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https://www.readbyqxmd.com/read/29221964/inflammatory-hepatic-adenomas-characterization-with-hepatobiliary-mri-contrast-agents
#1
James F Glockner, Christine U Lee, Taofic Mounajjed
PURPOSE: To characterize the MRI appearance of inflammatory hepatic adenomas using hepatobiliary contrast agents. MATERIALS AND METHODS: MRI was performed using hepatobiliary contrast agents (3 with gadobenate dimeglumine and 24 with gadoxetic acid) in 27 patients with immunohistochemistry-confirmed diagnosis of inflammatory hepatic adenoma. The appearance of the lesions on T2 and diffusion-weighted images, pre-gadolinium T1-weighted images, dynamic post-gadolinium images, and hepatobiliary phase images was assessed...
December 5, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29220823/patterns-of-progressive-atrophy-vary-with-age-in-alzheimer-s-disease-patients
#2
Cassidy M Fiford, Gerard R Ridgway, David M Cash, Marc Modat, Jennifer Nicholas, Emily N Manning, Ian B Malone, Geert Jan Biessels, Sebastien Ourselin, Owen T Carmichael, M Jorge Cardoso, Josephine Barnes
Age is not only the greatest risk factor for Alzheimer's disease (AD) but also a key modifier of disease presentation and progression. Here, we investigate how longitudinal atrophy patterns vary with age in mild cognitive impairment (MCI) and AD. Data comprised serial longitudinal 1.5-T magnetic resonance imaging scans from 153 AD, 339 MCI, and 191 control subjects. Voxel-wise maps of longitudinal volume change were obtained and aligned across subjects. Local volume change was then modeled in terms of diagnostic group and an interaction between group and age, adjusted for total intracranial volume, white-matter hyperintensity volume, and apolipoprotein E genotype...
November 14, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29217741/on-the-reproducibility-of-inversion-recovery-intravoxel-incoherent-motion-imaging-in-cerebrovascular-disease
#3
S M Wong, W H Backes, C E Zhang, J Staals, R J van Oostenbrugge, C R L P N Jeukens, J F A Jansen
BACKGROUND AND PURPOSE: Intravoxel incoherent motion imaging can measure both microvascular and parenchymal abnormalities simultaneously. The contamination of CSF signal can be suppressed using inversion recovery preparation. The clinical feasibility of inversion recovery-intravoxel incoherent motion imaging was investigated in patients with cerebrovascular disease by studying its reproducibility. MATERIALS AND METHODS: Sixteen patients with cerebrovascular disease (66 ± 8 years of age) underwent inversion recovery-intravoxel incoherent motion imaging twice...
December 7, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29214778/supplementary-diagnostic-landmarks-of-left-ventricular-non-compaction-on-magnetic-resonance-imaging
#4
Marko Boban, Vladimir Pesa, Natko Beck, Sime Manola, Marinko Zulj, Ante Rotim, Aleksandar Vcev
PURPOSE: Diagnostic criteria for left ventricular non-compaction (LVNC) are still a matter of dispute. The aim of our present study was to test the diagnostic value of two novel diagnostic cardiac magnetic resonance (CMR) parameters: proof of non-compact (NC) myocardium blood flow using T2 sequences and changes in geometry of the left ventricle. MATERIALS AND METHODS: The study included cases with LVNC and controls, from a data base formed in a period of 3.5 years (n=1890 exams), in which CMR protocol included T2 sequences...
January 2018: Yonsei Medical Journal
https://www.readbyqxmd.com/read/29214167/comparison-of-us-strain-elastography-and-entero-mri-to-typify-the-mesenteric-and-bowel-wall-changes-during-crohn-s-disease-a-pilot-study
#5
Giuseppe Lo Re, Dario Picone, Federica Vernuccio, Laura Scopelliti, Ambra Di Piazza, Chiara Tudisca, Salvatore Serraino, Giambattista Privitera, Federico Midiri, Sergio Salerno, Massimo Midiri, Tommaso Vincenzo Bartolotta, Roberto Lagalla
Purpose: To evaluate and compare the mesenteric and bowel wall changes during Crohn's disease (CD) on ultrasonography (US) Strain Elastography (SE) and Enterography Magnetic Resonance Imaging (E-MRI). Methods: From July 2014 to September 2016, 35 patients with ileocolonoscopy diagnosis of CD were prospectively examined with E-MRI and in the same time with US and SE. Results: A total of 41 affected bowel segments and 35 unaffected bowel segments in 35 patients were evaluated...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29210074/white-matter-degeneration-in-vascular-and-other-ageing-related-dementias
#6
REVIEW
Yoshika Hase, Karen Horsburgh, Masafumi Ihara, Raj N Kalaria
Advances in neuroimaging have enabled greater understanding of the progression of cerebral degenerative processes associated with ageing-related dementias. Leukoaraiosis or rarefied white matter (WM) originally described on computed tomography is one of the most prominent changes which occurs in older age. White matter hyperintensities (WMH) evident on magnetic resonance imaging have become commonplace to describe WM changes in relation to cognitive dysfunction, types of stroke injury, cerebral small vessel disease and neurodegenerative disorders including Alzheimer's disease...
December 6, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29208312/gadolinium-deposition-in-the-paediatric-brain-t1-weighted-hyperintensity-within-the-dentate-nucleus-following-repeated-gadolinium-based-contrast-agent-administration
#7
J R Young, I Orosz, M A Franke, H J Kim, D Woodworth, B M Ellingson, N Salamon, W B Pope
AIM: To determine whether repeated gadolinium-based contrast agent administration (GBCA) in children is associated with the development of increased T1-weighted signal intensity within the cerebellar dentate nucleus. MATERIALS AND METHODS: With institutional review board approval for this The Health Insurance Portability and Accountability Act-compliant retrospective study, a cohort of 41 patients under the age of 18 years who underwent at least four contrast-enhanced magnetic resonance imaging (MR) examinations of the brain from 2005 to 2015 were identified...
December 2, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/29204290/meningeal-carcinomatosis-and-spinal-cord-infiltration-caused-by-a-locally-invasive-pulmonary-adenocarcinoma-in-a-cat
#8
Christoforos Posporis, Llorenç Grau-Roma, Olga Travetti, Maria Oliveira, Laura Polledo, Annette Wessmann
Case summary: A 12-year-old domestic shorthair cat was presented with acute non-painful hindlimb proprioceptive ataxia localising to T3-L3 spinal cord segments. MRI revealed paravertebral muscular hyperintensity on T2-weighted images at the level of T7-T8 vertebrae. The cat improved on conservative management but deteriorated 3 months later. Repeated MRI showed meningeal enhancement at the same level and hyperintensity of the paravertebral musculature extending to the right thoracic wall and pleural space on short tau inversion recovery images...
July 2017: JFMS Open Reports
https://www.readbyqxmd.com/read/29204189/reversible-splenial-lesion-syndrome-resles-coinciding-with-cerebral-venous-thrombosis-a-report-of-two-cases
#9
REVIEW
Jingyi Liu, Dacheng Liu, Bo Yang, Jing Yan, Yuehua Pu, Jing Zhang, Miao Wen, Zhonghua Yang, Liping Liu
A total of two postpartum women with no noteworthy medical history presented with persistent headache. Brain magnetic resonance imaging (MRI) of both revealed extensive cerebral venous thrombosis, concurrently with abnormal signals of the splenium of the corpus callosum (SCC): The splenium appeared hyperintense on T2-weighted sequences, fluid-attenuated inversion recovery (FLAIR), and diffusion-weighted imaging (DWI) imaging, and hypointense on T1 sequences and apparent diffusion coefficient (ADC) map. The patients were given thrombolytic therapy...
December 2017: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29204033/white-matter-changes-in-corpus-callosum-in-a-patient-with-idiopathic-normal-pressure-hydrocephalus
#10
Naresh Mullaguri, Anusha Battineni, Christopher R Newey, Premkumar Nattanmai
Idiopathic normal pressure hydrocephalus (INPH) is characterized by the clinical triad of gait and cognitive dysfunction and urinary incontinence. Ventriculoperitoneal (VP) shunting is often required for treatment. Review of literature shows few case reports discussing benign magnetic resonance imaging (MRI) T2 hyperintense changes in the corpus callosum of NPH patients after shunting due to mechanical compression of the middle and posterior regions of the body against falx cerebri leading to ischemic demyelination...
October 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29202860/a-giant-popliteal-lipoblastoma-in-a-23-month-old-girl-a-case-report
#11
Shogo Hashimoto, Kazutaka Kikuta, Tetsuya Sekita, Robert Nakayama, Shinichiro Takayama, Aya Sasaki, Kaori Kameyama, Masaya Nakamura, Morio Matsumoto, Hideo Morioka
BACKGROUND: Lipoblastomas are rare benign tumors that arise from embryonic white fat and almost always occur in babies and children. Here, we report a case of a giant popliteal lipoblastoma in a 23-month-old Japanese girl that was successfully treated via complete resection. CASE PRESENTATION: Our patient was a 23-month-old Japanese girl. At 6 months of age, she presented at a nearby hospital with a mass on the popliteal side of her lower right leg. She had no symptoms and was diagnosed as having a benign adipose tumor via magnetic resonance imaging...
December 5, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29201474/globus-pallidus-internus-deep-brain-stimulation-for-disabling-diabetic-hemiballism-hemichorea
#12
Byung-Chul Son, Jin-Gyu Choi, Hak-Cheol Ko
Unilateral hemichorea/hemiballism (HH) associated with contralateral neuroimaging abnormalities of the basal ganglia, which is characterized by T1 hyperintensity on magnetic resonance imaging (MRI) and is secondary to diabetic nonketotic hyperglycemia, is a rare and unique complication of poorly controlled diabetes mellitus (DM). Although almost all prior reports have documented rapid resolution of HH within days after normalization of blood glucose levels, medically refractory persistent HH has been noted...
2017: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/29201326/a-challenging-entity-multiple-sclerosis-or-collagen-tissue-disorders-a-case-series-of-6-patients
#13
Raida Ben Salah, Yosra Cherif, Faten Frikha, Dammak Chifaa, Mouna Snoussi, Moez Jallouli, Sameh Marzouk, Mhiri Chokri, Zouhir Bahloul
Background: Multiple sclerosis and other demyelinating processes are sometimes difficult to differentiate from the neurological involvement in autoimmune diseases. Distinguishing multiple sclerosis from other lesions due to autoimmune diseases is crucial to avoid unsuitable or delayed treatments. Methods: Charts of 6 patients diagnosed with mimicking multiple sclerosis between 1996 and 2014 were retrospectively assessed. Results: The mean age at diagnosis was 35±7 years...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/29201222/contrast-enhanced-ultrasound-is-better-than-magnetic-resonance-imaging-in-evaluating-the-short-term-results-of-microwave-ablation-treatment-of-uterine-fibroids
#14
Yan Zhang, Meiwu Zhang, Xiaoxiang Fan, Dafeng Mao
Contrast-enhanced ultrasound (CEUS) and magnetic resonance imaging (MRI) were compared in evaluating the short-term effects of microwave ablation (MWA) on uterine fibroids. A total of 60 patients with uterine fibroids treated by MWA were enrolled in the experimental group during their two-year follow-up period according to the inclusion criteria. Conventional two-dimensional US, MRI and CEUS were performed to determine the volume reduction and the fibroid residue by displaying the size, echo and signal intensity of fibroids prior to and after MWA treatment...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29199507/asymmetric-oculomotor-apraxia-optic-ataxia-and-simultanagnosia-with-right-hemispatial-neglect-from-a-predominantly-left-sided-lesion-of-the-parieto-occipital-area
#15
Yasuhisa Sakurai, Masanori Fujimoto, Kensuke Hamada, Izumi Sugimoto
INTRODUCTION: Bálint's syndrome involves bilateral damage to the parieto-occipital area. The extent of the effect of unilateral damage on the Bálint's triad (oculomotor apraxia, optic ataxia, and simultanagnosia) remains unknown. METHODS: We examined a 63-year-old, right-handed woman who developed right hemianopia, oculomotor apraxia, optic ataxia, simultanagnosia, and hemispatial neglect (HSN) for the right after a cerebral infarction, with detailed neuropsychological tests, magnetic resonance imaging, and single photon emission computed tomography (SPECT)...
December 2, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/29197538/orbital-frontal-nerve-schwannoma-distinctive-radiological-features
#16
Stephanie Ming Young, Yoon-Duck Kim, Gang Seok Jeon, Kyung In Woo
PURPOSE: To review the radiological findings of frontal nerve schwannoma of the orbit and determine distinguishing imaging features. DESIGN: Retrospective interventional case series Methods: SETTING: Single tertiary institution. PERIOD: September 1996 to December 2016. PATIENT POPULATION: 13 patients orbital frontal nerve schwannoma. INTERVENTION: Patients underwent surgical excision following preoperative imaging...
November 29, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29193849/apparent-transverse-relaxation-r2%C3%A2-on-mri-as-a-method-to-differentiate-treatment-effect-pseudoprogression-versus-progressive-disease-in-chemoradiation-for-malignant-glioma
#17
Jean-Guy Belliveau, Glenn S Bauman, David Macdonald, Maria Macdonald, L Martyn Klassen, Ravi S Menon
INTRODUCTION: Pseudoprogression (psPD) is a transient post-treatment imaging change that is commonly seen when treating glioma with chemotherapy and radiation. The use of apparent transverse relaxation rate (R2∗), which is calculated from a contrast-free multi-echo gradient echo Magnetic Resonance Imaging (MRI) sequence, may allow for quantitative identification of patients with suspected psPD. METHODS: We acquired a multi-echo gradient echo sequence using a 3T-Siemens Prisma MRI...
November 30, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/29193629/relationship-between-the-severity-of-cerebral-white-matter-hyperintensities-and-sympathetic-nervous-activity-in-older-adults
#18
Toshimasa Obara, Kumiko Nagai, Shigeki Shibata, Ai Hirasawa, Hitomi Koshiba, Hiroshi Hasegawa, Takae Ebihara, Koichi Kozaki
AIM: White matter hyperintensities (WMH), visualized on brain magnetic resonance imaging, represent an abnormality related to the development of geriatric syndromes. Recently, it has been found that low sympathetic nervous activity might be associated with physical and cognitive dysfunction in older adults. Therefore, we investigated the relationship between the severity of cerebral WMH and sympathetic nervous activity, measured by the heart rate variability. METHODS: We carried out a cross-sectional study of 39 older patients...
November 28, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/29193034/hypermanganesemia-with-dystonia-polycythemia-and-cirrhosis-in-10-patients-six-novel-slc30a10-mutations-and-further-phenotype-delineation
#19
M S Zaki, M Y Issa, H M Elbendary, H El-Karaksy, H Hosny, C Ghobrial, A El Safty, A El-Hennawy, A Oraby, L Selim, M S Abdel-Hamid
Biallelic mutations in the SLC30A10 gene cause an inborn error of Mn metabolism characterized by hypermanganesemia, polycythemia, early-onset dystonia, and liver cirrhosis (HMDPC). To-date only 14 families from various ethnic groups have been reported. Here, we describe 10 patients from 7 unrelated Egyptian families with HMDPC. Markedly elevated blood Mn levels, the characteristic basal ganglia hyperintensity on T1W images, and variable degrees of extrapyramidal manifestations with or without liver disease were cardinal features in all patients...
November 28, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/29192947/-executive-functions-in-frontal-lob-syndrome-a-case-report
#20
Özge Metin, Ali Evren Tufan, Nagihan Cevher Binici, Özge Saraçlı, Adnan Atalay, Ayşegül Yolga Tahiroğlu
Prefrontal cortex in frontal lobe (FL) is the center of executive functions (EF). FL damage can lead to executive dysfunction by influencing frontal-subcortical circuits (dorsolateral, orbitofrontal, ventromedial). Damage to the dorsolateral prefrontal cortex (DLPFC) can lead to deterioration in EF, whereas damage to the orbitofrontal cortex (OFC) can lead to personality changes with the characteristic of disinhibition and irritability. In addition, damage to the anterior cingulate cortex/medial prefrontal cortex (ACC/MPFC) can result in decreased spontaneity...
2017: Türk Psikiyatri Dergisi, Turkish Journal of Psychiatry
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