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https://www.readbyqxmd.com/read/28816957/value-and-impact-factors-of-multidetector-computed-tomography-in-diagnosis-of-preoperative-lymph-node-metastasis-in-gastric-cancer-a-prisma-compliant-systematic-review-and-meta-analysis
#1
Mingxu Luo, You Lv, Xiuyu Guo, Hongmei Song, Guoqiang Su, Bo Chen
BACKGROUND: Multidetector computed tomography (MDCT) exhibited wide ranges of sensitivities and specificities for lymph node assessment of gastric cancer (GC) in several individual studies. This present meta-analysis was carried out to evaluate the value of MDCT in diagnosis of preoperative lymph node metastasis (LNM) and to explore the impact factors that might explain the heterogeneity of its diagnostic accuracy in GC. METHODS: A comprehensive search was conducted to collect all the relevant studies about the value of MDCT in assessing LNM of GC within the PubMed, Cochrane library and Embase databases up to Feb 2, 2016...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28803719/assessment-of-aortic-valve-calcium-load-by-multidetector-computed-tomography-anatomical-validation-impact-of-scanner-settings-and-incremental-diagnostic-value
#2
Jamila Boulif, Bernhard Gerber, Alisson Slimani, Siham Lazam, Christophe de Meester, Sophie Piérard, Agnès Pasquet, Anne-Catherine Pouleur, David Vancraeynest, Gébrine El Khoury, Laurent de Kerchove, Philippe Noirhomme, Jean-Louis Vanoverschelde
OBJECTIVES: To validate aortic valve calcium (AVC) load measurements by multidetector row computed tomography (MDCT), to evaluate the impact of tube potential and slice thickness on AVC scores, to examine the accuracy of AVC load in distinguishing severe from nonsevere aortic stenosis (AS) and to investigate its effectiveness as an alternative diagnosis method when echocardiography remains inconclusive. METHODS: We prospectively studied 266 consecutive patients with moderate to severe AS who underwent MDCT to measure AVC load and a comprehensive echocardiographic examination to assess AS severity...
July 29, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28803449/prospective-comparison-between-magnetic-resonance-imaging-and-computed-tomography-in-colorectal-cancer-staging
#3
Frederick H X Koh, Ker-Kan Tan, Lynette L S Teo, Bertrand W L Ang, Yee-Liang Thian
BACKGROUND: Diffusion-weighted (DW) imaging is a functional magnetic resonance imaging (MRI) technique that detects lesions with high cellularity, such as malignant tumours. This prospective study was performed to compare the accuracy of DW-MRI with multidetector computed tomography (MDCT) in staging of colorectal cancer. METHODS: Thirty patients with histologically proven colorectal cancer were prospectively recruited. Each patient underwent both MDCT and DW-MRI of the abdomen-pelvis for primary staging...
August 13, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28801805/pulmonary-cta-in-sickle-cell-patients-quantitative-assessment-of-enhancement-quality
#4
Jeff Jensen, Tony Lin, Elliot K Fishman, Pamela T Johnson
PURPOSE: The purpose of this study was to validate the observation that pulmonary artery (PA) enhancement is often decreased in sickle cell disease (SCD) patients imaged with MDCT for suspected pulmonary embolism and determine whether contrast infusion parameters are accountable for lower enhancement levels. MATERIALS AND METHODS: Retrospective comparison of 35 adult SCD patients imaged for suspected pulmonary embolism (PE) in our emergency department using 128-slice dual source MDCT scanner to 34 age and weight matched adult controls...
August 11, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28799451/radiological-clinical-and-audiological-evaluation-of-jugular-bulb-vestibular-aqueduct-dehiscence
#5
Asli Tanrivermis Sayit, Muzaffer Elmali, Ozgur Kemal, Yuksel Terzi
OBJECTIVE: The aim of this study is to determine the prevalence of jugular bulb-vestibular aqueduct dehiscence (JBVAD) in patients undergoing temporal bone multidetector computed tomography (MDCT) and assess the relationship between JBVAD and hearing loss with the findings of audiometry. METHODS: About 1503 temporal bone MDCT scans were evaluated for the prevalence of JBVAD. Correlation of the imaging findings and audiometric data was performed. Patients were divided into two groups, those with and those without hearing loss, and were statistically compared...
August 11, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28799286/fetal-dose-conversion-factor-for-fetal-computed-tomography-examinations-a-mathematical-phantom-study
#6
Yuta Matsunaga, Ai Kawaguchi, Masanao Kobayashi, Shoichi Suzuki, Yasuki Asada, Kiyoshi Ito, Koichi Chida
This study aimed to examine the relationship between fetal dose and the dose-length product, and to evaluate the impact of the number of rotations on the fetal doses and maternal effective doses using a 320-row multidetector computed tomography unit in a wide-volume mode. The radiation doses for the pregnant woman and the fetus were estimated using ImPACT CT Patient Dosimetry Calculator software for scan lengths ranging from 176 to 352 mm, using a 320-row unit in a wide-volume mode and an 80-row unit in a helical scanning mode...
August 11, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28799113/angles-between-the-aortic-root-and-the-left-ventricle-assessed-by-mdct-are-associated-with-the-risk-of-aortic-regurgitation-after-transcatheter-aortic-valve-replacement
#7
Vincent Roule, Alexandre Placente, Rémi Sabatier, Mathieu Bignon, Vladimir Saplacan, Calin Ivascau, Paul Milliez, Farzin Beygui
OBJECTIVES: To evaluate the impact of the angles quantified by multidetector computed tomography (MDCT) between the ascending aorta's long axis and, the left ventricular inflow long axis (LVLA), or the left ventricule outflow tract long axis, and the occurrence of post-transcatheter aortic valve replacement (TAVR) aortic regurgitation (AR). METHODS: We prospectively included 136 consecutive patients who underwent a transfemoral TAVR with a preoperative MDCT. The groups were defined according to AR <2 or ≥2 assessed by echocardiography at 1 month...
August 10, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28796545/use-of-mdct-to-assess-the-results-of-bronchial-thermoplasty
#8
Matheus Zanon, Débora L Strieder, Adalberto S Rubin, Guilherme Watte, Edson Marchiori, Paulo F G Cardoso, Bruno Hochhegger
OBJECTIVE: The purpose of this study was to evaluate the use of MDCT to assess response to bronchial thermoplasty treatment for severe persistent asthma. MATERIALS AND METHODS: MDCT data from 26 patients with severe persistent asthma who underwent imaging before and after bronchial thermoplasty were analyzed retrospectively. Changes in the following parameters were assessed: total lung volume, mean lung density, airway wall thickness, CT air trapping index (attenuation < -856 HU), and expiratory-inspiratory ratio of mean lung density (E/I index)...
August 10, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28796542/cine-mri-of-tracheal-dynamics-in-healthy-volunteers-and-patients-with-tracheobronchomalacia
#9
Pierluigi Ciet, Phillip M Boiselle, Benedikt Heidinger, Eleni-Rosalina Andrinopoulou, Carl O'Donnel, David C Alsop, Diana E Litmanovich
OBJECTIVE: Bronchoscopy and MDCT are routinely used to assess tracheobronchomalacia (TBM). Recently, dynamic MRI (cine MRI) has been proposed as a radiation-free alternative to MDCT. In this study, we tested cine MRI assessment of airway dynamics during various breathing conditions and compared cine MRI and MDCT measurements in healthy volunteers and patients with suspected TBM. CONCLUSION: Cine MRI was found to be a technically feasible alternative to MDCT for assessing central airway dynamics...
August 10, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28780680/mri-for-hepatocellular-carcinoma-a-primer-for-magnetic-resonance-imaging-interpretation
#10
REVIEW
Tina Sanghvi, James Boyum, Ben Spilseth, Robben Schat, Heather Estby, Andrew Taylor
Hepatocellular carcinoma is among the most prevalent solid organ cancers, and, unlike many cancers, may be diagnosed non-invasively by imaging criteria [1] with the preferred modality recently shifting from multiphasic computed tomography (MDCT) to magnetic resonance imaging (MRI). The purpose of this article is to help facilitate radiologists and radiology trainees in the transition to MRI by providing a step-wise approach to exam interpretation to improve the MRI detection of HCC. A methodical, consistent approach to navigating a HCC screening MRI exam, in conjunction with the LI-RADS framework for characterization, should lead to improved HCC detection and diagnosis...
August 5, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28770287/duodenal-invasion-by-pancreatic-adenocarcinoma-mdct-diagnosis-of-an-aggressive-imaging-phenotype-and-its-clinical-implications
#11
REVIEW
Bhavik N Patel, Eric W Olcott, R Brooke Jeffrey
Despite advances in oncologic and imaging technology, pancreatic ductal adenocarcinoma remains a highly deadly disease. The only curative option, pancreaticoduodenectomy or pancreatectomy, carries a significant morbidity. Current imaging plays a role in pre-operative staging to determine the probability of achieve disease-free margins. However, a small but not insignificant number of pancreatic cancers have a relatively higher aggressive biology, despite being resectable based on traditional criteria. Recently, imaging biomarkers that serve as a surrogate for tumors with such aggressive phenotype have been described...
August 2, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28767732/influence-of-exposure-parameters-and-iterative-reconstruction-on-automatic-airway-segmentation-and-analysis-on-mdct-an-ex-vivo-phantom-study
#12
Patricia Leutz-Schmidt, Oliver Weinheimer, Bertram J Jobst, Julien Dinkel, Jürgen Biederer, Hans-Ulrich Kauczor, Michael U Puderbach, Mark O Wielpütz
OBJECTIVES: To evaluate the influence of exposure parameters and raw-data-based iterative reconstruction (IR) on computer-aided segmentation and quantitative analysis of the tracheobronchial tree on multidetector computed tomography (MDCT). MATERIAL AND METHODS: 10 porcine heart-lung-explants were mounted inside a dedicated chest phantom. MDCT was performed at 120kV and 80kV with 120, 60, 30 and 12 mAs each. All scans were reconstructed with filtered back projection (FBP) or IR, resulting in a total of 160 datasets...
2017: PloS One
https://www.readbyqxmd.com/read/28754885/computed-tomography-ct-findings-of-pulmonary-hydatid-cysts-in-children-and-the-factors-related-to-cyst-rupture
#13
Cihan Akgul Ozmen, Serdar Onat
BACKGROUND The lungs are the most common site of hydatid cysts in children. Rupture is the main complication of cysts causing morbidity and mortality. In this study we aimed to comprehensively describe the CT signs for cysts and analyze the relationship of cyst ruptures to the diameter and location of cyst. MATERIAL AND METHODS A total of 145 cysts from 102 patients, aged 17 years or younger, who underwent a multi-detector computed tomography (MDCT) evaluation and had surgically proven pulmonary hydatid disease were included retrospectively...
July 29, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28754326/diagnosis-of-acute-overt-gastrointestinal-bleeding-with-ct-angiography-comparison-of-the-diagnostic-performance-of-individual-acquisition-phases
#14
E Shotar, P Soyer, M Barat, R Dautry, M Pocard, V Placé, M Camus, C Eveno, M Barret, A Dohan
PURPOSE: To compare the respective values of arterial phase, portal venous phase and combination of phases using 64-section multidetector computed tomography (MDCT) for diagnosing acute overt gastrointestinal bleeding (AOGIB). PATIENTS AND METHODS: Forty-nine patients with AOGIB were included. There were 30 men and 19 women, with a mean age of 65.4±15.6 (SD) years [range, 34-91years]. Two observers reviewed MDCT examinations in consensus for presence of active bleeding, location of bleeding site and nature of causative lesion...
July 25, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28753607/total-and-differential-wbc-counts-are-related-with-coronary-artery-atherosclerosis-and-increase-the-risk-for-cardiovascular-disease-in-koreans
#15
Jung Hee Kim, Soo Lim, Kyong Soo Park, Hak Chul Jang, Sung Hee Choi
OBJECTIVE: Inflammation is a key mechanism of atherosclerosis. White blood cells (WBCs) play a pivotal role in the inflammatory process. We investigated the relationships between total and differential WBC counts and multi-detector cardiac computed tomography (MDCT) findings, as well as the risk of cardiovascular disease in asymptomatic patients in Korea. MATERIALS AND METHODS: We recruited asymptomatic men (n = 7274) and women (n = 5478) aged ≥30 years who were free of known coronary heart disease...
2017: PloS One
https://www.readbyqxmd.com/read/28753555/development-and-validation-of-a-preoperative-prediction-model-for-colorectal-cancer-t-staging-based-on-mdct-images-and-clinical-information
#16
Sha Sa, Jing Li, Xiaodong Li, Yongrui Li, Xiaoming Liu, Defeng Wang, Huimao Zhang, Yu Fu
OBJECTIVES: This study aimed to establish and evaluate the efficacy of a prediction model for colorectal cancer T-staging. RESULTS: T-staging was positively correlated with the level of carcinoembryonic antigen (CEA), expression of carbohydrate antigen 19-9 (CA19-9), wall deformity, blurred outer edges, fat infiltration, infiltration into the surrounding tissue, tumor size and wall thickness. Age, location, enhancement rate and enhancement homogeneity were negatively correlated with T-staging...
July 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28751975/comparison-between-ct-net-enhancement-and-pet-ct-suv-for-n-staging-of-gastric-cancer-a-case-series
#17
Amato Antonio Stabile Ianora, Michele Telegrafo, Nicola Maria Lucarelli, Valentina Lorusso, Arnaldo Scardapane, Artor Niccoli Asabella, Marco Moschetta
BACKGROUND: The therapeutic approach of gastric cancer strictly depends on TNM staging mainly provided by CT and PET/CT. However, the lymph node size criterion as detected by MDCT causes a poor differential diagnosis between reactive and metastatic enlarged lymph nodes with low specificity values. Our study aims to compare 320-row CT Net enhancement and fluorine-18 fluoro-2-deoxy-d-glucose positron emission tomography/computed tomography (F-FDG PET/CT) SUV for N staging of gastric cancer...
September 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28749170/multidetector-computedtomography-in-detection-of-troublesome-posterior-sectoral-hepatic-duct-communicating-with-cystic-duct
#18
Tatsuaki Sumiyoshi, Yasuo Shima, Takehiro Okabayashi, Yasuhiro Hata, Yoshihiro Noda, Michihiko Kouno, Kenta Sui, Yuji Negoro, Taijiro Sueda
OBJECTIVE: To investigate whether multiple detector computed tomography (MDCT) could detect troublesome aberrant posterior sectoral hepatic duct (PHD) communicating with cystic duct (CD). METHODS: The most troublesome bile duct anomaly during cholecystectomy is an aberrant PHD communicating with CD. It has been suggested that an unenhanced small duct between Rouviere's sulcus and CD on MDCT could be coincident to an aberrant PHD communicating with CD. A total of 224 patients who underwent laparotomy with complete lymph node dissection in the hepatoduodenal ligament for hepatobiliary or pancreatic tumor were enrolled...
July 27, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28747616/assessment-of-non-invasive-chronic-fungal-rhinosinusitis-by-cone-beam-ct-comparison-with-multidetector-ct-findings
#19
Tomohiko Yamauchi, Akiko Tani, Shuji Yokoyama, Hiroshi Ogawa
OBJECTIVE: To investigate the accuracy of cone beam CT (CBCT) to diagnose non-invasive chronic fungal rhinosinusitis. METHODS: Preoperative CT evaluation of non-invasive chronic fungal rhinosinusitis was performed by CBCT (3D Accuitomo 170(®)) and traditional multidetector CT (MDCT) (Aquilion 32(®)) in 13 and 38 patients with non-invasive chronic fungal maxillary sinusitis, respectively, in different facilities. Detection of intrasinus calcification was compared between these two groups...
July 26, 2017: Fukushima Journal of Medical Science
https://www.readbyqxmd.com/read/28745702/-differential-approach-for-chest-wall-reconstruction-for-pectus-excavatum-in-adults
#20
A A Pechetov, Yu S Esakov, G F Gubaydullina, M A Makov, T N Khlan
AIM: To perform the prospective non-randomized single-center trial of pectus excavatum correction in adults. MATERIAL AND METHODS: For the period March 2012 - March 2016 64 patients aged 18-44 years were treated. Median age was 23 years. Male/female ratio was 41/23. All patients were included into standard survey protocol: chest MDCT, MRI of thoracic spine, pulmonary function test, echocardiography. Quality of life and complications rate after the Nuss procedure (n=50, 78...
2017: Khirurgiia
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