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https://www.readbyqxmd.com/read/29793212/should-we-excise-are-there-any-clinical-or-histologic-features-that-predict-upgrade-in-papillomas-incidental-or-non-incidental
#1
Michael Zaleski, Yun An Chen, Alison L Chetlen, Julie Mack, Liyan Xu, Daleela G Dodge, Dipti M Karamchandani
The clinical decision to excise intraductal papilloma (IDP) without atypia diagnosed on biopsy remains controversial. We sought to establish clinical and histologic predictors (if any) which may predict upgrade in IDP. 296 biopsies (in 278 women) with histologic diagnosis of IDP without atypia were retrospectively identified and placed into Incidental (no corresponding imaging correlate), or Non-incidental (positive imaging correlate) groups. 253/296 (85.5%) cases were non-incidental, and 43/296 (14.5%) were incidental...
May 11, 2018: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29793187/stapp-spatiotemporal-analysis-of-plantar-pressure-measurements-using-statistical-parametric-mapping
#2
Brian G Booth, Noël L W Keijsers, Jan Sijbers, Toon Huysmans
BACKGROUND: Pedobarography produces large sets of plantar pressure samples that are routinely subsampled (e.g. using regions of interest) or aggregated (e.g. center of pressure trajectories, peak pressure images) in order to simplify statistical analysis and provide intuitive clinical measures. RESEARCH QUESTION: We hypothesize that these data reductions discard gait information that can be used to differentiate between groups or conditions. METHODS: To test the hypothesis of null information loss, we created an implementation of statistical parametric mapping (SPM) for dynamic plantar pressure datasets (i...
May 3, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29793125/assessment-of-cam-morphology-of-the-hip-with-ultra-sound-imaging-by-physical-therapists-is-reliable-and-valid
#3
Liliane Mandema, Igor Tak, Brigitte Mooij, Ruud Groeneweg, Eric Bakker, Peter van Veldhoven
BACKGROUND: Femoroacetabular impingement syndrome is considered present when a combination of clinical symptoms, signs and morphological features of the hip co-exist. Imaging is increasingly popular in primary health care settings with physical therapists performing ultrasound (US). OBJECTIVE: The aim of this study was to assess the diagnostic accuracy and inter-rater reliability of ultrasound in determining presence of cam morphology. DESIGN: A concurrent validity and inter-rater reliability study...
April 14, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29793116/patterns-of-invasive-growth-in-malignant-gliomas-the-hippocampus-emerges-as-an-invasion-spared-brain-region
#4
Awais A Mughal, Lili Zhang, Artem Fayzullin, Andres Server, Yuping Li, Yingxi Wu, Rainer Glass, Torstein Meling, Iver A Langmoen, Trygve B Leergaard, Einar O Vik-Mo
BACKGROUND: Widespread infiltration of tumor cells into surrounding brain parenchyma is a hallmark of malignant gliomas, but little data exist on the overall invasion pattern of tumor cells throughout the brain. METHODS: We have studied the invasive phenotype of malignant gliomas in two invasive mouse models and patients. Tumor invasion patterns were characterized in a patient-derived xenograft mouse model using brain-wide histological analysis and magnetic resonance (MR) imaging...
May 21, 2018: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/29793112/3d-printed-membrane-as-an-alternative-to-amniotic-membrane-for-ocular-surface-conjunctival-defect-reconstruction-an-in-vitro-in-vivo-study
#5
Shima Dehghani, Morteza Rasoulianboroujeni, Hamed Ghasemi, Saeed Heidari Keshel, Zohreh Nozarian, Mohammad Naser Hashemian, Mehran Zarei-Ghanavati, Golshan Latifi, Reza Ghaffari, Zhanfeng Cui, Hua Ye, Lobat Tayebi
BACKGROUND: The aim of this study was to evaluate the surgical handling and clinical applicability of a specific 3D-printed membrane design fabricated using a gelatin, elastin and sodium hyaluronate blend for conjunctival reconstruction and compare it with amniotic membrane (AM), which is normally used in such surgeries. METHODS: 3D printing technique was employed to fabricate the membrane based on gradient design. Prior to printing, rheometry was employed to optimize the ink composition...
May 11, 2018: Biomaterials
https://www.readbyqxmd.com/read/29793097/quantitative-assessment-of-placental-perfusion-by-three-dimensional-power-doppler-ultrasound-for-twins-with-selective-intrauterine-growth-restriction-in-one-twin
#6
Wei Sun, Jingyi Liu, Ying Zhang, Ailu Cai, Zeyu Yang, Yili Zhao, Yu Wang, Zhe Cao, Qiuju Wei
OBJECTIVE: We quantitatively assessed placental perfusion using three-dimensional (3D) power Doppler ultrasound for twins with selective intrauterine growth restriction (sIUGR) in one twin. STUDY DESIGN: A prospective cross-sectional study was performed for 104 normal monochorionic diamniotic twins and 30 twins with sIUGR. Twins with sIUGR were divided into two groups: in group I (19 twins), both fetuses had continuous forward end-diastolic blood flow in the umbilical artery; in group II (11 twins), the smaller fetus had a loss or a reverse end-diastolic blood flow in the umbilical artery, but the larger fetus had continuous forward end-diastolic blood flow...
May 17, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29793096/segmentation-of-histological-images-and-fibrosis-identification-with-a-convolutional-neural-network
#7
Xiaohang Fu, Tong Liu, Zhaohan Xiong, Bruce H Smaill, Martin K Stiles, Jichao Zhao
Segmentation of histological images is one of the most crucial tasks for many biomedical analyses involving quantification of certain tissue types, such as fibrosis via Masson's trichrome staining. However, challenges are posed by the high variability and complexity of structural features in such images, in addition to imaging artifacts. Further, the conventional approach of manual thresholding is labor-intensive, and highly sensitive to inter- and intra-image intensity variations. An accurate and robust automated segmentation method is of high interest...
May 16, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29793063/progressive-right-ventricular-enlargement-due-to-pulmonary-regurgitation-clinical-characteristics-of-a-low-risk-group
#8
Majd A El-Harasis, Heidi M Connolly, William R Miranda, Muhammad Y Qureshi, Nandini Sharma, Mohamad Al-Otaibi, Christopher V DeSimone, Alexander Egbe
BACKGROUND: The optimal interval between serial cardiac magnetic resonance imaging (CMRI) scans for monitoring right ventricular (RV) enlargement in the setting of severe pulmonic valve regurgitation (PR) is unknown. The purposes of this study were to (1) determine the annual change in RV volume on serial CMRI scans and (2) identify the risk factors for rapid progression of RV enlargement. METHODS: A retrospective study of adults with postintervention native valve PR and ≥2 CMRI scans at Mayo Clinic Rochester from 2000 to 2015 was conducted...
April 26, 2018: American Heart Journal
https://www.readbyqxmd.com/read/29793062/functional-mri-of-brain-physiology-in-aging-and-neurodegenerative-diseases
#9
J Jean Chen
Brain aging and associated neurodegeneration constitute a major societal challenge as well as one for the neuroimaging community. A full understanding of the physiological mechanisms underlying neurodegeneration still eludes medical researchers, fuelling the development of in vivo neuroimaging markers. Hence it is increasingly recognized that our understanding of neurodegenerative processes likely will depend upon the available information provided by imaging techniques. At the same time, the imaging techniques are often developed in response to the desire to observe certain physiological processes...
May 21, 2018: NeuroImage
https://www.readbyqxmd.com/read/29793060/a-computational-framework-for-the-detection-of-subcortical-brain-dysmaturation-in-neonatal-mri-using-3d-convolutional-neural-networks
#10
Rafael Ceschin, Alexandria Zahner, William Reynolds, Jenna Gaesser, Giulio Zuccoli, Cecilia W Lo, Vanathi Gopalakrishnan, Ashok Panigrahy
Deep neural networks are increasingly being used in both supervised learning for classification tasks and unsupervised learning to derive complex patterns from the input data. However, the successful implementation of deep neural networks using neuroimaging datasets requires adequate sample size for training and well-defined signal intensity based structural differentiation. There is a lack of effective automated diagnostic tools for the reliable detection of brain dysmaturation in the neonatal period, related to small sample size and complex undifferentiated brain structures, despite both translational research and clinical importance...
May 21, 2018: NeuroImage
https://www.readbyqxmd.com/read/29793015/right-atrial-anomalous-muscle-bundle-presenting-with-acute-superior-vena-cava-syndrome-and-pulmonary-embolism-surgical-management
#11
Jeko M Madjarov, Michael G Katz, Sophia Madjarova, Svetozar Madzharov, Frank R Arko, David W Miller, Francis Robicsek
BACKGROUND: An anomalous muscle bundle crossing the right atrial cavity represents a pathological finding with unproved clinical significance. This congenital anomaly may be difficult to recognize via echocardiography and could be confused with other intra-cavitary lesions. METHODS: We report a case of a 53-year-old female presented to the cardio-vascular service with acute superior vena cava syndrome and sub-massive pulmonary embolism. RESULTS: The patient underwent venography confirming superior vena cava stenosis...
May 21, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29792748/portal-vein-thrombosis-imaging-the-spectrum-of-disease-with-an-emphasis-on-mri-features
#12
Reena C Jha, Satinderpal Singh Khera, Amit Dinesh Kalaria
OBJECTIVE: The purpose of this article is to review the classic and uncommon imaging findings of portal vein thrombosis (PVT) (acute, chronic, congenital, and septic thrombus) as visualized on multiple modalities, with an emphasis on MRI findings. Additional aims are to understand the imaging of obliterative portal venopathy and its clinical significance, appreciate morphologic changes of the biliary system that may accompany PVT, and recognize changes in liver enhancement patterns seen with PVT related to the hepatic arterial buffer response...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29792744/journal-club-extracolonic-findings-at-ct-colonography-systematic-review-and-meta-analysis
#13
Perry J Pickhardt, Loredana Correale, Lia Morra, Daniele Regge, Cesare Hassan
OBJECTIVE: The purpose of this study was to perform a systematic review and meta-analysis of published studies on CT colonography (CTC) in which extracolonic findings were assessed. MATERIALS AND METHODS: A systematic review of studies of screening CTC and of CTC to evaluate symptoms (1994-June 2017) was conducted to estimate the rate of extra-colonic findings and associated additional workup recommendations. The primary outcome was potentially important extracolonic findings, defined as CT Colonography Imaging Reporting and Data System (C-RADS) category E4 or as having high clinical importance (if C-RADS was not used)...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29792741/mesenchymal-lesions-of-the-breast-what-radiologists-need-to-know
#14
Debra S Whorms, Michael D C Fishman, Priscilla J Slanetz
OBJECTIVE: Mesenchymal breast tumors originate from the various components of mammary stroma. The aim of this review is to discuss the clinical presentation, imaging appearance, and management of mesenchymal breast lesions. CONCLUSION: Although many mesenchymal tumors exhibit characteristic findings on imaging, others show nonspecific characteristics and require tissue biopsy for diagnosis. An awareness of the clinical and imaging presentation is essential in guiding the differential diagnosis and patient management...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29792740/colloid-adenocarcinoma-of-the-lung-ct-and-pet-ct-findings-in-seven-patients
#15
Han Kyul Kim, Joungho Han, Teri J Franks, Kyung Soo Lee, Tae Jung Kim, Joon Young Choi, Jaeil Zo
OBJECTIVE: We aimed to assess CT and 18 F-FDG PET/CT findings of colloid adenocarcinoma of the lung in seven patients. MATERIALS AND METHODS: From 2010 to 2017, seven patients with surgically proven colloid adenocarcinoma of the lung were identified. CT (both enhanced and unenhanced) and PET/CT findings were analyzed, and the imaging features were compared with histopathologic reports. Clinical and demographic features were also analyzed. RESULTS: In all cases except one, tumors showed low attenuation on unenhanced CT scans, ranging in attenuation from -16...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29792739/x-ray-phase-contrast-technology-in-breast-imaging-principles-options-and-clinical-application
#16
Seyedamir Tavakoli Taba, Timur E Gureyev, Maram Alakhras, Sarah Lewis, Darren Lockie, Patrick C Brennan
OBJECTIVE: The purpose of this article is to review different x-ray phase-contrast breast imaging techniques and their potential application in clinical settings. CONCLUSION: Phase-contrast imaging depicts not only the absorption contrast but also the refraction contrast of the transmitted x-ray beam. Early data suggest that this new modality may overcome some of the diagnostic limitations associated with current clinically available mammography systems and that it has potential for improving breast cancer detection...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29792727/added-value-of-including-entire-brain-on-body-imaging-with-fdg-pet-mri
#17
Ana M Franceschi, Robert Matthews, Lev Bangiyev, Nand Relan, Ammar Chaudhry, Dinko Franceschi
OBJECTIVE: FDG PET/MRI examination of the body is routinely performed from the skull base to the mid thigh. Many types of brain abnormalities potentially could be detected on PET/MRI if the head was included. The objective of this study was therefore to identify and characterize brain findings incidentally detected on PET/MRI of the body with the head included. MATERIALS AND METHODS: We retrospectively identified 269 patients with FDG PET/MRI whole-body scans that included the head...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29792725/novel-breast-imaging-and-machine-learning-predicting-breast-lesion-malignancy-at-cone-beam-ct-using-machine-learning-techniques
#18
Johannes Uhlig, Annemarie Uhlig, Meike Kunze, Tim Beissbarth, Uwe Fischer, Joachim Lotz, Susanne Wienbeck
OBJECTIVE: The purpose of this study is to evaluate the diagnostic performance of machine learning techniques for malignancy prediction at breast cone-beam CT (CBCT) and to compare them to human readers. SUBJECTS AND METHODS: Five machine learning techniques, including random forests, back propagation neural networks (BPN), extreme learning machines, support vector machines, and K-nearest neighbors, were used to train diagnostic models on a clinical breast CBCT dataset with internal validation by repeated 10-fold cross-validation...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29792535/does-the-poly-adp-ribose-polymerase-inhibitor-veliparib-merit-further-study-for-cancer-associated-weight-loss-observations-and-conclusions-from-60-prospectively-treated-patients
#19
Jason D Doles, Kelly A Hogan, Jennifer O'Connor, Andrea E Wahner Hendrickson, Olivia Huston, Aminah Jatoi
BACKGROUND: More than 80% of patients with advanced cancer develop weight loss. Because preclinical data suggest poly (ADP-ribose) polymerase (PARP) inhibitors can treat this weight loss, this study was undertaken to explore the PARP inhibitor veliparib for this indication. OBJECTIVE: The current study was undertaken to analyze prospectively gathered data on weight in cancer patients on PARP inhibitors. DESIGN/SETTING: The current study relied on a previously published, prospectively conducted phase 1 single institution trial that combined veliparib and topotecan (NCT01012817) as antineoplastic therapy for advanced cancer patients...
May 24, 2018: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/29792345/dysembryoplastic-neuroepithelial-tumours-clinical-radiological-pathological-features-and-outcome
#20
Cihan Isler, Ozdem Erturk Cetin, Doga Ugurlar, Cigdem Ozkara, Nil Comunoglu, Osman Kizilkilic, Buge Oz, Yasemin Kayadibi, Taner Tanriverdi, Mustafa Uzan
OBJECT: To analyse the clinical, imaging and histopathological data of patients who were diagnosed to have Dysembrioplastic Neuroepithelial Tumour (DNET) and underwent surgery between 1995-2015. MATERIALS AND METHODS: Age at seizure onset, age at surgery, gender, disease duration, seizure outcome of 44 patients were analysed together with Magnetic Resonance Imaging (MRI) of 21 patients. MRI types were classified as type 1 (cystic/polycystic-like, well-delineated, strongly hypointense T1), type 2 (nodularlike,heterogeneous), type 3 (dysplastic-like, iso/hyposignal T1, poor delineation, gray-white matter blurring)...
May 24, 2018: British Journal of Neurosurgery
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