Percutaneous computed tomography-guided permanent 125I implantation as therapy for pulmonary metastasis.
Authors: Huo X, Huo B, Wang H, Wang L, Cao Q, Zheng G, Wang J, Chai S, Zhang Z, Yang K, Niu Y, Wang H Abstract Purpose: To evaluate intermediate-term outcomes after computed tomography (CT)-guided radioactive 125I seed implantation (CTRISI), and to determine prognostic variables associated with outcomes in patients with pulmonary metastases. Material and methods: Thoracic surgeons evaluated and performed implantation of 125I radioactive seeds under CT guidance or combined with surgical resection. Patients were monitored in the thoracic surgery clinic for recurrence and survival. Results: Fifty patients (31 ...
Source: Journal of Contemporary Brachytherapy - May 27, 2018 Category: Cancer & Oncology Tags: J Contemp Brachytherapy Source Type: research
Sclerosing odontogenic carcinoma in the mandible
We report a case of an asymptomatic sclerosing odontogenic carcinoma in a 68-year-old woman. A bulge was noted in the anterior mandibular region, and it increased rapidly without clinical symptoms. On computed tomography, a radiolucent osteolytic lesion was identified in the central incisor apex of the mandible, and the labial cortical bone disappeared. Magnetic resonance imaging showed an internal heterogeneous circular mass outside the alveolar region. Pathological assessment of a biopsy specimen did not lead to a definitive diagnosis, but a benign odontogenic tumor was suspected. The tumor was resected en bloc with 4 in...
Source: Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology - May 27, 2018 Category: ENT & OMF Source Type: research
A statistical assessment of ductile damage in 304L stainless steel resolved using X-ray computed tomography
Publication date: 13 June 2018 Source:Materials Science and Engineering: A, Volume 728 Author(s): A.J. Cooper, O.C.G. Tuck, T.L. Burnett, A.H. Sherry X-ray computed tomography (XCT) has been shown to reveal the true extent of ductile damage below the fracture surface of failed test specimens, which is often significantly underestimated when probed using 2D serial sectioning techniques and a microscope, since a single plane of material may only exhibit only a handful of resolvable voids. In contrast XCT offers the capability to generate large datasets consisting of hundreds, if not thousands, of individually resolvable voi...
Source: Materials Science and Engineering: A - May 27, 2018 Category: Materials Science Source Type: research
Regional diversity in the murine cortical vascular network is revealed by synchrotron X-ray tomography and is amplified with age.
Authors: Núñez JA, Goring A, Javaheri B, Razi H, Gomez-Nicola D, Pitsillides AA, Thurner PJ, Gomez-Nicola D, Schneider P, Clarkin CE Abstract TCortical bone is permeated by a system of pores, occupied by the blood supply and osteocytes. With ageing, bone mass reduction and disruption of the microstructure are associated with reduced vascular supply. Insight into the regulation of the blood supply to the bone could enhance the understanding of bone strength determinants and fracture healing. Using synchrotron radiation-based computed tomography, the distribution of vascular canals and osteocyte lacunae...
Source: European Cells and Materials - May 26, 2018 Category: Cytology Tags: Eur Cell Mater Source Type: research
Radiological Evaluation of the Dimensions of Lower Molar Alveoli
Conclusions: Proper clinical conditions, for scheduling a postextraction immediate implant placement surgery, involve the presence of 4 bone walls showing and sufficient height and width. The accurate knowledge of alveolus bone morphology of mandibular molars, prior extraction, could be an important guide to avoid potential failures due to nonideal anatomical features to fixture stabilization. (Source: Implant Dentistry)
Source: Implant Dentistry - May 26, 2018 Category: Dentistry Tags: Basic and Clinical Research Source Type: research
Crestal Sinus Augmentation in the Presence of Severe Sinus Mucosal Thickening: A Report of 3 Cases
Conclusions: Maxillary sinus floor elevation using the crestal approach technique in the presence of severe sinus mucosal thickening allows for minimally invasive sinus grafting and simultaneous implant placement and does not increase sinus membrane thickness. (Source: Implant Dentistry)
Source: Implant Dentistry - May 26, 2018 Category: Dentistry Tags: Clinical Science and Techniques Source Type: research
International Study of Comparative Health Effectiveness with Medical and Invasive Approaches (ISCHEMIA) trial: Rationale and design
Conclusions ISCHEMIA will provide new scientific evidence regarding whether an invasive management strategy improves clinical outcomes when added to optimal medical therapy in patients with SIHD and moderate or severe ischemia. (Source: American Heart Journal)
Source: American Heart Journal - May 26, 2018 Category: Cardiology Source Type: research
Hybrid Melody Valve Implantation in Mitral Position in a Child: Usefulness of a 3-Dimensional Printed Model for Preprocedural Planning
We present the case of a 4-month-old child with atrioventricular canal associated with severe left atrioventricular valve dysfunction who previously underwent 3 surgical valve reconstructions without significant improvement. A Hybrid Melody valve (Medtronic, Minneapolis, MN) insertion was planned. Because of the low weight, the risk of left ventricular outflow tract obstruction was significant and therefore evaluated preprocedurally using a cardiac computed tomography-derived 3-dimensional printed model. In vitro tests showed good anchorage of the valve without subaortic obstruction and the procedure was then achieved...
Source: Canadian Journal of Cardiology - May 26, 2018 Category: Cardiology Source Type: research
Fast and automatic bone segmentation and registration of 3D ultrasound to CT for the full pelvic anatomy: a comparative study
ConclusionWe demonstrate an accurate, automatic image processing pipeline for intraoperative alignment of US –CT over the full pelvis and compare its performance with the state-of-the-art methods. The proposed methods are amenable to clinical implementation due to their high accuracy on realistic data and acceptably low runtimes. (Source: International Journal of Computer Assisted Radiology and Surgery)
Source: International Journal of Computer Assisted Radiology and Surgery - May 26, 2018 Category: Intensive Care Source Type: research
Microencapsulation of 2,2 ′-Azobis(2-methylpropionamide) dihydrochloride initiator using acrylonitrile butadiene styrene as shell for application in lost-circulation control
Publication date: 20 September 2018 Source:Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 553 Author(s): Zhengqiang Deng, Jiang Guancheng, Yang Lili, He Yinbo, Ni Xiaoxiao Gel sealants are often used to recover lost circulation, a problem that plagues drilling engineers throughout many oil and gas development project. Organic cross-linked polymer gel such as cross-linked polyacrylamide gel is one of the most popular and available gel sealant materials. It is of strong sealing ability, but the gelation time is too short to control and ensure safe drilling operation. Initiator used to supply free r...
Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects - May 26, 2018 Category: Chemistry Source Type: research
Spray-chilling encapsulation of 2-acetyl-1-pyrroline zinc chloride complex using hydrophobic materials: Feasibility and characterization of microcapsules
This study is the first to demonstrate the feasibility of producing high quality microcapsules from labile flavor complexes by spray-chilling. The use of generally recognized as safe (GRAS) substances, including 2AP and ZnCl2, may allow for widespread commercial use of 2AP as a flavor ingredient. (Source: Food Chemistry)
Source: Food Chemistry - May 26, 2018 Category: Food Science Source Type: research
3D printing of the aortic annulus based on cardiovascular computed tomography: Preliminary experience in pre-procedural planning for aortic valve sizing
to determine reliability and reproducibility of measurements of aortic annulus in 3D models printed from cardiovascular computed tomography (CCT) images. (Source: Journal of Cardiovascular Computed Tomography)
Source: Journal of Cardiovascular Computed Tomography - May 26, 2018 Category: Radiology Authors: Faletti Riccardo, Gatti Marco, Cosentino Aurelio, Bergamasco Laura, Cura Stura Erik, Garabello Domenica, Pennisi Giovanni, Salizzoni Stefano, Veglia Simona, Ottavio Davini, Rinaldi Mauro, Fonio Paolo Tags: Research paper Source Type: research
Renal artery involvement in acute aortic dissection: Prevalence and impact on renal atrophy in non-interventional treatment patients
To evaluate the frequency of renal artery dissection (RAD) and renal hypoperfusion in aortic dissection (AD) and its effect on subsequent renal atrophy in patients who did not undergo therapeutic intervention. (Source: Journal of Cardiovascular Computed Tomography)
Source: Journal of Cardiovascular Computed Tomography - May 26, 2018 Category: Radiology Authors: Chun-Chieh Wang, Huey-Shyan Lin, Yi-Luan Huang, Fu-Zong Wu, Chiung-Chen Chuo, Yu-Jeng Ju, Carol C. Wu, Ming-Ting Wu Tags: Research paper Source Type: research
Delineation guideline for the para-aortic lymph node region in cervical cancer
We read with great interest the paper entitled, “An atlas to aid delineation of para-aortic lymph node region in cervical cancer: Design and validation of contouring guidelines,” which addresses guidelines for delineating the para-aortic lymph node (PAN) clinical target volume (CTV) in patients with cervical cancer . The authors evaluated 21 patients with 39 pathological PANs identified via positron emission tomography–computed tomography (PET-–CT) and used asymmetrical margins to expand the aorta and inferior vena cava (IVC) and create a CTV with more favourable PAN coverage. (Source: Radiotherapy and Oncology)
Source: Radiotherapy and Oncology - May 26, 2018 Category: Radiology Authors: Jie Lee, Meng-Hao Wu, Yu-Jen Chen Tags: Letter to the Editor Source Type: research
Abdominal stab wound injury in children: Do we need different approach?
Penetrating stab wounds in children are relatively rare and no clear recommendations for the optimal evaluation have been devised. An acceptable traditional approach to the patient with an abdominal stab wound who does not require urgent surgery is selective nonoperative management and serial exams. The use of routine computed tomography remains an actively utilized investigation for these patients at many institutions. (Source: Journal of Pediatric Surgery)
Source: Journal of Pediatric Surgery - May 26, 2018 Category: Surgery Authors: Alexander Becker, Kobi Peleg, Joseph Dubose, Yaakov Daskal, Adi Givon, Boris Kessel, Israel Trauma Group Source Type: research
Diagnostic value of Computed Tomography for detecting anastomotic or staple line leakage after bariatric surgery
Post-bariatric anastomotic or staple line leakage (ASLL) is a dreaded complication with an incidence up to 1.6%  and a leak-associated mortality of 5.0-16.7% [2, 3, 5, 10]. ASLL is defined as the presence of intestinal fluid in the abdominal cavity caused by a defect in the anastomosis or staple line . Leakage after bariatric surgery mainly occurs within the first 24-72 hours after surgery [2, 3, 5]. Frequently observed but non-specific signs and symptoms in case of ASLL are abdominal pain, fever, tachycardia, leukocytosis and increased fluid requirement [2-5, 9, 11]. (Source: Surgery for Obesity and Related Diseases)
Source: Surgery for Obesity and Related Diseases - May 26, 2018 Category: Surgery Authors: M.C. Kalff, C.A.L. de Raaff, C.E.E. de Vries, U.K. Coblijn, M. Tjeenk Willink, A.M.B. Fauquenot-Nollen, S. Jensch, S.M.M. de Castro, R.N. van Veen Source Type: research
Evaluation of mandibular odontogenic keratocyst and ameloblastoma by panoramic radiograph and computed tomography.
CONCLUSIONS: Although PR is very helpful and widely used, CT provides more precise information on buccolingual expansion, calcification, bone septa, perforation of cortical bones and tooth resorption, features that are frequently underdescribed in the literature, particularly in OKC. PMID: 29791200 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 25, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research
Localization of the inferior alveolar canal using ultralow dose CT with iterative reconstruction techniques.
CONCLUSIONS: Using FBP, comparable IAC measurements were achieved with 91% reduction in dose compared with a standard exposure protocol. The use of ASIR and MBIR did not improve identification of the IAC in MDCT low dose images. PMID: 29791199 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 25, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research
Authors ’ Response to the Editorial Commentary “Is Arthroscopic Bone Grafting Nearly Equivalent to Open Bone Grafting for Glenoid Bone Defects in Recurrent Anterior Shoulder Instability?” by Matthew T. Provencher
We thank Dr. Provencher for his valuable Editorial Commentary1 and for acknowledging our article entitled “Arthroscopic Versus Open Iliac Crest Bone Grafting in Recurrent Anterior Shoulder Instability With Glenoid Bone Loss: A Computed Tomography-Based Quantitative Assessment.”2 However, we recognized that our article may have led to some misunderstandings, which we now would like to clarify. (Source: Arthroscopy - Journal of Arthroscopic and Related Surgery)
Source: Arthroscopy - Journal of Arthroscopic and Related Surgery - May 25, 2018 Category: Surgery Authors: Werner Anderl, Philipp Heuberer, Herbert Resch, Lukas Ernstbrunner Tags: Letter to the Editor Source Type: research
Current Concepts in Iodinated Contrast Induced Acute Kidney Injury
Iodinated contrast agents administered during computed tomography (CT) studies have the potential to cause post-contrast acute kidney injury (AKI). Prior to CT scans, in certain populations, assessment of the estimated glomerular filtration rate (eGFR) is required to identify patients at risk for adverse events after contrast administration. (Source: Journal of Radiology Nursing)
Source: Journal of Radiology Nursing - May 25, 2018 Category: Radiology Authors: Starr Urbano Tags: ARIN Poster Abstracts Source Type: research
Stryker Orthopaedic Modeling and Analytics (SOMA): A Review.
Authors: Schmidt W, LiArno S, Khlopas A, Petersik A, Mont MA Abstract Due to the differences in bone morphology between demographics such as age, gender, body mass index, and ethnicity, the development of orthopaedic implants requires a large number of anatomical data from various patient populations. In an effort to assess these demographic variations, Stryker Orthopaedic Modeling and Analytics (SOMA) has been developed. SOMA is a suite of tools which utilizes a comprehensive database of computed tomography scans (CT-scans), plus associated three-dimensional (3D) bone models, allowing the user to assess population...
Source: Surgical Technology International - May 25, 2018 Category: Surgery Tags: Surg Technol Int Source Type: research
De novo aneurysm formation of a feeder artery after embolization of a dural arteriovenous fistula and rupture during second embolization.
Conclusions De novo aneurysm of a feeder artery may form after embolization of DAVF because of hemodynamic change. It has a high risk of rupture and should be a primary consideration in embolization of DAVF. PMID: 29788813 [PubMed - as supplied by publisher] (Source: Interventional Neuroradiology)
Source: Interventional Neuroradiology - May 25, 2018 Category: Radiology Tags: Interv Neuroradiol Source Type: research
Carotid body size measured by computed tomographic angiography in individuals born prematurely
Conclusions Carotid body size, as measured using CTA, is not smaller in adults born prematurely or exposed to perinatal oxygen therapy when compared to sex, age, and BMI-matched controls. However, carotid body visualization was lower in juvenile premature patients. The decreased ability to visualize the carotid bodies in these individuals may be a result of their prematurity. (Source: Respiratory Physiology and Neurobiology)
Source: Respiratory Physiology and Neurobiology - May 25, 2018 Category: Respiratory Medicine Source Type: research
Assessment of morphological and anatomical characteristics of mental foramen using cone beam computed tomography
ConclusionsThis study may provide useful information about variations in the position, shape and size, angle of mental foramen, which may help the practitioners to perform safer mental nerve blocks and surgical procedures. (Source: Surgical and Radiologic Anatomy)
Source: Surgical and Radiologic Anatomy - May 25, 2018 Category: Anatomy Source Type: research
Pharmacodynamic study using FLT PET/CT in advanced solid malignancies treated with a sequential combination of X-82 and docetaxel
ConclusionsThe sequential combination of X-82 and docetaxel was safe and led to diminished FLT uptake. Further, decrease in FLT uptake during cycle 2 (X-82 plus docetaxel) was greater than in cycle 1 (X-82 alone), suggesting sequential chemotherapy enhances the pharmacodynamic effect of therapy. (Source: Cancer Chemotherapy and Pharmacology)
Source: Cancer Chemotherapy and Pharmacology - May 25, 2018 Category: Cancer & Oncology Source Type: research
Automated Pulmonary Embolism Risk Classification and Guideline Adherence for Computed Tomography Pulmonary Angiography Ordering
Academic Emergency Medicine, EarlyView. (Source: Academic Emergency Medicine)
Source: Academic Emergency Medicine - May 25, 2018 Category: Emergency Medicine Authors: Christian A. KoziatekMD , Emma Simon , Leora I. HorwitzMD, MHS , Danil V. MakarovMD, MHS , Silas W. SmithMD , Simon JonesPhD , Soterios GyftopoulosMD, MS , Jordan L. SwartzMD, MA , Craig D. Newgard MD, MPH Source Type: research
Binimetinib (MEK162) in recurrent low-grade serous ovarian cancer resistant to chemotherapy and hormonal treatment
Conclusion Binimetinib may present a new treatment option for hormone- and chemotherapy-resistant LGSOC harboring KRAS mutations. (Source: Gynecologic Oncology Reports)
Source: Gynecologic Oncology Reports - May 25, 2018 Category: OBGYN Source Type: research
Quantification of coronary atherosclerotic burden with coronary computed tomography angiography: adapted Leaman score in Croatian patients
AbstractThe aim of the study was to quantify the total coronary atherosclerotic burden in patients with suspected coronary artery disease (CAD) defined by coronary computed tomography adapted Leaman score (CT-LeSc) and to estimate its cut-off level for high coronary atherosclerotic burden. We enrolled 434 consecutive patients referred to coronary computed tomography angiography, of which 261 patients fulfilled the study inclusion criteria. Demographic and clinical characteristics, as well as CAD risk factors were obtained. CAD pre-test probabilities were estimated by the Diamond-Forrester model and Morise score. The corona...
Source: The International Journal of Cardiovascular Imaging - May 25, 2018 Category: Radiology Source Type: research
A new method for the interpretation of veterinary forensic necropsy and PMCT finding with Bayesian decision theory
This study aimed to understand the probability of death, given that a necropsied animal presented a specific RF. To estimate all contributions of the 48 RF, we designed a simple survey based on the Delphi method. In this survey, we invited veterinarians to evaluate the 48 NF and to assign a grade in a Likert scale from 0 to 10 for each of the RFs. In this scale, 0 (zero) indicates that the NF does not contribute to the animal's death, and 10 (ten) indicates that this NFdoes totally contributes to the animal's death. Therefore, each veterinarian, according to their own professional experience, assigns a grade describing how...
Source: Journal of Forensic Radiology and Imaging - May 25, 2018 Category: Radiology Source Type: research
Multivessel Occlusion in Patients Subjected to Thrombectomy [Clinical Sciences]
Background and Purpose—Patients with embolic large-vessel occlusion may present with additional coincidental acute occlusions within or distant from the involved territory, referred to as multivessel occlusion (MVO). Purpose of this study was to assess prevalence of MVO, associated factors, and clinical relevance in patients undergoing endovascular stroke treatment.Methods—Image data of consecutive endovascular candidates (n=720) with direct access to angiography were extracted from a prospective registry. Prevalence of MVO was assessed with multimodal magnetic resonance imaging/computed tomography and confirme...
Source: Stroke - May 25, 2018 Category: Neurology Authors: Johannes Kaesmacher, Pascal J. Mosimann, Mattia Giarrusso, Marwan El-Koussy, Felix Zibold, Eike Piechowiak, Tomas Dobrocky, Raphael Meier, Simon Jung, Sebastian Bellwald, Marcel Arnold, Pasquale Mordasini, Urs Fischer, Jan Gralla Tags: Cerebrovascular Procedures, Ischemic Stroke Original Contributions Source Type: research
Perimesencephalic Hemorrhage [Clinical Sciences]
Conclusions—A single, high-quality computed tomography angiography is the preferred diagnostic strategy. Short-term complications are rare and often transient. Long-term outcome is excellent with respect to disability and death, but high-quality studies focused at neuropsychological sequelae are needed. (Source: Stroke)
Source: Stroke - May 25, 2018 Category: Neurology Authors: Liselore A. Mensing, Mervyn D.I. Vergouwen, Kamil G. Laban, Ynte M. Ruigrok, Birgitta K. Velthuis, Ale Algra, Gabriel J.E. Rinkel Tags: Epidemiology, Risk Factors, Cerebrovascular Disease/Stroke Original Contributions Source Type: research
Magnetic Resonance Imaging Selection for Endovascular Stroke Therapy [Clinical Sciences]
Conclusions—Workflow in GOLIATH demonstrates that magnetic resonance imaging selection for endovascular therapy can be accomplished rapidly and within a similar time frame as computed tomography-based selection.Clinical Trial Registration—URL: https://www.clinicaltrials.gov. Unique identifier: NCT02317237. (Source: Stroke)
Source: Stroke - May 25, 2018 Category: Neurology Authors: Claus Z. Simonsen, Albert J. Yoo, Mads Rasmussen, Kristina E. Sorensen, Thabele Leslie–Mazwi, Grethe Andersen, Leif H. Sorensen Tags: Magnetic Resonance Imaging (MRI), Revascularization, Ischemic Stroke Original Contributions Source Type: research
Clinical Utility of Electronic Alberta Stroke Program Early Computed Tomography Score Software in the ENCHANTED Trial Database [Clinical Sciences]
Background and Purpose—Clinical utility of electronic Alberta Stroke Program Early CT Score (e-ASPECTS), an automated system for quantifying signs of infarction, was evaluated in a large database of thrombolyzed patients with acute ischemic stroke.Methods—All baseline noncontrast computed tomographic scans of patients with anterior circulation acute ischemic stroke who participated in the alteplase dose arm of the randomized controlled trial ENCHANTED (Enhanced Control of Hypertension and Thrombolysis Stroke Study) were reviewed; poor quality and large (>6 mm) slice thickness were excluded. Included scans ha...
Source: Stroke - May 25, 2018 Category: Neurology Authors: Simon Nagel, Xia Wang, Cheryl Carcel, Thompson Robinson, Richard I. Lindley, John Chalmers, Craig S. Anderson Tags: Cerebrovascular Disease/Stroke, Ischemic Stroke Original Contributions Source Type: research
Computed Tomographic Perfusion Predicts Poor Outcomes in a Randomized Trial of Endovascular Therapy [Clinical Sciences]
Conclusions—The majority of patients with CTP imaging in the ESCAPE trial had penumbral patterns, which were associated with better outcomes overall. Patients with penumbra treated with endovascular therapy had the greatest odds of good functional outcome. Nonpenumbral patients were much less likely to achieve good outcomes. (Source: Stroke)
Source: Stroke - May 25, 2018 Category: Neurology Authors: Robert Wannamaker, Taurian Guinand, Bijoy K. Menon, Andrew Demchuk, Mayank Goyal, Donald Frei, Aditya Bharatha, Tudor G. Jovin, Jai Shankar, Timo Krings, Blaise Baxter, Christine Holmstedt, Richard Swartz, Dar Dowlatshahi, Richard Chan, Donatella Tampieri Tags: Ischemic Stroke Original Contributions Source Type: research
Low Levels of Caveolin-1 Predict Symptomatic Bleeding After Thrombolytic Therapy in Patients With Acute Ischemic Stroke [Brief Report]
Background and Purpose—Experimental models of cerebral ischemia demonstrate that the decrease in the caveolin-1 membrane protein results in an increase in endothelial permeability. Because this phenomenon is responsible for hemorrhagic transformation (HT) after cerebral ischemia, we aimed to determine whether caveolin-1 levels may predict bleeding after recombinant tissue-type plasminogen activator (r-tPA) administration in patients with acute stroke.Methods—We studied 133 patients with a first hemispheric stroke treated with r-tPA within 4.5 hours of symptom onset. HT was evaluated and classified on cranial co...
Source: Stroke - May 25, 2018 Category: Neurology Authors: Mar Castellanos, Cecile van Eendenburg, Carme Gubern, Elisabet Kadar, Gemma Huguet, Josep Puig, Tomas Sobrino, Gerard Blasco, Joaquin Serena, Juan Manuel Sanchez Tags: Biomarkers, Endothelium/Vascular Type/Nitric Oxide, Blood-Brain Barrier, Ischemic Stroke Brief Reports Source Type: research
Monte Carlo dosimetric evaluation in PET exams for patients with different BMI and heights
Publication date: October 2018 Source:Radiation Physics and Chemistry, Volume 151 Author(s): Walmir Belinato, Rogério M.V. Silva, Ana P. Perini, Lucio P. Neves, Carla J. Santos, Divanizia N. Souza, William S. Santos In recent years, positron emission tomography (PET), associated with multi-detector computed tomography (MDCT), has become a diagnostic technique widely disseminated to evaluate various malignant tumors and other diseases. However, during PET/CT examinations, the doses of ionizing radiation experienced by the internal organs of the patients due to 18F are unknown, and may be substantial. The aim of this...
Source: Radiation Physics and Chemistry - May 25, 2018 Category: Physics Source Type: research
Association between Gray-White Matter Ratio in Computed Tomography and Outcome in patients with Extra-axial Hematoma
To evaluate the relationship between gray-white matter ratio (GWR) on computed tomography and prognosis in patients with Extra-axial Hematoma (EAH). (Source: World Neurosurgery)
Source: World Neurosurgery - May 25, 2018 Category: Neurosurgery Authors: Xiao-Qing Jin, Yong-Wei Huang, Ming-Fei Yang Tags: Original article Source Type: research
Giant Colonic Cavernous Hemangioma Causing Hematochezia in a 14-Year-Old Boy
A 14-year-old boy presented with intermittent hematochezia for 2 weeks. He reported a similar episode of hematochezia 1 year ago that was regarded as colitis. His medical history was unremarkable. Physical examination showed a nontender, soft, palpable mass at the upper right quadrant of the abdomen. His hemoglobin level was 7.3 g/dL (normal range, 13.0–16.0 g/dL). A computed tomography scan of his abdomen showed asymmetric segmental wall thickening with scattered punctuate calcification (Figure A, white arrow) and heterogeneous enhancement from the m idtransverse colon to the hepatic flexure (Figure A, black a...
Source: Clinical Gastroenterology and Hepatology - May 25, 2018 Category: Gastroenterology Authors: Jae Hyun Yoon, Seon-Young Park, Jae KyunJu Tags: Image of the Month Source Type: research
In Vivo Tibial Fit and Rotational Analysis of a Customized, Patient-Specific TKA versus Off-the-Shelf TKA
J Knee Surg DOI: 10.1055/s-0038-1653966In total knee arthroplasty (TKA), surgeons often face the decision of maximizing tibial component fit and achieving correct rotational alignment at the same time. Customized implants (CIMs) address this difficulty by aiming to replicate the anatomical joint structure, utilizing data from patient-specific knee geometry during the manufacturing. We intraoperatively compared component fit in four tibial zones of a CIM to that of three different off-the-shelf (OTS) TKA designs in 44 knees. Additionally, we assessed the rotational alignment of the tibia using computed tomography (CT)-based...
Source: Journal of Knee Surgery - May 25, 2018 Category: Orthopaedics Authors: Schroeder, Lennart Martin, Gregory Tags: Original Article Source Type: research
Predict value of adiponectin for coronary atherosclerosis plaques according to computed tomography angiography in an asymptomatic population
The association between serum adiponectin levels and coronary atherosclerosis plaque characteristics in asymptomatic populations is unclear. (Source: Clinical Imaging)
Source: Clinical Imaging - May 25, 2018 Category: Radiology Authors: Lu Gan, Li Yang, Guangtao Yan Source Type: research
Accuracy of predicted orthogonal projection angles for valve deployment during transcatheter aortic valve replacement
Multi-detector computed tomography (MDCT) predicted orthogonal projection angles have been introduced to guide valve deployment during transcatheter aortic valve replacement (TAVR). Our aim was to investigate the accuracy of MDCT prediction methods versus actual angiographic deployment angles. (Source: Journal of Cardiovascular Computed Tomography)
Source: Journal of Cardiovascular Computed Tomography - May 25, 2018 Category: Radiology Authors: Arie Steinvil, Gaby Weissman, Andrew W. Ertel, Guy Weigold, Toby Rogers, Edward Koifman, Kyle D. Buchanan, Christian Shults, Rebecca Torguson, Petros G. Okubagzi, Lowell F. Satler, Itsik Ben-Dor, Ron Waksman Tags: Research paper Source Type: research
Diagnostic accuracy of Magnetic Resonance Imaging using liver tissue specific contrast agents and contrast enhanced Multi Detector Computed Tomography: A systematic review of diagnostic test in Hepatocellular Carcinoma (HCC)
The aim of this systematic review is to investigate diagnostic accuracy of Magnetic Resonance Imaging (MRI) scans using liver specific tissue contrast media over contrast enhanced Multi Detector CT (MDCT) in diagnoses of Hepatocellular Carcinoma (HCC) in patients with chronic liver disease. (Source: Radiography)
Source: Radiography - May 25, 2018 Category: Radiology Authors: S. Usman, L. Smith, N. Brown, V. Major Tags: Review article Source Type: research
An Unexpected Adverse Event during Colonoscopy Screening: Bochdalek Hernia.
Abstract Bochdalek hernia (BH) is defined as herniated abdominal contents appearing throughout the posterolateral segment of the diaphragm. It is usually observed during the prenatal or newborn period. Here, we report a case of an adult patient with herniated omentum and colon due to BH that was discovered during a colonoscopy. A 41-year-old woman was referred to our hospital with severe left chest and abdominal pain that began during a colonoscopy. Her chest radiography showed colonic shadow filling in the lower half of the left thoracic cavity. A computed tomography scan revealed an approximately 6-cm-sized left...
Source: Korean J Gastroenter... - May 25, 2018 Category: Gastroenterology Authors: Lee JS, Kim ES, Jung MK, Kim SK, Jin S, Lee DH, Seo JW Tags: Korean J Gastroenterol Source Type: research
[Liver Abscess Secondary to Perforation after Duodenal Endoscopic Resection].
Abstract Duodenal perforation is a complication of endoscopic mucosal resection. Liver abscess secondary to iatrogenic perforation is extremely rare. A 43-year-old female visited the hospital to remove a sub-epithelial tumor on the duodenal bulb. After endoscopic mucosal resection with band ligation, duodenal perforation occurred. Endoscopic closure was performed successfully using a clipping device to manage duodenal perforation. After 4 weeks, the patient visited our outpatient clinic due to abdominal pain and fever. Abdominal computed tomography showed liver abscess that involved segment three. Liver abscess wa...
Source: Korean J Gastroenter... - May 25, 2018 Category: Gastroenterology Authors: Choi SH, Kim SJ, Kang DH, Kim HW, Choi CW, Kim TU, Lee JS, Ko JH Tags: Korean J Gastroenterol Source Type: research
Treatment Using the SpyGlass Digital System in a Patient with Hepatolithiasis after a Whipple Procedure.
Authors: Harima H, Hamabe K, Hisano F, Matsuzaki Y, Itoh T, Sanuki K, Sakaida I Abstract An 89-year-old man was referred to our hospital for treatment of hepatolithiasis causing recurrent cholangitis. He had undergone a prior Whipple procedure. Computed tomography demonstrated left-sided hepatolithiasis. First, we conducted peroral direct cholangioscopy (PDCS) using an ultraslim endoscope. Although PDCS was successfully conducted, it was unsuccessful in removing all the stones. The stones located in the B2 segment were difficult to remove because the endoscope could not be inserted deeply into this segment due to t...
Source: Clinical Endoscopy - May 24, 2018 Category: Gastroenterology Tags: Clin Endosc Source Type: research
Using Black Bone Magnetic Resonance Imaging in Craniofacial Virtual Surgical Planning: A Comparative Cadaver Study
Conclusions: This study demonstrates that virtual surgical planning and three-dimensional craniofacial surgical guide creation can be performed using black bone MRI with accuracy comparable to that of CT. This could dramatically reduce radiation exposure of craniofacial reconstruction patients. (Source: Plastic and Reconstructive Surgery)
Source: Plastic and Reconstructive Surgery - May 24, 2018 Category: Cosmetic Surgery Tags: Pediatric/Craniofacial: Original Article Source Type: research
The Value of 18F-FDG PET/CT Mathematical Prediction Model in Diagnosis of Solitary Pulmonary Nodules.
Conclusion: The mathematical predictive model has high accuracy in estimating the malignant probability of patients with SPNs. PMID: 29789808 [PubMed - in process] (Source: Biomed Res)
Source: Biomed Res - May 24, 2018 Category: Research Authors: Wang L, Chen Y, Tang K, Lin J, Zhang H Tags: Biomed Res Int Source Type: research
Geometry of the left ventricular outflow tract assessed by 3D TEE in patients with aortic stenosis: impact of upper septal hypertrophy on measurements of Doppler-derived left ventricular stroke volume
Conclusions3D TEE can provide a precise assessment of the LVOT in AS. USH affects the LVOT geometry in patients with AS, which might lead to inaccurate assessments of disease severity. (Source: Journal of Echocardiography)
Source: Journal of Echocardiography - May 24, 2018 Category: Cardiology Source Type: research
Erupted coronary atheroma: insights from multi-modality imaging
AbstractA 58-year-old gentleman with prolonged chest pain and 20-min ST-segment elevation in inferior lead on Holter monitoring was hospitalized. Multi-slice computed tomography identified severe stenosis with low density area and positive remodeling. Despite the suggestive features of vulnerable lesion, intravascular ultrasound and near-infrared spectroscopy imaging identified ruptured plaque without any lipidic material which were contrary to findings from multi-slice computed tomography. Lipidic materials may travel into coronary circulation following its spontaneous rupture, resulting in zero lipid core burden index. M...
Source: The International Journal of Cardiovascular Imaging - May 24, 2018 Category: Radiology Source Type: research
Artifact reduction from dental implants using virtual monoenergetic reconstructions from novel spectral detector CT
Conclusions Virtual monoenergetic images from SDCT reduce metal artifacts from dental implants and improve diagnostic assessment of surrounding soft tissue. (Source: European Journal of Radiology)
Source: European Journal of Radiology - May 24, 2018 Category: Radiology Source Type: research