International Journal of Radiation Research
نشریه پرتو پژوه
Int J Radiat Res
Basic Sciences
http://ijrr.com
79
journal79
2322-3243
2345-4229
10.61186/ijrr
en
jalali
1400
4
1
gregorian
2021
7
1
19
3
online
1
fulltext
en
Thorax artifacts in CT – air embolism or other causes?
Radiobiology
Radiobiology
تحقيق بديع
Original Research
<div style="text-align: justify;">Background: The existence of air in hollow organs in the thoracic cavity constitutes a life-threatening situation most of the times. However, sometimes in thoracic Computed Tomography (CT) there are artifacts from different sources that could mimic air densities, disorientating the diagnosis. Materials and Methods: 100 patients (46 females and 54 males, mean age: 60 years, range: 20-90 years), who had been routinely scanned in the area of thorax using three different imaging protocols (follow up, aorta, pulmonary vessels) were retrospectively studied. In 67 cases, contrast agent was used during the examination. Every case was studied by two specialists. Results: Artifacts in pulmonary veins were observed in 38 of the cases. Of these artifacts 27 stemmed from contrast agent, calcifications in the vessels, metallic implants, movement of the patient, malfunction of a detector due to the size of field of view (FOV) or due to the existence of contrast agent on the examination table of the CT scanner. In 11 cases, small amounts of air had been inserted into blood circulation during contrast injection. Conclusions: This study characterized and classified many artifacts related to thorax CT in order to separate them from other serious thoracic pathologies (e.g. aortic dissection, ulcer of veins or arteries). The knowledge and identification of the different types of artifacts is very important in order to avoid the risk of misdiagnosis.</div>
Streak artifacts, CT, air embolism, Air bubble, contrast agent.
653
659
http://ijrr.com/browse.php?a_code=A-10-2188-40&slc_lang=en&sid=1
E.
Lavdas
7900319475328460020280
7900319475328460020280
No
University of West Attica, Department of Biomedical Sciences, Athens, Greece
M.
Papaioannou
7900319475328460020281
7900319475328460020281
No
Animus Kyanoys Stavros, Department of Radiology, Larissa, Greece
A.
Tsikrika
7900319475328460020282
7900319475328460020282
No
General University Hospital of Larissa, Department of Radiology, Greece
E.
Pappas
7900319475328460020283
7900319475328460020283
No
Animus Kyanoys Stavros, Department of Radiology, Larissa, Greece
G.K.
Sakkas
7900319475328460020284
7900319475328460020284
No
General University Hospital of Larissa, Department of Radiology, Greece
V.
Roka
7900319475328460020285
7900319475328460020285
No
Health Center of Farkadona, Trikala, Greece
S.
Kostopoulos
7900319475328460020286
7900319475328460020286
No
University of West Attica, Medical Image and Signal Processing Laboratory, Department of Biomedical Engineering, Athens, Greece
P.
Mavroidis
panayiotis_mavroidis@med.unc.edu
7900319475328460020287
7900319475328460020287
Yes
Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC, USA