Exam (elaborations)
ARRT X-Ray Registry QUESTION AND ANSWERS 2024
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ARRT X-Ray Registry QUESTION AND ANSWERS 2024
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ARRT X-Ray Registry QUESTION ANDANSWERS 2024
1 byte = - ANS-8 bits
1 HVL = - ANS-4 cm; if inc by 4 cm, double mAs
4 skull sutures - ANS-coronal, sagittal, squamosal, lambdoidal
acoustic neuroma - ANS-benign tumor on IAC (CN8), arises from schwann cells
active area (semiconductor) - ANS-photoconductor & photodiode; captures image
actual focal spot - ANS-Where the electrons hit the target
airborne PPE - ANS-gloves, gown, respirator, isolate patient - TB, varicella
analog data - ANS-A continuous representation of data; sampling and quantization
anode - ANS-face made of 90% tungsten 10% rhenium; back of anode is molybdenum
bc lightweight & graphite bc heatsink
anode heel effect - ANS-Uneven distribution of radiation intensity in the x-ray beam;
higher intensity on cathode side (fat=cat); noticeable with large IR and short SID
ap axial cspine - ANS-CR at C4; 15-20 cephalic bc lordotic curve
ap axial foot - ANS-10 cephalic; CR at third MTP
ap axial toes - ANS-CR 15 degrees posteriorly, centered at the 3rd MTP joint
IR 8x10 crosswise with two images
Collimation- one inch on all sides
AP Fuchs - ANS-raise chin and align with mastoid; CR just below chin; to see odontoid
AP grashey - ANS-oblique 45 degrees, scapula parallel to IR, CR 2 inches medial, 2
inches inferior from superolateral border
, AP hip centering - ANS-1.5 inches perpendicular to the midline between ASIS and pubic
symphysis (at level of greater trochanter
AP scapula - ANS-CR 2 inches below coracoid, arm 90 degrees flexing
AP towne - ANS-IOML perp when 37 caudal, OML perp when 30 caudal, CR 2.5 above
glabella through foramen magnum; able to see dorsum sella in fm
AP Tspine - ANS-CR 4 inches below jugular notch;
attenuated - ANS-doesn't reach the IR (scatter and absorbed)
axial coccyx - ANS-10 caudal when supine, CR 2 inch above PS
axial sacrum - ANS-15 cephalic when supine, CR 2 inches above pubic symphysis
axillary temperature - ANS-97.6
backup timer - ANS-CFR 600 mas
barium fluorohalide - ANS-absorbs xrays before converted to electrons
basal fracture - ANS-fx at base of skull, concerned with basilar artery
battle sign - ANS-posterior head trauma, bruise around temporal/occipital area
bit depth - ANS-number of grey shades available per pixel (grayscale)
2^n
brems peak - ANS-avg energy of photons in a beam
brems photon energy (keV) determined by - ANS-kvp & angle of deflection - can be 1
kvp up to set kvp
Bremsstrahlung radiation - ANS-"Braking radiation." The sudden deceleration of
electrons as they interact with highly positively charged nuclei. always occurs!
C7 - ANS-vertebra prominens—prominent spinous process
CF 3 phase-12 - ANS-1.41
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