Computed Tomography Imaging || with Complete Solutions.
The tissue most likely to have a CT number of +800 HU is: correct answers Cortical bone
Which type of compute tomographic imaging technique is employed to provide 3D
reconstruction that demonstrates the relationship between vascular structures and the surrounding
organs and tissues? correct answers CT angiography
When computed tomography is used as part of a therapeutic workup or treatment program, it is
important to: correct answers Employ the same position during imaging as in the treatment
Prior to a scout computed tomographic examination of the abdomen, Buscopan or Glucagon is
administered to: correct answers Reduce motion artifacts
Which of the following has CT numbers in the range of +50 +75 HU? correct answers Spleen
The main advantage associated with a reduction in the computed tomographic scan time is:
correct answers A reduction in the patient motion
The principle reason a contrast-enhanced CT study is nearly always performed after the non-
contrast imaging is to: correct answers Localize the lesion or target organ
During CT imaging of the spine, in order to distinguish inter-spinal soft tissues, a high contrast
resolution can be maintained by use of: correct answers Thicker slices and reduced image noise
A patient involved in a car accident is brought to the radiology department for CT scan of the
head. Which lesion is most readily detected on non-contrast images? correct answers Acute
subdural hematoma
The most common detector used is a modern single or multi-slice CT scanner consists of a:
correct answers Scintillation crystal photodiode assembly
During CT imaging, the number of counts per picture element is NOT related to which of the
following: correct answers The temperature of the tissue
A pixel with a size of 2 millimeter refers to its size on the: correct answers Imaged structure
During CT imaging, if the counting statistics (precision) are kept consistent, the increased
resolution of a smaller voxel can be accomplished at the cost of a/an: correct answers Larger
patient exposure
The support couch for a CT unit must be strong enough to support the weight of the patient and
have a low attenuation to the x-ray beam. At the present time, the material that seems to best
meet these criteria are: correct answers Carbon fiber composites
The tissue most likely to have a CT number of +800 HU is: correct answers Cortical bone
Which type of compute tomographic imaging technique is employed to provide 3D
reconstruction that demonstrates the relationship between vascular structures and the surrounding
organs and tissues? correct answers CT angiography
When computed tomography is used as part of a therapeutic workup or treatment program, it is
important to: correct answers Employ the same position during imaging as in the treatment
Prior to a scout computed tomographic examination of the abdomen, Buscopan or Glucagon is
administered to: correct answers Reduce motion artifacts
Which of the following has CT numbers in the range of +50 +75 HU? correct answers Spleen
The main advantage associated with a reduction in the computed tomographic scan time is:
correct answers A reduction in the patient motion
The principle reason a contrast-enhanced CT study is nearly always performed after the non-
contrast imaging is to: correct answers Localize the lesion or target organ
During CT imaging of the spine, in order to distinguish inter-spinal soft tissues, a high contrast
resolution can be maintained by use of: correct answers Thicker slices and reduced image noise
A patient involved in a car accident is brought to the radiology department for CT scan of the
head. Which lesion is most readily detected on non-contrast images? correct answers Acute
subdural hematoma
The most common detector used is a modern single or multi-slice CT scanner consists of a:
correct answers Scintillation crystal photodiode assembly
During CT imaging, the number of counts per picture element is NOT related to which of the
following: correct answers The temperature of the tissue
A pixel with a size of 2 millimeter refers to its size on the: correct answers Imaged structure
During CT imaging, if the counting statistics (precision) are kept consistent, the increased
resolution of a smaller voxel can be accomplished at the cost of a/an: correct answers Larger
patient exposure
The support couch for a CT unit must be strong enough to support the weight of the patient and
have a low attenuation to the x-ray beam. At the present time, the material that seems to best
meet these criteria are: correct answers Carbon fiber composites
