MDCB questions And Answers Verified by
Experts
What will result if a photon field abuts an electron field at the skin surface? a photon side
hot spot, electron side cold spot
Ap and RPO and LPO would make a hexagon shape
The radiation therapy technique which utilizes many shaped beams which may not conform to
the target volume to achieve a highly conformal distribution is: intensity modulated
radiation therapy
Characteristics of multileaf collimators, in current medical linacs, include which of the
following: "scalloped" isodose curves in the penumbra region
The minimum nominal distance a tissue compensator should be placed from the skin surface
without affecting the skin sparing effect is? 20cm
,Rounded ends on the leaves of a multi-leaf collimator are used to: achieve a constant
penumbra as field size varies
Which calculation method independently calculates the primary and the scattered components of
dose at a point in the calculation volume? convolution superposition
When an isocentric tech is used in place of an SSD technique (both beams treated at 100 SSD) to
deliver the same dose to a patient with two parallel opposed fields, the ratio of maximum
dose to midpoint dose is increased
Based on NCRP recommendations, which of the following is/are guidelines regarding pregnancy
and radiation exposure pregnant medical radiation workers can be considered
occupationally exposed individuals
The dose response model applied to establishing dose limits for occupational workers is the
Linear no-threshold model
Which of the followning statements are true the term "caution" or "danger" may be used
in "high radiation areas"
, Which of the following is excluded from " the health insurance portability and accountability act
of 1996" public statistics authorities
The industry-standard format for transferring images between components of a network is called:
digital imaging and communications in medicine (DICOM)
How many bytes constitute a gigabyte 1e9
The five year cure rate for a bladder cancer tumor treated with primary radiation is 25-
30%
Which of the following nuclear transitions produces only gamma radiation? Isomeric
Metastable isomers A nucleus produced this way generally starts its existence in an excited state
that relaxes through the emission of one or more gamma rays tc 99m
The fusion of MRI and CT images is used in head and neck tumors. The most appropriated MRI
sequence is a : T2 image
Experts
What will result if a photon field abuts an electron field at the skin surface? a photon side
hot spot, electron side cold spot
Ap and RPO and LPO would make a hexagon shape
The radiation therapy technique which utilizes many shaped beams which may not conform to
the target volume to achieve a highly conformal distribution is: intensity modulated
radiation therapy
Characteristics of multileaf collimators, in current medical linacs, include which of the
following: "scalloped" isodose curves in the penumbra region
The minimum nominal distance a tissue compensator should be placed from the skin surface
without affecting the skin sparing effect is? 20cm
,Rounded ends on the leaves of a multi-leaf collimator are used to: achieve a constant
penumbra as field size varies
Which calculation method independently calculates the primary and the scattered components of
dose at a point in the calculation volume? convolution superposition
When an isocentric tech is used in place of an SSD technique (both beams treated at 100 SSD) to
deliver the same dose to a patient with two parallel opposed fields, the ratio of maximum
dose to midpoint dose is increased
Based on NCRP recommendations, which of the following is/are guidelines regarding pregnancy
and radiation exposure pregnant medical radiation workers can be considered
occupationally exposed individuals
The dose response model applied to establishing dose limits for occupational workers is the
Linear no-threshold model
Which of the followning statements are true the term "caution" or "danger" may be used
in "high radiation areas"
, Which of the following is excluded from " the health insurance portability and accountability act
of 1996" public statistics authorities
The industry-standard format for transferring images between components of a network is called:
digital imaging and communications in medicine (DICOM)
How many bytes constitute a gigabyte 1e9
The five year cure rate for a bladder cancer tumor treated with primary radiation is 25-
30%
Which of the following nuclear transitions produces only gamma radiation? Isomeric
Metastable isomers A nucleus produced this way generally starts its existence in an excited state
that relaxes through the emission of one or more gamma rays tc 99m
The fusion of MRI and CT images is used in head and neck tumors. The most appropriated MRI
sequence is a : T2 image
