KEY TERMS Print Section Listen Key Terms Volumetric (three-dimensional) imaging: recording and interacting with images that reproduce a structure’s dimensions of length, width, and height, rather than individual tomographic slices….
KEY TERMS Print Section Listen Key Terms Diffusion-weighted imaging (DWI): an MR sequence that has increased signal when Brownian motion of water molecules is restricted, such as highly cellular tumors,…
KEY TERMS Print Section Listen Key Terms Fibrous stroma: a low signal band on T2-weighted images in the cervix that is continuous with the junctional zone of the uterine body…
INTRODUCTION Print Section Listen Three-dimensional ultrasonography (3DUS) can be combined with conventional two-dimensional ultrasonography (2DUS) for the evaluation of normal and abnormal fetal anatomy. Development of cost-effective high-performance computers and…
INTRODUCTION Print Section Listen Fetal echocardiography was introduced to clinical medicine in the early 1980s when the first studies reported its use for evaluation of cardiac arrhythmias as well as…
KEY TERMS Print Section Listen Key Terms Atresia: derives from Greek α–τρησία which means absence of perforation. In gastrointestinal atresia there is interruption of the lumen continuity at some point…
KEY TERMS Print Section Listen Key Terms Three-dimensional ultrasonography (3DUS, or volume ultrasound): an imaging method that fundamentally converts the acquired digital 2D picture elements (pixels) into a 3D volume….
KEY TERMS Print Section Listen Key Terms Adnexal: refers to tube and ovary and adjacent area in the female pelvis. Cystic mass: refers to a mass containing fluid and having…
KEY TERMS Print Section Listen Key Terms Ballooning: enlargement of the levator hiatus to 25 cm2 or more on Valsalva. Bladder neck descent: the extent of caudal movement of the…
KEY TERMS Print Section Listen Key Terms Bicornuate uterus: a uterine abnormality resulting from complete failure of the two embryologic uterine horns to fuse, thereby most commonly resulting in one…
