Though ultrasound is used as a diagnostic tool today, it was considered a therapy when it first appeared in medicine in the 1920s. Read on to learn how today's 3D and 4D ultrasounds work.
Ultrasound machines are complex pieces of equipment, but the basic principle is so simple a bat can use it. Send out high-pitched sound signals (so high-pitched humans can't hear them, in fact), and listen for them to bounce back. The time it takes for the sound to return tells you how close you are to another object, and sending dozens of these signals per second gives you a pretty good picture of the contours of the environment ahead of you and which bugs are juiciest. In the case of an ultrasound machine, these calculations typically map a 2D picture of a growing fetus in the womb. A 3D ultrasound takes this idea a step further, sending ultrasonic waves from a variety of angles around the body to provide a significantly more detailed picture. Adding the element of time results in a moving 3D image, often called a 4D ultrasound. Both 3D and 4D ultrasounds are elective procedures, most commonly used to show what a baby looks like and to identify its gender.
Though ultrasonic technology is used as a diagnostic tool today, it was considered a therapy when it first appeared in medicine in the 1920s, using much more intense ultrasonic energy to apply controlled heat to tissues deep within the body. However, in 1955, Professor Ian Donald of Glasgow University?s Department of Midwifery began to test its application to the diagnosis of tumors, creating a stir in the medical community when he identified a large but operable ovarian cyst in a patient who had been misdiagnosed with inoperable cancer of the stomach. In 1959 he discovered that the ultrasonic waves could provide images of fetuses as well, allowing doctors to study pregnancy at all stages, diagnose any complications, and help name the baby by seeing which celebrity it looks most like.
Cach? helps women turn heads with fun, vibrant outfits that transition easily from day to night. From lifestyle sportswear to cocktail dresses, the national specialty boutique has what women need to look fabulous before, during, and after their 9-to-5. To ensure a personalized shopping experience, stylists stand ready to advise customers in every boutique. Shoppers can even schedule a one-on-one appointment to streamline preparations for a special event.
Though these looks change from season to season, Cach? is known for incorporating bold prints and patterns into everything from floral pants and dresses to animal-print tops. On the flip side, Cach? also maintains an entire collection of LBDs?little black dresses?that fit in just as well at a cocktail party as they do at the office.
Pzaz Dresses drapes patrons in shimmering designer gowns fit for special occasions, proms, and weddings. Customers browse frocks in all the colors of the rainbow, color wheel, and Technicolor peacock within Pzaz’s overflowing show room. A Jovani drape-back jersey short dress ($320) wraps its wearer in royal blue, and a Jovani animal-print sequin short dress puts a glittery spin on traditional eveningwear ($300). Long layers of eye-grabbing fuchsia or gray mark the Night Moves evening dress by Allure, enveloping its wearer in auras of elegance. Touch Ups shoes ($30+) complement torsos and top hats with simple, single-color comfort that classes up pavement pounders more effectively than dressing toes in tiny tuxedos.
Using ingredients that are certified Kosher and organic, Green Apple Foods NY creates gourmet variants of classic fairground treats. Staff members pop kettle corn and popcorn fresh daily, in flavors such as jalapeño sea salt or cinnamon toast. Candy apples don toppings such as toasted coconut or s'mores marshmallows, which disguise them from vengeful apple trees looking to reclaim their lost offspring. All popcorn, cotton candy, and candy apples are handmade in a facility free of peanuts, without any trans fats. Green Apple Foods NY also partners with McBride Farms in Long Island to supply shoppers or lonesome salads with crisp, seasonal produce.
The two-wheeler wizards of Bike Discounters stock bicycles for all types of terrain from top manufacturers such as Schwinn, Redline, and Giant. They keep steeds streetwise with general cycle maintenance—including tire installations, gear adjustments, and wheel truing—as well as tune-ups and a shrine of Say No to Potholes bumper stickers. The shop also carries an extensive array of accessories, from Thule car carriers to Louis Garneau helmets and CamelBak hydration systems.