Dual energy CT angiography: pros and cons of dual-energy metal artifact reduction algorithm in patients after endovascular aortic repair

Abstract

DECT with MAR reduced artifacts from coils and improved endoleak visualization in 1/10 (10%) cases due to location adjacent to a coil. However, MAR impaired endoleak visualization in 6/10 (60%) cases and should be reviewed combined with 60 keV standard reconstructions and iodine MD images.

Utility of Lung Ultrasonography for Detection of Pleural Adhesions in Dogs

“…There was a specific reason why the lung‐sliding scores were classified by the percentage of the area that moved rather than by the distance of movement. Indeed, there was a report that measured the distance of lung‐sliding movement in chest US examinations of pleural adhesions in humans . However, unlike humans, dogs vary greatly in size depending on the breed, from small dogs such as chihuahuas to large dogs such as great Danes.…”

“…Indeed, there was a report that measured the distance of lung-sliding movement in chest US examinations of pleural adhesions in humans. 17 However, unlike humans, dogs vary greatly in size depending on the breed, from small dogs such as chihuahuas to large dogs such as great Danes.…”

“…Reports have shown that human patients, as well as some dogs, with a history of interventional vascular embolization (coils) are at higher risk of an inaccurate diagnosis as a result of metal artifacts. 17 Computed tomography has also been reported to cause pacemaker malfunction in humans, 18 and this complication may occur in veterinary medicine. Second, CT scanners are unfamiliar to primary veterinary care facilities, and facilities that can own such equipment are limited.…”

Dual-Energy Computed Tomography Can Replace the Standard Triphasic Protocol in Follow-Up Imaging of Endovascular Aneurysm Repair: A Review

“…Due to a frequency of complications after EVAR, patients need a lifelong follow-up imaging which is undertaken every 1-3 months after the procedure and every 6-12 months if the aneurysm is stable or decreases in size [24]. As a result, to decrease the radiation dose to patients having surveillance scans, the number of acquisitions can be reduced [14].…”

“…No studies evaluated the value of metal artifact reduction (MAR) post-processing using DECT in patients after EVAR. Boos and colleagues [24] reported that the use of MAR impaired endoleak visualization in 60% of cases. However, when coils were present, DECT with metal artefact reduction techniques, reduced artifacts and improved endoleak detection in 10% of cases.…”