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https://www.readbyqxmd.com/read/29779973/impact-of-device-host-interaction-on-paravalvular-aortic-regurgitation-with-different-transcatheter-heart-valves
#1
Ramón Rodríguez-Olivares, Nahid El Faquir, Zouhair Rahhab, Lennart van Gils, Ben Ren, Rafi Sakhi, Marcel L Geleijnse, Ron van Domburg, Peter P T de Jaegere, Jose L Zamorano Gómez, Nicolas M Van Mieghem
AIMS: We sought to evaluate the interaction of different aortic root phenotypes with self-expanding (SEV), balloon-expandable (BEV) and mechanically expanded (MEV) and the impact on significant aortic regurgitation. METHODS AND RESULTS: We included 392 patients with a SEV (N = 205), BEV (N = 107) or MEV (N = 80). Aortic annulus eccentricity index and calcification were measured by multi-slice CT scan. Paravalvular aortic regurgitation was assessed by contrast aortography (primary analysis) and transthoracic echocardiography (secondary analysis)...
May 6, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29770586/surgical-infection-after-posterolateral-lumbar-spine-arthrodesis-ct-analysis-of-spinal-fusion
#2
Pablo Andrés-Cano, Ana Cerván, Miguel Rodríguez-Solera, Jose Antonio Ortega, Natividad Rebollo, Enrique Guerado
OBJECTIVE: To determine the incidence of infection after instrumented lumbar spine surgery, the demographic and surgical variables associated with acute infection, and the influence of infection and debridement on the consolidation of spinal fusion. METHODS: After obtaining approval from the hospital ethics committee, an observational study was made on a prospective cohort of consecutive patients surgically treated by posterolateral lumbar spine arthrodesis (n = 139, 2005-2011)...
May 16, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29733990/flat-panel-detector-computed-tomography-fdct-guided-placement-of-external-ventricular-drains-using-the-brainlab-%C3%A2-headband-and-the-precalibrated-disposable-stylet-instrument-a-cadaveric-feasibility-study
#3
Julian Feulner, Stefan Lang, Thomas Buder, Tobias Struffert, Michael Buchfelder, Sebastian Brandner
BACKGROUND: The standard freehand method for the insertion of external ventricular drains (EVD) is associated with high rates of incorrect placement. The use of neuronavigation has been shown to reduce the rates of inaccurately positioned EVDs. We present a novel neuronavigation-based approach for EVD placement using flat panel detector computed tomography (FDCT) imaging. METHODS: Four cadaveric heads were used for neuronavigated placement of EVDs using the BrainLAB® reference Headband in combination with laser surface registration and the precalibrated disposable Stylet...
May 4, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29708403/detection-of-unknown-primary-tumor-in-patients-presented-with-brain-metastasis-by-f-18-fluorodeoxyglucose-positron-emission-tomography-computed-tomography
#4
Zehra Pınar Koç, Pelin Özcan Kara, Ahmet Dağtekin
AIM:  F-18 fluorodeoxyglucose (FDG) PET/CT has several advantages in diagnosis of cancer of unknown primary with reported incremental diagnostic value. In this study, we evaluated the patients who were presented with multiple brain metastasis and unknown primary tumor. MATERIALS & METHODS: 31 patients (17 males, 14 females; mean: 56.1 ± 14.22 years old) with diagnosis of brain metastasis according to histopathology and/or MRI were included into this retrospective study...
April 30, 2018: CNS Oncology
https://www.readbyqxmd.com/read/29685547/radiation-dose-and-image-conspicuity-comparison-between-conventional-120-kvp-and-150-kvp-with-spectral-beam-shaping-for-temporal-bone-ct
#5
Chang Rae Kim, Ji Young Jeon
OBJECTIVE: The purpose of this article is to compare radiation doses and conspicuity of anatomic landmarks of the temporal bone between the CT technique using spectral beam shaping at 150 kVp with a dedicated tin filter (150 kVp-Sn) and the conventional protocol at 120 kVp. METHODS: 25 patients (mean age, 46.8 ± 21.2 years) were examined using the 150-kVp Sn protocol (200 reference mAs using automated tube current modulation, 64 × 0.6 mm collimation, 0...
May 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29575547/guided-maxillary-sinus-floor-elevation-using-deproteinized-bovine-bone-versus-graftless-schneiderian-membrane-elevation-with-simultaneous-implant-placement-randomized-clinical-trial
#6
Waleed Fouad, Ahmed Osman, Mohammed Atef, Maha Hakam
OBJECTIVE: The aim of this study is to evaluate the analytical difference between the use of xenograft (control group) and graftless tenting (test group) technique after sinus lift procedure with simultaneous implant placement. MATERIALS AND METHODS: Seventeen patients and 20 sinuses where operated for sinus lift procedures using lateral window approach with simultaneous implant placement. Deproteinized bovine bone (Xenograft) was used as a filling material in control group while nongrafted sinus lifting was performed in the test group...
March 25, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29540942/detection-of-coronary-artery-calcification-with-nontriggered-computed-tomography-of-the-chest
#7
Gustavo Lemos Pelandré, Nathália Martins Pereira Sanches, Marcelo Souto Nacif, Edson Marchiori
Objective: To evaluate the accuracy of visual analysis and of the coronary artery calcium (CAC) score in nontriggered computed tomography (CT), in comparison with that of the CAC score in electrocardiogram-triggered CT, in identifying coronary calcification. Materials and Methods: A total of 174 patients for whom CT was indicated for CAC scoring underwent nontriggered and triggered CT in a 64-channel multislice scanner, in a single session without a change in position...
January 2018: Radiologia Brasileira
https://www.readbyqxmd.com/read/29516974/multislice-spiral-computed-tomography-in-the-differential-diagnosis-of-ground-glass-opacity
#8
Jianqiang Yu, Shiqiang Zhu, Zufeng Ge, Beilei Shen, Yazhi Shen, Chaojun Wang, Xiong Fang, Jian Dai
Objective: This study aimed to evaluate the value of multislice spiral computed tomography (CT) in differential diagnosis of benign or malignant pulmonary ground-glass opacity (GGO). Materials and Methods: A total of 68 patients with pulmonary GGO who received surgical treatment in our hospital from January 2014 to January 2017 were retrospectively analyzed. Postoperative pathology showed that there were 22 cases of benign GGO and 47 cases of malignant GGO (adenocarcinoma)...
January 2018: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29494649/the-role-of-multislice-computed-tomography-msct-angiography-in-the-diagnosis-and-therapy-of-non-occlusive-mesenteric-ischemia-nomi-could-msct-replace-dsa-in-diagnosis
#9
Sara Kammerer, Christoph Schuelke, Shoma Berkemeyer, Aglae Velasco, Walter Heindel, Michael Koehler, Boris Buerke
OBJECTIVES: Evaluation of multislice-CT (MSCT) during diagnosis and therapeutic decision-making in patients with suspected non-occlusive mesenteric ischemia (NOMI). METHODS: Retrospective, institutional review board-approved study of 30 patients (20 men, 10 women, mean age 64.6±14.2 years, range 24-87 years) undergoing biphasic abdominal MSCT followed by digital subtraction angiography (DSA) due to suspected NOMI. MSCT and DSA were qualitatively and quantitatively evaluated independently by two radiologists with respect to the possible diagnosis of NOMI...
2018: PloS One
https://www.readbyqxmd.com/read/29492174/ultralow-dose-msct-imaging-in-dental-implantology
#10
REVIEW
Gerlig Widmann, Asma'a A Al-Ekrish
Introduction: The Council Directive 2013/59 Euratom has a clear commitment for keeping medical radiation exposure as low as reasonably achievable and demands a regular review and use of diagnostic reference levels. Methods: In dental implantology, the range of effective doses for cone beam computed tomography (CBCT) shows a broad overlap with multislice computed tomography (MSCT). More recently, ultralow dose imaging with new generations of MSCT scanners may impart radiation doses equal to or lower than CBCT...
2018: Open Dentistry Journal
https://www.readbyqxmd.com/read/29485796/evaluation-of-the-head-multislice-computed-tomography-scan-in-emergency-department
#11
REVIEW
Dijana Zadravec, Tomislav Gregurić, Mia Smoljan, Matej Mustapić, Gordana Miličić, Andrijana Jović, Danijela Rubil, Daniela Tomasović, Vanja Bašić Kes
The aim of the study was to examine the prevalence of head injuries, acute stroke and brain tumors obtained from computed tomography (CT) scans in the emergency department (ED) during a one-year period. We also assessed the potential effect of seasons on the occurrence of stroke, head trauma and tumors found on CT scans, expressed in monthly intervals. This retrospective review included all patients that underwent emergency head CT from the hospital database. A total of 3888 head CT examinations were performed in adult patients presenting to ED and 1424 CT scans had at least one pathologic finding meeting diagnostic criteria for the study...
June 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29480237/3d-computed-tomography-angiography-as-a-novel-post-processing-approach-in-diagnosis-of-pediatric-malignant-bone-tumors
#12
Jun Wu, Cui Wang, Ming Li, Cong Luo, Xing Liu, Lina Xie, Ling He, Mengjia Gong, Zujie Hu, Anthony J Bleyer, Yuanyuan Zhang
OBJECTIVE: This study aimed to investigate the application of 3D computed tomography (CT) angiography with a novel post-processing technique in diagnosis of malignant bone tumors in children. METHODS: Twenty-seven pediatric patients (15 males and 12 females; average age: 10±3.4 years old, with a range from 2 months to 14 years old) with suspected bone tumors were evaluated histopathologically using 3D CT angiography and a multislice scanner. CT angiography image data were analyzed with a novel post-processing technique that included separating, fusing opacifying false-coloring, and volume rendering...
2018: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/29434687/is-fetal-type-posterior-cerebral-artery-a-risk-factor-for-intracranial-aneurysm-as-analyzed-by-multislice-ct-angiography
#13
Zhen He, Yeda Wan
Fetal-type posterior cerebral artery (FTP) is a common anatomic variation that is closely associated with intracranial aneurysm. In the present study, multislice computed tomography angiography (CTA) was performed to assess whether FTP is a risk factor for intracranial aneurysm. CTA data of 364 consecutive cases of patients who were suspected with cerebrovascular disease or intracranial aneurysm of intracranial artery from 2013 to 2016 were reviewed and the incidence rates of FTP, other variations of the circle of Willis, intracranial aneurysm and FTP with intracranial aneurysm were evaluated...
January 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434630/the-role-of-echocardiography-and-ct-angiography-in-transcatheter-aortic-valve-implantation-patients
#14
REVIEW
Emmanouil Chourdakis, Ioanna Koniari, Nicholas G Kounis, Dimitrios Velissaris, Nikolaos Koutsogiannis, Grigorios Tsigkas, Karl Eugen Hauptmann, Bruno Sontag, George Hahalis
The transcatheter aortic valve implantation (TAVI) consist an alternative treatment in patients with severe aortic stenosis. Multimodality imaging using transthoracic echocardiography (TTE) or transesophageal echocardiography (TOE) and multislice CT (MSCT) constitute cornerstone techniques for the pre-operative management, peri-procedural guidance, follow up and recognition of possible transcatheter valve related complications. CT angiography is much more accurate regarding the total definition of aortic annulus diameter and circumferential area...
January 2018: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/29420710/accuracy-and-reproducibility-of-aortic-annular-measurements-obtained-from-echocardiographic-3d-manual-and-semi-automated-software-analyses-in-patients-referred-for-transcatheter-aortic-valve-implantation-implication-for-prosthesis-size-selection
#15
Stefano Stella, Leonardo Italia, Giulia Geremia, Isabella Rosa, Francesco Ancona, Claudia Marini, Cristina Capogrosso, Manuela Giglio, Matteo Montorfano, Azeem Latib, Alberto Margonato, Antonio Colombo, Eustachio Agricola
Aims: A 3D transoesophageal echocardiography (3D-TOE) reconstruction tool has recently been introduced. The system automatically configures a geometric model of the aortic root and performs quantitative analysis of these structures. We compared the measurements of the aortic annulus (AA) obtained by semi-automated 3D-TOE quantitative software and manual analysis vs. multislice computed tomography (MSCT) ones. Methods and results: One hundred and seventy-five patients (mean age 81...
February 6, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29403579/computed-tomography-as-primary-postoperative-follow-up-after-laparoscopic-roux-en-y-gastric-bypass
#16
Tarik Delko, Diana Mattiello, Thomas Koestler, Urs Zingg, Silke Potthast
AIM: To evaluate upper abdominal computed tomography (CT) scan as primary follow-up after laparoscopic Roux-en-Y gastric bypass (LRYGB). METHODS: This prospective study was approved by the Ethical Committee of the State of Zurich, and informed consent was obtained from all patients. Sixty-one patients who underwent LRYGB received upper abdominal CT on postoperative day 1, with the following scan parameters: 0.6 mm collimation, 1.2 mm pitch, CareKV with reference 120 mAs and 120 kV, and 0...
January 28, 2018: World Journal of Radiology
https://www.readbyqxmd.com/read/29365006/multislice-ct-in-the-diagnosis-of-bronchopleural-fistula
#17
Bruno Hochhegger, Gláucia Zanetti, Edson Marchiori
No abstract text is available yet for this article.
July 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29313122/influence-of-antrum-size-on-gastric-emptying-and-weight-loss-outcomes-after-laparoscopic-sleeve-gastrectomy-preliminary-analysis-of-a-randomized-trial
#18
Meritxell Garay, Carmen Balagué, Carlos Rodríguez-Otero, Berta Gonzalo, Anna Domenech, Juan Carlos Pernas, Ignasi J Gich, Inka Miñambres, Sonia Fernández-Ananín, Eduardo M Targarona
BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) has increased in popularity in recent years as a definitive bariatric procedure. Despite its growing popularity worldwide, the surgical technique is not well standardized. There is a lack of evidence on the matter of the antrum size and its relation to gastric emptying and weight-loss outcomes. The aim of the study is to evaluate the influence of antrum size over gastric emptying and weight-loss outcomes. METHODS: Twenty-five patients were prospectively randomized according to the distance between the first firing and the pylorus: AR group (antrum resection-2 cm from the pylorus) and AP group (antrum preservation-5 cm from the pylorus)...
January 8, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29298954/computed-tomography-a-technical-review
#19
Euclid Seeram
Computed tomography (CT) is a technical and complex diagnostic imaging modality. Radiologic technologists must understand the technology well enough to optimize dose and image quality and provide excellent patient care. This article reviews essential physical principles and technical aspects of CT, including physics related to radiation attenuation and CT numbers along with general technical concepts. In addition, the article reviews multislice CT technology.
January 2018: Radiologic Technology
https://www.readbyqxmd.com/read/29249735/longitudinal-observation-of-maxillary-sinus-bony-bridges-and-septa-in-childhood
#20
Munetaka Naitoh, Hirofumi Watanabe, Kazuhito Yoshida, Hisashi Hayashi, Kenichi Gotoh, Eiichiro Ariji
The rate of septum presence in the maxillary sinus has been reported to be over 30%. It was considered that a bony bridge might change to a maxillary sinus septum with growth in a previous study using dry child skulls. In the present investigation, maxillary sinus bony bridges and septa were longitudinally observed using computed tomography (CT). Multislice CT was performed in three patients. A bony bridge was defined as a bony structure between the maxillary sinus wall and dental germ. Also, a septum was defined as a pointed bony structure in the inferior wall of the maxillary sinus...
2017: Okajimas Folia Anatomica Japonica
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