Zobrazeno 1 - 10
of 90
pro vyhledávání: '"S LeFrak"'
Autor:
Stephen S. Lefrak, Peter T. Macklem, James C. Hogg, Joel D. Cooper, Jason C. Woods, Dmitriy A. Yablonskiy, John A. Pierce, Cliff Khuat Chye Choong, Kimiaki Chino, Mark S. Conradi
Publikováno v:
Thorax. 62:623-630
Background: The hypothesis that ventilation of emphysematous lungs would be enhanced by communication with the parenchyma through holes in the pleural surface was tested. Methods: Fresh human lungs were obtained from patients with emphysema undergoin
Autor:
Yulin V. Chang, Richard E. Jacob, Dmitriy A. Yablonskiy, Jason C. Woods, Joel D. Cooper, A. L. Sukstanskii, Stephen S. Lefrak, Tariq Tanoli, Cliff Khuat Chye Choong, David S. Gierada, Mark S. Conradi
Publikováno v:
Academic Radiology. 12:1406-1413
The development of laser-polarized helium-3 (3He) technology (1,2) now allows for imaging of the gas spaces of human and animal lungs (3,4). Typical absolute polarizations of 30%–50% are approximately 100,000 times that available at thermal equilib
Autor:
G. Alexander Patterson, Stephen S. Lefrak, Bryan F. Meyers, David S. Gierada, Joel D. Cooper, Gail E. Davis, Roger D. Yusen
Publikováno v:
Chest. 123:1026-1037
Objectives: Though numerous studies have demonstrated the short-term efficacy of lung volume reduction surgery (LVRS) in select patients with emphysema, the longer-term follow-up studies are just being reported. The primary objectives of this study w
Autor:
Richard M. Slone, Thomas K. Pilgram, Kyongtae T. Bae, Stephen S. Lefrak, Roger D. Yusen, David S. Gierada, Lora Crouch, Joel D. Cooper
Publikováno v:
Radiology. 220:448-454
To evaluate the repeatability of quantitative computed tomographic (CT) indexes of emphysema and the effect of spirometric gating of lung volume during CT in candidates for lung volume reduction surgery (LVRS).Initial and same-day repeat routine insp
Publikováno v:
European Respiratory Journal. 36:706-708
Eponyms are a time-honoured tradition in medicine as well as the sciences. Some fields of medicine, such as rheumatology and neurology, are particularly fond of them and the term “eponymophilia” has been coined to describe their affinity 1. Those
Autor:
Roger D. Yusen, Joel D. Cooper, Thomas K. Pilgram, David S. Gierada, Stephen S. Lefrak, Ian A. Villanueva, Richard M. Slone
Publikováno v:
Chest. 117:991-998
Objectives: We used whole-lung quantitative CT analysis (QCT)—an objective method of evaluating emphysema severity and distribution based on measurement of lung density—to determine whether subjective selection criteria for lung volume reduction
Autor:
Dmitriy A. Yablonskiy, Jason C. Leawoods, Mark S. Conradi, Vikram D. Kodibagkar, David S. Gierada, Joel D. Cooper, Brian Saam, Stephen S. Lefrak
Publikováno v:
Magnetic Resonance in Medicine. 44:174-179
Hyperpolarized (3)He gas MRI was used to form maps of the effective diffusivity of gas in human lungs. Images of diffusion as well as spin density are presented from a study of 11 healthy volunteers and 5 patients with severe emphysema. The effective
Autor:
Brian Saam, Stephen S. Lefrak, Joel D. Cooper, Dmitriy A. Yablonskiy, David S. Gierada, Mark S. Conradi
Publikováno v:
NMR in Biomedicine. 13:176-181
We applied the rapid imaging capability of echo planar MR pulse sequences and hyperpolarized 3 He ventilation imaging to observe the dynamic distribution of gas in the lungs during breathing. Findings in five normal volunteers (age 19-53 years) and f
Autor:
Kyongtae T. Bae, Richard M. Slone, Stephen S. Lefrak, Roger D. Yusen, Joel D. Cooper, D S Gierada
Publikováno v:
Radiology. 205:235-242
To compare quantitative computed tomographic (CT) and preoperative physiologic values in emphysema with outcome after lung-volume reduction surgery.In 46 patients, emphysema was quantified by measuring lung attenuation on preoperative CT scans. Quant
Autor:
Mary S. Pohl, G. Alexander Patterson, R.Sudhir Sundaresan, Joel D. Cooper, Roger D. Yusen, Stephen S. Lefrak, Elbert P. Trulock
Publikováno v:
The Journal of Thoracic and Cardiovascular Surgery. 112(5):1319-1330
Between January 1993 and February 1996, we performed 150 bilateral lung volume reduction procedures for patients with severe emphysema. Patients were selected on the basis of severe dyspnea, increased lung capacity, and a pattern of emphysema that in