CTTG QUIZ MARCH 2011

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CTTG QUIZ MARCH 2011:

CTTG QUIZ MARCH 2011 Compiled by Christine Vanderley-Reichner

-50 QUESTIONS -30 SECONDS EACH -Answers available during break -winner and prizes at the end of the day -WRITE YOUR NAME ON THE ANSWER SHEET write the answers in capitals!!!!!:

- 50 QUESTIONS - 30 SECONDS EACH -Answers available during break -winner and prizes at the end of the day - WRITE YOUR NAME ON THE ANSWER SHEET write the answers in capitals!!!!!

Q 1 . Effective Radiation Dose in CT scanning is measured in ?:

Q 1 . Effective Radiation Dose in CT scanning is measured in ? Curie Sieverts Becquerel Gray Roentgens

Q2. The mechanism that radiation damages cells is ?:

Q2. The mechanism that radiation damages cells is ? Destruction of the nucleus causing cell death An increase in heat to the fluid causing death Ionisation of the atoms in the cells causing the nucleus to destruct Destruction of the DNA Expansion of the cell causing it to explode

Q 3 . Which of these organs is deemed by latest research to be the most radiation sensitive ?:

Q 3 . Which of these organs is deemed by latest research to be the most radiation sensitive ? Eyes Thyroid Testes Breast Ovaries

Q4 . The abbreviation DLP stands for?:

Q4 . The abbreviation DLP stands for? Dose line productivity Dimension time product Dose linear problem Dose length product Density length product

Q5 . To limit or reduce radiation dose during CT scanning, what methods should you use ?:

Q5 . To limit or reduce radiation dose during CT scanning, what methods should you use ? Limit the range reduce the kV when possible Increase scanning pitch Use dose modulation Reduce reference mA levels Monitor DLP’s over time for changes All of the above

Q 6 . NATA have suggested some DLP’s for various regions. What is their suggestion for CT scans of the head ?:

Q 6 . NATA have suggested some DLP’s for various regions. What is their suggestion for CT scans of the head ? A. 60 1 00 5 00 1000 2000

Q7. To covert a DLP to effective dose when scanning a chest, the conversion factor is ?:

Q7. To covert a DLP to effective dose when scanning a chest, the conversion factor is ? 0.0023 0.017 0.0008 0.014 0.23

Q8 . Beam hardening artefact is caused by ?:

Q8 . Beam hardening artefact is caused by ? Primary beam attenuation from dense objects Insufficient sampling data Patient motion during acquisition Low temporal resolution

Q 9. An increase in Z speed greater than slice rotation distance will produce?:

Q 9. An increase in Z speed greater than s lice rotation distance will produce? D ecrease in contrast resolution Slice beam broadening R eduction in aliasing artefact Reduction in temporal resolution

Q 10 . Stair step artefact is caused by ?:

Q 10 . Stair step artefact is caused by ? Slice thickness to thick to resolve changes in shape Patient motion during acquisition I nsufficient Object sampling Beam Hardening

Q 11 . RANZCR lave listed certain disease as risk factors for the injection of iodinated IVCM. Which if these isn’t ?:

Q 11 . RANZCR lave listed certain disease as risk factors for the injection of iodinated IVCM. Which if these isn’t ? Gout Vascular Disease Cancer Asthma Diabetes

Q 12. The heat that is experienced by patients during a contrast injection is mainly caused by what ?:

Q 12. The heat that is experienced by patients during a contrast injection is mainly caused by what ? Hyper-Osmolar effect Dehydration High Blood pressure Poor renal function

Q13 . Common usage Non Ionic contrast media has an osmolarity of ? ( remember blood is 190):

Q13 . Common usage Non Ionic contrast media has an osmolarity of ? ( remember blood is 190) < 200 200-300 400-600 700-1000 2000

Q 14.What dose and strength IVCM is recommended by RANZCR for children for a CT head?:

Q 14.What dose and strength IVCM is recommended by RANZCR for children for a CT head? 1ml p er kg of BW of 350 2mls per kilo of BW of 300 0.5mls per kilo of BW of 300 1 mls per kilo of BW of 300

Q 15 . Which of these patients is at risk of CIN after the injection of IVCM ?:

Q 15 . Which of these patients is at risk of CIN after the injection of IVCM ? Diabetic with an eGFR of 30 Normal renal function with no known risk factors Allergy to seafood eGFR 60, dehydrated, over 80yrs of age Creatinine 55, liver failure 15 years old, Creatinine 45

Q 16 . What precautions should you take when injecting IVCM through a peripheral in dwelling catheter ?:

Q 16 . What precautions should you take when injecting IVCM through a peripheral in dwelling catheter ? Do not use for power pump injections without unless you know it is safe Reduce the rate, volume and timing Check its patency with Normal Saline and then inject None

Q 17 . What technique could you use to improve the image quality when scanning a large patient ( 185kg) for a pulmonary angiogram ?:

Q 17 . What technique could you use to improve the image quality when scanning a large patient ( 185kg) for a pulmonary angiogram ? Decrease the kV increase the slice thickness Increase the IVCM injection rate and volume increase the pitch

Q 18 . The upper pole of the Right kidney is seen at which spinal level --inspiration ?:

Q 18 . The upper pole of the Right kidney is seen at which spinal level --inspiration ? T9 T10-11 T12 L1

Q19 . Which intervertebral disc space is closest to the level of the iliac crest and the umbilicus ?:

Q19 . Which intervertebral disc space is closest to the level of the iliac crest and the umbilicus ? L2/3 L3/4 L4/5 L5/S1

Q 20 .In an Adrenal mass Characterisation series , which of these series would appropriate?:

Q 20 .In an Adrenal mass Characterisation series , which of these series would appropriate? C-, Arterial, 70 sec C-, 2 minute Post IVCM Post contrast 70 second C-, 70 sec, 15 minute delay

Q 21. An obstruction at the level of the Foramen of Munro would result n what changes to the ventricles?:

Q 21. An obstruction at the level of the Foramen of Munro would result n what changes to the ventricles? Large lateral ventricles Large 4 th , 3 rd , laterals large 3 rd and 4th Large 3 rd but normal 4 th and laterals Large 4 th ventricles

Q22 .The arrow points to an abnormal ? :

Q22 .The arrow points to an abnormal ? Aorta parathyroid Oesophagus thymus

Q23 .Which artery is indicated with the arrow ?:

Q23 .Which artery is indicated with the arrow ? Carotid V ertebral Basilar J ugular

Q24 .The recess ( arrowed ) is ?:

Q24 .The recess ( arrowed ) is ? V ertebral foramen Groove for Sagittal sinus G roove for transverse sinus Jugular foramen

Q25 . There are 3 Ossicles. Which of these articulates with the tympanic membrane ?:

Q25 . There are 3 Ossicles. Which of these articulates with the tympanic membrane ? malleus incus stapes

Q26 The average dimension of a renal artery is?:

Q26 The average dimension of a renal artery is? 1mm 2mm 3mml 4mm 5mm

Q27 .The CBD drains into which part of the bowel:

Q27 .The CBD drains into which part of the bowel Stomach 1 st part duodenum 2 nd part duodenum 3 rd part duodenum

Q28. The irregular structure indicated by the arrow is ?:

Q28. The irregular structure indicated by the arrow is ? Diaphragm L iver Pleura Stomach O esophagus

Q29 . Can you suggest what the IVCM delay was for this scan ?:

Q29 . Can you suggest what the IVCM delay was for this scan ? 30secs 40secs 60secs 100secs

Q30 . The dense white mass seen in this scan is probably a ?:

Q30 . The dense white mass seen in this scan is probably a ? renal calculus gall stone calcified plaque appendicolith

Q31 . Graves disease of the orbit is caused by ?:

Q31 . Graves disease of the orbit is caused by ? Addison's disease Hyperthyroidism H ypothyroidism Hyperaldosteroidism

Q 32. What region of the body would you scan for a Pancoast Tumour ?:

Q 32. What region of the body would you scan for a Pancoast Tumour ? Head Chest Abdomen Pelvis

Q33 . A Wilms tumour is most commonly found where and in which age group ?:

Q33 . A Wilms tumour is most commonly found where and in which age group ? Paediatric kidney Adult kidney Paediatric Liver Adult Liver A dult chest

Q34 . If you have dysphagia, You are unable to ? :

Q34 . If you have dysphagia, You are unable to ? smell Speak Swallow Know where your limbs are

Q35 . If you have diplopia, You have ? :

Q35 . If you have diplopia, You have ? D ouble vision Two thumbs Two ureters on each kidney Bilateral adrenal masses

Q36 . An exogenous aneurysm is caused by ?:

Q36 . An exogenous aneurysm is caused by ? Trauma Infection S ystemic disease Hereditary disease A mass outside the aorta causing compression

Q 37. The white lines in this lung scan are caused by ?:

Q 37. The white lines in this lung scan are caused by ? Atelectasis Emphysema Pulmonary Fibrous Poor respiratory effort Trauma

Q 38 . The defect seen in this talus are most likely caused by ?:

Q 38 . The defect seen in this talus are most likely caused by ? Osteomyelitis T umour D egenerative disease Fractures

Q 39 .This CT scan is consistent with ?:

Q 39 .This CT scan is consistent with ? SDH EDH SAH IVH ICH

Q 40 . The appearance of this bowel is consistent with ?:

Q 40 . The appearance of this bowel is consistent with ? Small bowel obstruction Colitis causing oedema Ischaemic gut Oral contrast from a previous study

Q41 .This pelvic mass is typical for a ?:

Q41 .This pelvic mass is typical for a ? Fibroid Teratoma Hydatid Cyst Cystic-adeno carcinoma

Q 42 . This aneurysm of the leg is is which leg artery ?:

Q 42 . This aneurysm of the leg is is which leg artery ? Popliteal Profunda Femoral Dorsalis Pedis

Q 43 . In this cerebral angiogram, which artery has the filling defect ?:

Q 43 . In this cerebral angiogram, which artery has the filling defect ? Anterior Cerebral Anterior Communicating Middle Cerebral Basilar Posterior Cerebral

Q 44 . This area of infarction will affect what function ?:

Q 44 . This area of infarction will affect what function ? Sight Speech Balance Smell

Q45.This splenic lesion is most likely a ?:

Q45.This splenic lesion is most likely a ? Infarct Hydatid cyst Haemangioma Abscess

Q46 . The thickened skull is consistent with ?:

Q46 . The thickened skull is consistent with ? Hyperostosis frontalis internus Fibrous displasia Paget's Osteomyelitis

Q47 .This patient had PUO, what is the likely CT appearance of ?:

Q47 .This patient had PUO, what is the likely CT appearance of ? Trauma Abscess Infarction With Luxury Perfusion

Q48 . This appearance is consistent with ?:

Q48 . This appearance is consistent with ? Multi Cystic Disease Lymphoma Pancreatitis Cystic Adeno- Carcinoma

Q 49 .This cavitation lesion with bilateral inflammatory lung changes is consistent with ?:

Q 49 .This cavitation lesion with bilateral inflammatory lung changes is consistent with ? Pulmonary TB empyema Emphysematous bullae bronchogenic cyst

Q50 . This appearance is consistent with ?:

Q50 . This appearance is consistent with ? Intra cerebral haemorrhage Sub Dural Haemorrhage Intra ventricular haemorrhage Extra Dural haemorrhage

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