Veterinary Radiology

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MEMBERSHIP EXAMINATION

JUNE/JULY 2007

VETERINARY RADIOLOGY

PAPER 1

Perusal time: 15 minutes

Time allowed: TWO (2) Hours after perusal

Answer FOUR (4) from six (6) questions only.

All questions are of equal value.

Subsections of Questions are of equal value unless stated otherwise

PAPER 1 – VETERINARY RADIOLOGY 2007

Answer FOUR (4) from six (6) questions only.

1. X-ray photons are produced after the interaction of electrons at the anode.

Describe the design and materials used in a stationary anode. Describe the interactions which occur at the anode to produce x-ray photons. Discuss how each type of interaction influences the range of x-ray photon energies in the resultant beam of x-ray photons.

2. a) Discuss the photoelectric effect. Describe its effect on image contrast. b) Discuss Compton scatter production. Describe its effect on the radiographic image and how this can be minimised.

3. Write notes on each of the following in relation to veterinary radiology: a) film latitude b) intensifying screens c) grids d) personal dose monitors.

4. Describe how you would undertake a high quality radiographic examination of

EACH of the following three patients indicating the method of management of the patient, the positioning, radiographic technique and the equipment to be used: a) A cat with suspected spinal fractures following a dog attack b) A 13-year-old Weimaraner with megaoesophagus to evaluate for aspiration pneumonia c) A 7-year-old Warmblood gelding with navicular disease.

5. Radiography of the critically ill veterinary patient poses many challenges. A dog presents to your clinic in severe respiratory distress. Discuss how you would apply the pertinent Australia/New Zealand radiation safety regulations whilst obtaining radiographs of this patient.

Continued over/Veterinary Radiology 2007/Paper 1

Continued/Veterinary Radiology 2007/Paper 1

6. a) Write notes on EACH of the following in relation to veterinary diagnostic ultrasound: i) acoustic impedance ii) reverberation artefact. b) A colleague asks for your advice when choosing between plain radiography and abdominal ultrasound to evaluate the abdomen in EACH of the following conditions: i) complete small intestinal obstruction due to a foreign body ii) ruptured spleen mass with haemabdomen in an aged

German shepherd dog.

In EACH case, explain your first choice of imaging modality and justify your answer with respect to the tissue types you wish to image.

END OF PAPER

MEMBERSHIP EXAMINATION

JUNE/JULY 2007

VETERINARY RADIOLOGY

PAPER 2

Perusal time: 15 minutes

Time allowed: TWO (2) Hours after perusal

Answer FOUR (4) from six (6) questions only.

All questions are of equal value.

Subsections of Questions are of equal value unless stated otherwise

PAPER 2 – VETERINARY RADIOLOGY 2007

Answer FOUR (4) from six (6) questions only.

1. a) You and a colleague are reviewing radiographs of a nine-year-old male neutered Rottweiler with a history of hind limb lameness. Your colleague is convinced the radiographic diagnosis is severe osteoarthritis of the stifle.

You don’t agree and are concerned that the patient has a primary bone tumour of the distal femur. Which radiological features will help you to change your colleague’s mind?

b) You wish to perform a radiographic study of the elbow of a six-month-old male Labrador with suspected elbow dysplasia. List the radiographic views and describe the radiological changes you might expect to see in the views you have listed.

2. A six-month-old female entire Golden Retriever presents with urinary incontinence. List your differential diagnoses. Describe how you would use radiology to obtain a definitive diagnosis.

3. A three-year-old DSH cat with a recent history of being in a road traffic accident presents with dyspnoea. List your differential diagnosis and the radiological features of each condition listed.

4. Write notes on the radiological features of each of the following conditions in the dog: a) patent ductus arteriosus b) unstructured interstitial lung pattern c) prostatic neoplasia d) pancreatitis.

5. A yearling standardbred colt is presented to you with acute onset effusion of the left tarsus and grade 1/5 lameness in this limb. You suspect osteochondrosis. a) Describe the radiographic examination you would perform on this patient, including a list of the radiographic projections you would obtain, film/screen combination and radiographic technique b) Give TWO(2) common sites of osteochondrosis in the equine tarsus and describe, using Roentgen terminology, the radiographic appearance of each.

Continued over/Veterinary Radiology 2007/Paper 2

Continued/Veterinary Radiology 2007/Paper 2

6. You treated a horse with a wound over the third metacarpus 3 weeks ago. It healed well, but when antibiotics were stopped the wound broke open again and is now discharging purulent material. How might you use imaging to investigate this problem? Describe the imaging findings you might expect for your differential diagnoses.

END OF PAPER

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