SC35
DRLs
Facility and Equipment Requirements
Imaging Fun
Imaging Fun 2
100
Which is inccorrect? Somatic Effects are:
A) Observable changes occurring in the body's organs.
B) Non observable changes occurring in the body's organs.
C) Dependant on the amount and duration of exposure.
D) Appear in a few hours or after many years.
B) Non-observable changes occurring in the body's organs.
100
DRLs are not limits, but a guideline to optimize doses during procedures. T/F?
True.
100
Radiation levels in controlled areas that are occupied routinely by radiation workers must be such that no radiation worker is exposed to more than:
a) 15 mSv/year
b) 20 mSv/year
c) 25 mSv/year
d 30 mSv/year
b) 20 mSv/year
100
Which identifies the right capitellum of the humerus?
1!
100
Which label identifies the right atrium of the heart?
1!
200
Which is/are correct? Genetic effects can have:
A) No observable damage
B) Cause chromosomal damage in germ cells.
C) A and B
D) Are minor changes that do not have a big effect on the body.
E) A and D
C) A and B
Cause chromosomal damage in germ cells and no observable damage.
200
What is the purpose of Diagnostic Reference Levels (DRLs)?
a) To protect technologists from receiving high levels of radiation.
b) To promote better control of patient exposures to x-rays.
c) To increase the understanding of patient exposure and the effect on patients.
b) To promote better control of patient exposures to x-rays.
200
The radiation levels in uncontrolled areas must be such that no person receives more than:
a) 1 mSv/year
b) 3 mSv/year
c) 5 mSv/year
d) 4 mSv/ year
a) 1 mSv/year
200
Which numbered arrow indicates the lentiform nucleus?
51
200
Which label indicates the caudate nucleus?
50
300
The no-threshold hypothesis states:
A) That the health risk from radiation exposure is proportional to the dose.
B) That the health risk from radiation exposure is not proportional to the dose.
C) If you minimize patient exposure, there is no-threshold.
D) If you maximize patient exposure, there is no-threshold.
a) That the health risk from radiation exposure is proportional to the dose.
300
Which is false about DRLs?
a) DRLs are universal across Canada.
b) DRLs can be established in two ways.
c) Each facility must establish DRLs for procedures relevant to them.
d) DRLs are based on typical examinations of standardized patient or phantom sizes.
a)DRLs are universal across Canada.
300
The x-ray tube must be enclosed in a shielded housing. This shielding must be such that the leakage radiation from the x-ray sources does not exceed and air kerma rate of ____ mGy/h at a distance of 1 m away from the focal spot.
a) 1.0
b) 1.5
C) 2
D) 5
a) 1.0
300
Which patient has cecal volvulus?
b) Patient A has a sigmoid volvulus with typical three lines representing the walls of the sigmoid seen. This is known as the Frimann-Dahl sign or coffee bean appearance. In addition, the more proximal portions of the large bowel are seen to be distended (descending colon, transverse colon) and the cecum can be seen in the correct position which further assists in confirming the diagnosis of sigmoid volvulus. Patient B has a cecal volvulus with a single large distended gas filled viscus in the central abdomen with a horizontal fold. The lack of any gas distending the rest of the large bowel, and the lack of a cecum visible in its normal position further assist in making the diagnosis of cecal volvulus.
300
What is the diagnosis?
A) Adamantinoma
b) Osgood-Schlatter disease
c) osteochondroma
d) Tibial tug lesion
C) Osteochondroma
There is a bone growth directed away from the knee joint and which is continuous with the medullary cavity. Appearance is typical of osteochondroma.
400
Which is not a section of SC35?
a) Responsibilities and Protection
b) Facility and Equipment Requirements
c) Delegation and Responsibilities
d) Quality Assurance Program
c) Delegation and Responsibilities
400
To establish DRLs, which is acceptable?
a) Patient must be 100 kg and 20 patients must be used.
b) A phantom specifically designed for the procedure.
c) Any phantom, as long as it is continuously used to determine the DRLs.
d) Patients must be 50-90kg and minimum 10 patients used.
e) B and E
f) B and D
e) B and E
400
Which is not a primary barrier?
a) X-ray control booth.
b) Walls
c) Floor
d) Ceiling
e) A and D
e) A and D
400
This 70 y/o woman presented with foot pain. Which toe shows evidence of gout?
2nd toe
There is a juxta-articular erosion at the medial aspect head of the second middle phalanx and also at the lateral aspect base of the second distal phalanx. These appear punched-out, with the middle phalanx erosion demonstrating an overhanging edge, highly suggestive of gout. Mild associated soft tissue swelling. No convincing radiographic evidence of gout elsewhere in the foot.
400
Which of these diagnoses can be made on this single small bowel barium follow-through image?
a) Celiac disease
b) Crohn's Disease
c) Duodenal Diverticula
e) Scleroderma
c) Duodenal Diverticula
500
The aim of SC35 is to provide radiological facilities with information to achieve the following:
a) Minimize patient exposure to ionizing radiation while ensuring the necessary diagnostic information is obtained and treatment provided
b)Ensure adequate protection of personnel operating x-ray equipment
c) Ensure proper training on x-ray equipment
d) A and B
c) B and C
d) A and B
500
Which is not a way to determine entrance surface doses for establishing DRLs?
a) TLDs
b) Dose Area Product (DAP) meters
c) Linear Dose Product (LDP) meters
d) Through retrieved information from RIS
c) Linear Dose Product (LDP) meters
500
CT equipment is designed so that only secondary shielding must be provided. T/F?
True!
500
What is the diagnosis?
a) Anterior, inferior iliac spine avulsion
b) Anterior superior iliac spine avulsion
c) Left Slipped upper femoral epiphysis
d) Right slipped upper femoral epiphysis
a) Anterior inferior iliac spine avulsion
500
Which diagnosis should be suspected from this chest x-ray?
a) Aortic coarctation
b) Cystic fibrosis
c) lung cancer
d) pectus excavatum
c) lung cancer
There is a soft-tissue mass within the left lung apex. This proved to be a superior sulcus squamous cell carcinoma of lung (Pancoast tumor). The apex is an important check area on frontal chest radiographs. The aortic outline is normal with no figure 3 sign or inferior rib notching to suggest aortic coarctation. The brochovascular markings appear normal with no bronchiectasis to suggest cystic fibrosis. The right heart border is well seen and the orientation of the ribs is normal, which excludes pectus excavatum.