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Floyd W Timmermans, Pèdrou B Westland, Stefan Hummelink, Joep Schreurs, Marijn Hameeteman, Dietmar J O Ulrich, Nicholas J Slater
BACKGROUND: The deep inferior epigastric artery perforator (DIEP) flap is one of the most common techniques for breast reconstruction. Body mass index (BMI) is considered as an important predictor of donor site healing complications such as wound dehiscence. The use of computed tomography (CT) proved to be a precise and objective method to assess visceral adipose tissue. It remains unclear whether quantification of visceral fat provides more accurate predictions of abdominal wound healing complications than BMI...
March 28, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Lin Qiu, Hui Tan, Dengfeng Cheng, Hongcheng Shi
Coronary artery disease (CAD) is a major cause of death worldwide. It is significantly important to assess the coronary lesion and its pathophysiological relevance comprehensively. Coronary computed tomography angiography (CTA) or myocardial perfusion imaging alone suffers from some limitations in the evaluation of CAD. Through the integration and spatial colocalization of complementary morphological and functional information, the results of published hybrid single-photon emission computed tomography (SPECT)/CTA studies in patients with CAD are promising for detecting functionally relevant coronary artery lesion and evaluating the relationship between diseased coronary artery, coronary artery anomaly, myocardial bridging, or coronary calcification and myocardial ischemia...
April 12, 2018: Nuclear Medicine Communications
Ho Jun Yi, Jae Hoon Sung, Dong Hoon Lee, Seung Ho Yang, Jae Taek Hong
OBJECTIVE Volume perfusion CT (VPCT) with added CT angiography (CTA)-like reconstruction from VPCT source data (VPCTA) can reveal multiple intracranial parameters. The authors examined the usefulness of VPCTA in terms of reducing the in-hospital time delay for mechanical thrombectomy. METHODS A total of 180 patients who underwent mechanical thrombectomy at the authors' institution between January 2014 and March 2017 were divided into 2 groups: a CTA-based thrombectomy decision group (group 1: CTA) and a VPCTA-based decision group (group 2: VPCTA)...
April 13, 2018: Journal of Neurosurgery
Jae Hang Lee, Jin-Ho Choi, Eung-Joong Kim
BACKGROUND: Although systemic inflammatory responses are common after endovascular aortic repair (EVAR), its etiology remains uncertain. It is normally well tolerated and has a benign course. This study was undertaken to investigate the possible etiology of post-EVAR inflammation by measuring volumes of chronic mural thrombus and fresh thrombus. METHODS: The subjects of this study included 34 patients who underwent EVAR from February 2012 to July 2017. Inflammatory markers in all the patients were evaluated before surgery, using the highest value among the laboratory data up to 5 days after surgery, and postoperative computed tomographic angiography (CTA) was taken for all of them before their discharging...
April 12, 2018: Journal of Cardiothoracic Surgery
Farhana Jabeen, Zara Hamid, Wadood Abdul, Sanaa Ghouzali, Abid Khan, Saif Ur Rehman Malik, Mansoor Shaukat Khan, Sarfraz Nawaz
In health sector, trust is considered important because it indirectly influences the quality of health care through patient satisfaction, adherence and the continuity of its relationship with health care professionals and the promotion of accurate and timely diagnoses. One of the important requirements of TRSs in the health sector is rating secrecy, which mandates that the identification information about the service consumer should be kept secret to prevent any privacy violation. Anonymity and trust are two imperative objectives, and no significant explicit efforts have been made to achieve both of them at the same time...
2018: PloS One
Masaaki Okutsu, Takeshi Horio, Hisataka Tanaka, Maki Akiyama, Niro Okimoto, Toshiyuki Tsubouchi, Kenji Kawajiri, Yasuhiro Ohashi, Satoru Sumitsuji, Yuji Ikari
Attenuated plaque on intravascular ultrasound (IVUS) and low attenuation plaque on computed tomography angiography (CTA) are associated with no-reflow phenomenon during percutaneous coronary intervention (PCI). However, evaluation by a single modality has been unable to satisfactorily predict this phenomenon. We investigated whether the combination of IVUS and CTA findings can ameliorate the predictive potential for no-reflow phenomenon after stent implantation during PCI in stable coronary artery disease (CAD)...
April 11, 2018: Heart and Vessels
Viktor Zsolt Kovari, Ferenc Pecsi, Mate Cs Janvari, Robert Veres
One blunt abdominal aortic disruption (BAAD) and one blunt thoracic aortic injury (BTAI) case are presented. Both aortic injuries were combined with spinal fractures. In the BAAD case the aortic pseudoaneurysm manifested just above the lumbar fracture while in the BTAI case the aortic injury appeared several vertebras below the thoracal fracture site, suggesting different mechanisms in the aortic wall damage. In both cases the aortic wall first was sealed, successfully, by endovascularly-placed stents, meaning the risks of open aortic reconstructive surgery could be avoided...
December 2017: Trauma Case Reports
Bastian O Sabel, Jessica L Plum, Michael Czihal, Christian Lottspeich, Frank Schönleben, Gabor Gäbel, Regina Schinner, Franziska Schoeppe, Felix G Meinel
OBJECTIVES: The aim was to evaluate the effect of structured reporting of computed tomography angiography (CTA) runoff studies on clarity, completeness, clinical relevance, usefulness of the radiology reports, further testing, and therapy in patients with known or suspected peripheral arterial disease. METHODS: Conventional reports (CRs) and structured reports (SRs) were generated for 52 patients who had been examined with a CTA runoff examination of the lower extremities...
April 4, 2018: European Journal of Vascular and Endovascular Surgery
Chunyan Ge, Wangmiao Zhao, Hong Guo, Zhaosheng Sun, Wanzeng Zhang, Xiaowei Li, Xuehui Yang, Jinrong Zhang, Dongxin Wang, Yi Xiang, Jianhui Mao, Wenchao Zhang, Hao Guo, Yazhao Zhang, Jianchao Chen
OBJECTIVES: Surgical treatment is widely used for haematoma removal in spontaneous intracerebral haemorrhage (ICH) patients, but there is controversy about the selection of surgical methods. The CT angiography (CTA) spot sign has been proven to be a promising factor predicting haematoma expansion and is recommended as an entry criterion for haemostatic therapy in patients with ICH. This trial was designed to evaluate the clinical efficacy of two surgical methods (haematoma removal by craniotomy and craniopuncture combined with urokinase infusion) for patients in the early stage (≤6h from symptom onset) of spontaneous ICH with a moderate haematoma volume (30 ml - 60 ml)...
April 3, 2018: Clinical Neurology and Neurosurgery
Marinus J Becks, Rashindra Manniesing, Jeroen Vister, Sjoert A H Pegge, Stefan C A Steens, Ewoud J van Dijk, Mathias Prokop, Frederick J A Meijer
BACKGROUND AND PURPOSE: To evaluate whether brain CT perfusion (CTP) aids in the detection of intracranial vessel occlusion on CT angiography (CTA) in acute ischemic stroke. MATERIALS AND METHODS: Medical-ethical committee of our hospital was obtained and informed consent was waived. Patients suspected of acute ischemic stroke who underwent non-contrast CT(NCCT), CTA and whole-brain CTP in our center in the year 2015 were included. Three observers with different levels of experience evaluated the imaging data of 110 patients for the presence or absence of intracranial arterial vessel occlusion with two strategies...
April 3, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Richte C L Schuurmann, Simon P Overeem, Kim van Noort, Bastiaan A de Vries, Cornelis H Slump, Jean-Paul P M de Vries
PURPOSE: To validate a novel methodology employing regular postoperative computed tomography angiography (CTA) scans to assess essential factors contributing to durable endovascular aneurysm repair (EVAR), including endograft deployment accuracy, neck adaptation to radial forces, and effective apposition of the fabric within the aortic neck. METHODS: Semiautomatic calculation of the apposition surface between the endograft and the infrarenal aortic neck was validated in vitro by comparing the calculated surfaces over a cylindrical silicon model with known dimensions on CTA reconstructions with various slice thicknesses...
April 1, 2018: Journal of Endovascular Therapy
M Kappelhof, H A Marquering, O A Berkhemer, J Borst, A van der Lugt, W H van Zwam, J A Vos, G Lycklama À Nijeholt, C B L M Majoie, B J Emmer
BACKGROUND AND PURPOSE: The absence of opacification on CTA in the extracranial ICA in acute ischemic stroke may be caused by atherosclerotic occlusion, dissection, or pseudo-occlusion. The latter is explained by sluggish or stagnant flow in a patent artery caused by a distal intracranial occlusion. This study aimed to explore the accuracy of CTA for differentiating pseudo-occlusion from true occlusion of the extracranial ICA. MATERIALS AND METHODS: All patients from the Multicenter Randomized Clinical Trial of Endovascular Treatment for Acute Ischemic Stroke in the Netherlands (MR CLEAN) with an apparent ICA occlusion on CTA and available DSA images were included...
April 5, 2018: AJNR. American Journal of Neuroradiology
Gaston A Rodriguez-Granillo, Exequiel Reynoso, Carlos Capunay, Jimena Carpio, Patricia Carrascosa
BACKGROUND: To explore the relationship between coronary and extra-coronary atherosclerotic plaque burden with total and regional fat depots among patients undergoing ECG-gated aortic computed tomography angiography (CTA). METHODS: The subjects of this study comprised a cohort of consecutive patients who underwent ECG-gated thoracoabdominal CTA. We assessed the number of coronary segments with plaques (segment-involvement score, SIS); and the extra-coronary atherosclerotic plaque burden, comprising the aorta and supra-aortic trunks, iliofemoral arteries, and visceral arteries (extra-coronary SS)...
June 1, 2018: International Journal of Cardiology
Christopher Lowe, Vivak Hansrani, Manmohan Madan, George A Antoniou
INTRODUCTION: To investigate the presentation, aetiology, management and outcomes of type IIIb endoleak after endovascular aneurysm repair (EVAR). EVIDENCE ACQUISITION: Electronic bibliographic databases were searched to identify published reports of type IIIb endoleak after EVAR, according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards. EVIDENCE SYNTHESIS: In total 33 articles were identified reporting on a total of 50 patients spanning 19 years of EVAR (1998-2017)...
April 3, 2018: Journal of Cardiovascular Surgery
Esteban Piccinini, Jimena S Tuninetti, Joseba Irigoyen Otamendi, Sergio E Moya, Marcelo Ceolín, Fernando Battaglini, Omar Azzaroni
Interfacial supramolecular architectures displaying mesoscale organized components are of fundamental importance for developing materials with novel or optimized properties. Nevertheless, engineering the multilayer assembly of different building blocks onto a surface and exerting control over the internal mesostructure of the resulting film is still a challenging task in materials science. In the present work we demonstrate that the integration of surfactants (as mesogenic agents) into layer-by-layer (LbL) assembled polyelectrolyte multilayers offers a straightforward approach to control the internal film organization at the mesoscale level...
April 4, 2018: Physical Chemistry Chemical Physics: PCCP
Iain Nicholas Roy, Tze Yuan Chan, Gabriela Czanner, Steve Wallace, Srinivasa Rao Vallabhaneni
INTRODUCTION: Diagnosis of endoleaks is imperative to prevent failure of endovascular aneurysm repairs (EVARs). The gold standard for diagnosis of endoleaks is catheter-directed subtraction angiography, which is not a practicable choice for surveillance. CT angiography (CTA) is the historical surveillance modality of choice. Concerns over cost, potential nephrotoxicity of contrast agents and repeated radiation exposure led to colour duplex ultrasound scan (CDUS) becoming an established alternative...
April 3, 2018: BMJ Open
Benedikt Reutersberg, Matthias Trenner, Bernhard Haller, Sarah Geisbüsch, Christian Reeps, Hans-Henning Eckstein
OBJECTIVE: Acute type B aortic dissections (TBADs) can have immediate or delayed complications within the first 2 weeks. Because the majority of clinical series retrospectively categorized TBAD, the incidence and outcome of delayed complications in initially uncomplicated TBAD within the first 14 days are not well described. METHODS: We retrospectively analyzed 86 patients (78% male; age, 62.5 ± 13 years) with acute TBAD treated consecutively between January 2004 and May 2016 at a tertiary referral center...
March 31, 2018: Journal of Vascular Surgery
Karen López-Linares, Nerea Aranjuelo, Luis Kabongo, Gregory Maclair, Nerea Lete, Mario Ceresa, Ainhoa García-Familiar, Iván Macía, Miguel A González Ballester
Computerized Tomography Angiography (CTA) based follow-up of Abdominal Aortic Aneurysms (AAA) treated with Endovascular Aneurysm Repair (EVAR) is essential to evaluate the progress of the patient and detect complications. In this context, accurate quantification of post-operative thrombus volume is required. However, a proper evaluation is hindered by the lack of automatic, robust and reproducible thrombus segmentation algorithms. We propose a new fully automatic approach based on Deep Convolutional Neural Networks (DCNN) for robust and reproducible thrombus region of interest detection and subsequent fine thrombus segmentation...
March 27, 2018: Medical Image Analysis
Amanda R Sergesketter, Bryan J Pyfer, Brett T Phillips, Ruya Zhao, Scott T Hollenbeck
BACKGROUND:  Perforator mapping with computed tomography angiography (CTA) prior to autologous breast reconstruction reduces donor-site morbidity and operative time, but is costly. The aim of this study was to evaluate whether pre-existing CT scans could be used for dominant perforator identification before autologous reconstruction. METHODS:  We identified all female patients who underwent mastectomy with immediate or delayed breast reconstruction with abdominal free flaps at a single institution between 2006 and 2016...
April 1, 2018: Journal of Reconstructive Microsurgery
Mengmeng Yu, Yonghong Zhao, Wenbin Li, Zhigang Lu, Meng Wei, Wenxiao Zhou, Jiayin Zhang
OBJECTIVES: To study the diagnostic performance of the ratio between the Duke jeopardy score (DJS) and the minimal lumen diameter (MLD) (DJS/MLDCT ratio) as assessed by coronary computed tomographic angiography (CTA) for differentiating functionally significant from non-significant coronary artery stenoses, with reference to invasive fractional flow reserve (FFR). METHODS: Patients who underwent both coronary CTA and FFR measurement during invasive coronary angiography (ICA) within 2 weeks were retrospectively included in the study...
March 2, 2018: Journal of Cardiovascular Computed Tomography
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