Advanced image-based virtual monoenergetic dual-energy CT angiography of the abdomen: optimization of kiloelectron volt settings to improve image contrast

European Radiology
M H AlbrechtJ L Wichmann

Abstract

To compare quantitative image quality parameters in abdominal dual-energy computed tomography angiography (DE-CTA) using an advanced image-based (Mono+) reconstruction algorithm for virtual monoenergetic imaging and standard DE-CTA. Fifty-five patients (36 men; mean age, 64.2 ± 12.7 years) who underwent abdominal DE-CTA were retrospectively included. Mono + images were reconstructed at 40, 50, 60, 70, 80, 90 and 100 keV levels and as standard linearly blended M_0.6 images (60 % 100 kV, 40 % 140 kV). The contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR) of the common hepatic (CHA), splenic (SA), superior mesenteric (SMA) and left renal arteries (LRA) were objectively measured. Mono+ DE-CTA series showed a statistically superior CNR for 40, 50, 60, 70 and 80 keV (P < 0.031) compared to M_0.6 images for all investigated arteries except SMA at 80 keV (P = 0.08). CNR at 40 keV revealed a mean relative increase of 287.7 % compared to linearly blended images among all assessed arteries (P < 0.001). SNR of Mono+ images was consistently significantly higher at 40, 50, 60 and 70 keV compared to M_0.6 for CHA and SA (P < 0.009). Compared to linearly blended images, Mono+ reconstructions at low keV levels of abdominal DE-CTA da...Continue Reading

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Citations

Mar 25, 2016·Abdominal Radiology·Ravi K Kaza, Joel F Platt
Jan 11, 2017·Abdominal Radiology·Eric P TammPriya R Bhosale
Mar 13, 2018·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Masaki KatsuraOsamu Abe
Sep 25, 2017·The British Journal of Radiology·Elizabeth GeorgeAaron D Sodickson
Nov 14, 2017·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Kevin KaliszPrabhakar Rajiah
Sep 11, 2019·Radiology·Moritz H AlbrechtU Joseph Schoepf
Aug 21, 2019·Abdominal Radiology·Anushri Parakh, Temel Tirkes
May 23, 2020·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Seitaro OdaYasuyuki Yamashita
Mar 16, 2018·Insights Into Imaging·D J MurphyM L Steigner
Apr 10, 2019·Emergency Radiology·Ellen X SunAaron D Sodickson
Mar 29, 2019·The British Journal of Radiology·Tommaso D'AngeloJulian L Wichmann
Apr 25, 2017·Current Radiology Reports·Elise D RoeleA A Postma
Jan 24, 2019·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Taek Min KimBernhard Krauss
Jul 1, 2019·Journal of X-ray Science and Technology·Ming ChenHengyong Yu
Jun 18, 2020·European Radiology Experimental·M van AssenR Vliegenthart

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