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https://www.readbyqxmd.com/read/28226399/wavelet-based-scaling-indices-for-breast-cancer-diagnostics
#1
T Roberts, M Newell, W Auffermann, B Vidakovic
Mammography is routinely used to screen for breast cancer. However, the radiological interpretation of mammogram images is complicated by the heterogeneous nature of normal breast tissue and the fact that cancers are often of the same radiographic density as normal tissue. In this work, we use wavelets to quantify spectral slopes of breast cancer cases and controls and demonstrate their value in classifying images. In addition, we propose asymmetry statistics to be used in forming features, which improve the classification result...
February 22, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28226030/a-novel-model-to-estimate-lymph-node-metastasis-in-endometrial-cancer-patients
#2
Cristina Anton, Alexandre Silva E Silva, Edmund Chada Baracat, Nasuh Utku Dogan, Christhardt Köhler, Jesus Paula Carvalho, Giovanni Mastrantonio di Favero
OBJECTIVES: To evaluate the postoperative pathological characteristics of hysterectomy specimens, preoperative cancer antigen (CA)-125 levels and imaging modalities in patients with endometrial cancer and to build a risk matrix model to identify and recruit patients for retroperitoneal lymphadenectomy. METHODS: A total of 405 patients undergoing surgical treatment for endometrial cancer were retrospectively reviewed and analyzed. Clinical (age and body mass index), laboratory (CA-125), radiological (lymph node evaluation), and pathological (tumour size, grade, lymphovascular space invasion, lymph node metastasis, and myometrial invasion) parameters were used to test the ability to predict lymph node metastasis...
January 1, 2017: Clinics
https://www.readbyqxmd.com/read/28224297/fracture-reduction-by-postoperative-mobilisation-for-the-treatment-of-hyperextension-injuries-of-the-thoracolumbar-spine-in-patients-with-ankylosing-spinal-disorders
#3
Richard A Lindtner, Christian Kammerlander, Michael Goetzen, Alexander Keiler, Davud Malekzadeh, Dietmar Krappinger, Rene Schmid
INTRODUCTION: The aim of this study was to evaluate results of surgical stabilisation of hyperextension injuries of the thoracolumbar spine in patients with ankylosing spinal disorders using two different treatment strategies: the conventional open rigid posterior instrumentation and percutaneous less rigid posterior instrumentation. Surgical and non-surgical complications, the postoperative radiological course, and clinical outcome at final follow-up were comparatively assessed. Moreover, we sought to discuss important biomechanical and surgical aspects specific to posterior instrumentation of the ankylosed thoracolumbar spine as well as to elaborate on the advantages and limitations of the proposed new treatment strategy involving percutaneous less rigid stabilisation and fracture reduction by postoperative mobilisation...
February 21, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28223154/idiopathic-and-systemic-sclerosis-associated-pulmonary-arterial-hypertension-a-comparison-of-demographic-haemodynamic-and-magnetic-resonance-imaging-characteristics-and-outcomes
#4
Sheila Ramjug, Nehal Hussain, Judith Hurdman, Catherine Billings, Athanasios Charampopoulos, Charlie A Elliot, David G Kiely, Ian Sabroe, Smitha Rajaram, Andrew J Swift, Robin Condliffe
BACKGROUND: Previous studies have identified survival in systemic sclerosis (SSc)-associated pulmonary arterial hypertension (SSc-PAH) to be worse than in idiopathic pulmonary arterial hypertension (IPAH). We investigated differences between these conditions by comparing demographic, haemodynamic and radiological characteristics and outcomes in a large cohort of incident patients. METHODS: 651 patients diagnosed with IPAH or SSc-associated pre-capillary pulmonary hypertension were included...
February 18, 2017: Chest
https://www.readbyqxmd.com/read/28223112/understanding-and-applying-the-concept-of-value-creation-in-radiology
#5
David B Larson, Daniel J Durand, Daniel S Siegal
The concept of value in radiology has been strongly advocated in recent years as a means of advancing patient care and decreasing waste. This article explores the concept of value creation in radiology and offers a framework for how radiology practices can create value according to the needs of their referring clinicians. Value only exists in the eyes of a customer. We propose that the primary purpose of diagnostic radiology is to answer clinical questions using medical imaging to help guide management of patient care...
February 17, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28221097/supplemental-breast-mr-imaging-screening-of-women-with-average-risk-of-breast-cancer
#6
Christiane K Kuhl, Kevin Strobel, Heribert Bieling, Claudia Leutner, Hans H Schild, Simone Schrading
Purpose To investigate the utility and accuracy of breast magnetic resonance (MR) imaging as a supplemental screening tool in women at average risk for breast cancer and to investigate the types of cancer detected with MR imaging screening. Materials and Methods This prospective observational study was conducted at two academic breast centers in women aged 40-70 years without breast cancer-associated risk factors (lifetime risk <15%). Between January 2005 and December 2013, women with at least minimal residual breast tissue (American College of Radiology categories A-D) and normal conventional imaging findings (screening mammography with or without screening ultrasonography [US]) were invited to undergo supplemental MR imaging screening...
February 21, 2017: Radiology
https://www.readbyqxmd.com/read/28219077/radiopathological-features-and-identification-of-mycobacterial-infections-in-granulomatous-nodules-resected-from-the-lung
#7
Yumi Sakakibara, Yoshimi Suzuki, Toshihide Fujie, Takumi Akashi, Tadatsune Iida, Yasunari Miyazaki, Yoshinobu Eishi, Naohiko Inase
BACKGROUND: Pulmonary granulomas are sometimes resected because they resemble lung cancer and false-positive findings come through from positron emission tomography (PET) using 18fluorine-fluorodeoxyglucose (18F-FDG). Mycobacterial infection is a common cause of granulomas. OBJECTIVE: The purpose of this study was to evaluate the radiopathological features and the methods for identifying mycobacterial infections in granulomatous nodules resected from the lung. METHODS: Thirty-five solitary lesions resected because of suspected lung cancer were enrolled, including 22 nonfungal granulomatous lesions and 13 benign lesions as controls...
February 21, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28216720/biostatistics-series-module-7-the-statistics-of-diagnostic-tests
#8
Avijit Hazra, Nithya Gogtay
Crucial therapeutic decisions are based on diagnostic tests. Therefore, it is important to evaluate such tests before adopting them for routine use. Although things such as blood tests, cultures, biopsies, and radiological imaging are obvious diagnostic tests, it is not to be forgotten that specific clinical examination procedures, scoring systems based on physiological or psychological evaluation, and ratings based on questionnaires are also diagnostic tests and therefore merit similar evaluation. In the simplest scenario, a diagnostic test will give either a positive (disease likely) or negative (disease unlikely) result...
January 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28216400/mri-prognostication-factors-in-the-setting-of-cervical-spinal-cord-injury-secondary-to-trauma
#9
Rafael Martínez-Pérez, Santiago Cepeda, Igor Paredes, Jose F Alen, Alfonso Lagares
BACKGROUND: and Purpose: Several studies have looked for an association between radiological findings and neurological outcome after cervical trauma. In the current literature, there is a paucity of evidence proving the prognostic role of soft tissue damage or bony integrity. Our objective is to determine radiological findings related to neurological prognosis in patients after incomplete acute traumatic cervical spinal cord injury, regardless of initial neurological exam. MATERIAL AND METHODS: We retrospectively reviewed patients with acute traumatic cervical Spinal Cord Injury who had an MRI performed within the first 96 hours...
February 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28215933/gender-determination-from-diagnostic-factors-on-anteroposterior-pelvic-radiographs
#10
Azadeh Memarian, Kamran Aghakhani, Shahrokh Mehrpisheh, Foroozan Fares
BACKGROUND: Gender determination from skeletal remains is one of the primary factors in forensic medicine. This study aimed to identify the gender of patients referred to the radiology ward of the Rasoul Akram Hospital of Tehran using anteroposterior pelvic radiography. METHODS: A total of 200 patients (100 male and 100 female) referred to the radiology ward of the Rasoul Akram Hospital for anteroposterior pelvic radiography during 2013-2014 were included in this study...
February 16, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28215115/correlation-between-anatomy-of-the-scapula-and-the-incidence-of-rotator-cuff-tear-and-glenohumeral-osteoarthritis-via-radiological-study
#11
Mohd Fairudz Bin Mohd Miswan, Mohd Shahril Bin Ahmad Saman, Teo Seow Hui, Mohamed Zubair Mohamed Al-Fayyadh, Mohamed Razif Bin Mohamed Ali, Ng Wuey Min
INTRODUCTION: We conducted a study to elucidate the correlation between the anatomy of the shoulder joint with the development of rotator cuff tear (RCT) and glenohumeral osteoarthritis (GHOA) by using acromioglenoid angle (AGA). MATERIALS AND METHODS: The AGA is a new measured angle formed between the line from midglenoid to lateral end of the acromion with the line parallel to the glenoid surface. The AGA was measured in a group of 85 shoulders with RCT, 49 with GHOA and 103 non-RCT/GHOA control shoulders...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28213626/effectiveness-of-screening-for-craniosynostosis-with-ultrasound-a-retrospective-review
#12
Kent M Hall, David A Besachio, Matthew D Moore, Adrian J Mora, William R Carter
BACKGROUND: Minimizing the ionizing radiation dose to children is fundamental to pediatric radiology. The most widely accepted imaging examination for evaluating craniosynostosis is computed tomography (CT) of the head, an examination that involves ionizing radiation. OBJECTIVE: To determine if sonography of the cranial sutures is an adequate screening examination for the diagnosis of craniosynostosis in patients with abnormal skull shape. MATERIALS AND METHODS: A retrospective review of all cranial suture ultrasound (US) examinations performed during the course of a 3-year period (July 2012 - September 2015) was undertaken...
February 17, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28210801/patient-radiation-doses-and-reference-levels-in-pediatric-interventional-radiology
#13
Bouchra Habib Geryes, Adeline Bak, Julie Lachaux, Augustin Ozanne, Nathalie Boddaert, Francis Brunelle, Olivier Naggara, Guillaume Saliou
OBJECTIVES: To describe, in a multicentric paediatric population, reference levels (RLs) for three interventional radiological procedures. METHODS: From January 2012 to March 2015, children scheduled for an interventional radiological procedure in two French tertiary centres were retrospectively included and divided into four groups according to age: children younger than 2 years (A1), aged 2-7 years (A5), 8-12 years (A10) and 13-18 years (A15). Three procedures were identified: cerebral digital subtraction angiography (DSA), brain arteriovenous malformation (bAVM) embolization, and head and neck superficial vascular malformation (SVM) percutaneous sclerotherapy...
February 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28208973/shear-wave-elastography-features-of-primary-non-hodgkin-s-lymphoma-of-the-breast-a-case-report-and-literature-review
#14
Youdong Kim, Kyung Hee Ko, Hae Kyoung Jung, Hyun Ju Lee
Lymphoma is a rare malignancy of the breast, comprising approximately 0.04 to 0.5% of breast malignancies. Because the clinical findings of breast lymphoma are nonspecific and similar to those of breast carcinoma, it is important to distinguish breast lymphoma from other breast disease on the basis of radiologic findings. Elastography is an interesting imaging tool that reflects the tissue stiffness, increasingly being used in the evaluation of breast tumours. However, only a limited number of studies have focused on the elastographic findings of breast lymphoma...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28205124/routine-radiologic-contrast-agent-examination-after-gastrectomy-for-gastric-cancer-is-not-useful
#15
Benjamin Struecker, Sascha Chopra, Ann-Christin Heilmann, Johanna Spenke, Christian Denecke, Igor M Sauer, Marcus Bahra, Johann Pratschke, Andreas Andreou, Matthias Biebl
Many studies have showed that routine upper gastrointestinal contrast agent examinations (RCE) for testing the patency of the anastomosis after esophagectomy or the stapler line after sleeve gastrectomy cannot be recommended due to low sensitivity. However, the clinical value of RCE after gastrectomy for gastric cancer remains unclear. We have retrospectively analyzed the clinical course of 377 consecutive patients who underwent gastrectomy for gastric cancer in our institution between 2005 and 2015. To date, we have performed a RCE on the fifth postoperative day before removal of the nasogastric tube and return to oral intake...
February 15, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28204855/parametric-response-mapping-of-dynamic-ct-enhanced-prediction-of-survival-in-hepatocellular-carcinoma-patients-treated-with-transarterial-chemoembolization
#16
Seung Joon Choi, Jonghoon Kim, Hyung Sik Kim, Hyunjin Park
PURPOSE: The aim of this study was to evaluate the prognostic significance of parametric response mapping (PRM) analysis for hepatocellular carcinoma (HCC) patients undergoing transarterial chemoembolization (TACE). METHODS: We recruited 65 HCC patients who underwent TACE. These patients underwent longitudinal multiphasic CT before and after TACE. We applied PRM analysis to the baseline CT before TACE and first/second follow-up CTs. The results of PRM analyses were used to stratify patients into responders and non-responders...
February 15, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28203490/pulsatile-tinnitus-differential-diagnosis-and-radiological-work-up
#17
REVIEW
Sjoert A H Pegge, Stefan C A Steens, Henricus P M Kunst, Frederick J A Meijer
PURPOSE OF REVIEW: Identification of the underlying cause of pulsatile tinnitus is important for treatment decision making and for prognosis estimation. For this, an adequate diagnostic imaging strategy is crucial. RECENT FINDINGS: Both CT and MRI can be useful, and in general, these modalities provide complementary diagnostic information. The scanning protocol can be optimized based on the estimated a priori chance for finding specific pathology, or the need to rule out more rare but clinical significant disease...
2017: Current Radiology Reports
https://www.readbyqxmd.com/read/28203410/relationship-between-radiologic-patterns-pulmonary-function-values-and-bronchoalveolar-lavage-fluid-cells-in-newly-diagnosed-sarcoidosis
#18
Regina Aleksonienė, Ingrida Zeleckienė, Mindaugas Matačiūnas, Roma Puronaitė, Laimutė Jurgauskienė, Radvilė Malickaitė, Edita Strumilienė, Vygantas Gruslys, Rolandas Zablockis, Edvardas Danila
BACKGROUND: The aim of the present study was to identify specious radiologic and/or physiologic prognostic marker(s), which lead to optimize of the patient follow-up frequency. METHODS: Eighty consecutive patients with newly diagnosed pulmonary sarcoidosis. Patients underwent chest radiography, high-resolution computed tomography (HRCT) examination, pulmonary function tests (PFT), bronchoscopy with bronchoalveolar lavage (BAL) and lung biopsy, and bronchoalveolar lavage fluid (BALF) cell examination...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28197830/validation-of-the-risk-prediction-models-state-score-and-start-strategy-to-guide-tace-treatment-in-patients-with-hepatocellular-carcinoma
#19
Aline Mähringer-Kunz, Roman Kloeckner, Michael B Pitton, Christoph Düber, Irene Schmidtmann, Peter R Galle, Sandra Koch, Arndt Weinmann
PURPOSE: Several scoring systems that guide patients' treatment regimen for transarterial chemoembolization (TACE) of hepatocellular carcinoma (HCC) have been introduced, but none have gained widespread acceptance in clinical practice. The purpose of this study is to externally validate the Selection for TrAnsarterial chemoembolization TrEatment (STATE)-score and START-strategy [i.e., sequential use of the STATE-score and Assessment for Retreatment with TACE (ART)-score]. MATERIALS AND METHODS: From January 2000 to September 2015, 933 patients with HCC underwent TACE at our institution...
February 14, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28196280/cuda-based-acceleration-and-bpn-assisted-automation-of-bilateral-filtering-for-brain-mr-image-restoration
#20
Herng-Hua Chang, Yu-Ning Chang
PURPOSE: Bilateral filters have been substantially exploited in numerous magnetic resonance (MR) image restoration applications for decades. Due to the deficiency of theoretical basis on the filter parameter setting, empirical manipulation with fixed values and noise variance related adjustments has generally been employed. The outcome of these strategies is usually sensitive to the variation of the brain structures and not all the three parameter values are optimal. This article is in an attempt to investigate the optimal setting of the bilateral filter, from which an accelerated and automated restoration framework is developed...
February 14, 2017: Medical Physics
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