Document Detail


High-pitch dual-source CT angiography of supra-aortic arteries: assessment of image quality and radiation dose.
MedLine Citation:
PMID:  23223824     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
INTRODUCTION: High-pitch CT angiography (CTA) is a recent innovation that allows significant shortening of scan time with volume coverage of 43 mm per second. The aim of our study was to assess this technique in CTA of the head and neck. METHODS: CTA of supra-aortic arteries was performed in 50 patients using two acquisition protocols: conventional single-source 64-slice (pitch 1.2) and high-pitch dual-source 128-slice CT (pitch 3.2). Subjective and objective image quality of supra-aortic vessel ostia as well as intra- and extra-cranial segments was retrospectively assessed by blinded readers and radiation dose compared between the two protocols. RESULTS: Conventional and high-pitch CTA achieved comparable signal-to-noise ratios in arterial (54.3 ± 16.5 versus 57.3 ± 14.8; p = 0.50) and venous segments (15.8 ± 6.7 versus 18.9 ± 8.9; p = 0.21). High-pitch scanning was, however, associated with sharper delineation of vessel contours and image quality significantly improved at the level of supra-aortic vessel ostia (p < 0.0001) as well as along the brachiocephalic trunk (p < 0.0001), the subclavian arteries (p < 0.0001), proximal common carotid arteries (p = 0.01), and vertebral V1 segments (p < 0.0001). Using the high-pitch mode, the dose-length product was reduced by about 35 % (218.2 ± 30 versus 141.8 ± 20 mGy × cm). CONCLUSIONS: Due to elimination of transmitted cardiac motion, high-pitch CTA of the neck improves image quality in the proximity of the aortic arch while significantly lowering radiation dose. The technique thus qualifies as a promising alternative to conventional spiral CTA and may be particularly useful for identification of ostial stenosis.
Authors:
A Korn; M Fenchel; B Bender; S Danz; C Thomas; D Ketelsen; C D Claussen; G Moonis; B Krauss; M Heuschmid; U Ernemann; H Brodoefel
Related Documents :
23359324 - Physiological impact of cto recanalization assessed by coronary pressure measurement-a ...
23645054 - Transcatheter closure of left coronary cameral fistula with amplatzer duct occluder ii.
25007764 - Local pulse wave velocity directly reflects increased arterial stiffness in a restricte...
24040474 - A novel surgical procedure: scaffold-pulmonary autograft transplantation.
9234134 - Endovascular techniques in adult aortic coarctation: the use of stents for native and r...
25323774 - Real time three-dimensional transesophageal echocardiographic evaluation of aortic valv...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-8
Journal Detail:
Title:  Neuroradiology     Volume:  -     ISSN:  1432-1920     ISO Abbreviation:  Neuroradiology     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1302751     Medline TA:  Neuroradiology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Diagnostic und Interventional Neuroradiology, Hoppe-Seyler-Strasse 3, 72076, Tuebingen, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Empirical relationships among oliguria, creatinine, mortality, and renal replacement therapy in the ...
Next Document:  The evaluation of FDG-PET imaging for epileptogenic focus localization in patients with MRI positive...