Radt 1085 Study guides, Class notes & Summaries

RADT 1085 TESTS QUESTIONS WITH ALL CORRECT ANSWERS Which of the following mobile radiographic units does not need to be plugged into the wall while producing X-rays? - Answer-battery-powered mobile unit This dedicated unit is used to determine if a patient's bone mineral density or mass is normal or low - Answer-Bone Densitimetry A common site for mobile fluoroscopy is - Answer-operating room During linear tomography, the tube an image receptor - Answer-Move in opposite directions al...

RADT 1085 Final Exam Questions and Answers All Correct When operated in magnification mode, the electrostatic lenses have ________ voltage. - Answer-increased Digital fluoroscopy with a charge-coupled device has lower _____________ and higher ______________ than conventional fluoroscopy. - Answer-patient dose, light sensitivity The capability of an image intensifier to increase the illumination level of the image is called its _____________________. - Answer-brightness gain The abil...

RADT 1085 Unit 1 Test Questions and Answers All Correct When increased OID is unavoidable, SID should be - Answer-increased slightly to compensate. In Computed radiography - Resolving power determined by - Answer-PSP and scanning system frequency (sampling); the greater the frequency the greater the resolution In Direct radiography - Resolving power determined primarily by - Answer-the detector element size (DEL), but detector system can influence too - (Cesium Iodide/Amorphous Silico...

RADT 1085 Fluoroscopy Exam Questions and Answers All Correct What is vertical resolution? - Answer Number of scan lines that can fit onto screen The horizontal resolution is determined by ______ - Answer the bandpass What is bandpass? - Answer The number of times per sec electron beam can be modulated Bandpass is measured in what? - Answer Hz A higher bandpass = (increased/decreased) horizontal resolution? - Answer Increased Fluoroscopic monitors have a ______ MHz bandpas...

RADT 1085 Chapter 5 Exam Questions and Answers All Correct Where is the power of the x ray imaging system first delivered to? - Answer-the autotransformer What principle does the autotransformer work on? - Answer-electromagnetic induction The autotransformer has one ___________ and one _________ - Answer-winding core Which side is the kvp selector on? - Answer-the output side What are the 2 kVp controls? - Answer-kvp minor and kvp major Where does the output voltage go? - Answe...

RADT 1085 Final Test with Correct Answers What are materials called that are strongly attracted to a magnet? - Answer-Ferromagnetic What are materials called that are NOT attracted to a magnet? - Answer-Non-magnetic What are materials called that are weakly attracted to a magnet? - Answer-Paramagnetic How are the north poles of two magnets going to affect each other? - Answer-They will repel Materials that are easily magnetized and demagnetized are said to have a high _____. ...

RADT 1085 Final Test Questions and Answers All Correct What are functions of the filament? 1) primary thermal conductor 2) target surface for high voltage electrons from the filament 3) conducts high voltage from the cathode back to x-ray circuit generator. - Answer-all of these What are the 3 parts of the anode assembly? - Answer-anode, stator, and rotor Why is a vacuum created in the x-ray tube? - Answer-To remove the air to permit electrons to flow from cathode to anode wit...

RADT 1085 Test 1 Questions with Correct Answers How does an object become electrified? - Answer-Electrons are added to or subtracted from this object The five laws of electrostatics are: - Answer-1) Repulsion-attraction 2) Inverse square law 3) Distribution 4) Concentration 5) Movement Electrification can be caused by what three methods? - Answer-Friction, contact, induction Out of the 3 ways an object can become electrified, which is the most important? - Answer-Induction because...

RADT 1085 Final Exam Questions and Answers

RADT 1085 Unit 5 Test Questions and Answers All Correct Fluoroscopic Image Quality: Quantum Mottle - Answer-Blotchy, grainy appearance Caused by insufficient radiation Most common solution is to increase fluoro tube mA Advantages of FPIR over II-CCD: - Answer-• Less image distortion. • Constant image quality over entire image. • Improved contrast resolution. • Rectangular image area coupled to similar image monitor. CCD converts - Answer-light pattern to electrical sig...