journal
https://read.qxmd.com/read/31995014/computer-aided-diagnosis-of-skin-cancer-a-review
#1
JOURNAL ARTICLE
Navid Razmjooy, Mohsen Ashourian, Maryam Karimifard, Vania V Estrela, Hermes J Loschi, Douglas do Nascimento, Reinaldo P França, Mikhail Vishnevski
Cancer is currently one of the main health issues in the world. Among different varieties of cancers, skin cancer is the most common cancer in the world and accounts for 75% of the world's cancer. Indeed, skin cancer involves abnormal changes in the outer layer of the skin. Although most people with skin cancer are healed, it is one of the major concerns of people due to its high prevalence. Most types of skin cancers grow only locally and invade adjacent tissues, but some of them, especially melanoma (cancer of the pigment cells), which is the rarest type of skin cancer, may spread through the circulatory system or lymphatic system and reach the farthest points of the body...
January 28, 2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31976845/colored-video-analysis-in-wireless-capsule-endoscopy-a-survey-of-state-of-the-art
#2
JOURNAL ARTICLE
Amira S Ashour, Nilanjan Dey, Waleed S Mohamed, Jolanda G Tromp, R Simon Sherratt, Fuqian Shi, Luminița Moraru
Wireless Capsule Endoscopy (WCE) is a highly promising technology for gastrointestinal (GI) tract abnormality diagnosis. However, low image resolution and low frame rates are challenging issues in WCE. In addition, the relevant frames containing the features of interest for accurate diagnosis only constitute 1% of the complete video information. For these reasons, analyzing the WCE videos is still a time consuming and laborious examination for the gastroenterologists, which reduces WCE system usability. This leads to the emergent need to speed-up and automates the WCE video process for GI tract examinations...
January 24, 2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31976844/association-between-regional-cerebral-blood-flow-and-mini-mental-state-examination-score-in-patients-with-alzheimer-s-disease
#3
JOURNAL ARTICLE
Hitoshi Saito, Ikuo Kashiwakura, Megumi Tsushima, Yasushi Mariya
BACKGROUND: In patients with Alzheimer's disease (AD), cerebral blood flow (CBF) is decreased from the early stages. CBF in AD is currently estimated from Z-scores using statistical analysis. However, the Z-score is not considered the impaired area ratio. METHODS: In the present study, a novel indicator, ΣzS, associated with brain surface area and Z-scores, was defined and the association with regional CBF was estimated using Mini-Mental State Examination (MMSE) scores, which indicate the severity of cognitive impairment in patients with AD...
January 24, 2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31976843/use-of-three-dimensional-printing-in-the-development-of-optimal-cardiac-ct-scanning-protocols
#4
JOURNAL ARTICLE
Zhonghua Sun
Three-dimensional (3D) is increasingly used in medical applications with most of the studies focusing on its applications in medical education and training, pre-surgical planning and simulation, and doctor-patient communication. An emerging area of utilising 3D printed models lies in the development of cardiac computed tomography (CT) protocols for visualisation and detection of cardiovascular disease. Specifically, 3D printed heart and cardiovascular models have been shown potential value in the evaluation of coronary plaques and coronary stents, aortic diseases and detection of pulmonary embolism...
January 24, 2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003318/detection-of-thyroid-nodules-with-ultrasound-images-based-on-deep-learning
#5
JOURNAL ARTICLE
Xia Yu, Hongjie Wang, Liyong Ma
BACKGROUND: Thyroid nodules are a common clinical entity with high incidence. Ultrasound is often employed to detect and evaluate thyroid nodules. The development of an efficient automated method to detect thyroid nodules using ultrasound has the potential to reduce both physician workload and operator-dependence. OBJECTIVES: To study the method of automatic detection of thyroid nodules based on deep learning using ultrasound, and to obtain the detection method with higher accuracy and better performance...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003317/t1-relaxation-time-of-achilles-tendon-at-3-tesla-with-special-reference-to-relevant-clinical-score-a-preliminary-study
#6
JOURNAL ARTICLE
Zeineb Tbini, Mokhtar Mars, Mouna Bouaziz
PURPOSE: The purpose of this study was to investigate T1 relaxation time of the human Achilles tendon, to test its short-term repeatability as well as the minimal detectable change, and to assess the extent that correlate with clinical symptoms. METHODS: Twenty asymptomatic volunteers and eighteen patients with clinically and sonographically confirmed tendinopathy were scanned for ankle using a 3 Tesla (T) MR scanner. T1 maps were calculated from a variable flip angle gradient echo Ultra-short echo time sequence (VFA-GE UTE) and inversion recovery spin echo sequence (IR-SE) using a self-developed matlab algorithm in three regions of interest of Achilles Tendon (AT)...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003316/image-reconstruction-with-the-fourier-coefficients-for-magnetic-induction-tomography
#7
JOURNAL ARTICLE
Jingwen Wang, Xu Wang, Dan Yang, Kaiyang Wang
BACKGROUND: Image reconstruction of magnetic induction tomography (MIT) is a typical ill-posed inverse problem, which means that the measurements are always far from enough. Thus, MIT image reconstruction results using conventional algorithms such as linear back projection and Landweber often suffer from limitations such as low resolution and blurred edges. METHODS: In this paper, based on the recent finite rate of innovation (FRI) framework, a novel image reconstruction method with MIT system is presented...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003315/risk-factors-for-different-grades-of-lower-respiratory-tract-infections-in-children-under-five-years-old-with-measles-based-on-chest-radiography
#8
JOURNAL ARTICLE
Huanguo Li, Minming Zhang, Qun Lao, Yushuang Ding, Kaiyu Zhao, Ruju Xu
BACKGROUND: Although measles epidemic has been controlled effectively after measles vaccination being carried out, China is still the focus of measles epidemic. The lower respiratory tract infections (LRTIs) is the most common complication, and also the most common reason for the death of patients with measles. PURPOSE: To analyze what clinical factors could affect the grades of LRTIs in children under five years old with measles. METHODS: Patients' 13 clinical factors and chest radiography were analyzed retrospectively...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003314/unusual-cerebral-involvement-of-rheumatoid-arthritis-mimicking-a-tumor
#9
Sevil Tokdemir, Huseyin Toprak, Alpay Alkan
BACKGROUND: The central nervous system's involvement in Rheumatoid Arthritis (RA) is infrequent and can be life-threatening. Mass-like CNS involvement is an unusual presentation. A 45 year old man had suffered seropositive rheumatoid arthritis for five years referred to our hospital with one-week history of right-sided facial paralysis, left hemiparesis and headache. DISCUSSION: MRI demonstrated hyperintense mass-like lesion extended from mesencephalon to right hippocampus and basal ganglia on T2 and FLAIR images...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003313/the-role-of-atrial-fibrosis-detected-by-delayed-enhancement-mri-in-atrial-fibrillation-ablation
#10
JOURNAL ARTICLE
Zsuzsanna Kis, Astrid Amanda Hendriks, Taulant Muka, Wichor M Bramer, Istvan Kovacs, Tamas Szili-Torok
INTRODUCTION: Atrial Fibrillation (AF) is associated with remodeling of the atrial tissue, which leads to fibrosis that can contribute to the initiation and maintenance of AF. Delayed- Enhanced Cardiac Magnetic Resonance (DE-CMR) imaging for atrial wall fibrosis detection was used in several studies to guide AF ablation. The aim of present study was to systematically review the literature on the role of atrial fibrosis detected by DE-CMR imaging on AF ablation outcome. METHODS: Eight bibliographic electronic databases were searched to identify all published relevant studies until 21st of March, 2016...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003312/intracoronary-imaging-for-assessment-of-vascular-healing-and-stent-follow-up-in-bioresorbable-vascular-scaffolds
#11
JOURNAL ARTICLE
Ioan Florin Ferent, Andras Mester, Ota Hlinomaz, Ladislav Groch, Michal Rezek, Jan Sitar, Jiri Semenka, Martin Novak, Imre Benedek
Bioresorbable Vascular Scaffolds (BVS) are polymer-based materials implanted in the coronary arteries in order to treat atherosclerotic lesions, based on the concept that once the lesion has been treated, the material of the implanted stent will undergo a process of gradual resorption that will leave, in several years, the vessel wall smooth, free of any foreign material and with its vasomotion restored. However, after the first enthusiastic reports on the efficacy of BVSs, the recently published trials demonstrated disappointing results regarding long-term patency following BVS implantation, which were mainly attributed to technical deficiencies during the stenting procedure...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003311/cardiovascular-imaging-for-guiding-interventional-therapy-in-structural-heart-diseases
#12
JOURNAL ARTICLE
Nora Rat, Iolanda Muntean, Diana Opincariu, Liliana Gozar, Rodica Togănel, Monica Chițu
Development of interventional methods has revolutionized the treatment of structural cardiac diseases. Given the complexity of structural interventions and the anatomical variability of various structural defects, novel imaging techniques have been implemented in the current clinical practice for guiding the interventional procedure and for selection of the device to be used. Three- dimensional echocardiography is the most used imaging method that has improved the threedimensional assessment of cardiac structures, and it has considerably reduced the cost of complications derived from malalignment of interventional devices...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003310/computed-tomographic-angiography-for-risk-stratification-in-patients-with-acute-chest-pain-the-triple-rule-out-concept-in-the-emergency-department
#13
REVIEW
Marton-Popovici Monica, Béla Merkely, Bálint Szilveszter, Zsófia Dora Drobni, Pál Maurovich-Horvat
BACKGROUND: Acute chest pain is one of the most common reasons for Emergency Department (ED) visits and hospital admissions. As this could represent the first symptom of a lifethreatening condition, urgent identification of the etiology of chest pain is of utmost importance in emergency settings. Such high-risk conditions that can present with acute chest pain in the ED include Acute Coronary Syndromes (ACS), Pulmonary Embolisms (PE) and Acute Aortic Syndromes (AAS). DISCUSSION: The concept of Triple Rule-out Computed Tomographic Angiography (TRO-CTA) for patients presenting with acute chest pain in the ED is based on the use of coronary computed tomographic angiography as a single imaging technique, able to diagnose or exclude three lifethreatening conditions in one single step: ACS, AAS and PE...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/32003309/multi-modality-cardiac-imaging-in-interventional-cardiology
#14
EDITORIAL
Theodora Benedek
No abstract text is available yet for this article.
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31989898/torsion-of-wandering-spleen-importance-of-splenic-density-and-liver-to-spleen-attenuation-ratio-on-ct
#15
JOURNAL ARTICLE
Yusuf Kenan Cetinoglu, Sebnem Karasu, Turan Acar, Muhsin Engin Uluc, Mehmet Haciyanli, Ozgur Tosun
BACKGROUND: Wandering spleen (WS) is a rare clinical condition which may cause fatal complication like torsion with subsequent infarction. Determination of splenic parenchyma viability is very important in deciding whether splenopexy rather than splenectomy is an option. Contrast- enhanced computed tomography (CECT) is important for the diagnosis of WS and assessment of the viability of spleen. DISCUSSION: We reviewed the CT studies of four cases with WS. We measured the mean splenic and liver density and calculated liver-to-spleen attenuation ratio (LSAR)...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31989897/the-predictive-role-of-abdominal-fat-parameters-and-stone-density-on-swl-outcomes
#16
JOURNAL ARTICLE
Coskun Kaya, Yurdaer Kaynak, Aral Karabag, Aykut Aykaç
BACKGROUND: Our aim was to detect the role of radiological abdominal fat parameters by tomography and stone density by plain X-ray on extracorporeal Shock Wave Lithotripsy (SWL) stone-free rate. METHODS: The patients who had undergone SWL for a single opaque renal stone < 2 cm in diameter and proximal ureteric stone < 1 cm in diameter were collected retrospectively. The characteristics of patients and stones were recorded. The stone attitude, HU, abdominal fat parameters, paraperirenal fat area, perirenal infiltration and severity of hydronephrosis with pre-treatment Non- Contrast Computed Tomography (NCCT) and stone density with radiography were evaluated by a radiologist...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31989896/prone-myocardial-perfusion-imaging-and-breast-attenuation-a-phantom-study
#17
JOURNAL ARTICLE
Susie Medeiros Oliveira Ramos, Adriana Pereira Glavam, Adriana Soares Xavier de Brito, Tadeu Takao Almodovar Kubo, Gustavo Tukamoto, Debora da Cunha Pereira Sampaio, Lidia Vasconcellos de Sá
BACKGROUND: Soft tissue attenuation artifacts are the most common cause of misinterpretation in myocardial perfusion Imaging (MPI). Few studies assessing the value of prone imaging in women have been published. Breast attenuation artifacts can be present in up to 40% of the MPI studies in women. OBJECTIVES: This study aimed at evaluating the potential impact of prone MPI on breast attenuation, with a critical analysis of activity optimization and breast size influence...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31989895/videofluoroscopic-and-manometric-evaluation-of-oropharyngeal-and-esophageal-motility-disorders
#18
JOURNAL ARTICLE
Cesur Samanci, Yilmaz Onal, Ugur Korman
BACKGROUND: Esophageal motility studies are performed in patients who have dysphagia that is not explained by stenosis. Diagnosis can be challenging and requires expertise in the interpretation of tests and symptoms. AIMS: Our aim is to investigate the diagnostic value of videofluoroscopic swallowing study (VFSS) in combination with esophageal manometry. STUDY DESIGN: This study has a prospective study design. METHODS: 73 patients with dysphagia underwent videofluoroscopy in a standing position...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31989894/evaluation-of-the-reliability-of-interim-pet-ct-in-the-hodgkin-lymphoma
#19
JOURNAL ARTICLE
Rafet Eren, Cihan Gündoğan, Ceyda Aslan, Alper Koç, Mehmet Hilmi Doğu, Şermin Altındal, Osman Yokuş, Elif Suyanı, Tevfik Fikret Çermik
INTRODUCTION: Positron-emission tomography (PET)/computerized tomography (CT) with 18F-fludeoxyglucose (FDG) has been come into use for risk assessment of Hodgkin lymphoma (HL) patients in recent years. The aim of our study is to evaluate the reliability of interim PET results according to Deauville score (DS), and also to compared PET findings with tumor reduction on CT. METHODS: Forty-two HL patients (median 39, range 19-75 y, 27 M, 15 F) were retrospectively evaluated with pre, interim and post-treatment PET/CT imaging...
2020: Current Medical Imaging Reviews
https://read.qxmd.com/read/31989893/melanoma-skin-cancer-detection-based-on-image-processing
#20
JOURNAL ARTICLE
Nadia Smaoui Zghal, Nabil Derbel
BACKGROUND: Skin cancer is one of the most common forms of cancers among humans. It can be classified as non-melanoma and melanoma. Although melanomas are less common than non-melanomas, the former is the most common cause of mortality. Therefore, it becomes necessary to develop a Computer-aided Diagnosis (CAD) aiming to detect this kind of lesion and enable the diagnosis of the disease at an early stage in order to augment the patient's survival likelihood. AIMS: This paper aims to develop a simple method capable of detecting and classifying skin lesions using dermoscopy images based on ABCD rules...
2020: Current Medical Imaging Reviews
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