Elaine Y. L. Goh

National Heart Centre Singapore

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Victor Chao

National Heart Centre Singapore

Shirley C. K. Ng

National Heart Centre Singapore

Marsha M. Neumyer

American Institute of Ultrasound in Medicine

Uzi Naveh

Carmel Medical Center

Jenifer Kidd

Gosford Hospital

Zee Pin Ding

Nanjing University of Chinese Medicine

Megan Hodge

Houston Methodist

Sigalit Rapoport

Hadassah Medical Center

Cooperative Institutions

National Heart Centre Singapore

Duke-NUS Medical School

National University of Singapore

Carmel Medical Center

Singapore General Hospital

Changi General Hospital

E Ink (South Korea)

University of Melbourne

St Vincent's Hospital

Tan Tock Seng Hospital

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Sonographic Evaluation of Aortic Endografts

Journal of diagnostic medical sonography (2011)

Marsha M. Neumyer Jenifer Kidd Megan Hodge Uzi Naveh Sigalit Rapoport

The selective use of endovascular devices to repair abdominal aortic aneurysms was introduced in the early 1990s. Although placement of an aortic endograft offers patients a less morbid alternative to surgical repair, this procedure is not without complications. Persistent perfusion of the residual aneurysmal sac via endoleaks may place the patient at risk for aneurysmal enlargement and subsequent rupture. Historically, serial computed tomographic angiography has been used as the primary modality for assessment of aortic endografts. In recent years, sonography has been shown to provide a valued tool for ongoing surveillance of aortic endografts and identification of endoleaks, increasing aneurysmal size, hemodynamic disorders, and graft migration and/or kinking. Standardization of the sonographic evaluation yields accurate information vital to the long-term patency of these conduits.

Computed tomographic angiography

Aortic repair

10.1177/8756479311401404

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Incidental Finding of Asymptomatic Aortic Dissection

Journal for Vascular Ultrasound (2010)

Elaine Y. L. Goh Shirley C. K. Ng Victor Chao Zee Pin Ding

Introduction Aortic dissection limited to the abdominal aorta is not common. This case report describes the role of duplex ultrasound in the diagnosis of asymptomatic dissection of the abdominal aorta. Case Report A 59-year-old man with hypertension and mild renal impairment was referred to the vascular laboratory for color ultrasound examination of the renal arteries to rule out renal arterial stenosis. The ultrasound examination revealed a nonsignificant (<60%) stenosis in the right renal artery and two thickened but patent left renal arteries; however, there was an incidental finding of dissection of the abdominal aorta arising from the level of the celiac trunk down into the iliac arteries. Magnetic resonance imaging of the thoracic and abdominal aorta was requested; contrast was not used in view of the patient's deteriorating renal function. The finding revealed no features to indicate dissection in the thoracic or abdominal aorta. In view of the discrepancy in findings, computed tomography aortogram was performed. Dissection of the abdominal aorta just distal to the origins of the renal arteries was seen. This case study details the high sensitivity of color ultrasound imaging in identifying abdominal aorta dissection. Conclusion Color duplex ultrasound may be operator dependent but it is a highly sensitive and cost effective modality for identifying abdominal aortic dissection.

Abdominal aorta

Right Renal Artery

Thoracic aorta

10.1177/154431671003400303

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