abdomen — Clinical MRI

Automated Fast Liver MR Scan: A Preliminary Evaluation

July 15, 2019 by Chao Ma

Moyamoya disease requires follow-up for a long period of time, and ASL is very well suited for the evaluation of this disease. The multi-PLD PCASL is significant as a screening tool because it provides information on whole-brain perfusion distribution in a 3D rCBF map as well as information on pseudo hemodynamics. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Clinical Updates
Tagged With: HCC, hemangioma, liver, liver metastasis

Fast and efficient liver imaging with Primovist®/Eovist®

July 27, 2018 by Gregor Thörmer, Ph.D.

This liver workflow makes better use of the time between the dynamic and liver-specific phases – by shifting the time consuming acquisition of high-res T2w images and DWI to after the contrast injection and – by shortening the delay between contrast dynamics and the acquisition of hepatobiliary phase images. The protocols allow to perform a complete Primovist liver exam in a 30-minute exam slot. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Clinical Updates, liver
Tagged With: dynamic imaging, liver

MAGNETOM Sola: Adaptive and anticipatory, predictive and profitable

July 27, 2018 by Ulrike Attenberger, MD

Shortening average examination times by 50% – the first experiences with 1.5T MAGNETOM Sola with BioMatrix technology are presented in this article. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Clinical Updates, heart, the joints, whole body
Tagged With: decreasing scan time, shortening examination time

Diffusion and perfusion MR parameters to assess preoperative short course radiotherapy response in locally advanced rectal cancer: a comparative explorative study among parameters derived from standardized index of shape DCE-MRI, intravoxel incoherent motion, and diffusion kurtosis imaging

July 11, 2018 by Roberta Fusco

To assess preoperative Short Course Radiotherapy (SCR) tumor response in locally advanced rectal cancer (LARC) by means of parameters derived from Standardized Index of Shape (SIS) dynamic contrast enhanced (DCE) MRI, Apparent Diffusion Coefficient (ADC), Intravoxel Incoherent Motion and Diffusion Kurtosis Imaging derived parameters by diffusion weighted (DW) MRI. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Clinical Updates
Tagged With: cancer, Rectal

Dynamic contrast-enhanced magnetic resonance imaging, diffusion kurtosis imaging, and intravoxel incoherent motion diffusion weighted imaging: MRI functional parameters in the assessment of pancreatic cancer

July 11, 2018 by Roberta Fusco

To evaluate the diagnostic potential of perfusion parameters derived from dynamic contrast-enhanced MR imaging (DCE-MRI), diffusion kurtosis imaging (DKI), and parameters derived from the intravoxel incoherent motion model (IVIM)-based diffusion weighted imaging (DWI) in differentiating between pancreatic tumors and normal pancreatic parenchyma. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Clinical Updates
Tagged With: cancer, pancreas

Imaging of the Pancreas: Technique and Clinical Applications

December 8, 2017 by Giovanni Morana

The article describes the experiences with REMyDI (Rapid Estimation of Myelin for Diagnostic Imaging), a method of myelin detection in the brain, using a scan time of approximately 6 minutes. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Clinical Updates
Tagged With: pancreas

Evaluation of Transient Motion During Gadoxetic Acid–Enhanced Multiphasic Liver Magnetic Resonance Imaging Using Free-Breathing Golden-Angle Radial Sparse Parallel Magnetic Resonance Imaging

October 24, 2017 by Jeong Hee Yoon, MD

Transient motion developed in 40% of patients shortly after gadoxetic acid administration, and gated free-breathing T1WI using GRASP was able to consistently provide acceptable arterial phase imaging in patients who exhibited transient motion. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Clinical Updates, liver
Tagged With: liver, liver mass, motion

MR-Guided Biopsies of the Prostate in Supine Patient Position

April 28, 2016 by Florian Schneider, M.D.

The article shows that targeted biopsies of the prostate under direct MRI-guidance are a reasonable complement to ultrasound biopsy techniques. The presented cases show that exact targeting of the most suspicious portion of a tumor is crucial for correct classification and consequently best therapy decisions. Especially in case of relatively small lesions, direct MR-guidance has clear advantages over fusion techniques. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Clinical Updates, New Technologies & Advances, pelvis
Tagged With: prostate, T2-weighed

Case Series: Utilization of the Pediatric 16 Coil for 1.5T and 3T Systems

February 3, 2017 by Bac Nguyen, RT

In this article we share some of our experiences over the last few years with MR upgrades. [...]

Filed Under: abdomen, Anatomic Regions, bones, brain, Clinical Imaging, Clinical Updates, heart, Software & Hardware Updates, spine
Tagged With: abdomen, bones, brain, heart, spine

Right renal angiomyolipoma

August 8, 2014 by Tao Ai MD, PhD

Clinical History: 59-year old woman with right lower back pain for more than one year Diagnosis: Right renal angiomyolipoma MR Technique: Upper abdominal imaging was performed on a 3T MR system. (A, B) Axial T1-weighted VIBE in- and out-of-phase (TR/TE 3.88/1.27ms), and (C) axial FS T2-weighted TSE (TR/TE 5814/78ms, with respiratory triggering) scans […] [...]

Filed Under: abdomen, Anatomic Regions, Cases, Clinical Imaging, kidneys, Meet The Experts, Xiaoming Li
Tagged With: 3T, abdomen, DCE MRI, kidney, tumor

MAGNETOM Aera – Combining Throughput and Highest Quality MRI in an Optimized Clinical Workflow

March 6, 2014 by MRI

This paper shows how the simultaneous use of multipurpose loop coils in MRI allows high-resolution musculoskeletal studies with increased contrast and specificity for assessing muscles, tendons, ligaments, joints, and cartilage. Dr. Ferrer presents a number of different daily patient routine examinations, including specifically evaluation of the carpal bones, the thumb metacarpals, the metacarpals, the distal inter-phalangeal joints, the elbow and ankle. [...]

Filed Under: abdomen, Anatomic Regions, brain, Clinical Imaging, Clinical Methods & Techniques, the joints
Tagged With: abdomen, brain, musculoskeletal system

Hepatic Hemangioma

July 6, 2013 by Dr Hakimelahi, MD

A 55 year old woman with an incidental finding on an MRI of the thoracic spine. [...]

Filed Under: abdomen, Cases, Clinical Imaging, liver, Meet The Experts, Val M. Runge
Tagged With: Benign Hepatic Mass, liver, liver mass

Hepatocellular Carcinoma-2

July 6, 2013 by Miguel Trelles, MD

This 54 year old woman presented to the gastroenterology clinic complaining of abdominal pain. A right upper quadrant ultrasound was performed demonstrating an ill-defined hypoechoic hepatic mass. MRI was recommended for further evaluation. [...]

Filed Under: abdomen, Cases, Clinical Imaging, liver, Meet The Experts, Val M. Runge
Tagged With: liver, liver mass, malignant hepatic tumor

Subcapsular/extracapsular hematoma

July 6, 2013 by J. Ryan Mikus, MD, MS

This is a 54-year-old Caucasian male with a past medical history of polymyositis and recent outside hospital admission for biliary tree obstruction with subsequent ERCP, cholecystectomy, and liver biopsy. He was admitted to our institution with elevated LFTs and abdominal pain. [...]

Filed Under: abdomen, Cases, Clinical Imaging, liver, Meet The Experts, Val M. Runge
Tagged With: liver

Multiple Arterial Stenoses

July 6, 2013 by Ulrike Attenberger, MD

This 63-year-old man presented with a longstanding history of peripheral arterial occlusive disease, hypertension, diabetes, coronary artery disease, prior myocardial infarction, crossover bypass, and renal artery stenosis with increasing leg pain. [...]

Filed Under: abdomen, Anatomic Regions, arteries in the abdomen/pelvis, arteries in the legs, Cases, Clinical Imaging, Meet The Experts, pelvis, Stefan Schönberg
Tagged With: Contrast enhanced MRA, dynamic contrast enhanced MRI, MRA, Peripheral MRA

Two liver lesions – hemangioma and focal nodular hyperplasia

July 6, 2013 by Raghuram K. Rao, MD, MPH

This is a 38 year old female who had a CT performed for nonrelated reasons, but had incidentally detected liver masses. An MRI was ordered for further workup. [...]

Filed Under: abdomen, Cases, Clinical Imaging, liver, Meet The Experts, Val M. Runge
Tagged With: Benign Hepatic Mass, liver, liver mass

Fat Suppression in the Abdomen

July 6, 2013 by MRI

Due to the different chemical environment, hydrogen nuclei in water- and in fat-tissue have different values for some MRI-relevant parameters, mainly being the relaxation time and the resonance frequency (chemical shift). These differences can be used to selectively suppress/reduce the signal of fat bound protons.Thus relaxation-dependant and chemical shift-dependant methods can be used for fat suppression. [...]

Filed Under: abdomen, Clinical Imaging, Clinical Methods & Techniques, Software & Hardware Updates
Tagged With: fat suppression, upper abdomen

Spectral Adiabatic Inversion Recovery (SPAIR) MR imaging of the Abdomen

July 6, 2013 by Thomas C. Lauenstein

SPAIR (Spectral Adiabatic Inversion Recovery) is a powerful technique for fat suppression which offers advantages over conventional fat suppression techniques. The technique is insensitive to B1 inhomogenities and only fat spins are suppressed/inverted. [...]

Filed Under: abdomen, Anatomic Regions, Clinical Imaging, Software & Hardware Updates
Tagged With: fat suppression, liver, upper abdomen

Revisiting Liver Imaging with VIBE

July 5, 2013 by Vamsi Narra, MD

Volume Interpolated Breath-hold Examination (VIBE) offers three-dimensional multiphase image acquisition before and following contrast administration on a breath-hold time scale. The dynamic behavior of liver lesions and structures during the precontrast, arterial, portal venous, early equilibrium and 5-minute delayed equilibrium phases of enhancement allows more accurate characterization than static pre- and postcontrast analysis. [...]

Filed Under: abdomen, Anatomic Regions, Clinical Imaging, liver, Software & Hardware Updates
Tagged With: breathhold, dynamic contrast enhanced MRI, fat suppression, liver, upper abdomen, VIBE

Detection and Characterization of Focal Liver Lesions using Respiratory-Triggered Diffusion- Weighted MR Imaging (DWI)

July 5, 2013 by Konstantin Holzapfel

Due to a number of technical challenges, the use of DWI was initially confined to the brain with its low incidence of movement artifacts and the high homogeneity and signal-to-noise ratio (SNR) of brain tissue. Physiological motion artifacts (e.g. motility of the bowel, cardiac pulsation, respiratory motions) and the heterogeneous composition of many extracranial organs had precluded the application of DWI in body imaging until a series of technologic advances such as the development of echo-planar imaging (EPI), high-gradient amplitudes, multichannel coils and parallel imaging techniques enabled the acquisition of high quality diffusion-weighted images of the body. [...]

Filed Under: abdomen, Anatomic Regions, Clinical Imaging, Software & Hardware Updates, whole body
Tagged With: diffusion, whole body MR

Large FOV Imaging at 3T with a 32-Channel Body Array Coil

July 5, 2013 by Yutaka Natsuaki, Ph.D.

This article shows the benefits of a 32-channel body coil for large field-of-view imaging in the abdomen and pelvis, including MR Angiography. The evolution of parallel imaging techniques has been very rapid, with realization of their full potential requiring development and utilization of MR systems with up to 32 receiver channels. [...]

Filed Under: abdomen, Clinical Imaging, pelvis, Software & Hardware Updates
Tagged With: Contrast enhanced MRA, DIXON, FLASH, liver, multichannel coil