Those of us involved in the development of magnetic resonance angiography (MRA) in
the late 1980’s could hardly envision the routine application of MRA in every MR facility
everyday. In those years there was spectacular development of many new MR clinical
applications.Many pioneering researchers investigated various strategies exploiting the
effects of blood flow on the MR signal to optimize clinical MRA. Remarkable successes
were demonstrated in rapid succession.
The art of imaging blood vessels in the human body is called angiography.
Since its inception, physicians have benefited from the field of angiography
imaging. This has helped them to diagnostically treat patients with various
kinds of vascular diseases. Recently, because of the technology growth in fields
of acquisition techniques, such as magnetic resonance, computer tomography,
digital subtraction angiography, and ultrasound, the vascular imaging
research community has become very interested. But acquisition is just one
side of the coin.
Magnetic resonance (MR) imaging has become the leading cross-sectional imaging method
in clinical practice. Since the 1980s, continuous improvements in hardware and software
have significantly broadened the scope of applications. At present, MR imaging is
not only the most important technique in neuroradiology and musculoskeletal radiology,
but has also become an invaluable diagnostic tool for abdominal, pelvic, cardiac, breast
and vascular imaging.
Computed tomography (CT) is the mainstay of
cancer imaging outside of the central nervous
system. Advances in multidetector CT (MDCT)
technology have had a profound impact on its diagnostic
capabilities. Such techniques as multiphase, single breath-hold
imaging, CT angiography (CTA), volume rendering and
virtual colonography owe their success to the development of
multidetector arrays with continuously moving gantries.
This book, like its conventional counterpart Normal Findings in Radiography,
deals with the apparently banal subject of the normal. It
addresses the question of how to recognize what is normal and how to
describe normal findings. These questions are as important in computed
tomography and magnetic resonance imaging as in other modalities.
Even “sectional imaging” is based on the classical approach of reading
images and formulating findingPetrous pyramids
The most crucial information
about the pathways of control theoretical approach is to be encroached about the
infectious diseases that are the menace in the world. As the pride editor of this
introspecting research compendium, I am privileged to account some modern and
interesting research topics in the prized volume of the book. I hope that this literature
serves as a lee forward in understanding the basic host-pathogen interaction in a more
coherent and scientific fashion and its modus operandi in relation to the various biotic
and abiotic modules.
Từ tháng 6/2006, FDA đã thông báo về một lọai bệnh mới xuất hiện, gọi là Xơ hóa toàn thân do Thận/ bệnh Da xơ hóa do thận (Nephrogenic Systemic Fibrosis / Nephrogenic Fibrosing Dermopathy (NSF/NFD). Bệnh xuất hiện sau khi bệnh nhân được dùng thuốc cản quang để chụp hình cộng hưởng từ (magnetic resonance imaging scan (MRI) hoặc chụp mạch máu cộng hưởng từ (magnetic resonance angiography (MRA).