Less of a concern for fringe fields is posed by:
a)Mid-field superconducting imagers
b)Low field resistive imagers
c)High field superconductive imagers that are shielded
d)Low field permanent magnet imagers
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d)Low field permanent magnet imagers
In the United States, the FDA limits the allowable amount of RF absorption to:
a)0.4W/kg
b)4 W/kg
c)2 W/kg
d)There is no FDA limit
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, a)0.4W/kg
Contraindications for using gadolinium include:
a)Sickle cell crisis and hypertension
b)Anorexia and pregnancy
c)High BUN and low creatinine
d)Hemalytic anomalies and lactating mothers
e)None known
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e)None known
When used for MRI, cables from RF coils and ECG leads should be:
a)Braided and placed straight through the imager
b)Layed along the patient's right arm, along the bore
c)Formed into loops within the imager
d)Neatly coiled and ready for use
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a)Braided and placed straight through the imager
Gradient magnetic fields are a safety concern because they:
a)Produce large amounts of RF energy
b)Induce currents in conductors
c)Cause short-term memory loss
d)All of the above
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b)Induce currents in conductors
FDA guidelines limit the field strength of clinical imagers to:
a)Up to 1.5 T
b)Up to 2 T
c)Up to 4 T
d)Up to 6 T
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b)Up to 2 T
The field strength at isocenter is measured in units of:
a)Gauss
b)Tesla
c)Watts
d)SAR
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b)Tesla
A method that is more accurate in the detection of small intra-ocular ferrous foreign
bodies is:
a)Computerized tomography
b)MRI
a)Mid-field superconducting imagers
b)Low field resistive imagers
c)High field superconductive imagers that are shielded
d)Low field permanent magnet imagers
Give this one a try later!
d)Low field permanent magnet imagers
In the United States, the FDA limits the allowable amount of RF absorption to:
a)0.4W/kg
b)4 W/kg
c)2 W/kg
d)There is no FDA limit
Give this one a try later!
, a)0.4W/kg
Contraindications for using gadolinium include:
a)Sickle cell crisis and hypertension
b)Anorexia and pregnancy
c)High BUN and low creatinine
d)Hemalytic anomalies and lactating mothers
e)None known
Give this one a try later!
e)None known
When used for MRI, cables from RF coils and ECG leads should be:
a)Braided and placed straight through the imager
b)Layed along the patient's right arm, along the bore
c)Formed into loops within the imager
d)Neatly coiled and ready for use
Give this one a try later!
a)Braided and placed straight through the imager
Gradient magnetic fields are a safety concern because they:
a)Produce large amounts of RF energy
b)Induce currents in conductors
c)Cause short-term memory loss
d)All of the above
, Give this one a try later!
b)Induce currents in conductors
FDA guidelines limit the field strength of clinical imagers to:
a)Up to 1.5 T
b)Up to 2 T
c)Up to 4 T
d)Up to 6 T
Give this one a try later!
b)Up to 2 T
The field strength at isocenter is measured in units of:
a)Gauss
b)Tesla
c)Watts
d)SAR
Give this one a try later!
b)Tesla
A method that is more accurate in the detection of small intra-ocular ferrous foreign
bodies is:
a)Computerized tomography
b)MRI
