target sign

A cross sectional appearance of the large intestine—enhanced mucosa and serosa and lucent central submucosa—caused by oedema or inflammation of bowel wall

target sign

GI imaging A smoothly-contoured radiopacity with both central and peripheral radiolucency, which may be seen in pedunculated colonic polyps, when viewed.en face by double contrast–air-contrast barium studies; an 'eccentric' target sign is seen in GI diverticuli where a small amount of radiocontrast enters the pouch and is surrounded by the radiopaque body of a diverticulum Lung imaging A circumscribed pulmonary aspergilloma or focus of necrotizing bronchopneumonia seen in a plain CXR. Cf Coin lesion.
References in periodicals archive ?
5) The classic ultrasound finding is of a target sign and emergency physicians with limited training can accurately diagnose ileocolic intussusception in children by using bedside ultrasonography.
A target sign is caused by mucosal hyperemia and submucosal edema.
One randomized pass-or-fail trial was conducted in which participants were given 10 minutes to locate and navigate toward the target sign using only the BrainPort.
Although target sign suggesting intussusception was observed in the ultrasound, cecum and colon appeared to be normal.
It puts a target sign on other peacekeepers and other UN staff for retribution by frustrated com munities.
1 MUSTAPHA CARAYOL: Boro's most potent attacking threat gave Rovers plenty of problems, particularly down the wing BORO 7 0 ROVERS 1 2 SHOTS OFF TARGET SIGN HIM ON TOP SCORERS BORO 1 ROVERS 3 BORO BOOKINGS: Chalobah, foul on Gestede 61 mins; Carayol, foul on Taylor, 66 mins.
The multiple concentric layers of the target sign represent the intussusceptum centrally, surrounded by its mesenteric fat and vasculature and finally encircled by the intussuscipiens.
An ultrasound scan of the abdomen showed jejuno-jejunal intussusception with a sandwich sign, pseudo-kidney sign, doughnut sign and target sign.
A repeat ultrasound demonstrated a target sign, consistent with intussusception.
An error in verb agreement just prior to the target sign slowed native signers but not delayed signers.
The number of reports of a target sign or signal made by the observers, expressed as a proportion of the maximum number of possible target reports for each class of road traffic control device, is called the hit rate and is taken as the measure of conspicuity of that class of sign or signal.
The target sign T-shirts are designed to raise funds to fight the disease and raise awareness of the issue.