Camrt Exam All Complete Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+

CAMRT EXAM ALL COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+ What is the central ray for an AP axial coccyx? - ANSWER- Angle 10 degrees caudad What does ERCP stand for and what is it done for? - ANSWER- Endoscopic Retrograde Cholangiopancreatography; used to diagnose biliary and pancreatic pathologies when the biliary ducts are not dilated and no obstruction exists in the ampulla What do Flexion/Extension views of the Cervical Spine assess? - ANSWER- AP motility of the cervical spine, or lack of movement due to trauma or disease In SC35, what is the limit for light field and x-ray field alignment? - ANSWER- Must not exceed 2% of the SID Why do we do a ball catcher's view? - ANSWER- Assist in detecting early radiologic changes needed to diagnose rheumatoid arthritis What is Orthostatic Hypotension? - ANSWER- Low blood pressure due to standing upright (dizziness after getting up from a supine position) What is the difference between Germicide and Disinfectant? - ANSWER- Germicide is a solution that destroys microorganisms; Disinfectant is a type of germicide that inhibits the growth of bacteria Which carpal bone is most commonly fractured? - ANSWER- Scaphoid What is the difference between Lauenstein and cross-table lateral views of the hip? - ANSWER- Lauenstein=lesser trochanter in profile medially and femoral neck superimposes greater trochanter Cross-table Lateral=femoral neck demonstrated without overlap from greater trochanter and a small amount of the lesser trochanter on the posterior surface of the femur demonstrated in profile Why do we include anterior soft tissue on a trauma cross-table lateral of the c-spine? - ANSWER- Allows accurate measurement for any type of vertebral displacement or noticeable swelling that could suggest a disguised fracture When imaging the intercondylar fossa, which body part is perpendicular to the central ray? - ANSWER- The long axis of the lower leg What is the purpose of lateral bending for scoliosis imaging? - ANSWER- Employed in patients with early scoliosis to determine the presence of structural change when bending to the right and left (compensatory curve will correct itself on one of these images), as well predict or assess degree of correction that can be obtained What is the optimal kV for a chest x-ray and why? - ANSWER- 110-125 kV sufficiently penetrates the heart shadow and visualizes the thoracic vertebrae as well as provides the long scale of contrast necessary to visualize lung details When doing a portable chest x-ray, how do you adjust the central ray for a kyphotic patient? - ANSWER- Angle less (closer to perpendicular) slightly or leave the tube perpendicular so clavicles will be 1" below apices of lung Why is a CT study for PE scanned from from abdomen to just above shoulders? - ANSWER- To help reduce artifact of the contrast when the initial injection is given because of the large amount of contrast that will be entering the superior vena cava before the coronary arteries What type of medication may be administered to a patient prior to a contrast study to prevent a reaction? - ANSWER- Steroids and antihistamines (Benadryl, Medrol) What is Spatial Resolution? - ANSWER- The ability of an imaging process to distinguish small, adjacent, high-contrast structures in the object What should you do if a nurse forgets to chart a medication during an Intravenous pyelogram (IVP)? - ANSWER- Bring any omissions to their attention - any item that has not been documented on the chart is considered to be "not performed" in a court of law What does penumbra effect? - ANSWER- Recorded detail What is the Line Focus Principle? - ANSWER- Through angling the target, the effective area of the target is made much smaller than the actual area of electron interaction (smaller anode angle=smaller effective focal spot, larger anode angle=larger effective focal spot) How do you know if an oblique image of the L-spine is over-rotated? - ANSWER- The pedicles sit too far posterior on vertebral bodies (Remember: ***PP, too much***=posterior pedicles) What is a PICC line? What is its position and purpose? - ANSWER- Peripherally Inserted Central Catheter; placed in brachiocephalic vein at the junction of the SVC or actually within the SVC itself; used for measuring central venous pressure as well as allowing nutrients and fluid to be instilled What is the position and purpose of a Swan-Ganz catheter? - ANSWER- Placed in right or left pulmonary artery; used to measure wedge pressure, central venous pressure, systolic, diastolic, and mean pressure, to withdraw blood samples, and to inject drugs or administer fluids What are the three layers of mater surrounding the brain? - ANSWER- From outer to inner: Dura, Arachnoid, and Pia What is the appearance of a subdural hematoma on a CT (acute and chronic) and the likely cause of one? - ANSWER- Acute subdural hematoma will have a crescent-shaped peripheral high-density lesion; Chronic Subdural hematoma appears as an isodense lesion; They usually result from trauma, and is venous bleeding from ruptured veins between the dura and meninges What is the pathology demonstrated in the CT head image? - ANSWER- Glioma (Glioblastoma)