| Cupola sign | |
|---|---|
 | |
| Cupola sign | |
| Differential diagnosis | pneumoperitoneum |
The cupola sign is seen on a supine chest or abdominal radiograph in the presence of pneumoperitoneum.
It refers to dependent air that rises within the abdominal cavity of the supine patient to accumulate underneath the central tendon of the diaphragm in the midline. It is seen as lucency overlying the lower thoracic vertebral bodies. The superior border is well defined, but the inferior margin is not.
"Cupola" is an architectural term, referring to a small dome (in particular, a small dome crowning a roof or a turret). The word derives from a Latin word for a "little cup".
In architecture, a cupola is a relatively small, most often dome-like, tall structure on top of a building. Often used to provide a lookout or to admit light and air, it usually crowns a larger roof or dome.
Filippo Brunelleschi, considered to be a founding father of Renaissance architecture, was an Italian architect, designer, and sculptor, and is now recognized to be the first modern engineer, planner, and sole construction supervisor. In 1421, Brunelleschi became the first person to receive a patent in the Western world. He is most famous for designing the dome of the Florence Cathedral, a feat of engineering that had not been accomplished since antiquity, as well as the development of the mathematical technique of linear perspective in art which governed pictorial depictions of space until the late 19th century and influenced the rise of modern science. His accomplishments also include other architectural works, sculpture, mathematics, engineering, and ship design. His principal surviving works can be found in Florence.
A dome is an architectural element similar to the hollow upper half of a sphere. There is significant overlap with the term cupola, which may also refer to a dome or a structure on top of a dome. The precise definition of a dome has been a matter of controversy and there are a wide variety of forms and specialized terms to describe them.
The Reichstag is a historic government building in Berlin which houses the Bundestag, the lower house of Germany's parliament.
An oculus is a circular opening in the center of a dome or in a wall. Originating in antiquity, it is a feature of Byzantine and Neoclassical architecture. It is also known as an œil-de-boeuf from the French, or simply a "bull's-eye".
Villa La Rotonda is a Renaissance villa just outside Vicenza in northern Italy designed by Italian Renaissance architect Andrea Palladio. The villa's correct name is Villa Almerico Capra Valmarana, but it is also known as "La Rotonda", "Villa Rotonda", "Villa Capra", and "Villa Almerico Capra". The name Capra derives from the Capra brothers, who completed the building after it was ceded to them in 1592. Along with other works by Palladio, the building is conserved as part of the World Heritage Site "City of Vicenza and the Palladian Villas of the Veneto".
A cupola is a relatively small, most often dome-like, tall structure on top of a building.
An onion dome is a dome whose shape resembles an onion. Such domes are often larger in diameter than the tholobate upon which they sit, and their height usually exceeds their width. These bulbous structures taper smoothly to a point.
Illusionistic ceiling painting, which includes the techniques of perspective di sotto in sù and quadratura, is the tradition in Renaissance, Baroque and Rococo art in which trompe-l'œil, perspective tools such as foreshortening, and other spatial effects are used to create the illusion of three-dimensional space on an otherwise two-dimensional or mostly flat ceiling surface above the viewer. It is frequently used to create the illusion of an open sky, such as with the oculus in Andrea Mantegna's Camera degli Sposi, or the illusion of an architectural space such as the cupola, one of Andrea Pozzo's frescoes in Sant'Ignazio, Rome. Illusionistic ceiling painting belongs to the general class of illusionism in art, designed to create accurate representations of reality.
Pneumoperitoneum is pneumatosis in the peritoneal cavity, a potential space within the abdominal cavity. The most common cause is a perforated abdominal organ, generally from a perforated peptic ulcer, although any part of the bowel may perforate from a benign ulcer, tumor or abdominal trauma. A perforated appendix seldom causes a pneumoperitoneum.
The Bibi-Khanym Mosque is one of the most important monuments of Samarkand, Uzbekistan. In the 15th century, it was one of the largest and most magnificent mosques in the Islamic world. It is considered a masterpiece of the Timurid Renaissance. By the mid-20th century, only a grandiose ruin of it still survived, but major parts of the mosque were restored during the Soviet period.
The Tomb of Jahangir is a 17th-century mausoleum built for the Mughal Emperor Jahangir. The mausoleum dates from 1637, and is located in Shahdara Bagh near city of Lahore, Pakistan, along the banks of the Ravi River. The site is famous for its interiors that are extensively embellished with frescoes and marble, and its exterior that is richly decorated with pietra dura. The tomb, along with the adjacent Akbari Sarai and the Tomb of Asif Khan, are part of an ensemble currently on the tentative list for UNESCO World Heritage status.
Gregorio de Ferrari was an Italian Baroque painter of the Genoese School.
Eastern Orthodox church architecture constitutes a distinct, recognizable family of styles among church architectures. These styles share a cluster of fundamental similarities, having been influenced by the common legacy of Byzantine architecture from the Eastern Roman Empire. Some of the styles have become associated with the particular traditions of one specific autocephalous Orthodox patriarchate, whereas others are more widely used within the Eastern Orthodox Church.
The Almoravid Qubba, or Qubba Ba'adiyyin/Barudiyyin, is a small monument in Marrakech, Morocco. It was erected by the Almoravid dynasty in the early 12th century. It is notable for its extraordinary decoration and for being one of the only remnants of Almoravid architecture in Marrakech.
An abdominal x-ray is an x-ray of the abdomen. It is sometimes abbreviated to AXR, or KUB.
A qubba, also transliterated as ḳubba, kubbet and koubba, is a cupola or domed structure, typically a tomb or shrine in Islamic architecture. In many regions, such as North Africa, the term qubba commonly the tomb of a local wali or marabout, and usually consists of a chamber covered by a dome or pyramidal cupola.
Jama Masjid, also known as Jumah Mosque or Jami' Masjid, is a mosque in Ahmedabad, and was built in 1424 during the reign of Ahmad Shah I. The inscription on the central mihrab commemorates the inauguration of the mosque on the 1st Safar A.H. 827 or January 4, 1424 A.D. by Sultan Ahmad Shah I. The mosque lies in the old walled city, and it is situated outside Bhadra Fort area. The old walled city is divided into separate quarters or pols, and the Jami' Masjid is found on the Gandhi Road. Along the south side of the road, the mosque is a short distance beyond the Teen Darwaza or Tripolia Gate.
The early domes of the Middle Ages, particularly in those areas recently under Byzantine control, were an extension of earlier Roman architecture. The domed church architecture of Italy from the sixth to the eighth centuries followed that of the Byzantine provinces and, although this influence diminishes under Charlemagne, it continued on in Venice, Southern Italy, and Sicily. Charlemagne's Palatine Chapel is a notable exception, being influenced by Byzantine models from Ravenna and Constantinople. The Dome of the Rock, an Umayyad Muslim religious shrine built in Jerusalem, was designed similarly to nearby Byzantine martyria and Christian churches. Domes were also built as part of Muslim palaces, throne halls, pavilions, and baths, and blended elements of both Byzantine and Persian architecture, using both pendentives and squinches. The origin of the crossed-arch dome type is debated, but the earliest known example is from the tenth century at the Great Mosque of Córdoba. In Egypt, a "keel" shaped dome profile was characteristic of Fatimid architecture. The use of squinches became widespread in the Islamic world by the tenth and eleventh centuries. Bulbous domes were used to cover large buildings in Syria after the eleventh century, following an architectural revival there, and the present shape of the Dome of the Rock's dome likely dates from this time.
Islamic rule in South Asia brought with it the use of domes constructed with stone, brick and mortar, and iron dowels and cramps. Centering was made from timber and bamboo. The use of iron cramps to join together adjacent stones was known in pre-Islamic India, and was used at the base of domes for hoop reinforcement. The synthesis of styles created by this introduction of new forms to the Hindu tradition of trabeate construction created a distinctive architecture.
 | This medical sign article is a stub. You can help Wikipedia by expanding it. |