection: a comparative study of diagnosis with spiral CT, multiplanar transesophageal echocardiography, and MR imaging. Radiology 199:347–352PubMed
4.
Tacelli N, Remy-Jardin M, Flohr T et al (2010) Dual-source chest CT angiography with high temporal resolution and high pitch modes: evaluation of image quality in 140 patients. Eur Radiol 20:1188–1196PubMedCrossRef
5.
Ko SF, Hsieh MJ, Chen MC et al (2005) Effects of heart rate on motion artifacts of the aorta on non-ECG-assisted 0.5-sec thoracic MDCT. AJR Am J Roentgenol 184:1225–1230PubMedCrossRef
6.
Roos JE, Willmann JK, Weishaupt D, Lachat M, Marincek B, Hilfiker PR (2002) Thoracic aorta: motion artifact reduction with retrospective and prospective electrocardiography-assisted multi-detector row CT. Radiology 222:271–277PubMedCrossRef
7.
8.
Christensen JD, Meyer LT, Hurwitz LM, Boll DT (2011) Effects of iopamidol-370 versus iodixanol-320 on coronary contrast, branch depiction, and heart rate variability in dual-source coronary MDCT angiography. AJR Am J Roentgenol 197:W445–W451PubMedCrossRef
9.
Schoepf UJ, Becker CR, Ohnesorge BM, Yucel EK (2004) CT of coronary artery disease. Radiology 232:18–37PubMedCrossRef
10.
Hausleiter J, Meyer T, Hermann F et al (2009) Estimated radiation dose associated with cardiac CT angiography. JAMA 301:500–507PubMedCrossRef
11.
Earls JP, Berman EL, Urban BA et al (2008) Prospectively gated transverse coronary CT angiography versus retrospectively gated helical technique: improved image quality and reduced radiation dose. Radiology 246:742–753PubMedCrossRef
12.
13.
Hausleiter J, Meyer TS, Martuscelli E et al (2012) Image quality and radiation exposure with prospectively ECG-triggered axial scanning for coronary CT angiography: the multicenter, multivendor, randomized PROTECTION-III study. JACC Cardiovasc Imaging 5:484–493PubMedCrossRef
14.
Flohr TG, Leng S, Yu L et al (2009) Dual-source spiral CT with pitch up to 3.2 and 75 ms temporal resolution: image reconstruction and assessment of image quality. Med Phys 36:5641–5653PubMedCrossRef
15.
Silverman PM, Kalender WA, Hazle JD (2001) Common terminology for single and multislice helical CT. AJR Am J Roentgenol 176:1135–1136PubMedCrossRef
16.
Bischoff B, Meinel FG, Reiser M, Becker HC (2013) Novel single-source high-pitch protocol for CT angiography of the aorta: comparison to high-pitch dual-source protocol in the context of TAVI planning. Int J Cardiovasc Imaging 29:1159–1165PubMedCrossRef
17.
Petersilka M, Bruder H, Krauss B, Stierstorfer K, Flohr TG (2008) Technical principles of dual source CT. Eur J Radiol 68:362–368PubMedCrossRef
18.
Achenbach S, Marwan M, Schepis T et al (2009) High-pitch spiral acquisition: a new scan mode for coronary CT angiography. J Cardiovasc Comput Tomogr 3:117–121PubMedCrossRef
19.
Sommer WH, Albrecht E, Bamberg F et al (2010) Feasibility and radiation dose of high-pitch acquisition protocols in patients undergoing dual-source cardiac CT. AJR Am J Roentgenol 195:1306–1312PubMedCrossRef
20.
Goetti R, Baumuller S, Feuchtner G et al (2010) High-pitch dual-source CT angiography of the thoracic and abdominal aorta: is simultaneous coronary artery assessment possible? AJR Am J Roentgenol 194:938–944PubMedCrossRef
21.
Achenbach S, Manolopoulos M, Schuhback A et al (2012) Influence of heart rate and phase of the cardiac cycle on the occurrence of motion artifact in dual-source CT angiography of the coronary arteries. J Cardiovasc Comput Tomogr 6:91–98PubMedCrossRef
22.
Bolen MA, Popovic ZB, Tandon N, Flamm SD, Schoenhagen P, Halliburton SS (2012) Image quality, contrast enhancement, and radiation dose of ECG-triggered high-pitch CT versus non-ECG-triggered standard-pitch CT of the thoracoabdominal aorta. AJR Am J Roentgenol 198:931–938PubMedCrossRef
23.
Blanke P, Bulla S, Baumann T et al (2010) Thoracic aorta: prospective electrocardiographically triggered CT angiography with dual-source CT—feasibility, image quality, and dose reduction. Radiology 255:207–217PubMedCrossRef
Metadata
Title
Assessment of vascular contrast and wall motion of the aortic root and ascending aorta on MDCT angiography: dual-source high-pitch vs non-gated single-source acquisition schemes
Authors
Jared D. Christensen
Danielle M. Seaman
Matthew P. Lungren
Lynne M. Hurwitz
Daniel T. Boll
Publication date
01-05-2014
Publisher
Springer Berlin Heidelberg
Published in
European Radiology / Issue 5/2014
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-014-3120-2

Other articles of this Issue 5/2014

European Radiology 5/2014 Go to the issue

Head and Neck

Ultrahigh field magnetic resonance and colour Doppler real-time fusion imaging of the orbit – a hybrid tool for assessment of choroidal melanoma

Hepatobiliary-Pancreas

Assessing liver function by liver enhancement during the hepatobiliary phase with Gd-EOB-DTPA-enhanced MRI at 3 Tesla

Computed Tomography

Emergency CT head and neck imaging: effects of swimmer’s position on dose and image quality

Gastrointestinal

Sensitivity and specificity of CT colonography for the detection of colonic neoplasia after positive faecal occult blood testing: systematic review and meta-analysis

Head and Neck

Magnetic resonance imaging with diffusion-weighted imaging in the evaluation of thyroid-associated orbitopathy: getting below the tip of the iceberg

Breast

Is there any correlation between model-based perfusion parameters and model-free parameters of time-signal intensity curve on dynamic contrast enhanced MRI in breast cancer patients?