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Image-guided surgery

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https://www.readbyqxmd.com/read/28079677/cadaveric-testing-of-robot-assisted-access-to-the-internal-auditory-canal-for-vestibular-schwannoma-removal
#1
Neal P Dillon, Ramya Balachandran, Michael A Siebold, Robert J Webster, George B Wanna, Robert F Labadie
HYPOTHESIS: An image-guided robotic system can safely perform the bulk removal of bone during the translabyrinthine approach to vestibular schwannoma (VS). BACKGROUND: The translabyrinthine approach to VS removal involves extensive manual milling in the temporal bone to gain access to the internal auditory canal (IAC) for tumor resection. This bone removal is time consuming and challenging due to the presence of vital anatomy (e.g., facial nerve) embedded within the temporal bone...
January 10, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28074785/deformable-registration-of-ct-and-cone-beam-ct-with-local-intensity-matching
#2
Seyoun Park, William Plishker, Harry Quon, John Wong, Raj Shekhar, Junghoon Lee
Cone-beam CT (CBCT) is a widely used intra-operative imaging modality in image-guided radiotherapy and surgery. A short scan followed by a filtered-backprojection is typically used for CBCT reconstruction. While data on the mid-plane (plane of source-detector rotation) is complete, off-mid-planes undergo different information deficiency and the computed reconstructions are approximate. This causes different reconstruction artifacts at off-mid-planes depending on slice locations, and therefore impedes accurate registration between CT and CBCT...
January 11, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28072730/bortezomib-combined-with-lenalidomide-as-the-first-line-treatment-for-the-rare-synchronous-occurrence-of-multiple-myeloma-and-pulmonary-adenocarcinoma-a-case-report
#3
Wenli Zuo, Xinghu Zhu, Jingke Yang, Zhenyang Mei, Mei Deng, Quande Lin, Yongping Song, Qingsong Yin
BACKGROUND: Simultaneous multiple myeloma (MM) and pulmonary adenocarcinoma is a rare occurrence, and thus, treatment is a challenge. This study reports on 1 such case of MM with concurrent lung cancer, where an accurate diagnosis was made and the patient underwent treatment for both cancers. CASE SUMMARY: A 68-year-old man presented with 2 months of progressive lower back pain. Visualization with magnetic resonance imaging (MRI) revealed multiple collapsed vertebrae from T12 to S3, as well as an altered signal intensity at the T3 vertebra...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28072563/inefficiencies-in-computed-tomography-sinus-imaging-for-management-of-sinonasal-disease
#4
Giriraj K Sharma, Allen Foulad, David Shamouelian, Naveen D Bhandarkar
Objective A subset of patients with sinonasal disease who obtain a diagnostic computed tomography (CT) sinus scan may require repeat preoperative CT due to the inadequacy of diagnostic CT for image-guided sinus surgery (IGSS). This leads to increased CT utilization, health care costs, and patient exposure to ionizing radiation. The objective of this study is to determine the frequencies of diagnostic CT sinus studies that were inadequate for IGSS and repeat CT studies for purposes of IGSS. Study Design A retrospective chart study was performed between May 2012 and August 2013...
January 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28068277/initial-experience-with-o-arm-navigated-spinal-surgery-report-on-two-cases
#5
Ivo I Kehayov, Christo B Zhelyazkov, Borislav M Kalnev, Atanas N Davarski, Borislav D Kitov, Stefan D Raykov
Image-guided spinal surgery is becoming increasingly popular because it allows surgeons to achieve minimal invasiveness and maximum precision in the performed procedures. We present our initial experience with two cases operated on using O-arm-based spinal navigation at the Clinic of Neurosurgery in St George University Hospital, Plovdiv, Bulgaria. In the first case, we performed removal of extradural spinal tumor of the sixth thoracic vertebra and O-arm-navigated pedicle screw fixation. In the second case, we performed O-arm-navigated corpectomy of the fifth cervical vertebra and anterior spinal reconstruction and fusion with titanium expandable mesh and cervical plate in connection with degenerative narrowing of the cervical spinal canal that lead to clinically manifested myelopathy...
December 1, 2016: Folia Medica
https://www.readbyqxmd.com/read/28066679/image-guided-techniques-for-localizing-pulmonary-nodules-in-thoracoscopic-surgery
#6
REVIEW
Mong-Wei Lin, Jin-Shing Chen
Low-dose computed tomography (LDCT) screening has increased the detection rate for small pulmonary nodules with ground-glass opacity (GGO) in the peripheral lung parenchyma. Minimally invasive thoracoscopic surgery for these lung nodules is challenging for thoracic surgeons, and image-guided preoperative localization is mandatory for their successful resection. Image-guided localization methods primarily include two imaging tools: computed tomography (CT) and bronchoscopy. These different methods may use different localized materials, including hookwires, dyes, microcoils, fiducial markers, contrast media, and radiotracers...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28066677/applications-of-indocyanine-green-based-near-infrared-fluorescence-imaging-in-thoracic-surgery
#7
REVIEW
Jian Zhou, Fan Yang, Guanchao Jiang, Jun Wang
Near-infrared (NIR) fluorescence guided surgery is an emerging technique. This technique uses the combination of dyes and NIR imaging devices to expand the visible spectrum. Thus it can provide more anatomic and functional information, and may facilitate a more complete resection of cancer, or better protection of important normal structures. Recently, significant progress has been made in the field of NIR fluorescence guided thoracic surgery. This may lead to better prognosis and health-economic outcomes. In this article, the current studies of indocyanine green (ICG) based NIR fluorescence guided thoracic surgeries are reviewed...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28066676/image-guided-localization-of-small-lung-nodules-in-video-assisted-thoracic-surgery
#8
REVIEW
Ze-Rui Zhao, Rainbow W H Lau, Peter S Y Yu, Randolph H L Wong, Calvin S H Ng
The advancement of imaging technology has recently facilitated single port minimally-invasive thoracic surgery techniques. Cone-beam computed tomography (CBCT) shows promising results in visualizing the target lesion and its surrounding critical anatomy, with an error of less than 2 mm. The integration of CBCT with the operating room (OR) to form the hybrid OR, provides unparalleled real-time imaging of the patient, which can be used with electromagnetic navigation bronchoscopy to confirm successful navigation and increase procedural accuracy particularly for small peripheral pulmonary targets...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28066670/image-guided-thoracoscopic-surgery-with-dye-localization-in-a-hybrid-operating-room
#9
Shun-Mao Yang, Wei-Chun Ko, Mong-Wei Lin, Hsao-Hsun Hsu, Chih-Yang Chan, I-Hui Wu, Yeun-Chung Chang, Jin-Shing Chen
BACKGROUND: The rate of detection of small pulmonary nodules (SPNs) has increased. Thoracoscopic resection following image-guided localization had been a reliable alternative in their treatment. We present our experience with image-guided dye localization using robotic C-arm computed tomography (CT) followed by immediate video-assisted thoracoscopic surgery (VATS) for SPNs in a hybrid operating room (OR). METHODS: From July 2015 to July 2016, 25 consecutive patients with SPNs smaller than 2 cm underwent robotic C-arm CT-guided blue dye tattooing followed by immediate VATS in a hybrid OR...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28065817/reproducibility-of-sagittal-radiographic-parameters-in-adolescent-idiopathic-scoliosis-a-guide-to-reference-values-using-serial-imaging
#10
Hwee Weng Dennis Hey, Gordon Chengyuan Wong, Chloe Chan Xiaoyun, Leok-Lim Lau, Naresh Kumar, Joseph Shantakumar Thambiah, John Nathaniel Ruiz, Ka-Po Gabriel Liu, Hee-Kit Wong
BACKGROUND CONTEXT: Knowledge of sagittal radiographical parameters in AIS patients has not yet caught up with our understanding of their roles in patients with adult spinal deformity. It is likely that more emphasis will be placed in restoring sagittal parameters for AIS patients in the future. Therefore we need to understand how these parameters may vary in AIS to facilitate management plans. PURPOSE: To determine the reproducibility of sagittal spinal parameters on lateral film radiographs in patients with AIS...
January 5, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28064227/pet-probe-guided-surgery-in-patients-with-breast-cancer-proposal-for-a-methodological-approach
#11
Paolo Orsaria, Agostino Chiaravalloti, Alessandro Fiorentini, Chiara Pistolese, Gianluca Vanni, Alessandra Vittoria Granai, Dimitrios Varvaras, Roberta Danieli, Orazio Schillaci, Giuseppe Petrella, Oreste Claudio Buonomo
BACKGROUND: Although it is valuable for detecting distant metastases, identifying recurrence, and evaluating responses to chemotherapy, the role of (18)F-fluorodeoxyglucose positron-emission tomography/computed tomography ((18)F-FDG PET/CT) in assessing locoregional nodal status for initial staging of breast cancer has not yet been well-defined in clinical practice. In the current report, we describe a new PET probe-based clinical approach, with evaluation of the technical performance of a handheld high-energy gamma probe for intraoperative localization of breast carcinomas, and evaluation of lymph node metastases during radio-guided oncological surgery...
January 2017: In Vivo
https://www.readbyqxmd.com/read/28063909/periprocedural-outcomes-comparing-fibroid-embolization-and-focused-ultrasound-a-randomized-controlled-trial-and-comprehensive-cohort-analysis
#12
Emily P Barnard, Ahmed M AbdElmagied, Lisa E Vaughan, Amy L Weaver, Shannon K Laughlin-Tommaso, Gina K Hesley, David A Woodrum, Vanessa L Jacoby, Maureen P Kohi, Thomas M Price, Angel Nieves, Michael J Miller, Bijan J Borah, Krzysztof R Gorny, Phyllis C Leppert, Lisa G Peterson, Elizabeth A Stewart
BACKGROUND: Uterine fibroids are a common problem for reproductive-aged women, yet little comparative effectiveness research is available to guide treatment choice. Uterine artery embolization and magnetic resonance imaging-guided focused ultrasound surgery are minimally invasive therapies approved by the United States Food and Drug Administration for treating symptomatic uterine fibroids. The Fibroid Interventions: Reducing Symptoms Today and Tomorrow study is the first randomized controlled trial to compare these 2 fibroid treatments...
January 4, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28062897/the-results-of-ultrasonography-guided-percutaneous-radiofrequency-ablation-in-hyperparathyroid-patients-in-whom-surgery-is-not-feasible
#13
Ismail Cem Sormaz, Arzu Poyanlı, Sami Açar, Ahmet Yalın İşcan, İlker Ozgur, Fatih Tunca, Yasemin Giles Senyürek
BACKGROUND: The aim of the study was to evaluate the results of ultrasonography (US)-guided percutaneous radiofrequency ablation (RFA) in hyperparathyroid patients who refused surgery or had high surgical risks. PATIENTS AND METHODS: Five patients with hyperparathyroidism (HPT) underwent US-guided RFA for a single hyperfunctioning parathyroid lesion. Post-ablation serum calcium and parathormone (PTH) assays were performed. All patients underwent imaging studies 6 months after the ablation to visualize the post-ablation change in the size of the treated parathyroid lesions...
January 6, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28058018/factors-associated-with-surgery-in-patients-with-intra-abdominal-fistulizing-crohn-s-disease
#14
Shaul Yaari, Ariel Benson, Eyal Aviran, Naama Lev Cohain, Ran Oren, Jacob Sosna, Eran Israeli
AIM: To characterize radiological and clinical factors associated with subsequent surgical intervention in Crohn's disease (CD) patients with intra-abdominal fistulae. METHODS: From a cohort of 1244 CD patients seen over an eight year period (2006 to 2014), 126 patients were identified as having intra-abdominal fistulae, and included in the study. Baseline patient information was collected from the medical records. Imaging studies were assessed for: anatomic type and number of fistulae; diameter of the inflammatory conglomerate; length of diseased bowel; presence of a stricture with pre-stenotic dilatation; presence of an abscess; lymphadenopathy; and the degree of bowel enhancement...
December 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28050574/a-validation-study-of-a-novel-3-dimensional-mri-modeling-technique-to-identify-the-anatomic-insertions-of-the-anterior-cruciate-ligament
#15
Catherine Hui, Yeli Pi, Vimarsha Swami, Myles Mabee, Jacob L Jaremko
BACKGROUND: Anatomic single bundle anterior cruciate ligament (ACL) reconstruction is the current gold standard in ACL reconstructive surgery. However, placement of femoral and tibial tunnels at the anatomic center of the ACL insertion sites can be difficult intraoperatively. We developed a "virtual arthroscopy" program that allows users to identify ACL insertions on preoperative knee magnetic resonance images (MRIs) and generates a 3-dimensional (3D) bone model that matches the arthroscopic view to help guide intraoperative tunnel placement...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28049608/electromagnetic-navigated-positioning-of-the-maxilla-after-le-fort-i-osteotomy-in-preclinical-orthognathic-surgery-cases
#16
Moritz Berger, Igor Nova, Sebastian Kallus, Oliver Ristow, Urs Eisenmann, Christian Freudlsperger, Robin Seeberger, Jürgen Hoffmann, Hartmut Dickhaus
OBJECTIVES: Inaccuracies in orthognathic surgery can be caused during face-bow registration, model surgery on plaster models, and intermaxillary splint manufacturing. Electromagnetic (EM) navigation is a promising method for splintless digitized maxillary positioning. STUDY DESIGN: After performing Le Fort I osteotomy on 10 plastic skulls, the target position of the maxilla was guided by an EM navigation system. Specially implemented software illustrated the target position by real-time multistage colored three-dimensional imaging...
October 14, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28048837/mo-de-202-01-image-guided-focused-ultrasound-surgery-and-therapy
#17
K Farahani
At least three major trends in surgical intervention have emerged over the last decade: a move toward more minimally invasive (or non-invasive) approach to the surgical target; the development of high-precision treatment delivery techniques; and the increasing role of multi-modality intraoperative imaging in support of such procedures. This symposium includes invited presentations on recent advances in each of these areas and the emerging role for medical physics research in the development and translation of high-precision interventional techniques...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048300/th-cd-206-10-clinical-application-of-the-mind-demons-algorithm-for-symmetric-diffeomorphic-deformable-mr-to-ct-image-registration-in-spinal-interventions
#18
S Reaungamornrat, T De Silva, A Uneri, J Wolinsky, A Khanna, G Kleinszig, S Vogt, J Prince, J Siewerdsen
PURPOSE: Accurate intraoperative localization of target anatomy (e.g., tumors and vertebral levels) and critical structures (e.g., nerves and vessels) is essential to safe, effective surgery. Preoperative CT/MR images can be used to identify such vital anatomy in intraoperative images through multimodality deformable registration. We proposed a deformable registration method to align preoperative MR to intraoperative CT using modality-independent neighborhood descriptors (MIND) and a Huber metric for robust registration...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048186/mo-de-202-02-advances-in-image-registration-and-reconstruction-for-image-guided-neurosurgery
#19
J Siewerdsen
At least three major trends in surgical intervention have emerged over the last decade: a move toward more minimally invasive (or non-invasive) approach to the surgical target; the development of high-precision treatment delivery techniques; and the increasing role of multi-modality intraoperative imaging in support of such procedures. This symposium includes invited presentations on recent advances in each of these areas and the emerging role for medical physics research in the development and translation of high-precision interventional techniques...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047736/su-f-p-42-to-navigate-or-not-to-navigate-hdr-bt-in-recurrent-spine-lesions
#20
L Voros, G Cohen, M Zaider, Y Yamada
PURPOSE: We compare the accuracy of HDR catheter placement for paraspinal lesions using O-arm CBCT imaging combined with StealthStation navigation and traditional fluoroscopically guided catheter placement. METHODS: CT and MRI scans were acquired pre-treatment to outline the lesions and design treatment plans (pre-plans) to meet dosimetric constrains. The pre-planned catheter trajectories were transferred into the StealthStation Navigation system prior to the surgery...
June 2016: Medical Physics
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