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https://www.readbyqxmd.com/read/28102882/factors-associated-with-significant-mri-findings-in-medical-walk-in-patients-with-acute-headache
#1
Joris Budweg, Till Sprenger, Anthony De Vere-Tyndall, Anne Hagenkord, Christoph Stippich, Christoph T Berger
QUESTION: Acute headache is a main reason for emergency consultations and can be a symptom of dangerous neurological conditions. We hypothesised that in medical walk-in headache patients with low suspicion of intracranial bleeding significant findings in brain magnetic resonance imaging (MRI) are associated with clinical features. METHODS: Retrospective chart review on medical outpatient referrals for brain MRI (2010-2014) with the chief complaint "acute headache" (duration <4 weeks)...
January 19, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28102328/qualitative-and-quantitative-analysis-with-a-novel-shear-wave-speed-imaging-for-differential-diagnosis-of-breast-lesions
#2
Yu-Ping Yang, Xiao-Hong Xu, Le-Hang Guo, Ya-Ping He, Dan Wang, Bo-Ji Liu, Chong-Ke Zhao, Bao-Ding Chen, Hui-Xiong Xu
To evaluate the diagnostic performance of a new two-dimensional shear wave speed (SWS) imaging (i.e. Toshiba shear wave elastography, T-SWE) in differential diagnosis of breast lesions. 225 pathologically confirmed breast lesions in 218 patients were subject to conventional ultrasound and T-SWE examinations. The mean, standard deviation and ratio of SWS values (m/s) and elastic modulus (KPa) on T-SWE were computed. Besides, the 2D elastic images were classified into four color patterns. The area under the receiver operating characteristic (AUROC) curve analysis was performed to evaluate the diagnostic performance of T-SWE in differentiation of breast lesions...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101340/pseudo-continuous-arterial-spin-labeling-imaging-of-cerebral-blood-perfusion-asymmetry-in-drug-na%C3%A3-ve-patients-with-first-episode-major-depression
#3
Guangdong Chen, Haiman Bian, Deguo Jiang, Mingwei Cui, Shengzhang Ji, Mei Liu, Xu Lang, Chuanjun Zhuo
Many previous studies have reported that regional cerebral blood flow (rCBF) aberrations may be one of the pathological characteristics of depression and rCBF has demonstrated a certain degree of asymmetry. However, studies investigating the cerebral blood perfusion asymmetry changes of drug-naïve patients experiencing their first episode of major depression using pseudo-continuous arterial spin labeling (pCASL) are rare. Ten drug-naïve patients experiencing their first major depression episode and 15 healthy volunteers were enrolled in the current study...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28100683/impact-of-microscopic-orbital-periosteum-invasion-in-orbital-preservation-surgery
#4
Kenya Kobayashi, Taisuke Mori, Fumihiko Matsumoto, Naoya Murakami, Masanori Teshima, Masahiko Fukasawa, Yoshifumi Matsumoto, Satoko Matsumura, Jun Itami, Masahiro Asai, Seiichi Yoshimoto
OBJECTIVE: The orbital periosteum is considered to be a barrier to tumor spread; however, it is difficult to evaluate microscopic tumor spread during surgery. This study aimed to assess the impact of pathological status in orbital preservation surgery. METHODS: We retrospectively analyzed the 3-year local control rate and treatment outcomes of patients with malignant tumors invading the orbit who were treated between 2006 and 2012. RESULTS: In total, 27 patients were reviewed over a median follow-up period of 36 months...
January 17, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28097437/two-and-three-dimensional-topographic-analysis-of-pathologically-myopic-eyes-with-dome-shaped-macula-and-inferior-staphyloma-by-spectral-domain-optical-coherence-tomography
#5
Antonio García-Ben, Radua Kamal-Salah, Ignacio García-Basterra, Ana Gonzalez Gómez, María José Morillo Sanchez, Jose Manuel García-Campos
PURPOSE: To investigate the posterior anatomical structure of pathologically myopic eyes with dome-shaped macula and inferior staphyloma using spectral domain optical coherence tomography (SD-OCT). METHODS: Our database of 260 pathologically myopic eyes was analyzed retrospectively to identify patients with dome-shaped macula and inferior staphyloma. All patients underwent vertical and horizontal SD-OCT scans across the central fovea, with three-dimensional macular map reconstruction...
January 17, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28097263/predicting-biochemical-recurrence-in-patients-with-high-risk-prostate-cancer-using-the-apparent-diffusion-coefficient-of-magnetic-resonance-imaging
#6
Min Young Yoon, Juhyun Park, Jeong Yeon Cho, Chang Wook Jeong, Ja Hyeon Ku, Hyeon Hoe Kim, Cheol Kwak
PURPOSE: We aimed to investigate whether the apparent diffusion coefficient (ADC) value in diffusion-weighted magnetic resonance imaging predicts the prognoses of patients with high-risk prostate cancer. MATERIALS AND METHODS: A total of 157 patients with high-risk prostate cancer (based on D'Amico's criteria) were included in the analysis. Patients underwent preoperative 3.0 Tesla magnetic resonance imaging within 2 months before radical prostatectomy. Those who received neoadjuvant hormone therapy (33 persons) or radiation therapy (18 persons) were excluded...
January 2017: Investigative and Clinical Urology
https://www.readbyqxmd.com/read/28096922/relationship-between-gleason-score-and-apparent-diffusion-coefficients-of-diffusion-weighted-magnetic-resonance-imaging-in-prostate-cancer-patients
#7
Tae Heon Kim, Chan Kyo Kim, Byung Kwan Park, Hwang Gyun Jeon, Byung Chang Jeong, Seong Il Seo, Hyun Moo Lee, Han Yong Choi, Seong Soo Jeon
INTRODUCTION: We assessed the correlation between the apparent diffusion coefficient (ADC) and pathological Gleason score (GS) of prostate cancer patients. METHODS: A total of 125 patients who underwent multiparametric magnetic resonance imaging before radical prostatectomy for prostate cancer were included in this study. ADC values were compared with different GS. We used receiver operating characteristic analysis and determined the ADC cutoff value to differentiate tumours with a GS of 6 from those with a GS ≥7...
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28096732/estimation-of-t2-relaxation-time-of-breast-cancer-correlation-with-clinical-imaging-and-pathological-features
#8
Mirinae Seo, Jung Kyu Ryu, Geon-Ho Jahng, Yu-Mee Sohn, Sun Jung Rhee, Jang-Hoon Oh, Kyu-Yeoun Won
OBJECTIVE: The purpose of this study was to estimate the T2* relaxation time in breast cancer, and to evaluate the association between the T2* value with clinical-imaging-pathological features of breast cancer. MATERIALS AND METHODS: Between January 2011 and July 2013, 107 consecutive women with 107 breast cancers underwent multi-echo T2*-weighted imaging on a 3T clinical magnetic resonance imaging system. The Student's t test and one-way analysis of variance were used to compare the T2* values of cancer for different groups, based on the clinical-imaging-pathological features...
January 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28095493/thoracic-temporal-subtraction-three-dimensional-computed-tomography-3d-ct-screening-for-vertebral-metastases-of-primary-lung-cancers
#9
Shingo Iwano, Rintaro Ito, Hiroyasu Umakoshi, Takatoshi Karino, Tsutomu Inoue, Yuanzhong Li, Shinji Naganawa
PURPOSE: We developed an original, computer-aided diagnosis (CAD) software that subtracts the initial thoracic vertebral three-dimensional computed tomography (3D-CT) image from the follow-up 3D-CT image. The aim of this study was to investigate the efficacy of this CAD software during screening for vertebral metastases on follow-up CT images of primary lung cancer patients. MATERIALS AND METHODS: The interpretation experiment included 30 sets of follow-up CT scans in primary lung cancer patients and was performed by two readers (readers A and B), who each had 2...
2017: PloS One
https://www.readbyqxmd.com/read/28094214/primary-intraosseous-adenoid-cystic-carcinoma-of-the-mandible-a-comprehensive-review-and-analysis-of-four-new-cases-with-emphasis-on-morphologic-immunophenotypic-and-molecular-characteristics
#10
Jing Han, Ting Gu, Xi Yang, Longwei Hu, Ronghui Xia, Zhen Tian, Jiang Li, Ling Zhu, Liqun Xu, Chunye Zhang
OBJECTIVE: To comprehensively review the clinical manifestations, imaging, diagnosis, treatment, and pathologic features of primary intraosseous adenoid cystic carcinoma (PIACC) of the mandible and analyze PIACC histopathology and molecular features in four cases. STUDY DESIGN: We reviewed the literature and retrospectively studied four cases of PIACC. RESULTS: The clinical and imaging findings of PIACC are similar to other malignant or borderline-malignant mandible tumors...
November 11, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28092414/dce-mri-of-the-prostate-using-shutter-speed-vs-tofts-model-for-tumor-characterization-and-assessment-of-aggressiveness
#11
Stefanie J Hectors, Cecilia Besa, Mathilde Wagner, Guido H Jajamovich, George K Haines, Sara Lewis, Ashutosh Tewari, Ardeshir Rastinehad, Wei Huang, Bachir Taouli
PURPOSE: To quantify Tofts model (TM) and shutter-speed model (SSM) perfusion parameters in prostate cancer (PCa) and noncancerous peripheral zone (PZ) and to compare the diagnostic performance of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) to Prostate Imaging and Reporting and Data System (PI-RADS) classification for the assessment of PCa aggressiveness. MATERIALS AND METHODS: Fifty PCa patients (mean age 60 years old) who underwent MRI at 3...
January 16, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28092022/relevance-of-neuroimaging-for-neurocognitive-and-behavioral-outcome-after-pediatric-traumatic-brain-injury
#12
Marsh Königs, Petra Jw Pouwels, L W Ernest van Heurn, Roel Bakx, R Jeroen Vermeulen, J Carel Goslings, Bwee Tien Poll-The, Marleen van der Wees, Coriene E Catsman-Berrevoets, Jaap Oosterlaan
This study aims to (1) investigate the neuropathology of mild to severe pediatric TBI and (2) elucidate the predictive value of conventional and innovative neuroimaging for functional outcome. Children aged 8-14 years with trauma control (TC) injury (n = 27) were compared to children with mild TBI and risk factors for complicated TBI (mild(RF+), n = 20) or moderate/severe TBI (n = 17) at 2.8 years post-injury. Neuroimaging measures included: acute computed tomography (CT), volumetric analysis on post-acute conventional T1-weighted magnetic resonance imaging (MRI) and post-acute diffusion tensor imaging (DTI, analyzed using tract-based spatial statistics and voxel-wise regression)...
January 14, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28091980/comparison-of-tc-99m-maraciclatide-and-tc-99m-sestamibi-molecular-breast-imaging-in-patients-with-suspected-breast-cancer
#13
Michael K O'Connor, Melissa M B Morrow, Katie N Hunt, Judy C Boughey, Dietlind L Wahner-Roedler, Amy Lynn Conners, Deborah J Rhodes, Carrie B Hruska
BACKGROUND: Molecular breast imaging (MBI) performed with (99m)Tc sestamibi has been shown to be a valuable technique for the detection of breast cancer. Alternative radiotracers such as (99m)Tc maraciclatide may offer improved uptake in breast lesions. The purpose of this study was to compare relative performance of (99m)Tc sestamibi and (99m)Tc maraciclatide in patients with suspected breast cancer, using a high-resolution dedicated gamma camera for MBI. Women with breast lesions suspicious for malignancy were recruited to undergo two MBI examinations-one with (99m)Tc sestamibi and one with (99m)Tc maraciclatide...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28091744/prediction-of-pancreatic-fistula-after-distal-pancreatectomy-based-on-cross-sectional-images
#14
Ye Rim Chang, Jae Seung Kang, Jin-Young Jang, Woo Hyun Jung, Mee Joo Kang, Kyung Bun Lee, Sun-Whe Kim
BACKGROUND: Postoperative pancreatic fistula (POPF) is one of the most common and clinically relevant complications after distal pancreatectomy (DP), occurring in 5-40% of patients. Determining risk factors for this complication may aid in its prevention. This study sought to predict the development of POPF after DP preoperatively and objectively based on radiologic findings. METHODS: This study included 60 patients who underwent DP using a stapler for pancreatic division between June 2011 and January 2013...
January 13, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28090447/quantitative-sodium-magnetic-resonance-imaging-of-cartilage-muscle-and-tendon
#15
REVIEW
Neal K Bangerter, Grayson J Tarbox, Meredith D Taylor, Joshua D Kaggie
Sodium magnetic resonance imaging (MRI), or imaging of the 23Na nucleus, has been under exploration for several decades, and holds promise for potentially revealing additional biochemical information about the health of tissues that cannot currently be obtained from conventional hydrogen (or proton) MRI. This additional information could serve as an important complement to conventional MRI for many applications. However, despite these exciting possibilities, sodium MRI is not yet used routinely in clinical practice, and will likely remain strictly in the domain of exploratory research for the coming decade...
December 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28089812/clinical-manifestations-and-outcomes-in-surgically-managed-gartner-duct-cysts-1
#16
Adela G Cope, Shannon Laughlin-Tommaso, Abimbola Famuyide, John B Gebhart, Matthew R Hopkins, Daniel M Breitkopf
STUDY OBJECTIVE: Gartner duct cysts (GDC) are rare embryological remnants of the mesonephric duct with the majority of cases discovered incidentally in asymptomatic patients. The largest prior published series evaluating surgical management of GDC included 4 patients. The present study aims to determine the manifestations and outcomes of surgically managed patients with GDC with important implications for surveillance, monitoring, and management of patients. DESIGN: Retrospective chart review DESIGN: Classification: Canadian Task Force Classification III SETTING: Tertiary care center PATIENTS: All women diagnosed with GDC from 1/1994-4/2014 at our institution were identified...
January 12, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28089690/mri-evaluation-of-rectal-cancer-staging-and-restaging
#17
REVIEW
Courtney C Moreno, Patrick S Sullivan, Pardeep K Mittal
Magnetic resonance imaging (MRI) plays an important role in the staging and restaging of rectal cancer. Multiplanar high-resolution (≤3-mm section thickness) T2-weighted images are the primary sequences used for rectal cancer staging. No preprocedural bowel cleansing regimen, intravenous contrast material, nor endorectal coil is necessary. MRI is highly accurate for differentiating T1-T2 disease from T3 and T4 disease, an important distinction as patients with T3 and T4 tumors typically undergo preoperative neoadjuvant chemoradiation before resection...
November 21, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28088625/absence-of-dj-1-causes-age-related-retinal-abnormalities-in-association-with-increased-oxidative-stress
#18
Vera L Bonilha, Brent A Bell, Mary E Rayborn, Ivy S Samuels, Anna King, Joe G Hollyfield, Chengsong Xie, Huaibin Cai
Oxidative stress alters physiological function in most biological tissues and can lead to cell death. In the retina, oxidative stress initiates a cascade of events leading to focal loss of RPE and photoreceptors, which is thought to be a major contributing factor to geographic atrophy. Despite these implications, the molecular regulation of RPE oxidative stress under normal and pathological conditions remains largely unknown. A better understanding of the mechanisms involved in regulating RPE and photoreceptors oxidative stress response is greatly needed...
January 11, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28079398/feasibility-evaluation-of-diffusion-weighted-imaging-using-an-integrated-mri-radiotherapy-system-for-response-assessment-to-neoadjuvant-therapy-in-rectal-cancer
#19
Narek Shaverdian, Yingli Yang, Peng Hu, Steven Hart, Ke Sheng, James Lamb, Minsong Cao, Nzhde Agazaryan, David Thomas, Michael Steinberg, Daniel A Low, Percy Lee
OBJECTIVES: To evaluate the feasibility of on-board DWI with an integrated low-field MRI-radiotherapy system to assess responses to neoadjuvant chemoradiation (NAC) in rectal cancer. METHODS: A spin echo-based planar imaging diffusion sequence on a 0.35 T MRI-radiotherapy system was acquired over the course of NAC. The apparent diffusion coefficients (ADC) from the tumor region of interest (ROIs) were calculated. A functional diffusion map (fDM) was created showing a pixel-wise ADC analysis of the ROI over the course of treatment...
January 12, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28079289/apocrine-metaplasia-found-at-mr-biopsy-is-there-something-to-be-learned
#20
Yiming Gao, Vandana Dialani, Carolynn DeBenedectis, Nicole Johnson, Elena Brachtel, Priscilla Slanetz
The purpose of this study was to determine (a) the frequency of apocrine metaplasia (ApoM) found on MR core biopsy of suspicious findings, and (b) to determine if there are specific MR imaging features that might obviate the need for biopsy. This HIPAA-compliant retrospective study was performed under IRB exemption for quality assurance studies. Patient demographics, MR imaging features, and pathology were reviewed. Breast lesions which underwent MR-guided biopsy, yielding ApoM on pathology analysis were included...
January 12, 2017: Breast Journal
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