Items tagged “stub”
1,310 results found
Article
CT urography (protocol)
CT urography (CTU or CT IVU), also known as CT intravenous pyelography (CT IVP), has now largely replaced traditional IVU in imaging the genitourinary tract. It gives both anatomical and functional information, albeit with a relatively higher dose of radiation.
Indications
hematuria
urothelia...
Article
Draped aorta sign
The draped aorta sign is an important imaging feature that can be seen in contained rupture of an abdominal aortic aneurysm. It is highly indicative of aortic wall deficiency.
This sign is considered present when the posterior wall of an aortic aneurysm drapes or molds to the anterior surface ...
Article
Gradient coils
Gradient coils are used to produce deliberate variations in the main magnetic field (B0). There are three sets of gradient coils, one for each direction. The variation in the magnetic field permits localization of image slices as well as phase encoding and frequency encoding. The set of gradient...
Article
Holman-Miller sign (maxillary sinus)
The Holman-Miller sign (also called the antral sign) is seen in juvenile nasopharyngeal angiofibroma; it refers to the anterior bowing of the posterior wall of the maxillary antrum as seen on a lateral skull radiograph or cross-sectional imaging 1,2.
This is a non-specific sign that can be prod...
Article
Non-AIDS associated Kaposi sarcoma
Non-AIDS associated Kaposi's sarcoma is a localized process which rarely involves lymph nodes or organs.
For a discussion of Kaposi sarcoma in general, please refer to Kaposi sarcoma.
Epidemiology
Sporadic (non-AIDS associated) Kaposi sarcoma is mostly seen in elderly males from the Mediterr...
Article
Fleischner sign (enlarged pulmonary artery)
The Fleischner sign refers to a prominent central pulmonary artery that can be commonly caused either by pulmonary hypertension or by distension of the vessel by a large pulmonary embolus. It can be seen on chest radiographs, CT pulmonary angiography (CTPA), and MR pulmonary angiography (MRPA).
...
Article
Capitohamate coalition
Capitohamate coalition represents the congenital fusion of the capitate and the hamate. It is the second most common type of carpal coalition after lunotriquetral coalition. It represents ~5% of all carpal fusions 1 and is associated with Apert syndrome 2.
Article
Cockade sign (intraosseous lipoma)
The cockade sign describes the classic appearance of a calcaneal intraosseous lipoma seen as a well-defined lytic lesion with a central calcification.
History and etymology
It is named after a cockade, which is a badge, usually in the form of a rosette or knot, generally worn on the hat.
Article
Double track sign (pyloric stenosis)
The double track sign is a radiological sign described in pyloric stenosis on various imaging modalities.
Barium study
Double streaks of barium passing through the narrow pylorus 1.
Ultrasound
On fluid aided real-time examination, the pyloric fluid is compressed into smaller tracks as it is...
Article
Double contour sign (knee)
The double contour sign is a helpful radiologic sign of trochlear dysplasia and is seen on true lateral knee radiographs as a double line at the anterior aspect of condyles that occurs if the medial femoral condyle is hypoplastic.
Article
Wagstaffe-Le Fort fracture
A Wagstaffe-Le Fort fracture refers to an avulsion fracture of the medial aspect of the distal fibula due to avulsion of the anterior tibiofibular ligament attachment.
See also
lower extremity fractures
Article
Nutcracker fracture of the cuboid
A nutcracker fracture of the cuboid refers to a cuboid bone fracture with associated navicular avulsion fracture due to compression between the bases of 4th and 5th metatarsals and calcaneus bone. The injury usually occurs secondary to the traumatic abduction of the forefoot. This results in los...
Article
Lemaire procedure
The Lemaire procedure is an extra-articular reconstruction of a ruptured anterior cruciate ligament (ACL) using a graft of fascia lata. The Lemaire operation routes a strip of fascia lata through an osseous tunnel under the lateral head of the gastrocnemius muscle.
Article
Part solid lung nodule
A part-solid lung nodule (PSN) is a subtype of subsolid lung nodule. The term refers to a ground-glass nodule which contains one or more solid components with attenuation similar to a pulmonary vessel on non-contrast CT. High-resolution CT is necessary for analysis and AI promises improved chara...
Article
Humeral condyle fracture
Humeral condyle fractures represent fractures through the medial or lateral distal humeral condyles.
Article
Accessory fissures of the lung
Accessory fissures of the lung usually occur at the borders of bronchopulmonary segments. They are common normal variants but are less commonly seen on imaging.
Some of the more common accessory fissure include 1:
azygos fissure: most commonly seen accessory fissure
inferior accessory...
Article
Vertical fissure line in the lung
The vertical fissure line commences in or near the costodiaphragmatic recess and heads superomedially towards the hilum and terminates before or at the horizontal fissure. More commonly occurs on the right and may indicate partial volume loss of the lower lobe 1.
Article
Lung fissures
Lung fissures are double-folds of visceral pleura that either completely or incompletely invaginate lung parenchyma to form the lung lobes.
Each lung has an oblique fissure separating the upper lobes from the lower lobes and the right lung has a horizontal fissure that separates the right uppe...
Article
Inferior accessory fissure of the lung
The inferior accessory fissure of the lung, also known as Twining's line, divides the medial basal bronchopulmonary segment from the rest of the lower lobe 4.
Epidemiology
This accessory fissure is present in around 12% of people when examined with CT 3and is visible on 8% of PA chest x-rays 4...
Article
Paranasal sinuses retention cysts
Retention cysts of paranasal sinuses are common benign lesions usually discovered incidentally on a plain sinus radiograph or cross-sectional imaging of the head. They do not usually cause symptoms.
Terminology
They are also referred to as mucous retention cysts.
Epidemiology
It is difficul...
Unable to process the form. Check for errors and try again.