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https://www.readbyqxmd.com/read/28301914/prevalence-of-deep-vein-thrombosis-in-hospitalized-patients-with-suspected-pulmonary-embolism-ruled-out-by-multislice-ct-angiography
#1
Fernando Javier Vazquez, Maria Lourdes Posadas-Martinez, Bruno Bioetti, Diego Giunta, Esteban Gandara
Current evidence suggests that for outpatients with suspected pulmonary embolism (PE), multislice computed tomographic angiography (CTPA) is sufficient to rule out PE. However, the accuracy of CTPA alone has not been established for hospitalized patients. Our goal was to determine the prevalence of deep vein thrombosis (DVT) in hospitalized patients who had PE ruled out by CTPA. We conducted a prospective cohort study of patients who developed symptoms indicative of PE, after being admitted to the hospital for any reason other than PE and were evaluated with multislice CTPA...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28297429/method-and-phantom-to-study-combined-effects-of-in-plane-x-y-and-z-axis-resolution-for-3d-ct-imaging
#2
David Goodenough, Josh Levy, Smari Kristinsson, Jesper Fredriksson, Hildur Olafsdottir, Austin Healy
Increasingly, the advent of multislice CT scanners, volume CT scanners, and total body spiral acquisition modes has led to the use of Multi Planar Reconstruction and 3D datasets. In considering 3D resolution properties of a CT system it is important to note that both the in-plane (x,y) and z-axis (slice thickness) influence the visualization and detection of objects within the scanned volume. This study investigates ways to consider both the in-plane resolution and the z-axis resolution in a single phantom wherein analytic or visualized analysis can yield information on these combined effects...
September 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28289756/predictive-value-of-pooled-cerebral-blood-volume-mapping-for-final-infarct-volume-in-patients-with-major-artery-occlusions-a%C3%A2-retrospective-analysis
#3
Lauma Ava, Joachim Berkefeld, Arne Lauer, Alexander Seiler, Waltraud Pfeilschifter, Monika Müller-Eschner, Se-Jong You, Stefan Weidauer, Ulrich Pilatus, Marlies Wagner
PURPOSE: Detection of ischemic core and collateral status is helpful to predict clinical success of thrombectomy in acute cerebral artery occlusion. Angiographic flat panel detector computed tomography (CT) with pooled blood volume (PBV) data acquisition was described to be helpful to estimate ischemic core in stroke patients prior to thrombectomy and to depict cerebral vessels. We therefore retrospectively evaluated preinterventional PBV data of a large collective of ischemic stroke patients prior to thrombectomy to test its predictive value on final infarct considering PBV maps and collateral status...
March 13, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28256439/automated-bone-subtraction-image-analysis-software-package-for-improved-and-faster-ct-monitoring-of-longitudinal-spine-involvement-in-patients-with-multiple-myeloma
#4
Marius Horger, Hendrick Ditt, Shu Liao, Katja Weisel, Jan Fritz, Wolfgang M Thaiss, Sascha Kaufmann, Konstantin Nikolaou, Christopher Kloth
RATIONALE AND OBJECTIVES: The study aimed to assess the diagnostic benefit of a novel computed tomography (CT) post-processing software generating subtraction maps of longitudinal non-enhanced CT examinations for monitoring the course of myeloma bone disease in the spine. MATERIALS AND METHODS: The local institutional review board approved the retrospective data evaluation. Included were 82 consecutive myeloma patients (46 male; mean age, 65.08 ± 9.76) who underwent 188 repeated whole-body reduced-dose Multislice Detector Computed Tomography (MDCT) at our institution between December 2013 and January 2016...
February 27, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28224428/a-new-method-of-3-dimensional-localization-of-intraocular-foreign-bodies-using-ct-imaging-a-role-of-optic-nerve
#5
Qi Yao, Han-Ping Wu, Bin Xiong, Ping Han, Chuan-Sheng Zheng
Computed tomography (CT) is considered the most sensitive method for the detection of intraocular foreign bodies (IOFBs). The purpose of this study was to evaluate a new method of 3-dimentional (3D) localization of IOFBs that takes advantage of the anatomical structure of the optic nerve and to assess the clinical outcomes using this new method. Twenty-two trauma patients with IOFBs or suspected IOFBs admitted to our hospital were scanned with multislice CT (MSCT) between July and December 2003. All scanning was performed with a 16-row spiral CT in axial plane using a sequential scanning protocol...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28213948/hourglass-shaped-right-ventricle-and-localized-constrictive-pericarditis
#6
Alper Karakus, Hasan Ari, Sencer Camci, Selma Ari, Ahmet Tutuncu, Mehmet Melek
Constrictive pericarditis is characterized by thick pericardial fibrosis and frequent calcification that progressively impairs diastolic filling of the heart. The diagnosis of constrictive pericarditis has been challenging even though multiple diagnostic modalities have been developed. The diagnosis of constructive pericarditis is especially difficult in localized constrictive pericarditis which is extremely rare. We report a case of localized constrictive pericarditis with a 3D multislice cardiac computed tomography (CT) finding of the constrictive band causing strangulation and hourglass shaping of the right ventricle...
February 2017: Echocardiography
https://www.readbyqxmd.com/read/28164118/multislice-analysis-of-blood-flow-values-in-ct-perfusion-studies-of-lung-cancer
#7
Silvia Malavasi, Domenico Barone, Giampaolo Gavelli, Alessandro Bevilacqua
Objectives. Tumour heterogeneity represents a key issue in CT perfusion (CTp), where all studies are usually based on global mean or median values of perfusion maps, often computed on whole tumour. We sought to determine whether, and to what extent, such global values can be representative of tumour heterogeneity, with respect to single slices, and could be used for therapy assessment. Materials and Methods. Twelve patients with one primary non-small cell lung cancer lesion were enrolled in this study, for a total amount of 26 CTp examinations and 118 slices...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28156127/morphological-relationship-analysis-of-impacted-maxillary-canines-and-the-adjacent-teeth-on-3-dimensional-reconstructed-ct-images
#8
Yoojun Kim, Hong-Keun Hyun, Ki-Taeg Jang
OBJECTIVE: To examine whether there is a relationship between maxillary canine impaction and the morphologic characteristics of the maxillary dentition, especially the root of the lateral incisor. MATERIALS AND METHODS: In this study, we selected only patients with unilateral maxillary canine impaction to compare the morphologic characteristics of the dentition on the impaction side and the clinically normal eruption side. The sample size was decided to be 40 based on the pilot study...
February 3, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28144071/multislice-computed-tomography-and-virtual-bronchoscopy-diagnosis-of-interbronchial-fistula
#9
Venkatraman Indiran
Although tuberculosis is a rather common disease in the Indian subcontinent, tracheobronchial involvement in tuberculosis is still rare. Fistula formation between bronchi is very rare considering that only four cases have been published in the English literature. We present a case of multislice computed tomography (CT) and virtual bronchoscopy diagnosis of interbronchial fistula in a patient with tuberculosis along with a review of literature of the same. This happens to be the smallest of the interbronchial fistula identified on imaging so far and the first case from the Indian subcontinent...
January 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28115983/an-investigation-of-bedside-laparoscopy-in-the-icu-for-cases-of-non-occlusive-mesenteric-ischemia
#10
G Cocorullo, A Mirabella, N Falco, T Fontana, R Tutino, L Licari, G Salamone, G Scerrino, G Gulotta
BACKGROUND: Acute mesenteric ischemia is a rare affection with high related mortality. NOMI presents the most important diagnostic problems and is related with the higher risk of white laparotomy. This study wants to give a contribution for the validation of laparoscopic approach in case of NOMI. METHODS: Thirty-two consecutive patients were admitted in last 10 years in ICU of Paolo Giaccone University Hospital of Palermo for AMI. Diagnosis was obtained by multislice CT and selective angiography was done if clinical conditions were permissive...
2017: World Journal of Emergency Surgery: WJES
https://www.readbyqxmd.com/read/28100057/wilkie%C3%A2-s-syndrome
#11
Carlos Oliva-Fonte, Cristina Fernández Rey, Javier Pereda Rodríguez, Ana María González-Fernández
We report the case of a 14 year-old woman, who presents epigastric abdominal pain, abundant vomits and an important abdominal distension. Previously, she presented similar episodes. She has not any significant prior medical history. CT is performed and the imaging findings are consistent with Wilkie´s syndrome. Wilkie´s syndrome is a rare condition, that results from a intestinal obstruction caused by third portion duodenal compression between the abdominal aorta and the superior mesenteric artery. When the angle between both structures diminishes and the distance between the SMA and the aorta decreases (the most diagnostic value), duodenal obstruction occurs...
January 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28069288/diagnostic-imaging-of-the-hepatobiliary-system-an-update
#12
REVIEW
Angela J Marolf
Recent advances in diagnostic imaging of the hepatobiliary system include MRI, computed tomography (CT), contrast-enhanced ultrasound, and ultrasound elastography. With the advent of multislice CT scanners, sedated examinations in veterinary patients are feasible, increasing the utility of this imaging modality. CT and MRI provide additional information for dogs and cats with hepatobiliary diseases due to lack of superimposition of structures, operator dependence, and through intravenous contrast administration...
January 6, 2017: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/27970094/tct-714-incidental-findings-in-multislice-ct-for-procedural-planning-in-transcatheter-aortic-valve-implantation-prevalence-clinical-relevance-and-outcome
#13
Teresa Trenkwalder, Anna Lena Lahmann, Costanza Pellegrini, Magdalena Nowicka, Tobias Rheude, N Patrick Mayr, Sabine Bleiziffer, Ruediger Lange, Heribert Schunkert, Markus Kasel, Adnan Kastrati, Oliver Husser, Martin Hadamitzky, Christian Hengstenberg
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27908164/comparison-of-low-contrast-detectability-between-two-ct-reconstruction-algorithms-using-voxel-based-3d-printed-textured-phantoms
#14
COMPARATIVE STUDY
Justin Solomon, Alexandre Ba, François Bochud, Ehsan Samei
PURPOSE: To use novel voxel-based 3D printed textured phantoms in order to compare low-contrast detectability between two reconstruction algorithms, FBP (filtered-backprojection) and SAFIRE (sinogram affirmed iterative reconstruction) and determine what impact background texture (i.e., anatomical noise) has on estimating the dose reduction potential of SAFIRE. METHODS: Liver volumes were segmented from 23 abdominal CT cases. The volumes were characterized in terms of texture features from gray-level co-occurrence and run-length matrices...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27907931/coronary-artery-anomalies-diagnosis-and-classification-based-on-cardiac-ct-and-mri-cmr-from-alcapa-to-anomalies-of-termination
#15
Philipp Heermann, Walter Heindel, Christoph Schülke
Background Coronary artery anomalies encompass a clinically and anatomically variable spectrum including physiological variants and pathophysiologically relevant anomalies. The majority of the variants has no hemodynamic relevance and is often detected accidentally. The recognition of the rare and relevant anomalies that cause either relevant shunt volumes leading to myocardial ischemia or ventricular tachyarrhythmias with the risk of sudden cardiac death is of major importance. Methods This review is based on a literature search in PubMed conducted using the key words "coronary artery" and/or "anomaly" and/or "anomalous origin" and/or "myocardial bridging" and/or "coronary artery fistula" and/or "Bland-White-Garland" and/or "ALCAPA"...
January 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/27878800/a-single-centre-experience-of-the-implementation-of-adrenal-vein-sampling-procedure-the-impact-on-the-diagnostic-work-up-in-primary-aldosteronism
#16
Jacek Kądziela, Aleksander Prejbisz, Ilona Michałowska, Sylwia Kołodziejczyk-Kruk, Leo Schultze Kool, Marek Kabat, Hanna Janaszek-Sitkowska, Sadegh Toutounchi, Zbigniew Gałązka, Urszula Ambroziak, Tomasz Bednarczuk, Dorota Ptasińska-Wnuk, Michał Hoffmann, Magdalena Januszewicz, Andrzej Januszewicz, Adam Witkowski
BACKGROUND: Primary aldosteronism is one of the most common causes of secondary hypertension. Adrenal vein sampling (AVS) remains a "gold standard" procedure in differentiation between unilateral (adenoma) and bilateral (hyperplasia) disease. AIM: The aim of this study was to present our single-centre experience in establishing and implementating the AVS procedure. METHODS: All patients had primary aldosteronism confirmed in a salt-infusion test...
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/27847694/contribution-of-low-dose-computerized-tomography-with-digital-multiplanar-reconstructions-in-thoracic-epidurography-and-correlation-with-sensory-block-in-postoperative-analgesia
#17
Cyrus Motamed, Karin Chedevergne, Frederic Deschamps, Lambros Tselikas, Christian Jayr
BACKGROUND: The level of sensory block in postoperative epidural analgesia has been correlated with conventional contrast epidurography in only one study, while low-dose CT scan epidurography with multiplanar reconstruction may be a better tool for this purpose. OBJECTIVES: The primary objective of this study was to evaluate, by CT imaging and digital multiplanar reconstruction, the spread and distribution of contrast medium injected into the epidural space through a catheter inserted in a low thoracic position for postoperative analgesia...
October 2016: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/27846460/coronary-risk-stratification-of-patients-undergoing-surgery-for-valvular-heart-disease
#18
Rasmus Bo Hasselbalch, Thomas Engstrøm, Mia Pries-Heje, Merete Heitmann, Frants Pedersen, Morten Schou, Hans Mickley, Hanne Elming, Rolf Steffensen, Lars Køber, Kasper Iversen
BACKGROUND: Multislice computed tomography (MSCT) is a non-invasive, less expensive, low-radiation alternative to coronary angiography (CAG) prior to valvular heart surgery. MSCT has a high negative predictive value for coronary artery disease (CAD) but previous studies of patients with valvular disease have shown that MSCT, as the primary evaluation technique, lead to re-evaluation with CAG in about a third of cases and it is therefore not recommended. If a subgroup of patients with low- to intermediate risk of CAD could be identified and examined with MSCT, it could be cost-effective, reduce radiation and the risk of complications associated with CAG...
January 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/27829015/imaging-of-orthotopic-glioblastoma-xenografts-in-mice-using-a-clinical-ct-scanner-comparison-with-micro-ct-and-histology
#19
Stefanie Kirschner, Bettina Mürle, Manuela Felix, Anna Arns, Christoph Groden, Frederik Wenz, Andreas Hug, Gerhard Glatting, Martin Kramer, Frank A Giordano, Marc A Brockmann
PURPOSE: There is an increasing need for small animal in vivo imaging in murine orthotopic glioma models. Because dedicated small animal scanners are not available ubiquitously, the applicability of a clinical CT scanner for visualization and measurement of intracerebrally growing glioma xenografts in living mice was validated. MATERIALS AND METHODS: 2.5x106 U87MG cells were orthotopically implanted in NOD/SCID/ᵞc-/- mice (n = 9). Mice underwent contrast-enhanced (300 μl Iomeprol i...
2016: PloS One
https://www.readbyqxmd.com/read/27826651/do-we-still-need-autopsy-in-times-of-modern-multislice-computed-tomography-missed-diagnoses-in-the-emergency-room
#20
S A Euler, T Kastenberger, R Attal, M Rieger, M Blauth, M Petri
INTRODUCTION: In spite of increasing quality of emergency room (ER) assessment in trauma patients and improved accuracy of modern multislice computed tomography (MSCT), the number of potentially missed diagnoses is still controversial. The aim of this study was to compare the initial findings of ER assessment and MSCT to the findings during autopsy in trauma patients not surviving the first 48 h after admission. We hypothesized that autopsy was more accurate than MSCT in diagnosing potentially fatal diagnoses...
January 2017: Archives of Orthopaedic and Trauma Surgery
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