scholarly journals Standardised work-up programme for fever of unknown origin and contribution of magnetic resonance imaging for the diagnosis of hidden systemic vasculitis

2005 ◽  
Vol 64 (1) ◽  
pp. 105-110 ◽  
Author(s):  
A D Wagner
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Fever Of Unknown Origin ◽  
Systemic Vasculitis ◽  
Unknown Origin ◽  
Resonance Imaging ◽  
Work Up

scholarly journals Pulvinar sign in a case of anti-HU paraneoplastic encephalitis

2016 ◽  
Vol 29 (6) ◽  
pp. 436-439 ◽  
Author(s):  
Pierre-Luc Gamache ◽  
Maude-Marie Gagnon ◽  
Martin Savard ◽  
François Émond
Keyword(s):  
Magnetic Resonance Imaging ◽  
Differential Diagnosis ◽  
Magnetic Resonance ◽  
Clinical Manifestations ◽  
Resonance Imaging ◽  
Paraneoplastic Encephalitis ◽  
Jakob Disease ◽  
Magnetic Resonance Imaging Mri ◽  
Work Up

This article reports the case of a 68-year-old patient with anti-HU antibodies paraneoplastic encephalitis. The clinical manifestations were atypical and the paraclinical work-up, notably the magnetic resonance imaging (MRI) showing bilateral posterior thalamic hyperintensities (pulvinar sign), misleadingly pointed towards a variant Creutzfeld–Jakob disease. After presenting the case, the differential diagnosis of the pulvinar sign is discussed along with other important diagnostic considerations.

scholarly journals The Usefulness of Magnetic Resonance Imaging of the Cardiovascular System in the Diagnostic Work-Up of Patients With Turner Syndrome

2018 ◽  
Vol 9 ◽  
Author(s):  
Monika Obara-Moszynska ◽  
Justyna Rajewska-Tabor ◽  
Szymon Rozmiarek ◽  
Katarzyna Karmelita-Katulska ◽  
Anna Kociemba ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cardiovascular System ◽  
Turner Syndrome ◽  
Resonance Imaging ◽  
Diagnostic Work ◽  
Work Up ◽  
Diagnostic Work Up

scholarly journals Noninvasive assessment of ischemic penumbra by using MR-SWI during the acute phase of cerebral infarction: a comparison to PWI

2015 ◽  
Vol 42 (S1) ◽  
pp. S36-S36
Author(s):  
S Luo ◽  
X Wu ◽  
F Deng ◽  
Y Zhang ◽  
J Miao ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cerebral Infarction ◽  
Cerebral Blood Volume ◽  
Unmet Need ◽  
Acute Stage ◽  
Ischemic Penumbra ◽  
Resonance Imaging ◽  
Stroke Evolution ◽  
Work Up

Background: Assessment of ischemic penumbra during the acute stage of cerebral infarction is crucial for a decision to initiate thrombolytic therapy and for predicting stroke evolution. Although controversial as a perfect equivalence to penumbra, perfusion weighted imaging (PWI)-diffusion weighted imaging (DWI) mismatch may predict the response to thrombolysis. Due to the reliance on contrast agents in PWI, noninvasive alternatives remain an unmet need. Methods: We herein investigate the potentials of SWI as an alternative to PWI in defining ischemic penumbra and in predicting stroke outcome. A multimodal magnetic resonance imaging work-up which includes conventional magnetic resonance imaging sequences (T1WI, T2WI and FLAIR), DWI, PWI and SWI was performed. The Alberta Stroke Programme Early CT Score (ASPECTS) was used to evaluate the changes in DWI, SWI and PWI. Results: The mismatch of SWI-DWI was comparable with that of PWI-DWI (p>0.05). Furthermore, the grade of prominent vein and the cerebral blood volume in the ipsilateral brain tissue were positively correlated. Conclusions: SWI can be used as a noninvasive alternative to identify occlusive arteries and to evaluate the ischemic penumbra. The susceptibility vein sign may represent thrombosis in arteries whereby being helpful to identify responsible blood vessels in ischemic stroke.

Diagnostic value of magnetic resonance imaging in perimesencephalic and nonperimesencephalic subarachnoid hemorrhage of unknown origin

2011 ◽  
Vol 114 (4) ◽  
pp. 1003-1007 ◽  
Author(s):  
Homajoun Maslehaty ◽  
Athanassios K. Petridis ◽  
Harald Barth ◽  
Hubertus Maximilian Mehdorn
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Unknown Origin ◽  
Diagnostic Value ◽  
Digital Subtraction ◽  
Resonance Imaging ◽  
Bleeding Pattern ◽  
Group 2 ◽  
Group 1

Object The aim of this study was to evaluate the diagnostic value of MR imaging in perimesencephalic (PM) and nonperimesencephalic (non-PM) subarachnoid hemorrhage (SAH) of unknown origin. Methods The authors conducted a retrospective review of all patients with SAH (1226 patients) in their department between January 1991 and December 2008. Included in the study were cases of spontaneous SAH diagnosed using CT scans obtained within 24 hours of the initial symptoms and initially negative digital subtraction (DS) angiograms. Patients with traumatic SAH and an unknown history were excluded from the study. Patients with initially negative DS angiograms were divided into 2 groups: Group 1, a typically PM bleeding pattern (PM SAH); and Group 2, a non-PM bleeding pattern (non-PM SAH) such as hemorrhage in the sylvian or interhemispheric fissure. Cranial MR imaging including the craniocervical region was performed within 72 hours after SAH was diagnosed in all patients in Groups 1 and 2. Results One thousand sixty-eight patients underwent DS angiography, and among them were 179 (16.7%) with negative angiograms—47 patients (26.3%) from Group 1 and 132 patients (73.7%) from Group 2. Magnetic resonance imaging demonstrated no bleeding sources in any case (100% negative). Thirty-four patients in Group 1 and 120 patients in Group 2 underwent a second DS angiography study. Digital subtraction angiography revealed an aneurysm as the bleeding source in 1 case in Group 1 and in 13 cases in Group 2. Conclusions Magnetic resonance imaging of the brain and craniocervical region did not produce additional benefit for the detection of a bleeding source and the therapy administered for PM SAH and non-PM SAH (100% negative). The costs of this examination exceeded the clinical value. Despite the results of this study, MR imaging should be discussed on a case-by-case basis because rare bleeding sources are periodically diagnosed in cases of non-PM SAH. A second-look DS angiogram is necessary because aneurysmal hemorrhage occasionally produces PM SAH as well as non-PM SAH. Further prospective studies are needed to verify the authors' results in the future.

Musculotendinous Disorders of the Abdomen and Pelvis

2017 ◽  
Vol 21 (04) ◽  
pp. 403-414
Author(s):  
William Palmer ◽  
Miriam Bredella ◽  
Arvin Kheterpal
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Groin Pain ◽  
Iliotibial Band ◽  
Normal Anatomy ◽  
Resonance Imaging ◽  
Injury Mechanisms ◽  
Common Causes ◽  
Magnetic Resonance Imaging Mri ◽  
Work Up

AbstractMusculotendinous disorders of the abdomen and pelvis are common causes of pain in both athletes and nonathletes. Magnetic resonance imaging (MRI) is the modality of choice in the work-up of these patients. This article focuses on the MRI appearance of normal anatomy and spectrum of musculotendinous disorders in the abdomen and pelvis including muscle strains and tears, avulsions and apophysitis, muscular contusions, athletic groin pain, and gluteal aponeurotic/proximal iliotibial band injuries. Normal biomechanics and injury mechanisms are discussed.

Magnetic resonance imaging including magnetic resonance cholangiopancreatography for tumor localization and therapy planning in malignant hilar obstructions

2005 ◽  
Vol 46 (5) ◽  
pp. 462-470 ◽  
Author(s):  
E. L. Hänninen ◽  
M. Pech ◽  
S. Jonas ◽  
J. Ricke ◽  
A. Thelen ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Image Quality ◽  
Single Shot ◽  
Therapy Planning ◽  
Resonance Imaging ◽  
Thick Slab ◽  
Thin Slice ◽  
Adjacent Structures ◽  
Work Up

Purpose: To assess image quality and overall accuracy of magnetic resonance imaging (MRI), including two magnetic cholangiopancreatography (MRCP) techniques, for the diagnostics and preoperative work-up of malignant hilar obstructions. Material and Methods: Thirty-one patients with malignant hilar obstructions (hilar cholangiocarcinoma, n = 30; hepatocellular carcinoma, n = 1) received MRCP by two techniques (single-shot thick-slab and multisection thin-slice MRCP) and unenhanced and contrast material-enhanced MRI. MR assessment included the evaluation of image quality and visualization of bile ducts (5-point scale), and the classification of tumor status. MR results were subsequently correlated with the results from surgery and pathology. Results: The maximum intensity projections of multisection thin-slice MRCP had significantly more artifacts compared to MRCP in the single-shot thick-slab technique, and overall image quality of single-shot thick-slab MRCP was rated significantly superior compared to multisection thin-slice MRCP (4.4±0.7 and 4.1±0.9, respectively). Moreover, ductal visualization of different parts of the biliary system was rated superior with single-shot thick-slab MRCP. In contrast, the original data from multisection thin slice MRCP facilitated visualization of periductal lesions and adjacent structures. Overall MR accuracy for the assessment of tumor status, periductal infiltration, and lymph node metastases was 90%, 87%, and 66%, respectively. Conclusion: For evaluation of malignant hilar obstructions, MRCP by the single-shot thick-slab technique had superior image quality and fewer artifacts; in contrast, besides sole biliary visualization, multisection MRCP depicted complementary adjacent parenchymal and periductal structures. We therefore recommend MRI, with a combination of both MRCP techniques, for the diagnostic work-up and therapy planning of malignant hilar obstructions.

scholarly journals Fever of unknown origin - Hidden in the head

2015 ◽  
Vol 10 (1) ◽  
pp. 62
Author(s):  
Kamal Kishore Pandita ◽  
Khalid Javid Bhat ◽  
Sushil Razdan ◽  
Rattan Parkash Kudyar
Keyword(s):  
Magnetic Resonance Imaging ◽  
Fever Of Unknown Origin ◽  
Unknown Origin ◽  
Pet Scan ◽  
Emission Tomography ◽  
Resonance Imaging ◽  
Algorithmic Approach ◽  
Positron Emission ◽  
Magnetic Resonance Imaging Mri ◽  
Diagnostic Clue

The original algorithmic approach, as outlined by de Kleijn and colleagues and practiced commonly, envisages performing computed tomography (CT) of chest, abdomen, and pelvis in patients with classical fever of unknown origin (FUO), in whom <em>no potentially diagnostic clue</em> exists. It further envisages performing positron emission tomography (PET) scan, if CT scan is unrevealing. Imaging of head and neck especially magnetic resonance imaging (MRI) has not been included in this algorithm, that leaves these important regions unexplored in most settings where PET scan is unavailable. MRI is a safe modality for evaluating central nervous system lesions and its role in FUO has not been adequately evaluated. We present three patients of FUO in whom the diagnosis of tuberculoma of brain as a cause of prolonged pyrexia got delayed because the MRI of head was not done initially, to comply with the approach of minimum diagnostic evaluation.

Sign in / Sign up

Export Citation Format

Share Document