Indian Journal of Radiology and Imaging Indian Journal of Radiology and Imaging

TECHNICAL REPORT
Year
: 2016  |  Volume : 26  |  Issue : 1  |  Page : 153--155

A rare cause of tube arcing artifact seen in computed tomography image of a positron emission tomography/computed tomography scanner


Sneha Mithun, Ashish Kumar Jha, Ketan Panchal, Nilendu C Purandare, Sneha Shah, Archi Agrawal, Venkatesh Rangarajan 
 Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India

Correspondence Address:
Dr. Venkatesh Rangarajan
Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai - 400 012, Maharashtra
India

Tube arcing artifact is known to be caused by a temporary short circuit in the X-ray tube causing momentary loss of X-ray output. It is seen as near-parallel and an equidistant streak pattern on transaxial computed tomography (CT) images and as a «DQ»horizontal«DQ» hypodense band on the coronal and sagittal CT images. This artifact can be a random occurrence and was caused in this particular case due to voltage fluctuations in the high-voltage supply transformer supplying the rotor of the anode in the X-ray tube. This problem was initially corrected by reducing the tube voltage to 120 kV from the original 140 kV and, subsequently, replacing the faulty transformer. This kind of artifact, which is a very rare situation, can affect the image quality, and could also be an early sign of equipment failure. To the authors«SQ» knowledge, such an artifact has not been reported till date in a clinical scenario. Hence, we would like to report a rare situation of tube arcing artifact along with a unique remedy.


How to cite this article:
Mithun S, Jha AK, Panchal K, Purandare NC, Shah S, Agrawal A, Rangarajan V. A rare cause of tube arcing artifact seen in computed tomography image of a positron emission tomography/computed tomography scanner.Indian J Radiol Imaging 2016;26:153-155


How to cite this URL:
Mithun S, Jha AK, Panchal K, Purandare NC, Shah S, Agrawal A, Rangarajan V. A rare cause of tube arcing artifact seen in computed tomography image of a positron emission tomography/computed tomography scanner. Indian J Radiol Imaging [serial online] 2016 [cited 2020 May 26 ];26:153-155
Available from: http://www.ijri.org/article.asp?issn=0971-3026;year=2016;volume=26;issue=1;spage=153;epage=155;aulast=Mithun;type=0