CAMRT Test Exam Questions With 100% Verified Answers

CAMRT Test Exam Questions With 100% Verified Answers Cardiogenic shock - ANSWER- with pulm emb, myocardial infarction: Heart not pumping enough blood to organs SS: chest pain, dizziness, change in consciousness, cool clammy, decr Bp, Irregular pulse What to do: place in semi fowlers, prepare for CPR Distributive shock - ANSWER- Pooling of blood in peripheral vessels, decreased Bp 3 types: neurogenic, septic, anaphylactic Neurogenic shock - ANSWER- diabetic shock- lack of glucose adverse affect to anethesia SS: low Bp, bradycardia, warm dry skin, cool extrem, keep pt supine Septic shock - ANSWER- SS: incre HR and breathing, nausea, seizure keep warm Anaphylactic shock - ANSWER- mild: congestion, swelling eyes, tight throat mod: warm flush+ itch, dyspnea severe: vomitting, decr Bp, cramping Pulm embolism: Obstructive shock - ANSWER- occlusion of pulm art by thrombus SS: rapid weak pulse- tacycardia, dyspnea, diaphoresis (sweating), syncope, low bp Diabetic emergencies - ANSWER- Hypoglycemia: excess insulin from not eating Ketoacidosis: insuff insulin causes liver to produce more glucose= hyperglycemic - excess urination, sweet breath SS: tacycardia,extreme thirst Pt faints what to do - ANSWER- help to floor and elevate legs Line focus principle - ANSWER- effective FS smaller then actual Small anode angle - ANSWER- large heel affect 15% incr kV is equivalent to - ANSWER- doubling mAs but no dose increase HVL is best method for measuring - ANSWER- xray quality coherent scatter happens with energies - ANSWER- lower then 10 keV do no contribute to the image Compton scatter - ANSWER- dominant at high energy (120kV) outer shell reduces xray energy, changes direction reduces contrast photoelectric absorption - ANSWER- inner shell xray absorbed proportional to z contributes alot to pt dose mammo - ANSWER- 50-70cm SID 25-32kV FS: 0.1-0.3 mm smaller for mag 40 years + for screening FS blur - ANSWER- less on anode side more on cathode Big pt attenuates - ANSWER- more xrays most important influence on subject contrast - ANSWER- kVP low kV: high SC, short grayscale high kV - ANSWER- high scatter Grid ratio - ANSWER- height/D(width) high grid ratios are more effective in reducing scatter Parallel grid - ANSWER- more common for cutoff with short SID Focused (moving grid) - ANSWER- prevent grid lines minimize cutoff off focus (wrong SID) - ANSWER- cutoff towards edge off center - ANSWER- grid cut off across image/ underexposed Pleural effusion tech increase - ANSWER- incr mAs by 35% Apical chest - ANSWER- 15-20 ceph or stand 30 cm away how many ribs are seen above the diaphragm with neonates - ANSWER- 8 Yearly QC - ANSWER- film screen contact rad output reproducibility (5%) Linearity filtration -HVL AEC light field alignment EI range grid performance collimator alignment If pt cannot fully ulnar deviate for scaphoid view - ANSWER- increase angle for a lat forarm - ANSWER- scaphoid dist to pisiform Int/ ext obl elbow - ANSWER- ext: capitulum and radial jnt open int: coronoid and trochlea process open axiolat coyle (radial head view) - ANSWER- shows radial head and coronoid when cannot obl normally 45 towards shoulder seperates capitulum and trochlea moves rad head ant 45 caudad for coronoid and trochlea under angle: elbow higher then shoulder capitulum SI trochlea over: elbow too low radial tuberosity SI ulna AP foot angle - ANSWER- low arch: 10 deg high: 15 deg OBl foot obliquity - ANSWER- low arch: obl foot 30 ave: 45 high: 60 Cesium Silicon vs selenium - ANSWER- Cesium Silicon: indirect DR process- xrays converted to light first Cesium Selenium: direct DR process-xrays converted to electrical signal IVU purpose - ANSWER- Intravenous urography (IVU)- for function and anatomy Retrograde urography purpose - ANSWER- for anatomy strictures/stones : pts with contrast allergy, contrast intro into ureters modified lith position **not for function OBL kidneys - ANSWER- kidney closer to IR- perp, kidney farther- parallel