Recent technical advances in MR imaging of the abdomen

MRI of the abdomen has been under development for well over a decade. In the past, considerable work was directed toward identification and suppression of the artifacts caused by motion. However, within the last several years, image quality has further improved, particularly as various fastscan techniques have been adapted for abdominal imaging. The purpose of this work is to review these technical developments. Specific methods include adaptation of the acquisition time to breath‐holding, acquisition over multiple respiratory cycles, adjustment of the contrast of various sequences, and development of more sensitive receiver coils and faster gradient systems. Opportunities for future development are also identified, including improved slice sampling, increased in‐plane spatial resolution, real‐time means for monitoring respiration, and expanded applications. As these technical advances are implemented, it is expected that the overall sensitivity and specificity of abdominal MRI will further improve.

[1]  J. Duerk,et al.  Motion artifact suppression technique (MAST) for MR imaging. , 1987, Journal of computer assisted tomography.

[2]  A. Haase,et al.  Snapshot flash mri. applications to t1, t2, and chemical‐shift imaging , 1990, Magnetic resonance in medicine.

[3]  J Hennig,et al.  RARE imaging: A fast imaging method for clinical MR , 1986, Magnetic resonance in medicine.

[4]  B R Rosen,et al.  Selective Saturation NMR Imaging , 1984, Journal of computer assisted tomography.

[5]  M E Brummer,et al.  Acquisition order and motional artifact reduction in spin warp images , 1988, Magnetic resonance in medicine.

[6]  G. Bydder,et al.  Nuclear magnetic resonance imaging of the liver: initial experience. , 1982, AJR. American journal of roentgenology.

[7]  A. Haase,et al.  Chemical shift selective MR imaging using a whole-body magnet. , 1985, Radiology.

[8]  Richard L. Ehman,et al.  A monitoring, feedback, and triggering system for reproducible breath‐hold MR imaging , 1993, Magnetic resonance in medicine.

[9]  J. Pearlman,et al.  Rapid NMR cardiography with a half-echo M-mode method. , 1991, Journal of computer assisted tomography.

[10]  E M Haacke,et al.  Improving MR image quality in the presence of motion by using rephasing gradients. , 1987, AJR. American journal of roentgenology.

[11]  R R Edelman,et al.  Detection of hepatic metastases: analysis of pulse sequence performance in MR imaging. , 1986, Radiology.

[12]  P. Mansfield.  Multi-planar image formation using NMR spin echoes , 1977 .

[13]  F. H. Barneveld Binkhuysen,et al.  Influence of CT on radiologic utilization in The Netherlands. , 1988, Radiology.

[14]  L. Kaufman,et al.  Hepatic tumors: magnetic resonance and CT appearance. , 1984, Radiology.

[15]  S J Riederer,et al.  Compensation for effects of linear motion in MR imaging , 1989, Magnetic resonance in medicine.

[16]  J. Felmlee,et al.  Echo-planar imaging of the liver with a standard MR imaging system. , 1993, Radiology.

[17]  D Chien,et al.  Improved time-of-flight MR angiography of the brain with magnetization transfer contrast. , 1992, Radiology.

[18]  G Johnson,et al.  Multiple breath‐hold averaging (mba) method for increased snr in abdominal mri , 1995, Magnetic resonance in medicine.

[19]  S. Riederer,et al.  Multiple breathhold 3D time‐of‐flight MR angiography of the renal arteries , 1996, Magnetic resonance in medicine.

[20]  S. Riederer,et al.  Analysis of T2 limitations and off‐resonance effects on spatial resolution and artifacts in echo‐planar imaging , 1990, Magnetic resonance in medicine.

[21]  J C Gore,et al.  Factors influencing contrast in fast spin-echo MR imaging. , 1992, Magnetic resonance imaging.

[22]  S Choi,et al.  Biliary obstruction: evaluation with three-dimensional MR cholangiography. , 1992, Radiology.

[23]  E. D. de Lange,et al.  MR imaging of the liver: breath-hold T1-weighted MP-GRE compared with conventional T2-weighted SE imaging--lesion detection, localization, and characterization. , 1994, Radiology.

[24]  M. L. Wood,et al.  MR image artifacts from periodic motion. , 1985, Medical physics.

[25]  W Weidenmaier,et al.  Dilated biliary tract: evaluation with MR cholangiography with a T2-weighted contrast-enhanced fast sequence. , 1991, Radiology.

[26]  R. Edelman,et al.  Magnetic resonance imaging of cavernous hemangioma of the liver: tissue-specific characterization. , 1985, AJR. American journal of roentgenology.

[27]  D. Hough,et al.  Comparison of breath-hold fast spin-echo and conventional spin-echo pulse sequences for T2-weighted MR imaging of liver lesions. , 1995, Radiology.

[28]  Y Wang,et al.  3D coronary MR angiography in multiple breath‐holds using a respiratory feedback monitor , 1995, Magnetic resonance in medicine.

[29]  H. Hricak,et al.  Magnetic resonance imaging with respiratory gating: techniques and advantages. , 1984, AJR. American journal of roentgenology.

[30]  R C Grimm,et al.  Respiratory kinematics of the upper abdominal organs: A quantitative study , 1992, Magnetic resonance in medicine.

[31]  M Paley,et al.  MR cholangiography: clinical evaluation in 40 cases. , 1993, Radiology.

[32]  R C Grimm,et al.  T2-weighted spin-echo pulse sequence with variable repetition and echo times for reduction of MR image acquisition time. , 1991, Radiology.

[33]  Kim Butts,et al.  The Effect of Respiration on the Contrast and Sharpness of Liver Lesions in MRI , 1995, Magnetic resonance in medicine.

[34]  Todd S. Sachs,et al.  Real‐time motion detection in spiral MRI using navigators , 1994, Magnetic resonance in medicine.

[35]  G M Bydder,et al.  MR Imaging of the Liver Using Short TI Inversion Recovery Sequences , 1985, Journal of computer assisted tomography.

[36]  R L Ehman,et al.  MR imaging of the abdomen with a phased-array multicoil: prospective clinical evaluation. , 1995, Radiology.

[37]  J. Mugler,et al.  Three‐dimensional magnetization‐prepared rapid gradient‐echo imaging (3D MP RAGE) , 1990, Magnetic resonance in medicine.

[38]  D Matthaei,et al.  1H NMR chemical shift selective (CHESS) imaging. , 1985, Physics in medicine and biology.

[39]  J. Doppman,et al.  Short-Ti inversion-recovery pulse sequence: analysis and initial experience in cancer imaging. , 1988, Radiology.

[40]  J. Felmlee,et al.  Adaptive technique for high-definition MR imaging of moving structures. , 1989, Radiology.

[41]  J Hennig,et al.  Breath‐Hold Projection Magnetic Resonance‐Cholangio‐Pancreaticography (MRCP): a New Method for the Examination of the Bile and Pancreatic Ducts , 1995, Magnetic resonance in medicine.

[42]  B. Worthington,et al.  Nuclear Magnetic Resonance (NMR) Tomography of the Normal Abdomen , 1981, Journal of computer assisted tomography.

[43]  F A Jolesz,et al.  Contrast manipulation and artifact assessment of 2D and 3D RARE sequences. , 1990, Magnetic resonance imaging.

[44]  R L Ehman,et al.  T1-weighted snapshot gradient-echo MR imaging of the abdomen. , 1991, Radiology.

[45]  A. G. Collins,et al.  Respiratory ordered phase encoding (ROPE): a method for reducing respiratory motion artefacts in MR imaging. , 1985, Journal of computer assisted tomography.

[46]  Y. Takehara,et al.  Breath-hold MR cholangiopancreatography with a long-echo-train fast spin-echo sequence and a surface coil in chronic pancreatitis. , 1994, Radiology.

[47]  A. Haase,et al.  Rapid NMR Imaging Using Low Flip-Angle Pulses , 2004 .

[48]  D. DeLong,et al.  Optimizing fast spin echo acquisitions for hepatic imaging in normal subjects , 1996, Journal of magnetic resonance imaging : JMRI.

[49]  P B Roemer,et al.  Volume imaging with MR phased arrays , 1991, Magnetic resonance in medicine.

[50]  P. Roemer,et al.  The NMR phased array , 1990, Magnetic resonance in medicine.

[51]  S. Riederer,et al.  Navigator-echo-based real-time respiratory gating and triggering for reduction of respiration effects in three-dimensional coronary MR angiography. , 1996, Radiology.

[52]  D A Feinberg,et al.  GRASE (gradient- and spin-echo) MR imaging: a new fast clinical imaging technique. , 1991, Radiology.