Tuesday, April 20, 2010

Review Questions for Tuesday April 20, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Radiation Biology

1. When the human body is exposed to ionizing radiation, a commonly altered molecule is: ?

A. Water, H2O
B B. Deoxyribonucleic Acid, DNA
C. Ribonucleic Acid, RNA
D. Carbon Dioxide, CO2

Topic: Delivery

2. Given an initial mean seed activity of 220 uCi (microcurries), in three half lives of Palladium 103; Pd-103 the mean seed activity will measure approximately: ?

A. 217 uCi
B. 157 uCi
C. 87 uCi
D. 55 uCi

Topic: Treatment

3. A treatment is planned for 100cm SSD but is delivered at 106cm SSD. What mistake in dose delivered takes place?

A. Over treatment by: ~ 6%
B. Under treatment by: ~ 6%
C. Under treatment by: ~ 9%
D. Under treatment by: ~ 11%

Check your answers here

Review Questions for Monday April 19, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Interactions

1. Photon gamma rays strike an object and scattered radiation results. The production of scattered radiation likely results from: ?

A. Compton effects
B. Bremsstralung effects
C. Characteristic effects
D. Photoelectric effects

Topic: Delivery

2. The half life of Palladium 103; Pd-103, is 17 days. Pd-103 brachytherapy seeds are typically used for: ?

A. Intrauterine HDR
B. Prostate HDR
C. Prostate LDR
D. Intrauterine LDR

Topic: Physics

3. The International units, SI given for the measurement of radioactivity are: ?

A. Coulombs
B. Grays
C. Sieverts
D. Becquerels

Check your answers here

Review Questions for Sunday April 18, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Interactions

1. You are give the activity of a radioactive source; which is, 800 mCi (millicuries) and the half life of the source; that is, 6 hours. What will the activity of the source be in 12 hours?

A. 800 millicuries
B. 600 millicuries
C. 300 millicuries
D. 200 millicuries

Topic: Delivery

2. The half life of Iodine 125; I125 is approximately ________ ?

A. 120 days
B. 90 days
C. 60 days
D. 50 days

Topic: Physics

3. The frequency of a wave is measured in hertz (Hz). The frequency can be defined as: ?

A. The height of a given wave
B. The distance a given wave travels
C. The number of waves cycles per second
D. The speed of a photon

Check your answers here

Saturday, April 17, 2010

Review Questions for Saturday April 17, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Interactions

1. Another name for breaking radiation that is produced when an accelerated electron is deflected by an atomic nucleus producing a photon is called: ?

A. Bremsstrahlung radiation
B. Photoelectric radiation
C. Compton radiation
D. Characteristic radiation

Topic: Delivery

2. The half life of Cs137 is approximately ________ ?

A. 20 years
B. 25 years
C. 30 years
D. 35 years

Topic: Patient Care

3. When transferring a patient from a stretcher to the radiation therapy treatment couch, the radiation therapist should provide: ?

A. assistance, if asked
B. assistance at all times
C. verbal assistance
D. assistance, as needed

Check your answers here

Friday, April 16, 2010

Review Questions for Friday April 16, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Anatomy - Thorax

1. Gas exchange, including oxygen exchange takes place in these thin walled sacs called: ?

A. Bronchus
B. Bronchioles
C. Alveoli
D. Bronchi

Topic: Quality Assurance

2. Dynamic wedge factors on a linear accelerator are to be checked by a Medical Physicist on a ________ frequency basis?

A. Daily
B. Weekly
C. Monthly
D. Annual

Topic: Safety

3. For occupationally exposed individuals, the whole body exposure limit in rems in a calendar year is equal to?

A. 50.0 sievert
B. 5.0 sievert
C. 0.5 sievert
D. 0.05 sievert

Check your answers here

Review Questions for Thursday April 15, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Treatment Planning

1. What is the equivalent square (EqSq) of a rectangular field measuring 8cm by 18cm?

A. 10.20 cm
B. 10.93 cm
C. 11.07 cm
D. 11.68 cm

Topic: Treatment

2. The Sanford technique is a method used for:?

A. Prostate irradiation
B. Total skin irradiation
C. Breast irradiation
D. Total lung irradiation

Topic: Treatment

3. Daily safety checks on the linear accelerator include all of the following Except: ?

A. Laser localization
B. Audio video function
C. Beam ON indication
D. Vault shielding

Check your answers here

Wednesday, April 14, 2010

Review Questions for Wednesday April 14, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Treatment

1. During patient positioning, a belly board is used to:?

A. Provide patient comfort with the patient in the supine position
B. Provide patient comfort with the patient in the prone position
C. To remove the belly from the treatment field
D. To include the belly in the treatment field

Topic: Anatomy – Brain

2. The sinuses found in the infraorbital regions under the zygomatic bones (cheek bones) in the face are called?

A. Frontal sinus
B. Maxillary sinus
C. Sphenoid sinus
D. Ethmoid sinus

Topic: Treatment Simulation

3. A patient is positioned with their arms akimbo; this means that the patient’s arms are:?

A. The patient’s arms are placed by their sides
B. The patient’s arms are crossed and lie above their chest
C. The patient’s arms are raised above their heads
D. The patient’s arms are bowed outwards with their hands on their hips

Check your answers here

Tuesday, April 13, 2010

Review Questions for Tuesday April 13, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Treatment

1. During patient positioning, shoulder straps are used to:?

A. Provide patient comfort
B. To pull the shoulders caudal to the treatment field
C. To push the shoulders cranial into the treated volume
D. Allow the patient to hold arms akimbo

Topic: Anatomy – Brain

2. The grooves and the ridges on the surface of the brain are called?

A. Faulx Cerebri
B. Sulci and Gyri
C. Corpus Callosum
D. Temporal Lobe

Topic: Treatment Simulation

3. MV port films taken at treatment compared to kV films taken during conventional simulation are:?

A. MV films are of better contrast than kV films
B. MV films are of the same contrast as kV films
C. kV films are of better contrast than MV films
D. kV films are of the same contrast as MV films

Check your answers here

Review Questions for Monday April 12, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Radiation Biology

1. The Acute Radiation Syndrome (ARS) term which refers to damage of the brain and spinal canal is called the: ?

A. Dromal syndrome
B. Hematopoietic syndrome
C. GI syndrome
D. CNS syndrome

Topic: Anatomy – Spine

2. How many vertebras are present in the normal cervical spine?

A. 5 vertebrae
B. 7 vertebrae
C. 9 vertebrae
D. 12 vertebra

Topic: Treatment Planning - MRI

3. In a T1 weighted MRI image of the brain fat appears ________ and cerebrospinal fluid (CSF) ________ appears?

A. Dark, Dark
B. Dark, Bright
C. Bright, Bright
D. Bright, Dark

Check your answers here

Sunday, April 11, 2010

Review Questions for Sunday April 11, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Treatment

1. The intent of a course of radiation therapy is to alleviate pain. The intent may be termed:? :

A. Curative therapy
B. Palliative therapy
C. Definitive therapy
D. Preventive therapy

Topic: Anatomy – Spine

2. How many vertebras are present in the normal lumbar spine?

A. 5 vertebrae
B. 7 vertebrae
C. 9 vertebrae
D. 12 vertebra

Topic: Treatment Planning

3. What is the equivalent square (EqSq) of a rectangular field measuring 9cm by 20cm?

A. 6.21 cm
B. 12.41 cm
C. 13.20 cm
D. 14.41 cm

Check your answers here

Saturday, April 10, 2010

Review Questions for Saturday April 10, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Radiobiology

1. Another name for stochastic effect is: ? :

A. Probabilistic effect
B. Persistent effect
C. Deterministic effect
D. Latency effect

Topic: Anatomy – Treatment Planning -MRI

2. In a T2 weighted MRI iamge of the brain far appears ________ and cerebrospinal fluid (CSF) ________ appears?

A. Dark, Dark
B. Less Bright, Dark
C. Dark, Less Bright
D. Less Bright, Bright

Topic: Treatment

3. An orthovoltage (kv xray) radiation therapy treatment is often used for: ?

A. Superficial treatments
B. Prostate treatments
C. Breast treatments
D. Palliative treatments

Check your answers here

Friday, April 9, 2010

Review Questions for Friday April 9, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Treatment

1. A typical radiotherapy prescription induces the following items EXCEPT:

A. The site
B. The dose in cGy or Gy
C. Monitor units
D. Number of fractions

Topic: Anatomy – Cranium and Facial Bones

2. The large opening in the base of the skull is called the:?

A. Brain Stem
B. Foramen Magnum
C. Pons
D. Cerebellum

Topic: Treatment Planning

3. What is the equivalent square (EqSq) of a rectangular field measuring 6cm by 14cm?

A. 8.21 cm
B. 8.40 cm
C. 8.62 cm
D. 8.85 cm

Check your answers here

Thursday, April 8, 2010

Review Questions for Thursday April 8, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Treatment Accessories

1. A MV photons cerrobend block measures 7.5 cm in height. What thickness of pure lead is this cerrobend block equivalent to?

A. 5.0 cm
B. 5.5 cm
C. 6.0 cm
D. 6.5 cm


Topic: Treatment Planning

2. The most common position a patient is placed in for radiotherapy is?

A. Head first supine
B. Feet first supine
C. Head first prone
D. Feet first prone


Topic: Treatment Delivery

3. In a linear accelerator, the most significant device interacting with an electron beam to create uniform fluence is called the?


A. Bending magnet
B. Transmission target
C. Rotating anode
D. Scattering foil


Check your answers here

Wednesday, April 7, 2010

Review Questions for Wednesday April 7, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Treatment

1. A typical radiotherapy prescription induces the following items EXCEPT:

A. The photon or electron energy
B. The dose in cGy or Gy
C. Monitor units
D. Number of fractions


Topic: Anatomy - Pelvis

2. Seminal vesicles are found in which anatomy?

A. Adult female pelvis anatomy
B. Adult male pelvis anatomy
C. Child female pelvis anatomy
D. Child male abdominal anatomy


Topic: Dose Calculation

3. At what depth does the maximum dose (Dmax) for an enface photon beam of 6X photons appear?

A. 1.2 cm
B. 1.5 cm
C. 2.5 cm
D. 3.3 cm

Check your answers here

Tuesday, April 6, 2010

Review Questions for Tuesday April 6, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Treatment

1. A patient is prescribed a dose of 4,5oo cGy over 25 fractions. The daily fractionation of 18o cGy is supposed to be delivered at 100cm SSD. What is the patient’s total dose if patient is treated at 90 cm SSD?

A. 3,655 cGy
B. 4,755 cGy
C. 5,555 cGy
D. 6,455 cGy


Topic: Anatomy - Spine

2. How many vertebra are present in the thoracic spine?

A. 5 vertebrae
B. 7 vertebrae
C. 9 vertebrae
D. 12 vertebrae


Topic: Treatment Planning

3. What is the equivalent square (EqSq) of a rectangular field measuring 8cm by 15cm?

A. 9.23 cm
B. 10.43 cm
C. 11.20 cm
D. 12.46 cm


Check your answers here

Monday, April 5, 2010

Review Questions for Monday April 5, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Atomic Physics

1. What is the term used to describe an electron that is elevated to a higher enegy orbital shell within the same atom?

A. Ionization
B. Excitation
C. Elevation
D. Promotion


Topic: Electromagnetic Radiation

2. Which energy of the electromagnetic range has the shortest wavelength?

A. 18 X photons
B. 6 X photons
C. 22MeV electrons
D. 12 MeV electrons



Topic: Radiation Detection & Measures

3. Radioactivity is measured in SI (International System) terms of: ?

A. Curie
B. Gray
C. Roentgen
D. Becquerel


Check your answers here.