2022年1月18日 · The flame sign refers to a gradual tapering of contrast opacification in the mid-cervical internal carotid artery, sparing the carotid bulb. The sign can be observed on angiography (digital subtraction angiography 1, CT angiography 1, or contrast-enhanced MR angiography 2) in either of two scenarios 3:

2025年2月11日 · The blade of grass sign, also called the candle flame sign, refers to the lucent leading edge in a long bone seen during the lytic phase of Paget disease of bone. The blade of grass sign is characteristic of Paget disease of bone. This is akin to osteoporosis circumscripta cranii seen in the skull.

2019年5月19日 · The flame sign has been described as a helpful MRI sign of spinal cord metastases, enabling them to be distinguished from other enhancing spinal cord lesions (e.g. ependymoma, astrocytoma and hemangioblastoma) 1.

2022年8月20日 · In contrast to primary intramedullary neoplasms, associated cysts are rare and some patterns of enhancement have been described as helpful in suggesting the diagnosis (see rim sign and flame sign below) 20. Typical MRI signal characteristics are: T1: hypointense; T2. hyperintense; prominent edema commonly surrounds the tumor nodule; T1 C+ (Gd):

2024年12月29日 · string sign. string and pearl sign: focal narrowing with a distal site of dilatation. pseudoaneurysm formation: see internal carotid artery pseudoaneurysm. double barrel lumen or intimal flap are rarely seen 2,9. Treatment and prognosis. Conservative medical management is often all that is required.

2025年2月18日 · blade of grass or candle flame sign: begins as a subchondral area of lucency with advancing tip of V-shaped osteolysis, extending towards the diaphysis. in rare cases, the disease is isolated to the diaphysis, most commonly in the tibia, rather than subchondral bone, which can cause diagnostic confusion. shepherd crook deformity

2024年2月24日 · A jet or flame-shaped hemorrhage is a term sometimes used to describe an intraparenchymal hematoma adjacent to a ruptured arterial vascular malformation, such as aneurysms (most common) or dural arteriovenous fistulae or arteriovenous malformations 1,2.

2019年5月19日 · The rim sign is seen on sagittal post contrast T1 weighted imaging of the spinal cord and appears as a thin line of increased enhancement around the margins of the lesion. Superiorly and/or inferiorly it may extend into the cord as …

2024年12月14日 · The signs of bladder trauma are difficult to define as injuries to the bladder usually occur in the setting of multiple injuries. Hematuria , abdominal pain and difficulty passing urine have been described as a triad of symptoms, but bladder trauma is frequently a radiological rather than clinical diagnosis 7 .

2022年12月22日 · Carotid pseudo-occlusion refers to apparent occlusion of the cervical internal carotid artery on CT angiography or digital subtraction angiography due to a stagnant column of unopacified blood proximal to terminal T-junction occlusion by thromboembolism 1,2.. It is important not to mistake this for true occlusion, carotid dissection or a tandem lesion.