scholarly journals Interference Issuses of Radio Frequency Identification Devices in Magnetic Resonance Imaging Systems and Computed Tomography Scan

2015 ◽  
Vol 20 (3) ◽  
pp. 295-301 ◽  
Author(s):  
M. Periyasamy ◽  
R. Dhanasekaran
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Radio Frequency Identification ◽  
Imaging Systems ◽  
Resonance Imaging ◽  
Computed Tomography Scan ◽  
Frequency Identification ◽  
Radio Frequency Identification Devices ◽  
Tomography Scan

scholarly journals Assessment of Safety and Interference Issues of Radio Frequency Identification Devices in 0.3 Tesla Magnetic Resonance Imaging and Computed Tomography

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
M. Periyasamy ◽  
R. Dhanasekaran
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Ct Scanning ◽  
Resonance Imaging ◽  
Rfid Tag ◽  
Frequency Identification ◽  
Radio Frequency Identification Devices

The objective of this study was to evaluate two issues regarding magnetic resonance imaging (MRI) including device functionality and image artifacts for the presence of radio frequency identification devices (RFID) in association with 0.3 Tesla at 12.7 MHz MRI and computed tomography (CT) scanning. Fifteen samples of RFID tags with two different sizes (wristband and ID card types) were tested. The tags were exposed to several MR-imaging conditions during MRI examination and X-rays of CT scan. Throughout the test, the tags were oriented in three different directions (axial, coronal, and sagittal) relative to MRI system in order to cover all possible situations with respect to the patient undergoing MRI and CT scanning, wearing a RFID tag on wrist. We observed that the tags did not sustain physical damage with their functionality remaining unaffected even after MRI and CT scanning, and there was no alternation in previously stored data as well. In addition, no evidence of either signal loss or artifact was seen in the acquired MR and CT images. Therefore, we can conclude that the use of this passive RFID tag is safe for a patient undergoing MRI at 0.3 T/12.7 MHz and CT Scanning.

Mucocele of the sphenoid sinus: a rare entity to keep in mind

2019 ◽  
Vol 8 (2) ◽  
pp. 1-5
Author(s):  
Marrakchi jihene ◽  
Mejbri Maha ◽  
Sana Mahfoudhi ◽  
Besbes Ghazi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Surgical Management ◽  
Sphenoid Sinus ◽  
Diagnosis And Treatment ◽  
Rare Entity ◽  
Resonance Imaging ◽  
Computed Tomography Scan ◽  
Tomography Scan

Isolated sphenoid sinus mucocele (SSM) is a rare entity that can result in serious sequelae if diagnosis and treatment are inappropriately delayed. Typically, mucoceles are asymptomatic, and they are accidentally identified after computed tomography scan or magnetic resonance imaging of the maxillofacial area performed for other pathologic issues. We report a case of isolated SSM that only presented with headache for over a year, and also review the literature regarding surgical management of such entity.

IMPLEMENTATION OF RADIO FREQUENCY IDENTIFICATION DEVICES IN 0.3 TESLA MAGNETIC RESONANCE IMAGING AND COMPUTED TOMOGRAPHY

2014 ◽  
Vol 26 (06) ◽  
pp. 1450069 ◽  
Author(s):  
M. Periyasamy ◽  
R. Dhanasekaran
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Ct Scanning ◽  
Reading Performance ◽  
Resonance Imaging ◽  
Rfid Tag ◽  
Frequency Identification

The aim of this work was to assess two issues concerning magnetic resonance imaging (MRI) including device functionality and image artifacts for the presence of ultra high frequency (UHF) radio frequency identification (RFID) devices in connection with 0.3 Tesla at 12.7 MHz MRI and computed tomography (CT) scanning. A total of 15 samples of RFID tags with two dissimilar sizes (wristband and ID card types) were tested. The tags were exposed to a several numbers of MR-imaging conditions during MRI examination and X-rays of CT scan. During the test, the tags were oriented in three different directions (axial, coronal and sagittal) pertaining to MRI system in order to encompass all possible situations with respect to the patient undergoing MRI and CT scanning, wearing a RFID tag on wrist. In addition to the device functionality test and imaging artifacts, we also analyzed the reading performance of the RFID reader considering significant factors in MRI scan area. We observed that the tags did not experience physical damage with its functionality remained unchanged even after MRI and CT scanning, and there was no modification in previously stored data as well. In addition, no evidence of artifact was observed in the acquired MR and CT images. Therefore, we can conclude that the use of passive UHF RFID tag is safe for a patient undergoing MRI at 0.3 T/12.7 MHz and CT scanning. However, the reading performance of the RFID reader got affected depending on whether the MRI machine was on or off and also by the angle of the reader antenna.

FETUS IN FETU — A CASE REPORT

2008 ◽  
Vol 11 (03) ◽  
pp. 145-149
Author(s):  
Qibin Ye ◽  
Xiaodong Pang ◽  
Jianhua Gao ◽  
Hong Wang ◽  
Lihong Ning
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Case Report ◽  
Magnetic Resonance ◽  
Long Bones ◽  
Resonance Imaging ◽  
Computed Tomography Scan ◽  
Fetus In Fetu ◽  
Ultrasound Computed Tomography ◽  
Tomography Scan

We report the case of a 12-year-old girl with an unusual "third upper extremity" developed in her back around the axis. Radiography, ultrasound, computed tomography scan, and magnetic resonance imaging revealed the development of a complex deformity comprised of long bones and fluid, largely resembling an upper limb; as well as a fluid-filled membrane sac whose contents favored a fetus in fetu.

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