MRI Research Today is a free monthly online journal that collates and summarizes the latest research about MRI, including details on magnetic resonance imaging, neuroimaging, brain tumors.

A rare case of left ventricular intramural hemangioma diagnosed using 1.5-T cardiac MRI with histopathological correlation and successfully treated by surgery.

Marrone G, Sciacca S, D'Ancona G, Pilato M, Luca A, Gridelli B

Diagnostic and Interventional Radiology, Mediterranean Institute of Transplantation and High Specialization Therapy (ISMETT), Via Tricomi 1, 90127, Palermo, Italy, gmarrone@ismett.edu.

Hemangiomas are vascular tumors composed of blood vessels, frequently localized in the skin and subcutaneous muscles; their localization in the heart is exceptional. The most common localizations are the lateral walls of the left ventricle, the anterior wall, and the septum. Mostly, these tumors grow intracavitarily, rarely intramurally. We describe a singular case of left ventricular intramural hemangioma, detected and diagnosed using newer magnetic resonance imaging (MRI) modalities, confirmed by histopathological results, and treated successfully by surgery.

Published 5 February 2010 in Cardiovasc Intervent Radiol, 33(1): 164-8.
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Articles on MRI published 5 February 2010:

The Use of MRI Diagnostics in Orthognathic Surgery : Prevalence of TMJ Pathologies in Angle Class I, II, III Patients.   J Orofac Orthop, 71(1): 68-80.

AIM: : Occasionally, undesirable post-surgical symptoms of temporomandibular disorder (TMD) and pain have been observed. The aim of this paper is to show how often and to which degree TMJ pathologies occur in orthognathic surgery candidates before surgery, making it recommendable to consider these TMJ pathologies during treatment planning. PATIENTS AND METHODS: : Between 2002 and 2004, Magnetic Resonance Imaging (MRI) of the TMJ were made in 58 randomly chosen orthognathic surgery patients. 69% ... [Abstract] [Full-text]

Pediatric Burkitt lymphoma presenting as acute pancreatitis: MRI characteristics.   Pediatr Radiol.

Acute pancreatitis is a rare initial presentation of non-Hodgkin lymphoma with few reported cases described in older adults and even fewer in children. MRI features of Burkitt lymphoma of the pancreas are sparse in the radiologic literature. We present a 6-year-old boy who presented with pancreatitis and obstructive jaundice, which was the result of Burkitt lymphoma of the pancreas. The imaging findings of pancreatic involvement of Burkitt lymphoma on MRI are discussed and the contributory role ... [Abstract] [Full-text]

Muscle MRI in Myotonic Dystrophy Type 1 with Foot Drop.   Eur Neurol, 63(3): 144-148.

The purpose of this study was to investigate the relationship of muscle MRI findings and gait disturbance in myotonic dystrophy type 1 (DM1) patients. Thirteen patients with DM1 were evaluated by manual muscle strength test and muscle MRI of the lower limb. All DM1 patients presenting with foot drop showed high intensity signals in the tibialis anterior muscles on T1-weighted imaging (p < 0.001). The patients presenting with gait disturbance showed high intensity signals in the ... [Abstract] [Full-text]

Layer-specific variation of iron content in cerebral cortex as a source of MRI contrast.   Proc Natl Acad Sci U S A.

Recent advances in high-field MRI have dramatically improved the visualization of human brain anatomy in vivo. Most notably, in cortical gray matter, strong contrast variations have been observed that appear to reflect the local laminar architecture. This contrast has been attributed to subtle variations in the magnetic properties of brain tissue, possibly reflecting varying iron and myelin content. To establish the origin of this contrast, MRI data from postmortem brain samples were compared ... [Abstract] [Full-text]

Left Atrial Strain and Strain Rate in Patients with Paroxysmal and Persistent Atrial Fibrillation: Relationship to Left Atrial Structural Remodeling Detected by Delayed Enhancement-MRI.   Circ Cardiovasc Imaging.

BACKGROUND: -Atrial fibrillation (AF) is a progressive condition that begins with hemodynamic and/or structural changes in the left atrium (LA) and evolves through paroxysmal and persistent stages. Because of limitations with current noninvasive imaging techniques, relationship between LA structure and function is not well understood. METHODS AND RESULTS: -Sixty-five patients (61.2 +/- 14.2 years, 67% males) with paroxysmal (44%) or persistent (56%) AF underwent 3D delayed enhancement (DE)-MRI. ... [Abstract] [Full-text]

Predicting Post-External Beam Radiation Therapy PSA Relapse of Prostate Cancer Using Pretreatment MRI.   Int J Radiat Oncol Biol Phys.

PURPOSE: To investigate whether pretreatment endorectal magnetic resonance imaging (MRI) findings can predict biochemical relapse in patients with clinically localized prostate cancer treated with external beam radiation therapy (EBRT). METHODS AND MATERIALS: Between January 2000 and January 2002, 224 patients (median age, 69 years; age range, 45-82 years) with biopsy-proven prostate cancer underwent endorectal MRI before high-dose (>/=81Gy) EBRT. The value of multiple clinical and MRI ... [Abstract] [Full-text]

A case report of pseudoprogression followed by complete remission after proton-beam irradiation for a low-grade glioma in a teenager: the value of dynamic contrast-enhanced MRI.   Radiat Oncol, 5(1): 9.

ABSTRACT: A fourteen years-old boy was treated post-operatively with proton therapy for a recurrent low-grade oligodendroglioma located in the tectal region. Six months after the end of irradiation (RT), a new enhancing lesion appeared within the radiation fields. To differentiate disease progression from radiation-induced changes, dynamic susceptibility contrast-enhanced (DSCE) MRI was used with a T2* sequence to study perfusion and permeability characteristics simultaneously. Typically, the ... [Abstract] [Full-text]

Articles on MRI published 4 February 2010:

Spectrum of imaging findings on MRI and CT after uterine artery embolization.   Abdom Imaging, 35(1): 118-28.

Uterine artery embolization (UAE) is an effective treatment for symptomatic uterine fibroids. Magnetic resonance (MR) imaging is typically employed to evaluate the uterus following UAE for fibroid infarction, size, location change, persistent enhancement, changes in adenomyosis, and uterine necrosis. Variable pattern of calcification on computed tomography (CT) can differentiate embolic particles and fibroid involution. CT following UAE may be requested because of acute pelvic pain or chest ... [Abstract] [Full-text]

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