BackgroundOur purpose was to evaluate the effectiveness of different kilovolt (kV) uses in computed tomography pulmonary angiography (CTPA) in the diagnosis of pulmonary thromboembolism (PTE). We also aimed to establish the optimal kV value and investigate the possibility of obtaining appropriate imaging quality with minimal radiation dose.Material/MethodsWe compared 120, 100, and 80 kV CTPA for 90 patients in whom PTE was clinically considered. The examinations were carried out using a 128 multislice CT device (Definition AS, Siemens Medical Solutions, Forchheim, Germany). Each kV value was used on 30 patients in 3 groups. Patients in all groups were compared with respect to the mean radiation dose they received, pulmonary arterial attenuation values, image quality, and motion artefacts.ResultsWith respect to pulmonary arterial attenuation values, imaging with 80 kV yielded significantly higher values (p<0.05). However, no difference was found between 120 kV, 100 kV, and 80 kV with respect to image quality. Similarly, no significant difference was detected between the groups with respect to pulmonary artery contrasting and motion artefacts. Statistically significant differences were present in DLP values and effective dose among all 3 groups (p<0.001).ConclusionsUsing 80 kV as the low value in CTPA imaging for patients pre-diagnosed with PTE will increase the density of pulmonary arteries and decrease the amount of radiation received.
ÖzetGiriş: Yüksek çözünürlüklü (YÇ) Bilgisayarlı Tomografi (BT) invitro damar ve stentlerin kenarlarında netlik artışına neden olduğu bilinen BT teknolojisinde bir gelişme olarak sunuldu. Amacımız, inme hastalarında karotis damarların çapı ve duvar kalınlığını değerlendirerek bu teknolojinin etkinliğini araştır-maktır. Gereç ve Yöntem: BT Anjiyografi (BTA) karotis arter; 19 YÇBT ile 21 standart çözünürlüklü (SÇ) BT toplam 40 inme hastası aynı görüntüleme protokolleri ile farklı üniversite hastanelerinde tetkik edildi. Damar duvarı iç -dış çapları ve ortak, iç,dış karotid arterlerin (CCA, ICA ve ECA) duvar kalınlığı iki radyolog tarafından ölçüldü ve görüntüler kalitesi, hareket artefaktı ve gürül-tüsü açısından karşılaştırıldı. Bulgular: YÇ ve SÇ BT anjiyografi karşılaştırıla-bilir bulunmuştur. YÇBT ölçümlerinde radyologların uyumu ve Cronbach Alpha değeri daha yüksek olup damar konturlarının görüntülerde keskin ve ölçümle-rin daha güvenilir olduğu gösterilmiştir. Tartışma: Teknolojik gelişmeler sonucu görüntü kalitesi YÇBT aniyografide iyileştirilmiştir. Bu yüzden işlem önce-si karotis ostiumundaki plakları , damar duvarının kenarlarını göstermede ve stenoz ölçümünde SÇBT den daha etkili olduğu düşünülmüştür. Anahtar KelimelerYüksek Çözünürlük; Bilgisayarlı Tomografi; Carotid Damarlar; Anjiografi; Gö-rüntü Kalitesi Abstract Aim: High definition(HD) Computed Tomography(CT) was presented as an improvement in CT technology which is known to have increased in sharpness of the edges of the vessels and stents in vitro. The purpose of the study was to take the effectivity of this technology clinically by evaluating the diameter and wall thickness of carotid vessels in stroke patients. Material and Method: CT Angiography(CTA) of carotid arteries; 19 with HDCT and 21 with standard definition(SD) CT, totally 40 stroke patients were examined in different University hospitals with the same imaging protocols. The vessel wall inner and outer diameters and thickness of common, internal and external carotid arteries (CCA, ICA and ECA) were assessed by two blinded radiologists. Comparison was made between the scanners for image quality, motion artefacts and image noise. Results: HD and SD CT angiography achieved comparable. The agreement of the radiologists and Cronbach Alpha value was higher in HDCT showing that vessel contours are sharper in HDCT images and measurements are more reliable. Discussion: Due to new gemstone technology image quality was improved in HDCT angiography, is found much more effective than SDCT to show the edges of the vessel wall so qualifies the establishment of the plaques and extent of osteal stenosis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.