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Perforator imaging

Kazuha Kizaki, Soshi Uchida, Fumiharu Yamashita, Manabu Tsukamoto, Kagaku Azuma
Knee osteoarthritis (OA) is one of the most common musculoskeletal diseases and osteophytes area frequent radiographic feature of knee OA. The osteophyte structure in knee OA, however, is not well elucidated. This study aimed to clarify the three-dimensional microstructural characteristics of osteophytes in the medial compartment of the knee in knee OA patients using micro-computed tomography (micro-CT). We hypothesized that the morphology of osteophytes would differ from that of the neighboring normal cancellous bones...
August 16, 2018: Clinical Rheumatology
Laura Josephine Cheetham, Edwin Mitchell
Two previously fit and healthy males with acute onset dyspnoea and respiratory failure required invasive ventilation for respiratory failure. Insertion and correct positioning of nasogastric tubes (NGT) proved to be difficult repeatedly in both cases over the course of a number of days. Repeated imaging found NGT tips sited in varied, atypical positions including extension into the hemithoraces. Delineation of repeated malpositioned NGTs identified oesophageal perforations in the case of both patients, one with fistulation into the right pleura and the other into the left pleura...
August 16, 2018: BMJ Case Reports
Akhil K Seth, Pieter G L Koolen, Steven M Sultan, Bernard T Lee, Heather A Erhard, David T Greenspun
BACKGROUND:  The abdomen remains the most popular and reliable donor site for autologous breast reconstruction. Some patients, however, lack sufficient tissue to recreate an aesthetic breast mound using a single-pedicle, deep inferior epigastric perforator (DIEP) flap, particularly when matching a contralateral native breast. The amount of abdominal skin and/or soft tissue reliably supplied by one vascular pedicle is frequently insufficient to adequately restore the breast skin envelope and "footprint...
August 15, 2018: Journal of Reconstructive Microsurgery
Augusto Zani, Nigel J Hall, Abidur Rahman, Francesco Morini, Alessio Pini Prato, Florian Friedmacher, Antti Koivusalo, Ernest van Heurn, Agostino Pierro
AIM:  To define patterns in the management of pediatric appendicitis. METHODS:  A total of 169 delegates from 42 (24 European) countries completed a validated survey administered at the EUPSA 2017 annual congress. RESULTS:  In the work-up of children with suspected acute appendicitis, most surgeons rely on full blood count (92%), C-reactive protein (82%), and abdominal ultrasonography (76%), but rarely on computed tomography scans or magnetic resonance imaging...
August 15, 2018: European Journal of Pediatric Surgery
Harry Wang, Vivek Batra
Pneumoperitoneum is often associated with surgical complications or intra-abdominal sepsis. While commonly deemed a surgical emergency, pneumoperitoneum in a minority of cases does not involve a viscus perforation or require urgent surgical management; these cases of "spontaneous pneumoperitoneum" can stem from a variety of etiologies. We report a case of a 72-year-old African American male with a history of metastatic pancreatic adenocarcinoma who presented with new-onset abdominal distention and an incidentally discovered massive pneumoperitoneum with no clear source of perforation on surveillance imaging...
June 11, 2018: Curēus
Alfredo Illanes, Axel Boese, Iván Maldonado, Ali Pashazadeh, Anna Schaufler, Nassir Navab, Michael Friebe
We propose a new and complementary approach to image guidance for monitoring medical interventional devices (MID) with human tissue interaction and surgery augmentation by acquiring acoustic emission data from the proximal end of the MID outside the patient to extract dynamical characteristics of the interaction between the distal tip and the tissue touched or penetrated by the MID. We conducted phantom based experiments (n = 955) to show dynamic tool/tissue interaction during tissue needle passage (a) and vessel perforation caused by guide wire artery perforation (b)...
August 13, 2018: Scientific Reports
Leah Schoel, Ilan I Maizlin, Tal Koppelmann, Chinwendu Onwubiko, Michelle Shroyer, Ann Douglas, Robert T Russell
BACKGROUND: Data from the American College of Surgeons National Surgical Quality Improvement Program identified our hospital as an outlier for preoperative computed tomography (CT) use in the diagnosis of acute appendicitis in children. We performed a quality improvement project to reduce this utilization in favor of ultrasound-based diagnoses (ultrasonography [US]) through creation and implementation of an evidence-based appendicitis algorithm. METHODS: Over a 2-y period (1 y preceding and 1 y following institution of the algorithm), the clinical information of all pediatric patients operated on for suspicion of acute appendicitis following imaging studies in our institution was collated...
October 2018: Journal of Surgical Research
Fabiola Aguilera, Tajudeen O Dabiri, Daniel T Farkas
Perforation of the gastrointestinal tract may present with abdominal pain and imaging demonstrating pneumoperitoneum. These findings usually require exploratory laparotomy for diagnosis and treatment. Tubo-ovarian abscess (TOA) is a complication of pelvic inflammatory disease presenting as an encapsulated inflammatory mass, but it can occasionally involve other pelvic organs. TOA is most commonly seen in females of reproductive age. Here we report a case of a 63-year-old female presenting with abdominal pain, fever and vomiting...
August 2018: Journal of Surgical Case Reports
Ewa Matuszczak, Marta Komarowska, Marzena Tylicka, Wojciech Dębek, Ewa Gorodkiewicz, Anna Tokarzewicz, Anna Sankiewicz, Adam Hermanowicz
BACKGROUND: Cathepsin B (CatB) belongs to a family of lysosomal cysteine proteases and plays an important role in intracellular proteolysis. OBJECTIVES: The concentration of CatB and 20S proteasome was evaluated in the serum of children with appendicitis, before and after surgery, on a basis of an innovative method for determining biomolecules concentration - surface plasmon resonance imaging (SPRI) biosensor. MATERIAL AND METHODS: Forty-two children with acute appendicitis, who were treated at the Department of Pediatric Surgery (Medical University of Bialystok, Poland), were randomly included into the study (age: 5-17 years, mean age: 11...
August 9, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Carla Silveira, Livia Benigni, Kaye Gugich, Janet Kovak McClaran
Case summary: A 9-year-old male neutered domestic shorthair cat was presented with a 2 day history of anorexia and vomiting. A minimum database, including a complete blood count, serum biochemistry profile and urinalysis were unremarkable apart from a toxic neutrophilic left shift and borderline proteinuria. Abdominal ultrasound revealed intramural gas entrapment with thinning of the gastric wall, a hypoechoic pancreas, peritoneal fluid and a small volume of peritoneal gas along with a hyperechoic mesentery...
July 2018: JFMS Open Reports
Nazife Dinc, J Quick-Weller, S Tritt, J Konczalla, J Mersmann, M Bruder, E Herrmann, V Seifert, C Senft
The basilar artery (BA), as a reference vessel for laboratory investigations of cerebral vasospasm (CVS) in many experimental models, warrants a sufficient blood supply despite hemodynamic changes during CVS. In a prospective evaluation study, we analyzed  patients who were admitted to our department with subarachnoid hemorrhage (SAH) for the occurrence and sequelae of CVS. Specifically, we sought to identify patients with CVS of the BA. As per institutional protocol, all patients with CVS detected in the posterior circulation had magnetic resonance imaging (MRI) examinations instead of CTA...
August 7, 2018: Neurosurgical Review
M Cavaliere, Antonella Miriam Di Lullo, E Cantone, G Scala, A Elefante, C Russo, L Brunetti, G Motta, M Iengo
PURPOSE: To diagnose cholesteatoma when it is not visible through tympanic perforation, imaging techniques are necessary. Recently, the combination of computed tomography and magnetic resonance imaging has proven effective to diagnose middle ear cholesteatoma. In particular, diffusion weighted images have integrated the conventional imaging for the qualitative assessment of cholesteatoma. Accordingly, the aim of this study was to obtain a quantitative analysis of cholesteatoma calculating the apparent diffusion coefficient value...
August 7, 2018: European Archives of Oto-rhino-laryngology
Mirjam Ploeg, Claudia M G Keyzer-Dekker, Cornelius E J Sloots, Cornelis P van de Ven, Conny Meeussen, Rene M H Wijnen, John Vlot
BACKGROUND:  In 2011, we implemented a new video-based system for quality control of laparoscopic pyloromyotomy. More than 3 years later, we evaluated how the implementation had gone and assessed its usability in predicting postoperative outcomes. METHODS:  Four key point images or short video-segments were to be recorded perioperatively: prepyloromyotomy, parallel-mobility testing, perforation testing, and postpyloromyotomy. Data of all 134 patients undergoing laparoscopic pyloromyotomy from September 2011 to December 2014 were analyzed retrospectively...
August 7, 2018: European Journal of Pediatric Surgery
Miguel Cardoso, Maria Dos Anjos Pires, Vitor Correlo, Rui Reis, Manuel Paulo, Carlos Viegas
Introduction: Biodentine has been scarcely studied as a furcation perforation (FP) repair material, mostly by in vitro methodologies. This animal study aimed to compare the histological responses, radiographic, and micro-computed tomographic (micro-CT) outcomes after FP repair with Biodentine or ProRoot MTA (MTA) in dogs' teeth. Methods and Materials: Fifty teeth from five dogs were divided into 4 groups: MTA ( n =20, FP repaired with ProRoot MTA), BDT ( n =20, FP repaired with Biodentine), PC ( n =5, positive control, FP without repair) and NC ( n =5, negative control, without perforation)...
2018: Iranian Endodontic Journal
Jennifer-Magdalena Masch, Heinz Steffens, Joachim Fischer, Johann Engelhardt, Jasmine Hubrich, Jan Keller-Findeisen, Elisa D'Este, Nicolai T Urban, Seth G N Grant, Steffen J Sahl, Dirk Kamin, Stefan W Hell
Extending superresolution fluorescence microscopy to living animals has remained a challenging frontier ever since the first demonstration of STED (stimulated emission depletion) nanoscopy in the mouse visual cortex. The use of fluorescent proteins (FPs) in in vivo STED analyses has been limiting available fluorescence photon budgets and attainable image contrasts, in particular for far-red FPs. This has so far precluded the definition of subtle details in protein arrangements at sufficient signal-to-noise ratio...
August 6, 2018: Proceedings of the National Academy of Sciences of the United States of America
George S Georgiadis, Christos Argyriou, Andreas Koutsoumpelis, Fotios Konstantinou, Pelagia Chloropoulou, Ioannis Chrisafis, Vasileios Souftas
PURPOSE: Although surgical resection and graft replacement therapy for thoracic aortic aneurysms has advanced greatly over the last 20 years, significant perioperative morbidity and mortality still occur, particularly in patients considered high risk due to significant coexisting medical illness or previous operations performed for the treatment of intrathoracic disease. CASE REPORT: The case described is that of a patient with a giant (13.8cm) symptomatic descending thoracic aorta (DTA) aneurysm, previously treated endovascularly 15 years ago...
August 3, 2018: Annals of Vascular Surgery
Daizo Yaguchi, Motoshi Ichikawa, Hayata Kimura, Masao Ito, Kazuko Watanabe
Chronic expanding hematoma (CEH) is a rare disease that can develop in any region of the body, but it most frequently develops in the thorax. When intrathoracic CEH is left untreated, gradually expanding hematoma can be life-threatening, leading to respiratory failure or hemoptysis. We encountered an 89-year-old man with cardiopulmonary arrest on arrival. He had been healthy, and it was unclear whether CEH had previously been detected. A very large mass was observed on chest computed tomography (CT), but the cause of death could not be determined...
August 6, 2018: Journal of Forensic Sciences
Juan J Sánchez-Rodríguez, Ana C Utrillas-Martínez, Joana San Antón-Beranoaguirre, Alberto A Moreno-Olivieri, José M Del Val-Gil
Antecedentes: La neumatosis quística intestinal es una condición infrecuente, caracterizada por la formación de quistes de contenido gaseoso debajo de la mucosa y la serosa intestinales. Caso clínico: Mujer de 84 años, con antecedente de artritis reumatoide en tratamiento inmunosupresor, intervenida hace 2 años por neumoperitoneo, con diagnóstico de diverticulosis yeyunal y enfisema mesentérico, acude con cuadro de dolor abdominal difuso de 2 días de evolución, sin otra sintomatología...
2018: Cirugia y Cirujanos
Duy T Nguyen, Matthew Zipse, Ryan T Borne, Lijun Zheng, Wendy S Tzou, William H Sauer
OBJECTIVES: Given a paucity of data, the aim of this study was to define predictors of steam pops (SPs) during open-irrigated radiofrequency ablation (RFA). BACKGROUND: SPs during RFA can lead to dire consequences, including perforation and stroke. METHODS: In an ex vivo bovine myocardium model, open-irrigated RFA was applied at 50 W for 60 s; intracardiac echocardiographic images for RFA with and without SPs was compared. Using an in vivo porcine model, open-irrigated RFA was applied at 50 W for 60 s, and RFA parameters of SPs were analyzed...
April 2018: JACC. Clinical Electrophysiology
Oliver Soto Granados, Marcos Devanir Silva da Costa, Bruno Lourenço Costa, Kléber González-Echeverría, Samantha Lorena Paganelli, Ricardo Lourenço Caramanti, Helbert Palmiero, Feres Chaddad-Neto
In the last years, a shift from the microsurgical treatment to an endovascular therapy in patients with basilar apex aneurysm has been settled, part of this phenomenon is related to the significant tendency of vital perforators to be involved in the aneurysm dissection and clipping, which can implicate unfavorable outcomes. Nevertheless, microsurgical treatment remains the treatment that can provide the superior rates of stable and durable aneurysm occlusion, which is most important to young patients.In this video, we present the case of a 45-yr-old female patient who complained of a sudden and severe headache and presented with progressive lethargy during the following 3 d...
July 30, 2018: Operative Neurosurgery (Hagerstown, Md.)
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