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Image-guided surgery

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https://www.readbyqxmd.com/read/28730260/longer-survival-of-a-patient-with-glioblastoma-resected-with-5-aminolevulinic-acid-5-ala-guided-surgery-and-foreign-body-reaction-to-polyglycolic-acid-pga-suture
#1
Raluca Maria Munteanu, Lucian Eva, Bogdan IonuŢ DobrovăŢ, Alin Constantin Iordache, Liviu Pendefunda, Nicoleta Dumitrescu, Doina Mihăilă, Cristina Maria Gavrilescu, Elena Şapte, Ion Poeată
In recent years, there is a growing evidence that using 5-aminolevulinic acid (5-ALA)-guided resection of a cerebral glioblastoma, associated with chemoradiotherapy determine a prolonged survival of these patients, even though this period do not exceed 15 months. 5-ALA is a natural biochemical precursor of heme that is metabolized to fluorescent porphyrins, particularly protoporphyrin IX (PPIX) and no foreign reaction were noted until now. However, foreign body reaction developing in neurosurgery is documented in a few number of cases to suture material, surgical hemostatic material, or surgical glove starch, but up to now we could not find any article about granulomatous inflammation to polyglycolic acid (PGA) suture after brain tumor resection...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28729372/intraoperative-optical-coherence-tomography-compatible-surgical-instruments-for-real-time-image-guided-ophthalmic-surgery
#2
Justis P Ehlers, Atsuro Uchida, Sunil K Srivastava
Intraoperative optical coherence tomography (OCT) is a potentially transformational technology that is now commercially available to ophthalmic surgeons. Currently, the use of the technology is primarily limited to a 'stop and image' approach due to the lack of OCT compatibility with surgical instrumentation. In this report, we describe multiple OCT-compatible surgical instruments that were developed for various surgical needs, based on previous evaluation of potential surgical materials for optical features and physical properties...
July 20, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728206/-subaxial-cervical-spine-injuries-treatment-recommendations-of-the-german-orthopedic-and-trauma-society
#3
Philipp Schleicher, Matti Scholz, Frank Kandziora, Andreas Badke, Florian Hans Brakopp, Helmut Klaus Friedrich Ekkerlein, Erol Gercek, Rene Hartensuer, Philipp Hartung, Jan-Sven Gilbert Jarvers, Philipp Kobbe, Stefan Matschke, Robert Morrison, Christian W Müller, Miguel Pishnamaz, Maximilian Reinhold, Klaus John Schnake, Gregor Schmeiser, Gregor Stein, Bernhard Ullrich, Thomas Weiß, Volker Zimmermann
In a consensus process during four sessions in 2016, the working group "lower cervical spine" of the German Society for Orthopedic and Trauma Surgery (DGOU), formulated "Therapeutic Recommendations for the Lower Cervical Spine", taking into consideration the current literature. Therapeutic goals are a permanently stable, painless cervical spine and the protection against secondary neurologic damage while retaining the greatest possible amount of motion and spinal profile. Due to its ease of use and its proven good reliability, the AOSpine classification for subaxial cervical injuries should be used...
July 20, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28722024/multifunctional-nanoparticles-as-a-tissue-adhesive-and-an-injectable-marker-for-image-guided-procedures
#4
Kwangsoo Shin, Jin Woo Choi, Giho Ko, Seungmin Baik, Dokyoon Kim, Ok Kyu Park, Kyoungbun Lee, Hye Rim Cho, Sang Ihn Han, Soo Hong Lee, Dong Jun Lee, Nohyun Lee, Hyo-Cheol Kim, Taeghwan Hyeon
Tissue adhesives have emerged as an alternative to sutures and staples for wound closure and reconnection of injured tissues after surgery or trauma. Owing to their convenience and effectiveness, these adhesives have received growing attention particularly in minimally invasive procedures. For safe and accurate applications, tissue adhesives should be detectable via clinical imaging modalities and be highly biocompatible for intracorporeal procedures. However, few adhesives meet all these requirements. Herein, we show that biocompatible tantalum oxide/silica core/shell nanoparticles (TSNs) exhibit not only high contrast effects for real-time imaging but also strong adhesive properties...
July 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28721307/multispectral-fluorescence-guided-surgery-a-feasibility-study-in-a-phantom-using-a-clinical-grade-laparoscopic-camera-system
#5
Danny M van Willigen, Nynke S van den Berg, Tessa Buckle, Gijs H KleinJan, James C Hardwick, Henk G van der Poel, Fijs Wb van Leeuwen
Although the possibilities in image guided surgery are advancing rapidly, complex surgical procedures such as nerve sparing prostatectomy still lack precision regarding differentiation between diseased and delicate anatomical structures. Here, the use of complementary fluorescent tracers in combination with a dedicated multispectral fluorescence camera system could support differentiation between healthy and diseased tissue. In this study, we provide proof of concept data indicating how a modified clinical-grade fluorescence laparoscope can be used to sensitively detect white light and three fluorescent dyes (fluorescein, Cy5, and ICG) in a sequential fashion...
2017: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28721303/value-of-99m-tc-mdp-spect-ct-and-18-f-fdg-pet-ct-scanning-in-the-evaluation-of-malignantly-transformed-fibrous-dysplasia
#6
Wei-Jun Wei, Zhen-Kui Sun, Chen-Tian Shen, Xin-Yun Zhang, Juan Tang, Hong-Jun Song, Zhong-Ling Qiu, Quan-Yong Luo
Although fibrous dysplasia is not considered a potentially premalignant disorder, malignant transformation occurs. Because of its rarity, radiographic features of malignantly transformed fibrous dysplasia on cross-sectional imaging modalities are less recognized, making diagnosis and differential diagnosis of the disease quite difficult in clinical practice. In this study, we analyzed the clinical characteristics, imaging features, pathology findings and surgery strategies of 19 malignantly transformed fibrous dysplasia...
2017: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28718983/multimodality-image-guided-cryoablation-for-inoperable-tumor-induced-osteomalacia
#7
Sri Harsha Tella, Hayet Amalou, Bradford J Wood, Richard Chang, Clara C Chen, Cemre Robinson, Michelle Millwood, Guthrie Lori, Sheng Xu, Elliot Levy, Venkatesh Krishnasamy, Rachel I Gafni, Michael T Collins
Tumor-induced osteomalacia (TIO) is a debilitating paraneoplastic condition caused by small phosphaturic mesenchymal tumors (PMTs) that secrete large amounts of the phosphate- and vitamin D-regulating hormone, FGF23. Tumor removal results in cure. However, due to high perioperative comorbidity, either from tumor location or host factors, surgery is sometimes not an option. Tumor destruction via cryoablation may be an effective option for inoperable PMTs. Three subjects with a confirmed diagnosis of TIO were studied...
July 18, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28718944/the-effect-of-routine-radiological-reporting-of-thyroid-incidentalomas-on-rates-of-thyroid-needle-biopsy-thyroid-surgery-and-detection-of-thyroid-malignancy
#8
J D Sinnott, R Mortimer, J Smith, E Skelton, K Drinkwater, D Lipscomb, D C Howlett
OBJECTIVE: This study looked at the effect of a changing radiology reporting policy to routinely review the thyroid gland where visible and report on any thyroid lesion, recommending further investigation as appropriate. CONTEXT: Incidentaloma is a term used to describe a lesion found on imaging unrelated to the clinical issue under investigation. There is variability in the radiological reporting of thyroid incidentalomas and conflicting recommendations as to how these lesions should be managed...
July 18, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28717564/electrically-tunable-fluidic-lens-imaging-system-for-laparoscopic-fluorescence-guided-surgery
#9
Davide Volpi, Iain D C Tullis, Paul R Barber, Edyta M Augustyniak, Sean C Smart, Katherine A Vallis, Borivoj Vojnovic
The addition of fluorescence guidance in laparoscopic procedures has gained significant interest in recent years, particularly through the use of near infrared (NIR) markers. In this work we present a novel laparoscope camera coupler based on an electrically tunable fluidic lens that permits programmable focus control and has desirable achromatic performance from the visible to the NIR. Its use extends the lower working distance limit and improves detection sensitivity, important for work with molecularly targeted fluorescence markers...
July 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28710046/image-guidance-to-aid-pedicle-screw-fixation-of-a-lumbar-fracture-dislocation-injury-in-a-toddler
#10
John K Houten, Jonathan Nahkla, Shashank Ghandi
BACKGROUND: Pedicle screw fixation of the lumbar spine in children less than two years of age is particularly challenging, as successful cannulation of the small pedicle dimensions require a high level of precision and there are no implants specifically designed for the infantile spine. Image-guided navigation is commonly used in adult spinal surgery and may be particularly helpful for placement of spinal screws where the bony anatomy is small and/or anatomically complex as in the upper cervical area...
July 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28709790/corrective-osteotomy-for-malunited-diaphyseal-forearm-fractures-using-preoperative-3-dimensional-planning-and-patient-specific-surgical-guides-and-implants
#11
Ann-Maria Byrne, Bianca Impelmans, Veronique Bertrand, Annemieke Van Haver, Frederik Verstreken
PURPOSE: Three-dimensional planning based on computed tomography images of the malunited and the mirrored contralateral forearm allows preoperative simulations of corrective osteotomies, the fabrication of patient-specific osteotomy guides, and custom-made 3-dimensional printed titanium plates. This study aims to assess the precision and clinical outcome of this technique. METHODS: This was a prospective pilot study with 5 consecutive patients. The mean age at initial injury was 11 years (range, 4-16 years), and the mean interval from the time of injury to the time of corrective surgery was 32 months (range, 7-107 months)...
July 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28709744/the-matching-method-for-veins-images
#12
Paweł Popielski, Robert Koprowski, Zygmunt Wróbel
BACKGROUND: A common problem in medical practice is the localization of subcutaneous veins and arteries. Automatization of this procedure may help to develop bloodbot rigs and improve use of image guided surgery. METHOD: It is not necessary to have a full 3D model in order to determine their location by calculating the spatial coordinates of veins axes in the adopted coordinate system. A much better solution is pre-segmentation, which provides veins axes, and further search for stereo correspondence in the segmented images...
July 3, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28707652/thermal-ablation-in-the-management-of-adrenal-metastasis-originating-from-non-small-cell-lung-cancer-a-5-year-single-center-experience
#13
Evanthia I Botsa, Ioanna L Thanou, Aspasia T Papatheodoropoulou, Loukas I Thanos
BACKGROUND: Treatment of adrenal metastasis from lung carcinoma may prolong survival in the selected patients. However, not all patients can undergo surgery; thus, minimally invasive ablation procedures such as radiofrequency ablation (RFA) and microwave ablation (MWA) have gained acceptance as alternative treatment methods. This study summarized a 5-year single-center experience regarding the evaluation of safety and efficacy of computed tomography (CT)-guided thermal ablation in the management of adrenal metastasis originating from non-small cell lung cancer (NSCLC)...
July 13, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28707211/high-accuracy-drilling-with-an-image-guided-light-weight-robot-autonomous-versus-intuitive-feed-control
#14
Sebastian Tauscher, Alexander Fuchs, Fabian Baier, Lüder A Kahrs, Tobias Ortmaier
PURPOSE: Assistance of robotic systems in the operating room promises higher accuracy and, hence, demanding surgical interventions become realisable (e.g. the direct cochlear access). Additionally, an intuitive user interface is crucial for the use of robots in surgery. Torque sensors in the joints can be employed for intuitive interaction concepts. Regarding the accuracy, they lead to a lower structural stiffness and, thus, to an additional error source. The aim of this contribution is to examine, if an accuracy needed for demanding interventions can be achieved by such a system or not...
July 13, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28707115/preoperative-magnetic-resonance-imaging-predicts-eligibility-for-arthroscopic-primary-anterior-cruciate-ligament-repair
#15
Jelle P van der List, Gregory S DiFelice
PURPOSE: To assess the role of preoperative magnetic resonance imaging (MRI) on the eligibility for arthroscopic primary anterior cruciate ligament (ACL) repair. METHODS: All patients undergoing ACL surgery between 2008 and 2017 were included. Patients underwent arthroscopic primary repair if sufficient tissue length and quality were present, or they underwent single-bundle ACL reconstruction. Preoperative MRI tear locations were graded with the modified Sherman classification: type I (>90% distal remnant length), type II (75-90%), or type III (25-75%)...
July 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28705490/deformation-correction-for-image-guided-liver-surgery-an%C3%A2-intraoperative-assessment-of%C3%A2-fidelity
#16
Logan W Clements, Jarrod A Collins, Jared A Weis, Amber L Simpson, T Peter Kingham, William R Jarnagin, Michael I Miga
BACKGROUND: Although systems of 3-dimensional image-guided surgery are a valuable adjunct across numerous procedures, differences in organ shape between that reflected in the preoperative image data and the intraoperative state can compromise the fidelity of such guidance based on the image. In this work, we assessed in real time a novel, 3-dimensional image-guided operation platform that incorporates soft tissue deformation. METHODS: A series of 125 alignment evaluations were performed across 20 patients...
July 10, 2017: Surgery
https://www.readbyqxmd.com/read/28704697/the-use-of-ultrasound-in-the-clinical-re-staging-of-the-axilla-after-neoadjuvant-chemotherapy-nact
#17
Anastasia Peppe, Robin Wilson, Romney Pope, Kate Downey, Jennifer Rusby
INTRODUCTION: Ultrasound (US) is the imaging modality of choice for staging the axilla prior to surgery in patients with breast cancer (BC). High pathological complete response rates in the axilla after NACT mean a more conservative approach to surgery can be considered. Radiological re-staging is important in this decision making. After the presentation of results from ACOSOG Z1071 in December 2012, formal ultrasound re-assessment of the axilla after primary therapy was specifically requested in our institution...
July 10, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28700488/correlation-of-iodine-uptake-and-perfusion-parameters-between-dual-energy-ct-imaging-and-first-pass-dual-input-perfusion-ct-in-lung-cancer
#18
Xiaoliang Chen, Yanyan Xu, Jianghui Duan, Chuandong Li, Hongliang Sun, Wu Wang
To investigate the potential relationship between perfusion parameters from first-pass dual-input perfusion computed tomography (DI-PCT) and iodine uptake levels estimated from dual-energy CT (DE-CT).The pre-experimental part of this study included a dynamic DE-CT protocol in 15 patients to evaluate peak arterial enhancement of lung cancer based on time-attenuation curves, and the scan time of DE-CT was determined. In the prospective part of the study, 28 lung cancer patients underwent whole-volume perfusion CT and single-source DE-CT using 320-row CT...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28700182/-brachial-artery-pseudoaneurysm-a-rare-but-serious-complication-in-hemodialysis-patients-with-arteriovenous-fistula
#19
Andrea Mancini, Giuseppe Castriotta, Pernina Angelini, Michele Bozzi, Vincenzo Giancaspro, Elvira La Raia, Maria Teresa Nisi, Anna Rita Proscia, Giuseppe Tarantino, Ottavia Vitale, Cristoforo Cuzzola
A pseudoaneurysm or false aneurysm of the brachial artery is an uncommon occurrence in patients receiving hemodialysis with arteriovenous fistula (AVF). We describe the case of a 76-year-old woman presenting with a large, tender, pulsatile mass in the right antecubital region 10 cm from the AVF. B-mode ultrasound examination revealed a saccular hematoma. Color doppler showed a recirculation movement of blood, creating a two colors image called "Korean flag". The patient was transferred to the surgical unit where she first underwent ultrasound-guided compression and then surgical repair of the pseudoaneurysm...
June 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28697002/re-irradiation-of-cervical-and-endometrial-cancer
#20
Megan Llewelyn, Alexandra Taylor
PURPOSE OF REVIEW: Re-irradiation historically has been associated with unacceptable toxicity and limited benefit. Recent advances in radiotherapy can change the treatment paradigm to provide new salvage treatments for recurrences of cervical and endometrial cancer. RECENT FINDINGS: Image-guided brachytherapy is an effective method for salvaging central pelvic recurrence, although it has resulted in 20-25% severe late toxicity. Pelvic sidewall disease is not accessible to brachytherapy, so a combined modality approach with radical surgery and intraoperative radiotherapy is an alternative approach...
July 10, 2017: Current Opinion in Oncology
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