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Dear MDCT.net users,
The early detection of cardiothoracic pathologies, in patients at risk, depends on the
availability of noninvasive diagnostic imaging modalities. CT angiography is widely used to screen
for, characterize and stage lesions of the heart, aorta and pulmonary vasculature. The diagnostic
accuracy of this examination depends on intensity of the enhancement provided by the contrast
medium, as explained in the new Focus on by Professor Paul published this month on MDCT.net.
One concern about the use of CT-based diagnostic methods is exposing patients to ionizing
radiation. How to reduce radiation exposure during chest CT was addressed in a lecture given by Dr.
Iezzi at this year’s meeting of the European Society of Thoracic Imaging, now available as an
e-lecture on MDCT.net. As he explained, low-dose scanning protocols require that additional efforts
be made to maintain image quality. Besides using new, more powerful image-processing algorithms,
another approach is to use contrast medium with a high iodine concentration, permitting high iodine
flux and, hence, strong arterial enhancement without needing to increase contrast medium volume or
injection rate.
The selection of recent research literature and the extract of the Atlas of CT Angiography
listed here provide additional information on cardiothoracic CT angiography. Finally, the four
clinical cases provide practical examples of the use of this advanced technique.
We remind you that suggestions for new topics to be covered in future issues are
appreciated: for this purpose please contact us at
editorial@mdct.net
.
From the MDCT.net team
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• Kim SM, Cho YK, Choe
YH.
Adenosine-stress dynamic myocardial perfusion imaging using 128-slice
dual-source CT in patients with normal body mass indices: effect of tube voltage, tube current, and
iodine concentration on image quality and radiation dose.
Int J Cardiovasc Imaging. 2014 Aug 26. [Epub ahead of print]
• Katsanos S, van
Rosendael P, Kamperidis V et al.
Pericardial effusion following transcatheter aortic valve implantation:
echocardiography and multi-detector row computed tomography evaluation.
Int J Cardiovasc Imaging. 2014 Aug 17. [Epub ahead of print]
• Wichmann JL, Hu X, Kerl
JM et al.
Non-linear blending of dual-energy CT data improves depiction of late iodine
enhancement in chronic myocardial infarction.
Int J Cardiovasc Imaging. 2014 Aug;30(6):1145-1150
• Di Cesare E, Gennarelli
A, Di Sibio A et al.
Assessment of dose exposure and image quality in coronary angiography
performed by 640-slice CT: a comparison between adaptive iterative and filtered back-projection
algorithm by propensity analysis.
Radiol Med. 2014 Aug;119(8):642-649
• Belgrano M, Bregant P,
Djoguela MF et al.
256-slice CT coronary angiography: in vivo dosimetry and technique
optimization.
Radiol Med. 2014 Apr;119(4):249-256
• Wiegerinck EM,
Marquering HA, Oldenburger NY et al.
Imaging for approach selection of TAVI: assessment of the aorto-iliac tract
diameter by computed tomography-angiography versus projection angiography.
Int J Cardiovasc Imaging. 2014 Feb;30(2):399-405
• Kilic K, Erbas G, Ucar
M et al.
Determination of lowest possible contrast volume in computed tomography
pulmonary angiography by using pulmonary transit time.
Jpn J Radiol. 2014 Feb;32(2):90-97
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From ESTI Symposium, Amsterdam, June 2014
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Worsening dyspnea and cardiac murmur
Man, 40 years old
view »
Fever and pain after thoracic surgery
Woman, 32 years old
view »
Follow-up on aortic graft
Man, 75 years old
view »
Cardiac murmur
Girl, 9 years old
view »
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