Background While aneurysm neck length, angulation and width have all been previously assessed in endovascular abdominal aortic aneurysm repair (EVAR), aneurysm neck shape has not been considered. Aims To analyse the influence of aneurysm neck morphology on outcome following EVAR. Methods Aneurysm neck morphology in 70 patients undergoing EVAR from April 2001 to May 2004 was determined using pre...

This study explored the radiographic and anatomical differences in normal shoulders between men and women, as well as factors such as race, height, weight, and age. A total of 205 patients with documented normal anatomical radiographs comprised the study population. Five fellowship-trained orthopedic surgeon reviewers measured head diameter, humeral head size, head to tuberosity distance, great...

BACKGROUND A prototype anthropomorphic head and neck phantom has been designed to simulate the adult head and neck anatomy including some internal organs and tissues of interest, such as thyroid gland and sentinel lymph nodes (SLNs). The design of the head and neck phantom includes an inner jig holding the simulated SLNs and thyroid gland. The thyroid gland structure was manufactured using thre...

PURPOSE To quantify dynamic changes in aortoiliac dimensions using dynamic electrocardiographically (ECG)-gated computed tomographic angiography (CTA) and to investigate any potential impact on preoperative endograft sizing in relation to observer variability. METHODS Dynamic ECG-gated CTA was performed in 18 patients with abdominal aortic aneurysms. Postprocessing resulted in 11 datasets per...

We describe a 74-year-old male who underwent open stent repair for an infrarenal abdominal aortic aneurysm with a severely calcified aortic neck. The stent graft was constructed by covering a 50-mm long Gianturco Z stent (diameter: 20 mm) with a Dacron prosthesis (diameter: 20 mm). The stented Dacron graft was inserted into the calcified aortic neck, was then sutured to the trimmed aneurysmal w...

OBJECTIVE In endovascular aortic aneurysm repair (EVAR), proximal type 1A endoleaks can occur as a result of hostile neck anatomy or over- or undersizing of the endograft. As the current standard is based on the diameter or average of the short and long axes in a central lumen reconstruction image, it can falter in irregularly shaped aortic necks. An alternative method is circumference-based, t...

BACKGROUND AND PURPOSE Reproducible animal models with appropriate neck size are crucial for preclinical assessment of aneurysm therapies. Our purpose was to determine whether the neck size of elastase-induced aneurysms could be controlled by adjusting the position of the temporary occlusion balloon. METHODS Seventy-two elastase-induced aneurysms in rabbits were retrospectively analyzed. Thre...

BACKGROUND Angiographic assessment is an alternative to computerised tomography (CT) prior to endovascular aneurysm repair (EVAR). We evaluated angiography in aortic neck morphology assessment as an alternative investigation. METHODS Patients admitted for elective or emergency EVAR were assessed by pre-operative CT and intra-operative angiography. The proximal and distal aortic neck diameters...

BACKGROUND The extent of the adjuvant neck dissection after radiotherapy with or without chemotherapy remains undefined. We investigated whether we could limit neck dissection to levels with positive lymph nodes on CT scan before treatment. METHODS Twenty-one patients' initial diagnostic CT scans were reviewed retrospectively and neck levels were scored positive for malignancy if the respecti...

The droplet separation from a liquid jet was investigated experimentally. Details of the shape of the thin liquid neck joining the droplet to its parent body were studied in terms of the fluid viscosity and the jet diameter. As the viscosity increased, the neck rapidly elongated creating a long thread. Its final diameter before rupture was approximately one micrometer and seems to be constant w...