CAMRT Practice Test Questions and Answers 2025-2026, Exams of Radiology

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CAMRT Practice Test Questions and Answers 2025- 2026

caudad degrees What does ERCP stand for and what is it done for? - CO, NSWER Endoscopic Retrograde Cholangiopancreatography; used to diagnose biliary and pane: tic 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? - C\ AP moulily of the cervical spine, or lack of movement duc Lo trauma or disease In SC35, what is the limil. for light field and x-ray field alignment? - Must not exceed 2% of the SID ORRECT Why do we do a ball catcher's v Jv-Assist in detecting early radiologic changes needed to diagnose rheumatoid arthritis What is Orthostatic Hypotension? - CORRECT ANSWER-Low blood pressure duc to standing upright (dizziness after get up from a supine position) What is the difference between Germicide and Disinfectant? - CORRECT 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?- CORRECT ANSWER-Scaphoid What is the difference between Lauenstein and cross-table lateral views of the hip? - CORRECT 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?- C Allows ¢ displacement or noticeable swelling that could suggest a disguised fracture ralo moasuremenl for any type of vertcbral When imaging the intercondylar fossa, which body part is perpendicular to the central ray?- CORRECT ANSWER The long axis of the lower leg 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 ss dogrce of correction Lhal can be obtained What is the optimal kV for a chest x-ray and why? - CORRECT ANSWER-110-125 kV sufficiently penetrates the heart shadow and visualizes the thoracic vertebrae as well as provides the long scale of contrast necessary Lo visualize lung details When doing a portable chest x-ray, how do you adjust the central ray for a kyphotic patient? - C ‘R-Angle less (closer to perpendicular) slightly or leave the tube perpendicular so clavicles will be 1" below apices of lung What is a PICC line? What is its position and purpose? - CORRECT ANSWER- Peripherally Inserted Central Catheter; placed in brachiocephalic vein at the junction of the SVC or actually within the SVC it: well as allowing nutrients and [nid to be instilled elf; used for measuring central venous pressure as What is the position and purpose of a Swan-Ganz catheter? - CORRECT ANSWER. Placed in right or left pulmonary artery; used to measure wed: pressure, systolic, diastolic, and mean pressure, to withdraw blood samples, and to inject drugs or administer flnids What aro the three layers of mater surrounding the brain? - CORR. WER-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? - CORRECT ANSWER-Acute subdural hematoma will have a ent-shaped peripheral high-de ion; 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 tho pathology demonstrated in the CT head image? - Glioma (Glioblastoma) What is the pixel value for a detector of 18? - ¢ NSWER2°18 = 262144, (The pixel valuc formula is 2°x, where x is Lhe number given) Why should scoliosis images be performed PA? - CORRECT ANS radiation exposure to selected radiosensitive organs WER-To reduce Why is an ERCP exam contraindicated if the patient has a pancreatic pseudocyst? - CORRECT ANSWER-A pseudocy: on of fluid and necrotic debris. The biliary and digestive systems can become t is a dilated spa sembling a cyst, with a colle compressed with some cysts, thus using a scope Lo enter Lhe ducts could cause a hemorrhage or rupture of the cyst if the scope were to accidently hit or penetrate the cyst. On that note, the injection of xray contrast is contraindicated and would NOT be used as the [mid will collect and as well could rupture the cyst. What is demonstrated on a 15-degree occipitolrontal view of the sinuses? - CORRECT ANSWER-Frontal sinuses lying superior to the frontonasal suture, anterior ethmoidal air cells lying on each side of the nasal fossas and immediately inferior to the frontal sphenoid sinuses proje through the nasal fossas just inferior to or in bety the cthmoid air cells, and petrous ridges lying in the lower third of the orbils What is the difference between Spondylolysis and Spondy lolisthesis? - CORRECT ANSWER-Spondylolys. =/he breaking down of a vertebra, or replacement of a portion of the vertebral arch with cartilage; refers to a defect in the pars interarticularis without displacement; Spondylolisthesis=forward displacement of a vertebra over a lower segment, usually of the 4 th or 5 th lumbar, frequently due to spondylolysis ‘R-Oblique fracture of the base of the sibly with proximal and latcral snblixation of mclacarpal shaft that What is a Bennett's Fracture? - first meLacarpal, pe extends into first carpometacarpal joint; usually caused by FOOSH What is a Pott's Fracture? - malleoli: First degree Pott’s=fractures involving one malleolus, Second degree Pott’s ‘Fracture of the ankle, involving the (bimalleolar)=[ractures involving both malleol, Third degree Pott’s (trimalleolar)}=bimalleolar fracture with a fracture of the posteroinferior surface of the tibia What is a Compound Fracture? - CORRECT ANSWER-A wound in communication with the fracture; susceptible to infe may be significant What is included on a CT head? - CORRECT ANS vertex WER-From base of skull to cranial Which vessel ascends through the cervical transverse foramina? - CORRECT ANSWER- Vertebral artery What three vessels provide oxygenated blood to the heart? - CORRECT ANSWER-The left and right Coronary Arteries and the Circumflex Artery What are the two types of target interactions that can produce diagnostic-range x-ray photons? - CORRECT ANSWER-Bremsstrahlung and Characteristic What should be superimposed on an ideal AP Odontoid that clearly demonstrates the tip 2. Lumbar Spine (80-S0 KVP, {Lateral 40+mAs}) 3. KUB (80-90KVP, avcrage 20-40mAs) A, Chest (125 KVP, average 5-10mAs) A patient has a known history of angina and is experiencing symptoms similar to a heart attack. What medication will likely be given to reduce the symptoms and treat this \NSWERNitroglycerine patient? - C A trauma patient has a CT scan for their head and an augmented Chest, Abdomen, Pelvis. Why is the head done first? - CORRECT ANSWER Because a brain bleed or other pathologies can be identified prior Lo being introduced since the contrast appcars white and similar to that of a fresh brain bleed: the contrast study of the Chest, Abdomen, would leave contrast stuck in the Blood Brain Barrier for up to 10 hours before it clears out What is the letter I in the picture? - CORRECT ANSWER-Common Bile Duct the bed raised 40-60 degrees What are the carpal bones in the proximal row in order from medial to lateral? - CORRECT ANSWERPisiform, Triquetrum, Lunate, Scaphoid If the SID is 40", the SOD is 38”, and the OID is 2". What is the magnification factor? - CORRECT ANSWERM=SID/SOD =40/38 =1.05 How does Automatic Gain Control change the exposure factors during a fluoroscopic What kV is used in mammography and why?- CORRECT ANSWER-23-28 kV; creates a delin high radiographic contrast that helps radiolog y the normal and diseased structures of the breast tissue. (ow kV= increased patient dose but also increased contrast; high kV= less dose, low contrast) What breathing should be used when x-raying a soft-tissue neck and why? - C( ANSWER-Slow inspiration so the image is obtained when the trachea is filled with air On an oblique lumbar spine what is the “neck” of the Scotty Dog? - CORRECT ANSWERPars interarticularis meters What is the minimum length of a mobile x-ray cable? long What is the CR angulation for the following clavicle views: AP, PA, AP Axial, and PA PA PROJECTION: perpendicular AP AXIAL PROJECTION: 15-30 degrees cephalad PA AXIAL PROJECTION: 15-30 degrees caudad During a voiding cystogram, your patient does not want to continue with the exam. Do you advocate for the radiologist or the pat. patient What is the centering for an abdominal aortography exam? - CORRECT ANSWER- Porpendicular Lo the midline of the body at the level of L2 What is the injection site for a cerebral angiogram? - CORRECT ANSWER-May be performed by using the direct percutaneous method of the common carotid artery or calhctorizalion method via a [omoral or transaxillary puncture; by gniding the catheter and appropriale positioning of the patient's head, any one of the cerebral vessels may be catheterized WER Maintain the brightness of an image during a fluoroscopic exam by automatically adjusting the What is the function of Automatic Brightness Control? - C exposure factors as necessary What does a recumbent right lateral stomach view demonstrate? - CORRE\ Right retrogastric space, duodenal loop, and duodenojeiunal june Aficr changing the collimator light bulb, what tcst would you perform? - CORRECT You are performing an ankle mortise. The distal tibiofibular joint appears to be open. What corrcelion, if any, is required? - CORRECT ANSWER-When the distal tibiofibular Joint is open, it usually means the leg is rotated 45 degrees and the mortise joint would not be open. To correct for this, externally rotate the patients’ leg so that the obliquity is 15-20 degrees The cervical spine on supine patient is being examined. The patient is in the RPO position with the CR 15-20 (SWER-An oblique ertebral foramina and pedicles degrees cephalad. What is best demonstrated? projection of the cervical vertebrae; left inter ANSWER-180em or 72 inches What areas of the body are most prone to bedsores? - CORRECT ANSWER-They can vhere the are tha occur anywhere on the body, but the areas most prone to bedsort bones are closer to the surface of the skin, such as the hips, elbows, ankles, back, shoulder and back of the head What joint and anatomical structure must be included on a tangential patellar view? - C of femoral condyles If the Image Intensifier is as close to the patient as possible, does the image have any magnification from OID? - CORRECT ANSWERNo, the II captures the projected x-rays and acts sitilar lo a IR in digital What are the two acronyms to remember for judet views and what do they stand for? - CORRECT ANSWER-ACE: nal rota’ on (demonstrates ilioischial column) \NSWER-Patellofemoral joint and patella in profile, as well as the surface Anterior rim of the acetabulum, Closed obturator foramen, POI: Posterior rim of the acetabulum, Open obturator foramen, Internal rotation (demonstrates iliopubic column) ***P for POT and pubic*** What are the CT numbers for air, lung. fat, water. blood, and bone? - CORRECT ANSWER-Air= -1000 Lung= -200 Fat=-100 Water= 0 Blood= 20 Bone= 1000 Why must the soft tissue be included on a lateral elbow image? - CORRECT ANSWER. The fat pads are least compressed when elbow is flexed 90 degr and if fat pad(s) are demonstrated on this image il indicatcs joint effusion, which means there may be an undetectable fracture Whal angle and direction is the central ray for an AP projection of the knee on a hypersthenic patient? - CO. iN; ‘R-3 degrees cephalad What is a nosocomial infection? Give some examples. - CORRECT ANSWER-An infection acquired in the course of medical care, such as MRSA, VRE, and C. Difficile What is an aneurysm? - blood vessel (usually an art commonly in the aorta but can also develop in the brain and other areas CA localized dilation (sac) in the walls ofa What is the evaluation criteria for the 30-degree frontooccipital projection of the skull? - CORRECT ANS forame magnum on both sides, indicating no rotation; Symmetric petrous pyramids: Dorsum sellae and posterior clinoid processes visib hin foramen magnum; Ponctration of occipital bone without excessive density al lateral borders of skull processes of L3 in persons of sthenic build What does the acronym TIPS stand for and what is its purpose? - CORRECT ANSWER Transiugular Intrahepatic Portosystemic Shunt; its purpose is to decrease portal hypertension and the associated variceal bleeding by allowing the portal venous cireulalion lo bypass ils normal course through the liver. What is the recommended overall repeat rate, according to the PAPP textbook? - CORRECT ANSWER4-6% How much attenuation MUST be provided in thyroid shields? - 0.5 mm lead equivalent How much atlonuation MUST be provided in protective aprons for cases using 150 kV? - CORRECT. AN: When is the Coyle method performed? - CORRECT ANSWER Coyle method, aka axiolateral elbow is usually performed in trauma cases when they patient’s elbow is flexed close to 90 degrees and they are unable to extend for medial and lateral obliques What is ankylosing spondylitis? - CORRECT ANSWER Ossification in the paravertebral tissues and longitudinal spinal ligaments combines with extensive lateral bony bridge: sen vertebral bodies to produce the characteristic “bamboo spine” of advanced dis raclures in later slages duc to osteoporosis of verlcbral bodies and patient's restricted movement What is the final location for a feeding tube VS an NG tube? Feeding tube goes into at least the first part of the duodenum and tl only goes into the slomach What is the angle and direction of the CR for BE sigmoid shot if the palicnt is prone? - CORRECT ANS What is the central ray for an axiolateral view of the mandible when the patient is ina dorsal decubitus position? - CORRECT ANSWER-Horizontal central ray that angled 23 degrees cephalad What is situs inversus?- CORRECT ANSWER-Total or partial transposition of the body organs Lo the side opposi he normal Tf all other factors remain the sate, how is patient dose effected when you increase tube current? - C ‘ER Increased dose (direct relationship) Tf all other factors remain the same, how is patient dose effected when you increase SID? - CORRECT Ay Tf all other factors remain the same, how is palicnt dose cffected when you inercase ficld size? - CORRECT ANSWER Increased dose (direct relationship) the 10 minute image must be repeated as soon as possible centered the appropriate amount higher to include the entire kidney True or False: When performing a lateral image for an Os Calcis, it is important that the talar domes are superimposed upon one another and an open tibiotalar joint is visualized. CORRECT ANSWER-Truc You are performing an AP Transcapular “Y" image. It appears that the medial border of the scapula is superimposed on the thorax and not on the lateral border of the scapula. paliont obliquity What is the palpable anatomical landmark at the level of T4/5? Sternal angle What is the palpable anatomical landmark at the level of T9/10? - CORRECT ANSWER- Xiphoid process What is the palpable anatomical landmark at the level of C7/T1? - CORRECT ANSWER- Vertebral prominens What type of fracture is his?- CORRECT AN: WER-15-20 ‘k-Radiographic technique that employs motion to show anatomical structures lying in a plane of tissue while blurring or eliminating the detail in images of structures above and below the plane of interest. In CT, what do window width and window level change? - CORR! ANSWER- Window width: contrast Window level: the center of the window, or range of grey shades that will be displayed Which projection demonstrates the maximum amount of breast tissue? ACC B. MLO C.ML D. LM - ORRECT ANSWER-MLO Which way is the patient rotated if their right obturator foramen is open on an AP pelvis ‘ER-RPO position While performing a fronlooccipital image of the skull you notice thal the dorsum sella is above the foramen magnum. What are two changes that could be made to bring it into the foramen magnum? - Have the patient tuck their chin down toward their chest more and/or in udal angle of the tnbe Why is it important to know a patient's creatinine level before injection of contrast? - CORRECT ANSWER-To check kidney contraindic: tion of contrast is function because inj impaired kidney function. What are the three cardinal rules of radiation protection? - CORRECT ANSWER- Increase distance. Decrease time. Use shielding. 2