Những tiến bộ gần đây và khám phá kỹ thuật tiểu thuyết, Cả hai lợi ích và, thực tế, các hiệu ứng bất lợi, kết hợp để làm cho thời gian này năm sinh dục thú vị cho mục tiêu đầy thách thức (GU) hình ảnh. Tất cả Thể thức GU đã được hưởng lợi từ phát triển công nghệ, mặc dù một số chi tiết hơn những người khác | RADIOLOGIC CLINICS of North America xi RADIOLOGIC CLINICS sevter OF NORTH AMERICA SAUNDERS Radiol Clin N Am 46 2008 xi-xii Preface I Michael A. Blake MRCPI FFR RCSI FRCR Department of Radiology Massachusetts General Hospital 55 Fruit Street Boston MA 02114 USA E-mail address mblake2@ . Blake Mannudeep K. Kalra MD Department of Radiology Massachusetts General Hospital 55 Fruit Street Boston MA 02114 USA E-mail address mkalra@ . Kalra Recent technical advances and novel discoveries both of benefits and indeed of adverse effects combine to make this an exciting but challenging time for genitourinary GU imaging. All GU modalities have benefited from technological developments although some more than others for example the intravenous pyelogram yielding much of its former preeminent role to CT. However all radiation-based modalities must now contend with much more stringent expectations of radiation dose optimization. Technologic advances are helping to meet some of these issues as Drs. Kalra Singh and Blake discuss in their article entitled CT of the Urinary Tract Turning Attention to Radiation Dose. MR imaging faces new challenges too including the recent discovery of the association between certain gadolinium agents in the setting of renal failure and the systemic condition of nephrogenic systemic fibrosis. This challenge is discussed along with the many other important MR considerations and developments in the articles devoted to MR imag ing including the one focusing on Magnetic Resonance Nephrourography Current and Developing Techniques by Drs. Kalb Votaw Salman Sharma and Martin. Nuclear medicine procedures are also constantly in evolution and are finding greater and greater applications in nephrology and urology. Radionuclide imaging of the GU tract has become an invaluable asset to clinicians in the evaluation of renal parenchyma and urologic abnormalities. This role is highlighted by Drs. He and Fischman in their Nuclear Imaging .
