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[[Image:PLAX_Mmode.jpg|thumb|alt=Alt text|Image showing the left parasternal long axis transection (PSLAX) of the heart by M-mode imaging.]] | [[Image:PLAX_Mmode.jpg|thumb|alt=Alt text|Image showing the left parasternal long axis transection (PSLAX) of the heart by M-mode imaging.]] | ||
Determining left ventricular dimensions and ejection fraction are few of the cases wherein M-mode imaging is used. It is one-dimensional and usually relies on the correct alignment of the M-mode along the left ventricle. | Determining left ventricular dimensions and ejection fraction are few of the cases wherein M-mode imaging is used. It is one-dimensional and usually relies on the correct alignment of the M-mode along the left ventricle. | ||
==Using Color Doppler Ultrasound== | ==Using Color Doppler Ultrasound== | ||
It is sometimes necessary to use color Doppler ultrasound when valvular regurgitation is suspected, although this method should not be used to as the final diagnostic tool to determine valve dysfunction as the Doppler beam is nearly perpendicular to the flow. Instead, the presence of valvular regurgitation is based on the cardiac cycle, not the color-coding.<cite>Feigenbaum1</cite>. Another citation <cite>test</cite> | It is sometimes necessary to use color Doppler ultrasound when valvular regurgitation is suspected, although this method should not be used to as the final diagnostic tool to determine valve dysfunction as the Doppler beam is nearly perpendicular to the flow. Instead, the presence of valvular regurgitation is based on the cardiac cycle, not the color-coding.<cite>Feigenbaum1</cite>. Another citation <cite>test</cite> | ||