Two-year programs are most prevalent. Look for a program that is accredited by the Commission on Accreditation of Allied Health Education Programs (CAAHEP) . For information on how to become a registered diagnostic medical sonographer, see the American Registry for Diagnostic Medical Sonography.verview. Diagnostic medical sonographers use sound waves to generate images used for assessing and diagnosing various medical conditions. Many people associate sonography with pregnancy. It's how a fetus can be seen in the womb.
The porta hepatis, or hilum of the liver, is a deep, short, transverse fissure that passes across the left. posterior aspect of the undersurface of the right. lobe of the liver. It separates the caudate lobe and. process from the quadrate lobe and meets the. left sagittal fossa perpendicularly (1).
The caudate lobe (posterior hepatic segment I, Spigelian lobe) is situated upon the postero-superior surface of the liver on the right lobe of the liver, opposite the tenth and eleventh thoracic vertebrae.It is bounded on the left side by the physiological division of the liver called the ligamentum venosum.It is bounded, below, by the porta; on the right, by the fossa for the inferior vena cava; and, on the left, by the fossa for the ductus venosus.It looks backward, being nearly vertical in position; it is longer from above downward than from side to side, and is somewhat concave in the transverse direction.t is bounded on the left side by the physiological division of the liver called the ligamentum venosum. It is bounded, below, by the porta; on the right, by the fossa for the inferior vena cava; and, on the left, by the fossa for the ductus venosus.