Cross-sectional imaging
Updates to Article Attributes
Cross-sectional imaging is usually used to refer to CT, MRI, PET, and SPECT and related imaging techniques, that view the body in cross-section i.e. as axial (cross-sectional) slices.
Ultrasonography is sometimes included under this umbrella term, especially with reference to echocardiography, which produces standardised axial slices through the heart. However in the mainmost radiologists considerdo not tend to think of ultrasound to beas a non-crosscross-sectional technique likesince although it generates two-dimensional image "slices" of the body, the angle of the slices are often not perpendicular to the axis of the body.
Examples of imaging techniques that are not cross-sectional include plain radiography, and fluoroscopy. The techniques rely on projection of an x-ray beam through an object to a receptor. Planar nuclear medicine planar is also not cross-sectional, although the imaging radiation is emitted from the object of interest, rather than passed through it.
History and etymology
Cross-sectional imaging was being used as an imaging term in the mid-1970s in some of the early CT papers 1.
-<p><strong>Cross-sectional imaging</strong> is usually used to refer to <a href="/articles/computed-tomography">CT</a>, <a href="/articles/mri-introduction">MRI</a>, <a href="/articles/positron-emission-tomography">PET</a>, and <a href="/articles/spect-vs-pet">SPECT</a> and related imaging techniques, that view the body in cross-section i.e. as axial (cross-sectional) slices. <a href="/articles/ultrasound-introduction">Ultrasonography</a> is sometimes included under this umbrella term, especially with reference to echocardiography, which produces standardised axial slices through the heart. However in the main radiologists consider ultrasound to be a non-cross-sectional technique like <a href="/articles/x-rays-1">plain radiography</a> and <a href="/articles/fluoroscopy">fluoroscopy</a>.</p><h4>History and etymology</h4><p>Cross-sectional imaging was being used as an imaging term in the mid-1970s in some of the early CT papers <sup>1</sup>.</p>- +<p><strong>Cross-sectional imaging</strong> is usually used to refer to <a href="/articles/computed-tomography">CT</a>, <a href="/articles/mri-introduction">MRI</a>, <a href="/articles/positron-emission-tomography">PET</a>, and <a href="/articles/spect-vs-pet">SPECT</a> and related imaging techniques, that view the body in cross-section i.e. as axial (cross-sectional) slices.</p><p><a href="/articles/ultrasound-introduction">Ultrasonography</a> is sometimes included under this umbrella term, especially with reference to echocardiography, which produces standardised axial slices through the heart. However most radiologists do not tend to think of ultrasound as a cross-sectional technique since although it generates two-dimensional image "slices" of the body, the angle of the slices are often not perpendicular to the axis of the body.</p><p>Examples of imaging techniques that are not cross-sectional include <a href="/articles/x-rays-1">plain radiography</a>, and <a href="/articles/fluoroscopy">fluoroscopy</a>. The techniques rely on projection of an x-ray beam through an object to a receptor. Planar nuclear medicine planar is also not cross-sectional, although the imaging radiation is emitted from the object of interest, rather than passed through it.</p><h4>History and etymology</h4><p>Cross-sectional imaging was being used as an imaging term in the mid-1970s in some of the early CT papers <sup>1</sup>.</p>
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