NMTCB EXAM PREP ACTUAL QUESTIONS AND ANSWERS 2024/2025 GUARANTEED SUCCESS 100%

NMTCB EXAM PREP ACTUAL QUESTIONS AND ANSWERS 2024/2025 GUARANTEED SUCCESS 100% Common Reactor produced radionuclides? - Answer ️️ -Mo-99/Tc-99m , I-131, I-125, Xe-133, Sr-89, Sm-153, P-32, Cr-51 Common Accelerator produced radionuclides? - Answer ️️ -I-123, Th-201, Ga-67, In-111, All positron emitters Bremsstrahlung? - Answer ️️ -*radiation that results from deceleration of the beta particles as they approach the nuclei Film Badge Imp. Points - Answer ️️ -*made of 3to4 filters (Pb, Cu, Al, plastic) *should be worn between waist and shoulder *processed monthly *adversely affected by heat and moisture *the amount of darkening on the film is proportional to amount of radiation absorbed *effective measuring 10 mrem to several hundred rem TLD Badge Imp. Points - Answer ️️ -*thermoluminescent dosimeter *uses LiF crystal that emits a quantity of light proportional to the amount of radiation absorbed by crystal *this light is released during high hearing called annealing *can distinguish beta from photon/neutron radiation *can only be analyzed once *are used ring badges (forefinger) OSLD Badge Imp. Points - Answer ️️ -*optically stimulated luminescent dosimeter *uses thin slice of aluminum oxide to detect radiation *resistant to heat, moisture and aging *can be used to monitor more than once, up to 3 months *can be analyzed multiple times Caution: Radiation Area (sign) - Answer ️️ -*where individual can receive more than 5 mrem (0.05 mSv) in 1 hour at 30 cm *seen in entrances to nuc med labs Caution: Radioactive Materials (sign) - Answer ️️ -*where radioactive materials are used or stored *usually in entrances of work areas and NM labs *indicates potential presence of radiation sources and/or contamination Caution: High Radiation Area (sign) - Answer ️️ -*individual can receive more than 100 mrem (1 mSv) in 1 hour at 30 cm from radiation source *commonly where radiation therapy is performed A wipe on an external package surface cannot exceed? - Answer ️️ -*7,200 dpm for a wiped area of 300 cm^2 for gamma and beta emitters Decay in Storage Imp. Points - Answer ️️ -*radioactive materials with a half life of less than 120 days can be stored in a shielded storage area until they are bkg Equation for dpm - Answer ️️ -dpm = net cpm / efficiency * NRC requires wipe testing must be recorded in dpm *"efficiency" means efficiency of the well counter Mo-99/Tc-99m Generator - Answer ️️ -*column containing alumina onto which the parent Mo- 99 is adsorbed *Tc99m is collected as the eluate in the form of Tc99m-NaO4 Specific Activity - Answer ️️ -*the amount of radioactivity per unit of mass of RN or RP *expressed in (mCi/mg), MBq/mg), (Ci/mol), (GBq/mol) Mo-99 Imp. points - Answer ️️ -*considered a radionuclidic impurity *when administered to patients, its taken up by the parenchymal cells of liver and delivers unnecessary dose of radiation *0.15 uCi / per 1 mCi Tc99m at time of administration to patient Spatial Resolution - Answer ️️ -*Ability of a scintillation camera to separate small object in space *performed weekly SPECT COR - Answer ️️ -*performed weekly (or monthly) *evaluation is used to correct for slight variation in the position of the camera head as it rotates *performed with each type of collimator Spatial Linearity - Answer ️️ -*Ability of a scintillation camera to produce a uniform image with straight lines corresponding to straight lines in a phantom *Clinically, it is the accurate portrayal of true organ