Second Epoch VLBA Calibrator Survey Observations - VCS-II.

Six very successful VLBA calibrator survey campaigns were run between 1994 and 2007 to build up a large list of compact radio sources with positions precise enough for use as VLBI phase reference calibrators. We report on the results of a second epoch VLBA Calibrator Survey campaign (VCS-II) in which 2400 VCS sources were re-observed at X and S bands in order to improve the upcoming third realization of the International Celestial Reference Frame (ICRF3) as well as to improve their usefulness as VLBI phase reference calibrators. In this survey, some 2062 previously detected sources and 324 previously undetected sources were detected and revised positions are presented.

The value of computed tomography scans in the diagnosis and management following invasive arterial investigation.

We report a patient who was known to have an abdominal aortic aneurysm and was being assessed for endovascular repair by calibrated angiogram, who developed back pain and cardiovascular collapse, where a computed tomography scan proved essential in establishing the correct diagnosis - bleed from an accessory renal artery branch.

Thrombin injection to treat a scalp pseudoaneurysm.

We describe the successful treatment of a large scalp pseudoaneurysm using direct thrombin injection.

Delayed recanalization angioplasty after traumatic occlusion of the superficial femoral and popliteal artery.

The management of patients presenting with limb-threatening ischemia after lower limb trauma poses particular demands on vascular surgeons. We describe two patients with lower limb arterial occlusions who presented with limb-threatening ischemia 8 years and 3 years after trauma to the lower limb. They were successfully managed by recanalization angioplasty, with a good early clinical outcome after 5 months and 3 months, respectively.