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https://www.readbyqxmd.com/read/27933697/total-magnetic-resonance-imaging-burden-of-cerebral-small-vessel-disease-is-associated-with-post-stroke-depression-in-patients-with-acute-lacunar-stroke
#1
X Zhang, Y Tang, Y Xie, C Ding, J Xiao, X Jiang, H Shan, Y Lin, C Li, D Hu, T Li, L Sheng
BACKGROUND AND PURPOSE: Despite extensive studies on post-stroke depression (PSD), the role of the total burden of cerebral small-vessel disease (cSVD) in its pathogenesis remains unclear. METHODS: We conducted a magnetic resonance imaging (MRI)-based cohort study to investigate the relationship between total MRI burden of cSVD and PSD among patients with first-ever lacunar stroke. From June 2013 to January 2016, 374 patients were consecutively recruited. PSD was identified using the Chinese version of the Structured Clinical Interview for DSM-IV...
December 9, 2016: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/27933641/method-of-b0-mapping-with-magnitude-based-correction-for-bipolar-two-point-dixon-cardiac-mri
#2
Junmin Liu, Dana C Peters, Maria Drangova
PURPOSE: The conventional two-point (2pt) Dixon technique explicitly estimates B0 map by performing phase unwrapping. When signal loss, phase singularity, artifacts, or spatially isolated regions corrupt the measured phase images, this unwrapping-based technique will face difficulty. This work aims to improve the reliability of B0 mapping by performing unwrapping error correction. METHOD: To detect the unwrapping-caused phase errors, we determined a magnitude-based fat/water mask and used it as reference to identify pixels being mismatched by the phase-based mask, which was derived from the B0-corrected phase term of the Hermitian product between echoes...
December 8, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27933478/mri-in-pelvic-inflammatory-disease-a-pictorial-review
#3
REVIEW
Ferenc Czeyda-Pommersheim, Bobby Kalb, James Costello, Joy Liau, Arash Meshksar, Hina Arif Tiwari, Diego Martin
Pelvic inflammatory disease (PID) is an ascending infection of the female genital tract caused by the spread of bacteria from the vagina to the pelvic reproductive organs and occasionally the peritoneum. The most common causative organisms are sexually transmitted. PID is a significant source of morbidity among reproductive age women both as a cause of abdominal pain and as a common cause of infertility. Its clinical presentation is often nonspecific, and the correct diagnosis may first come to light based on the results of imaging studies...
December 8, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27933441/multimodality-imaging-to-assess-immediate-response-following-irreversible-electroporation-in-patients-with-malignant-hepatic-tumors
#4
Katsutoshi Sugimoto, Fuminori Moriyasu, Kazuhiro Saito, Yoshiyuki Kobayashi, Takao Itoi
PURPOSE: To assess the diagnostic accuracy of contrast-enhanced ultrasound (CEUS), contrast-enhanced multiphase CT (CECT), and gadoxetic acid-enhanced MRI (EOB-MRI) in identifying residual tumor in the subacute follow-up of patients with malignant hepatic tumors treated by irreversible electroporation (IRE). METHODS: We enrolled 16 patients with 21 hepatic lesions treated by IRE and examined by CEUS and CECT at 1 day after IRE and by EOB-MRI at 7 days after IRE...
December 8, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27933410/magnetic-resonance-imaging-patterns-of-treatment-related-toxicity-in-the-pediatric-brain-an-update-and-review-of-the-literature
#5
REVIEW
Maria Camilla Rossi Espagnet, Luca Pasquini, Antonio Napolitano, Antonella Cacchione, Angela Mastronuzzi, Roberta Caruso, Paolo Tomà, Daniela Longo
Treatment-related neurotoxicity is a potentially life-threatening clinical condition that can represent a diagnostic challenge. Differentiating diagnoses between therapy-associated brain injury and recurrent disease can be difficult, and the immediate recognition of neurotoxicity is crucial to providing correct therapeutic management, ensuring damage reversibility. For these purposes, the knowledge of clinical timing and specific treatment protocols is extremely important for interpreting MRI patterns. Neuroradiologic findings are heterogeneous and sometimes overlapping, representing the compounding effect of the different treatments...
December 9, 2016: Pediatric Radiology
https://www.readbyqxmd.com/read/27933409/imaging-trends-in-suspected-appendicitis-a-canadian-perspective
#6
Victoria F Tan, Michael N Patlas, Douglas S Katz
PURPOSE: The purpose of our study was to assess trends in the imaging of suspected appendicitis in adult patients in emergency departments of academic centers in Canada. METHODS: A questionnaire was sent to all 17 academic centers in Canada to be completed by a radiologist who works in emergency radiology. The questionnaires were sent and collected over a period of 4 months from October 2015 to February 2016. RESULTS: Sixteen centers (94%) responded to the questionnaire...
December 8, 2016: Emergency Radiology
https://www.readbyqxmd.com/read/27933280/bone-imaging-in-prostate-cancer-the-evolving-roles-of-nuclear-medicine-and-radiology
#7
REVIEW
Gary J R Cook, Gurdip Azad, Anwar R Padhani
The bone scan continues to be recommended for both the staging and therapy response assessment of skeletal metastases from prostate cancer. However, it is widely recognised that bone scans have limited sensitivity for disease detection and is both insensitive and non-specific for determining treatment response, at an early enough time point to be clinically useful. We, therefore, review the evolving roles of nuclear medicine and radiology for this application. We have reviewed the published literature reporting recent developments in imaging bone metastases in prostate cancer, and provide a balanced synopsis of the state of the art...
2016: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27933253/primary-intracerebral-osteosarcoma-a-rare-case-report-and-review
#8
Song-Ping Chen, Jin-Long Tang, Xiu-Liang Zhu
BACKGROUND: Primary intracranial osteosarcoma is a extremely rare disease entity. We describe a case of primary intracerebral osteosarcoma in an adult brain. CASE DESCRIPTION: A patient who presented with a 1-week history of headaches, and MRI examination was performed. The immunohistochemical diagnosis confirmed primary intracerebral osteosarcoma. The patient was treated with a surgical resection of the tumor. CONCLUSION: Primary osteosarcomas occurring in the brain are extremely rare...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27933207/what-is-the-reliability-of-non-trained-investigators-in-recognising-structural-mri-lesions-of-sacroiliac-joints-in-patients-with-recent-inflammatory-back-pain-results-of-the-desir-cohort
#9
Charlotte Jacquemin, Roxana Rubio Vargas, Rosaline van den Berg, Fabrice Thévenin, Gregory Lenczner, Monique Reijnierse, Salah Ferkal, Philippe Le Corvoisier, Alain Rahmouni, Damien Loeuille, Antoine Feydy, Maxime Dougados, Désirée van der Heijde, Pascal Claudepierre
OBJECTIVE: The objective of this study was to evaluate the reliability of recognising structural lesions on MRI (erosions, fatty lesions, ankylosis) of the sacroiliac joints (MRI-SIJ) in clinical practice compared to a central reading in patients with a possible recent axial spondyloarthritis (axSpA). METHODS: Patients aged 18-50 years, with recent (<3 years) and chronic (≥3 months) inflammatory back pain, suggestive of axSpA were included in the DEvenir des Spondyloarthrites Indifférenciées Récentes (DESIR) cohort...
2016: RMD Open
https://www.readbyqxmd.com/read/27932596/infantile-lhermitte-duclos-disease-treated-successfully-with-rapamycin
#10
Megan Zak, Mark Ledbetter, Paul Maertens
Lhermitte-Duclos disease is a rare hamartomatous tumor of the cerebellum resulting from a mutation in the phosphatase and tensin homolog (PTEN) gene: it has been reported in fewer than 10 infants. Rapamycin treatment has not yet been described in Lhermitte-Duclos disease. The infant underwent shunt placement shortly after birth for aqueductal stenosis. Her clinical progression included failure to thrive, seizures, episodes of decerebrate posturing, loss of respiratory drive, and pituitary insufficiency from mass effect...
December 8, 2016: Journal of Child Neurology
https://www.readbyqxmd.com/read/27932506/synthetic-mri-in-the-detection-of-multiple-sclerosis-plaques
#11
A Hagiwara, M Hori, K Yokoyama, M Y Takemura, C Andica, T Tabata, K Kamagata, M Suzuki, K K Kumamaru, M Nakazawa, N Takano, H Kawasaki, N Hamasaki, A Kunimatsu, S Aoki
BACKGROUND AND PURPOSE: Synthetic MR imaging enables the creation of various contrast-weighted images including double inversion recovery and phase-sensitive inversion recovery from a single MR imaging quantification scan. Here, we assessed whether synthetic MR imaging is suitable for detecting MS plaques. MATERIALS AND METHODS: Quantitative and conventional MR imaging data on 12 patients with MS were retrospectively analyzed. Synthetic T2-weighted, FLAIR, double inversion recovery, and phase-sensitive inversion recovery images were produced after quantification of T1 and T2 values and proton density...
December 8, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27932505/diagnostic-accuracy-of-t1-weighted-dynamic-contrast-enhanced-mri-and-dwi-adc-for-differentiation-of-glioblastoma-and-primary-cns-lymphoma
#12
X Lin, M Lee, O Buck, K M Woo, Z Zhang, V Hatzoglou, A Omuro, J Arevalo-Perez, A A Thomas, J Huse, K Peck, A I Holodny, R J Young
BACKGROUND AND PURPOSE: Glioblastoma and primary CNS lymphoma dictate different neurosurgical strategies; it is critical to distinguish them preoperatively. However, current imaging modalities do not effectively differentiate them. We aimed to examine the use of DWI and T1-weighted dynamic contrast-enhanced-MR imaging as potential discriminative tools. MATERIALS AND METHODS: We retrospectively reviewed 18 patients with primary CNS lymphoma and 36 matched patients with glioblastoma with pretreatment DWI and dynamic contrast-enhanced-MR imaging...
December 8, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27932250/false-negative-mri-breast-screening-in-high-risk-women
#13
A J Maxwell, Y Y Lim, E Hurley, D G Evans, A Howell, S Gadde
AIM: To determine the frequency of and reasons for false-negative breast magnetic resonance imaging (MRI) examinations in high-risk women undergoing annual screening. MATERIALS AND METHODS: The family history clinic database was interrogated and women at high risk of breast cancer who had undergone screening MRI and been diagnosed with breast cancer within 2 years of the MRI examination were identified. All available MRI examinations were reviewed and classified by two radiologists...
December 5, 2016: Clinical Radiology
https://www.readbyqxmd.com/read/27932167/gangliocytoma-presenting-with-tacrolimus-neurotoxicity-in-a-renal-transplant-recipient-case-report
#14
S Alagoz, S Gulcicek, M Oruc, S Trabulus, N Seyahi
Tacrolimus is a widely used macrolide immunosuppressant in transplant surgery, with mild and major neurologic side effects. A 21-year-old woman had undergone preemptive transplantation of a kidney from her mother. On the 1st postoperative day, the patient had headache, nausea, vomiting, and agitation. Magnetic resonance imaging (MRI) of the brain showed hyperintensity and a lesion in the right mesial temporal lobe. After we switched from tacrolimus to cyclosporine, the symptoms regressed. Persistence of the lesion, confirmed by repeated MRI, required that the patient be operated on...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27931962/imaging-of-vasculitis-state-of-the-art
#15
REVIEW
Francesco Muratore, Nicolò Pipitone, Carlo Salvarani, Wolfgang A Schmidt
The increasing availability and improvement of imaging techniques are making a profound impact in the evaluation and management of patients with vasculitis, particularly for those with large vessel vasculitis, and will most likely play an ever more important role in the future. Deep, large vessels can be examined by CT or MRI, while ultrasound is the method of choice for the evaluation of superficial vessels (such as temporal, carotid, and axillary arteries). PET is very sensitive in detecting large vessel inflammation, but it does not delineate the vessel wall...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27931960/imaging-of-osteoarthritis-oa-what-is-new
#16
REVIEW
Alexander Mathiessen, Marco Amedeo Cimmino, Hilde Berner Hammer, Ida Kristin Haugen, Annamaria Iagnocco, Philip G Conaghan
In daily clinical practice, conventional radiography is still the most applied imaging technique to supplement clinical examination of patients with suspected osteoarthritis (OA); it may not always be needed for diagnosis. Modern imaging modalities can visualize multiple aspects of the joint, and depending on the diagnostic need, radiography may no longer be the modality of choice. Magnetic resonance imaging (MRI) provides a complete assessment of the joint and has a pivotal role in OA research. Computed tomography (CT) and nuclear medicine offer alternatives in research scenarios, while ultrasound can visualize bony and soft-tissue pathologies and is highly feasible in the clinic...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27931959/imaging-of-gout-new-tools-and-biomarkers
#17
REVIEW
Elizabeth G Araujo, Bernhard Manger, Fernando Perez-Ruiz, Ralf G Thiele
While joint aspiration and crystal identification by polarizing microscopy remain the gold standard for diagnosing tophaceous gout, agreement among medical and ancillary health personnel examining synovial fluid using polarizing microscopy for the detection of monosodium urate (MSU) crystals appears to be poor. Imaging modalities, including conventional radiography (CR), ultrasonography (US), magnetic resonance imaging (MRI), and dual-energy computed tomography (DECT), have been found to provide information on the deposition of MSU crystals in tissues, and the consequences of such deposition...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27931958/imaging-in-the-diagnosis-and-management-of-peripheral-psoriatic-arthritis-the-clinical-utility-of-magnetic-resonance-imaging-and-ultrasonography
#18
REVIEW
Mikkel Østergaard, Lihi Eder, Sara Nysom Christiansen, Gurjit S Kaeley
Psoriatic arthritis (PsA) is an inflammatory joint disease characterised by the presence of arthritis and often enthesitis and/or spondylitis in patients with psoriasis. However, it presents a wide range of disease manifestations in various patterns. Imaging is an important part of management of PsA, and is used for multiple reasons including establishing/confirming a diagnosis of inflammatory joint disease, determining the extent of disease, monitoring activity and damage, assessing therapeutic efficacy, and identifying complications of disease or treatment, in the setting of clinical practice or clinical studies...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27931957/imaging-in-the-diagnosis-and-management-of-axial-spondyloarthritis
#19
REVIEW
Xenophon Baraliakos, Walter P Maksymowych
Magnetic resonance imaging (MRI) is the imaging modality of choice for diagnosing axial spondyloarthritis (SpA) when the pelvic radiograph is normal or equivocal. Subchodral bone marrow edema (BME) is the primary feature of early SpA, although structural changes, particularly erosions, may also be seen at an early stage. It is unclear whether incorporation of structural lesions enhances the classification performance of a positive MRI definition based on BME alone. Neither spinal imaging nor contrast-enhanced imaging are useful for routine diagnostic evaluation...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27931956/diagnosis-and-management-of-rheumatoid-arthritis-what-is-the-current-role-of-established-and-new-imaging-techniques-in-clinical-practice
#20
REVIEW
Maria Antonietta D'Agostino, Espen A Haavardsholm, Conny J van der Laken
Ultrasound and magnetic resonance imaging (MRI) have become established imaging techniques for the management of rheumatoid arthritis. Several publications have pointed out the advantages of these techniques for a more complete evaluation of the inflammation and structural damage at joint level. Recently new imaging techniques as the positron emission tomography (PET) associated with computed tomography (CT) or MRI scan, and the optical imaging have been introduced in the panorama. This article presents the advantages and limitations of each imaging techniques in light with the recent publications...
August 2016: Best Practice & Research. Clinical Rheumatology
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