Journal of Magnetic Resonance Imaging
SCIE-ISI SCOPUS (1991-2025)
1522-2586
1053-1807
Mỹ
Cơ quản chủ quản: WILEY , John Wiley & Sons Inc.
Lĩnh vực:
Radiology, Nuclear Medicine and Imaging
Phân tích ảnh hưởng
Các bài báo tiêu biểu
Diffusion tensor imaging: Concepts and applications
Tập 13 Số 4 - Trang 534-546 - 2001
AbstractThe success of diffusion magnetic resonance imaging (MRI) is deeply
rooted in the powerful concept that during their random, diffusion‐driven
displacements molecules probe tissue structure at a microscopic scale well
beyond the usual image resolution. As diffusion is truly a three‐dimensional
process, molecular mobility in tissues may be anisotropic, as in brain white
matter. With diffusio...
4D flow MRI
Tập 36 Số 5 - Trang 1015-1036 - 2012
AbstractTraditionally, magnetic resonance imaging (MRI) of flow using phase
contrast (PC) methods is accomplished using methods that resolve
single‐directional flow in two spatial dimensions (2D) of an individual slice.
More recently, three‐dimensional (3D) spatial encoding combined with
three‐directional velocity‐encoded phase contrast MRI (here termed 4D flow MRI)
has drawn increased attention. ...
Một khuôn khổ cho chỉ số xác suất kết nối dựa trên dòng chảy (PICo) thông qua việc giải thích cấu trúc của các phép đo khuếch tán MRI Dịch bởi AI
Tập 18 Số 2 - Trang 242-254 - 2003
Tóm tắtMục đích:Thiết lập một phương pháp tổng quát để định lượng các phương
pháp theo dõi sợi dựa trên dòng chảy về xác suất kết nối giữa các điểm và/hoặc
các vùng.Nguyên liệu và Phương pháp:Phương pháp dòng chảy thường được sử dụng
được điều chỉnh để tận dụng sự không chắc chắn trong định hướng của phương hướng
khuếch tán chính được xác định cho mỗi voxel ảnh. Việc chạy quy trình dòng chảy
lặp l...
Osteoporosis is associated with increased marrow fat content and decreased marrow fat unsaturation: A proton MR spectroscopy study
Tập 22 Số 2 - Trang 279-285 - 2005
AbstractPurposeTo use proton magnetic resonance spectroscopy (1H‐MRS) to
evaluate vertebral marrow fat, and to determine whether bone density correlates
with fat content and fat unsaturation levels in postmenopausal women.Materials
and MethodsFifty‐three women (mean age = 70 years) underwent dual energy x‐ray
absorptiometry and 1H‐MRS, and 12 young female controls (mean age = 28 years)
underwent 1...
Encoding strategies for three‐direction phase‐contrast MR imaging of flow
Tập 1 Số 4 - Trang 405-413 - 1991
AbstractThree encoding strategies for the measurement of flow velocities in
arbitrary directions with phase‐contrast magnetic resonance imaging are
presented; their noise and dynamic range performance are compared by means of
theoretical analysis and computer simulation. A six‐point measurement strategy
is shown to be quite inefficient in terms of velocity variance per unit time. A
simple four‐poi...
Nephrotoxicity of high‐dose gadolinium compared with iodinated contrast
Tập 6 Số 1 - Trang 162-166 - 1996
AbstractTo determine if high‐dose gadolinium chelates are less nephrotoxic than
iodinated contrast. Records of 342 patients who had received high‐dose
gadolinium (.2 to .4 mmol/kg) for magnetic resonance imaging were reviewed to
identify patients who had also received iodinated contrast for radiographic
examinations. Their clinical course and laboratory data were reviewed to
identify changes in se...
Proton MR spectroscopy in quantitative in vivo determination of fat content in human liver steatosis
Tập 5 Số 3 - Trang 281-285 - 1995
AbstractTo demonstrate that the lipid volume fraction In liver steatosis can be
accurately estimated with in vivo hydrogen‐1 magnetic resonance (MR)
spectroscopy, the authors developed a calibration procedure based on in vitro MR
spectroscopy of lipid extracts from steatotlc liver specimens. The lipid volume
fractions determined with the calibration procedure were compared with the
results of hist...
Time‐resolved 3D MR velocity mapping at 3T: Improved navigator‐gated assessment of vascular anatomy and blood flow
Tập 25 Số 4 - Trang 824-831 - 2007
AbstractPurposeTo evaluate an improved image acquisition and data‐processing
strategy for assessing aortic vascular geometry and 3D blood flow at
3T.Materials and MethodsIn a study with five normal volunteers and seven
patients with known aortic pathology, prospectively ECG‐gated cine
three‐dimensional (3D) MR velocity mapping with improved navigator gating,
real‐time adaptive k‐space ordering and...
Semiautomated method for noise reduction and background phase error correction in MR phase velocity data
Tập 3 Số 3 - Trang 521-530 - 1993
AbstractBackground phase distortion and random noise can adversely affect the
quality of magnetic resonance (MR) phase velocity measurements. A semiauto‐mated
method has been developed that substantially reduces both effects. To remove the
background phase distortion, the following steps were taken: The time standard
deviations of the phase velocity images over a cardiac cycle were calculated.
Sta...
Report on a multicenter fMRI quality assurance protocol
Tập 23 Số 6 - Trang 827-839 - 2006
AbstractTemporal stability during an fMRI acquisition is very important because
the blood oxygen level‐dependent (BOLD) effects of interest are only a few
percent in magnitude. Also, studies involving the collection of groups of
subjects over time require stable scanner performance over days, weeks, months,
and even years. We describe a protocol designed by one of the authors that has
been tested ...