Detection of pancreatic tumors, image quality, and radiation dose during the pancreatic parenchymal phase: effect of a low-tube-voltage, high-tube-current CT technique--preliminary results

Radiology
Daniele MarinEhsan Samei

Abstract

To intraindividually compare a low-tube-voltage (80 kVp), high-tube-current (675 mA) computed tomographic (CT) technique with a high-tube-voltage (140 kVp) CT protocol for the detection of pancreatic tumors, image quality, and radiation dose during the pancreatic parenchymal phase. This prospective, single-center, HIPAA-compliant study was approved by the institutional review board, and written informed consent was obtained. Twenty-seven patients (nine men, 18 women; mean age, 64 years) with 23 solitary pancreatic tumors underwent dual-energy CT. Two imaging protocols were used: 140 kVp and 385 mA (protocol A) and 80 kVp and 675 mA (protocol B). For both protocols, the following variables were compared during the pancreatic parenchymal phase: contrast enhancement for the aorta, the pancreas, and the portal vein; pancreas-to-tumor contrast-to-noise ratio (CNR); noise; and effective dose. Two blinded, independent readers qualitatively scored the two data sets for tumor detection and image quality. Random-effect analysis of variance tests were used to compare differences between the two protocols. Compared with protocol A, protocol B yielded significantly higher contrast enhancement for the aorta (508.6 HU vs 221.5 HU, respectivel...Continue Reading

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Citations

Jul 12, 2011·Current Opinion in Gastroenterology·Cyrus Piraka, James M Scheiman
Jun 28, 2011·AJR. American Journal of Roentgenology·Daniele MarinSebastian T Schindera
Oct 25, 2011·AJR. American Journal of Roentgenology·Atul B ShinagareStuart G Silverman
Nov 1, 2012·AJR. American Journal of Roentgenology·Tobias HeyeDaniel T Boll
Jun 26, 2013·AJR. American Journal of Roentgenology·David M HoughJoel G Fletcher
Dec 29, 2013·AJR. American Journal of Roentgenology·Masayuki KanematsuKyongtae T Bae
Jan 10, 2014·European Radiology·David SimonsHeinz-Peter Schlemmer
Jan 23, 2014·European Journal of Radiology·Giulia A ZamboniRoberto Pozzi Mucelli
Jul 25, 2014·Radiology·Se Hyung KimJürgen K Willmann
May 14, 2014·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Mukta D AgrawalDushyant V Sahani
Apr 26, 2014·Radiology·Daniele MarinRendon C Nelson
Oct 15, 2013·Academic Radiology·Jorge M Fuentes-OrregoDushyant V Sahani
Jul 24, 2012·Academic Radiology·Giorgio AscentiMichele Gaeta
May 9, 2012·Radiologic Clinics of North America·Mustafa R Bashir, Rajan T Gupta
Dec 15, 2015·Radiologic Clinics of North America·Melissa PriceDushyant Sahani
Mar 20, 2016·Diagnostic and Interventional Imaging·T LestraC Hoeffel
Mar 26, 2016·Surgical Oncology Clinics of North America·Eric P TammEric M Rohren
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Oct 17, 2016·Seminars in Roentgenology·Sooah Kim, William P Shuman

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