(d) Why does a CT image have better soft tissue contrast than an X-ray image? (5 pts)
Solution
Computed tomography (CT) has better contrast resolution between tissues of differing density.
CT scan produces detailed and high-quality images of the body than the X- Ray. The CT scan is
a more sophisticated and powerful X-ray, which takes a 360o image of internal organs, the spine
and vertebrae. Contrast dyes are injected into the blood for clear visibility of structures within the
body on the CT scan.
CT scan creates detailed images of organs, bones, soft tissue and blood vessels. It can be used to
easily diagnose cancer, heart disease, appendicitis, musculoskeletal disorders, trauma and
infectious diseases. CT with multi-planar reconstruction provides a panoramic view of any
lesion. In the lung, CT permits to exact targeting of small lesions and tracking of movable lesions
located close to the diaphragm. CT is capable of resolving physical density differences in tissue
of less than 1%, permitting differentiation of normal and abnormal soft tissues.
CT uses X-rays to form high-contrast cross-sectional images of the body, which is based on the
differential X-ray absorption of tissues of differing density. It uses a rotating X-ray source to
generate radiation, which passes through the body onto an array of detectors.
Solution
Computed tomography (CT) has better contrast resolution between tissues of differing density.
CT scan produces detailed and high-quality images of the body than the X- Ray. The CT scan is
a more sophisticated and powerful X-ray, which takes a 360o image of internal organs, the spine
and vertebrae. Contrast dyes are injected into the blood for clear visibility of structures within the
body on the CT scan.
CT scan creates detailed images of organs, bones, soft tissue and blood vessels. It can be used to
easily diagnose cancer, heart disease, appendicitis, musculoskeletal disorders, trauma and
infectious diseases. CT with multi-planar reconstruction provides a panoramic view of any
lesion. In the lung, CT permits to exact targeting of small lesions and tracking of movable lesions
located close to the diaphragm. CT is capable of resolving physical density differences in tissue
of less than 1%, permitting differentiation of normal and abnormal soft tissues.
CT uses X-rays to form high-contrast cross-sectional images of the body, which is based on the
differential X-ray absorption of tissues of differing density. It uses a rotating X-ray source to
generate radiation, which passes through the body onto an array of detectors.
