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MRI GUIDELINES

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https://www.readbyqxmd.com/read/28081162/beyond-pressure-gradients-the-effects-of-intervention-on-heart-power-in-aortic-coarctation
#1
Joao Filipe Fernandes, Leonid Goubergrits, Jan Brüning, Florian Hellmeier, Sarah Nordmeyer, Tiago Ferreira da Silva, Stephan Schubert, Felix Berger, Titus Kuehne, Marcus Kelm
BACKGROUND: In aortic coarctation, current guidelines recommend reducing pressure gradients that exceed given thresholds. From a physiological standpoint this should ideally improve the energy expenditure of the heart and thus prevent long term organ damage. OBJECTIVES: The aim was to assess the effects of interventional treatment on external and internal heart power (EHP, IHP) in patients with aortic coarctation and to explore the correlation of these parameters to pressure gradients obtained from heart catheterization...
2017: PloS One
https://www.readbyqxmd.com/read/28077494/practice-guideline-summary-use-of-fmri-in-the-presurgical-evaluation-of-patients-with-epilepsy-report-of-the-guideline-development-dissemination-and-implementation-subcommittee-of-the-american-academy-of-neurology
#2
Jerzy P Szaflarski, David Gloss, Jeffrey R Binder, William D Gaillard, Alexandra J Golby, Scott K Holland, Jeffrey Ojemann, David C Spencer, Sara J Swanson, Jacqueline A French, William H Theodore
OBJECTIVE: To assess the diagnostic accuracy and prognostic value of functional MRI (fMRI) in determining lateralization and predicting postsurgical language and memory outcomes. METHODS: An 11-member panel evaluated and rated available evidence according to the 2004 American Academy of Neurology process. At least 2 panelists reviewed the full text of 172 articles and selected 37 for data extraction. Case reports, reports with <15 cases, meta-analyses, and editorials were excluded...
January 11, 2017: Neurology
https://www.readbyqxmd.com/read/28076290/tailored-interactive-sequences-for-continuous-mr-image-guided-freehand-biopsies-of-different-organs-in-an-open-system-at-1-0-tesla-t-initial-experience
#3
Florian Streitparth, Christian Althoff, Martin Jonczyk, Felix Guettler, Martin Maurer, Hendrik Rathke, Keno Moritz Sponheuer, Bernd Hamm, Ulf K Teichgräber, Maximilian de Bucourt
OBJECTIVES: To assess the feasibility, image quality, and accuracy of freehand biopsies of liver, bone, muscle, vertebral disc, soft tissue, and other lesions using balanced steady-state free precession (SSFP, balanced fast field echo: bFFE), spoiled and nonspoiled gradient echo (FFE), and turbo spin echo (TSE) sequences for interactive continuous navigation in an open magnetic resonance imaging (MRI) system at 1.0 tesla (T). METHODS: Twenty-six MR-guided biopsies (five liver, five bone, four muscle, four vertebral disc, one lung, one kidney, one suprarenal gland, and five soft or other tissue) were performed in 23 patients in a 1...
January 11, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28075622/imaging-surveillance-after-primary-breast-cancer-treatment
#4
Diana L Lam, Nehmat Houssami, Janie M Lee
OBJECTIVE: Current clinical guidelines are consistent in supporting annual mammography for women after treatment of primary breast cancer. Surveillance imaging beyond standard digital mammography, including digital breast tomosynthesis (DBT), breast ultrasound, and MRI, may improve outcomes. This article reviews the evidence on the performance and effectiveness of breast imaging modalities available for surveillance after treatment of sporadic unilateral primary breast cancer and identifies additional factors to be considered when selecting an imaging surveillance regimen...
January 11, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28073906/mri-follow-up-is-unnecessary-in-patients-with-macroprolactinomas-and-long-term-normal-prolactin-levels-on-dopamine-agonist-treatment
#5
Juliette Eroukhmanoff, Isabelle Tejedor, Iulia Potorac, Thomas Cuny, Jean Francois Bonneville, Henry Dufour, Georges Weryha, Albert Beckers, Philippe Touraine, Thierry Brue, Frédéric Castinetti
OBJECTIVE Both antitumor and antisecretory efficacies of dopamine agonists (DA) make them the first line treatment of macroprolactinomas. However, there is no guideline for MRI follow-up once prolactin is controlled. The aim of our study was to determine whether a regular MRI follow-up was necessary in patients with long-term normal prolactin levels under DA. PATIENTS AND METHODS We conducted a retrospective multicenter study (Marseille, Paris La Pitie Salpetriere and Nancy, France; Liege, Belgium) including patients with macroprolactinomas (largest diameter > 10 mm, baseline prolactin level > 100 ng/mL) treated by dopamine agonists, and regularly followed (pituitary MRI and prolactin levels) during at least 48 months once normal prolactin level was obtained...
January 10, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28072381/magnetic-resonance-imaging-and-positron-emission-tomography-in-the-diagnosis-of-neurodegenerative-dementias
#6
REVIEW
A Del Sole, S Malaspina, Alberto Magenta Biasina
Neuroimaging, both with magnetic resonance imaging (MRI) and positron emission tomography (PET), has gained a pivotal role in the diagnosis of primary neurodegenerative diseases. These two techniques are used as biomarkers of both pathology and progression of Alzheimer's disease (AD) and to differentiate AD from other neurodegenerative diseases. MRI is able to identify structural changes including patterns of atrophy characterizing neurodegenerative diseases, and to distinguish these from other causes of cognitive impairment, e...
October 2016: Functional Neurology
https://www.readbyqxmd.com/read/28069628/cushing-s-syndrome-a-practical-approach-to-diagnosis-and-differential-diagnoses
#7
Joseph M Pappachan, Christian Hariman, Mahamood Edavalath, Julian Waldron, Fahmy W Hanna
Diagnosis of Cushing's syndrome (CS) and identification of the aetiology of hypercortisolism can be challenging. The Endocrine Society clinical practice guidelines recommends one of the four tests for initial screening of CS, namely, urinary-free cortisol, late night salivary cortisol, overnight dexamethasone suppression test or a longer low-dose dexamethasone suppression test, for 48 hours. Confirmation and localisation of CS requires additional biochemical and radiological tests. Radiological evaluation involves different imaging modalities including MRI with or without different radio-nuclear imaging techniques...
January 9, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28069095/deficits-in-social-cognition-an-unveiled-signature-of-multiple-sclerosis
#8
Moussa A Chalah, Samar S Ayache
BACKGROUND AND OBJECTIVES: Multiple sclerosis (MS) is a chronic progressive inflammatory disease of the central nervous system, representing the primary cause of non-traumatic disability in young adults. Cognitive dysfunction can affect patients at any time during the disease process and might alter the six core functional domains. Social cognition is a multi-component construct that includes the theory of mind, empathy and social perception of emotions from facial, bodily and vocal cues...
January 10, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28066805/evaluation-of-soft-tissue-sarcoma-response-to-preoperative-chemoradiotherapy-using-dynamic-contrast-enhanced-magnetic-resonance-imaging
#9
Wei Huang, Brooke R Beckett, Alina Tudorica, Janelle M Meyer, Aneela Afzal, Yiyi Chen, Atiya Mansoor, James B Hayden, Yee-Cheen Doung, Arthur Y Hung, Megan L Holtorf, Torrie J Aston, Christopher W Ryan
This study aims to assess the utility of quantitative dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) parameters in comparison with imaging tumor size for early prediction and evaluation of soft tissue sarcoma response to preoperative chemoradiotherapy. In total, 20 patients with intermediate- to high-grade soft tissue sarcomas received either a phase I trial regimen of sorafenib + chemoradiotherapy (n = 8) or chemoradiotherapy only (n = 12), and underwent DCE-MRI at baseline, after 2 weeks of treatment with sorafenib or after the first chemotherapy cycle, and after therapy completion...
December 2016: Tomography: a Journal for Imaging Research
https://www.readbyqxmd.com/read/28065602/diagnostic-and-therapeutic-strategy-in-meni%C3%A3-re-s-disease-guidelines-of-the-french-otorhinolaryngology-head-and-neck-surgery-society-sforl
#10
J Nevoux, V Franco-Vidal, D Bouccara, C Parietti-Winkler, A Uziel, A Chays, X Dubernard, V Couloigner, V Darrouzet, T Mom
OBJECTIVES: The authors present the guidelines of the French Otorhinolaryngology-Head and Neck Surgery Society (Société française d'oto-rhino-laryngologie et de chirurgie de la face et du cou: SFORL) for diagnostic and therapeutic strategy in Menière's disease. METHODS: A work group was entrusted with a review of the scientific literature on the above topic. Guidelines were drawn up, then read over by an editorial group independent of the work group. The guidelines were graded according to the literature analysis and recommendations grading guide published by the French National Agency for Accreditation and Evaluation in Health (January 2000)...
January 3, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28057072/microcystic-adnexal-carcinoma-mac-like-squamous-cell-carcinoma-as-a-differential-diagnosis-to-bell%C3%A2-s-palsy-review-of-guidelines-for-refractory-facial-nerve-palsy
#11
S K Mueller, H Iro, M Lell, F Seifert, C Bohr, C Scherl, A Agaimy, M Traxdorf
BACKGROUND: Bell´s palsy is the most common cause of facial paralysis worldwide and the most common disorder of the cranial nerves. It is a diagnosis of exclusion, accounting for 60-75% of all acquired peripheral facial nerve palsies. Our case shows the first case of a microcystic adnexal carcinoma-like squamous cell carcinoma as a cause of facial nerve palsy. CASE PRESENTATION: The patient, a 70-year-old Caucasian male, experienced subsequent functional impairment of the trigeminal and the glossopharyngeal nerve about 1½ years after refractory facial nerve palsy...
January 5, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28048141/su-f-j-153-acr-mri-phantom-test-on-a-1-5t-mr-simulator-with-flexible-coils-setting-and-performance-comparison-to-volumetric-head-coil-setting
#12
J Yuan, O Wong, K Cheung, S Yu
PURPOSE: To accommodate head-and-neck (HN) RT simulation scan with immobilization, sub-optimized flexible radiofrequency coils have to be used on an MR-sim rather than a volumetric head coil for diagnostic radiological (DR) applications. In this study, we present and compare ACR MRI phantom test with flexible coils setting (RT-setting) and volumetric head coil setting (DR-setting). METHODS: Two 8-channel array coils were wrapped close to an ACR MRI phantom placed on a flat couch-top in RT-setting for acquisition...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048140/mo-fg-campus-jep2-05-mri-guided-single-fraction-boost-delivery-on-individual-axillary-lymph-nodes
#13
T C F van Heijst, N Hoekstra, M E P Philippens, D Eschbach, J J W Lagendijk, H J G D van den Bongard, B van Asselen
PURPOSE: The Utrecht MRI-linac (MRL) design enables new MR-guided radiotherapy (RT) approaches. This is a feasibility study for a single-fraction high dose (boost) to individual lymph nodes (LNs) in breast-cancer patients, after breast-conserving surgery (BCS) and hypofractionated whole-breast irradiation (WBI) with conventional axillary RT (AxRT). METHODS: After written informed consent, 5 breast-cancer patients (cT1-3N0) were enrolled (NL500460.041.14 trial) and underwent 1...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047917/tu-h-campus-jep2-01-inter-observer-delineation-comparison-of-visible-glandular-breast-tissue-on-magnetic-resonance-imaging-and-computed-tomography-prone-and-supine
#14
E M Pogson, G Delaney, V Ahern, M Boxer, S David, M Dimigen, J Harvey, E Koh, K Lim, G Papadatos, M Yap, V Batumalai, P Metcalfe, L Holloway
PURPOSE: Breast cancers predominantly arise from Glandular Breast Tissue (GBT). If the GBT can be treated effectively post-operatively utilising radiotherapy this may be adequate volumetric coverage for adjuvant breast radiotherapy. Adequate imaging of the GBT is necessary and will be assessed between MRI and CT modalities. GBT visualisation is acknowledged to be qualitatively superior on Magnetic Resonance Image (MRI) compared to Computed Tomography (CT), the current radiotherapy imaging standard, however this has not been quantitatively assessed...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047616/su-g-iep1-08-mr-geometric-distortion-dependency-on-imaging-sequence-acquisition-orientation-and-receiver-bandwidth-of-a-dedicated-1-5t-mr-simulator
#15
M Law, J Yuan, O Wong, S Yu
PURPOSE: To investigate the 3D geometric distortion of four potential MR sequences for radiotheraptic applications, and its dependency on sequence-type, acquisition-orientation and receiver-bandwidth from a dedicated 1.5T 700mm-wide bore MR-simulator (Magnetom-Aera, Sienmens Healthcare, Erlangen, Germany), using a large customized geometric accuracy phantom. METHODS: This work studied 3D gradient-echo (VIBE) and spin-echo (SPACE) sequences for anatomical imaging; a specific ultra-short-TE sequence (PETRA) potentially for bone imaging and MR-based dosimetry; and a motion-insensitive sequence (BLADE) for dynamic applications like 4D-MRI...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047476/su-f-i-16-short-breast-mri-with-high-resolution-t2-weighted-and-dynamic-contrast-enhanced-t1-weighted-images
#16
J Ma, J Son, B Arun, J Hazle, K Hwang, K Wang, E Bayram, J Madewell, W Yang, B Dogan
PURPOSE: To develop and demonstrate a short breast (sb) MRI protocol that acquires both T2-weighted and dynamic contrast-enhanced T1-weighted images in approximately ten minutes. METHODS: The sb-MRI protocol consists of two novel pulse sequences. The first is a flexible fast spin-echo triple-echo Dixon (FTED) sequence for high-resolution fat-suppressed T2-weighted imaging, and the second is a 3D fast dual-echo spoiled gradient sequence (FLEX) for volumetric fat-suppressed T1-weighted imaging before and post contrast agent injection...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044054/pituitary-metastasis-from-renal-cell-carcinoma-description-of-a-case-report
#17
Chloé Wendel, Marco Campitiello, Francesca Plastino, Nada Eid, Laurent Hennequin, Philippe Quétin, Raffaele Longo
BACKGROUND Pituitary metastasis is uncommon, breast and lung cancers being the most frequent primary tumors. Renal cell carcinoma (RCC) is a rare cause of pituitary metastases, with only a few cases described to date. CASE REPORT We report a case of a 61-year-old man who presented with a progressive deterioration of visual acuity and field associated with a bitemporal hemianopsia. Two years ago, he underwent radical right nephrectomy for a clear cell RCC (ccRCC). The biological tests showed pan-hypopituitarism and diabetes insipidus...
January 3, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28041315/anatomic-and-functional-imaging-in-the-diagnosis-of-spine-metastases-and-response-assessment-after-spine-radiosurgery
#18
Moaaz Soliman, Neil K Taunk, Robert E Simons, Joseph R Osborne, Michelle M Kim, Nicholas J Szerlip, Daniel E Spratt
Spine stereotactic radiosurgery (SSRS) has recently emerged as an increasingly effective treatment for spinal metastases. Studies performed over the past decade have examined the role of imaging in the diagnosis of metastases, as well as treatment response following SSRS. In this paper, the authors describe and review the utility of several imaging modalities in the diagnosis of spinal metastases and monitoring of their response to SSRS. Specifically, we review the role of CT, MRI, and positron emission tomography (PET) in their ability to differentiate between osteoblastic and osteolytic lesions, delineation of initial bony pathology, detection of treatment-related changes in bone density and vertebral compression fracture after SSRS, and tumor response to therapy...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28028930/an-update-on-cancer-risk-and-surveillance-in-primary-sclerosing-cholangitis
#19
Jennifer L Horsley-Silva, Eduardo A Rodriguez, Diana L Franco, Keith D Lindor
Malignancy represents substantial morbidity and mortality in patients with primary sclerosing cholangitis (PSC). This subset of patients has been proven to be at increased risk for developing cholangiocarcinoma, gallbladder carcinoma, and colorectal cancer in those with overlapping inflammatory bowel disease. Herein we review the prevalence of these malignancies and recommend screening tools and current knowledge to reduce the disease burden in this population. Cholangiocarcinoma is the most dominant malignancy affecting PSC patients, with a lifetime risk ranging from 5-20%...
December 27, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28011082/-neonatal-arterial-ischemic-stroke-review-of-the-current-guidelines
#20
E Saliba, T Debillon, S Auvin, O Baud, V Biran, J-L Chabernaud, S Chabrier, F Cneude, A-G Cordier, V Darmency-Stamboul, J-F Diependaele, T Debillon, M Dinomais, C Durand, A Ego, G Favrais, Y Gruel, L Hertz-Pannier, B Husson, S Marret, S N'Guyen The Tich, T Perez, E Saliba, J-B Valentin, C Vuillerot
Neonatal arterial ischemic stroke (NAIS) is a rare event that occurs in approximately one in 5000 term or close-to-term infants. Most affected infants will present with seizures. Although a well-recognized clinical entity, many questions remain regarding diagnosis, risk factors, treatment, and follow-up modalities. In the absence of a known pathophysiological mechanism and lack of evidence-based guidelines, only supportive care is currently provided. To address these issues, a French national committee set up by the French Neonatal Society (Société française de néonatologie) and the national referral center (Centre national de référence) for arterial ischemic stroke in children drew up guidelines based on an HAS (Haute Autorité de santé [HAS]; French national authority for health) methodology...
December 20, 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
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