David H. Ring

Learn More
PURPOSE To review the arteriographic appearance of popliteal artery entrapment syndrome (PAES) and functional popliteal artery entrapment, and determine the role of thrombolysis in the treatment of these disorders. MATERIALS AND METHODS Retrospective review of hospital records from 1991 to 1998. RESULTS Seven patients with PAES and one with functional(More)
Herein the authors present a case of a 51-year-old man who presented with dramatic angiographically demonstrated massive hemorrhage from a pulmonary artery-to-bronchial stump fistula 3 months after right upper lobectomy. The patient was successfully treated with endovascular placement of a covered stent.
A 45-year-old man with chronic lymphocytic leukemia and a retroperitoneal mass underwent Tc-99m labeled red blood cell bleeding imaging to localize a bleeding source. The bleeding scan showed a linear accumulation of radiotracer obliquely oriented along the left upper epigastrium to the right midepigastrium. This area of uptake increased in intensity and(More)
Incoherent light, transmitted via multimode fibers, represents a potential carrier for information that is directly modulated on the light envelope. The amplitude and phase characteristics of the envelope (baseband) signal are affected by the fiber waveguide because of group delay differences among the modes. We report on a technique that determines the(More)
A 56-year-old woman underwent abdominoplasty with no immediate complications. She had no known bleeding history nor any relevant past surgical history. Adequate preventive measures for venous thromboembolism were performed, including sequential compression devices, good hydration, and early ambulation. At 17 days post operation, the patient presented to the(More)
  • 1