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Image-guided surgery

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https://www.readbyqxmd.com/read/28213790/optical-see-through-cancer-vision-goggles-enable-direct-patient-visualization-and-real-time-fluorescence-guided-oncologic-surgery
#1
Suman B Mondal, Shengkui Gao, Nan Zhu, LeMoyne Habimana-Griffin, Walter J Akers, Rongguang Liang, Viktor Gruev, Julie Margenthaler, Samuel Achilefu
BACKGROUND: The inability to visualize the patient and surgical site directly, limits the use of current near infrared fluorescence-guided surgery systems for real-time sentinel lymph node biopsy and tumor margin assessment. METHODS: We evaluated an optical see-through goggle augmented imaging and navigation system (GAINS) for near-infrared, fluorescence-guided surgery. Tumor-bearing mice injected with a near infrared cancer-targeting agent underwent fluorescence-guided, tumor resection...
February 17, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28212976/functional-lumen-imaging-probe-for-the-management-of-esophageal-disorders-expert-review-from-the-clinical-practice-updates-committee-of-the-aga-institute
#2
REVIEW
Ikuo Hirano, John E Pandolfino, Guy E Boeckxstaens
The functional luminal imaging probe is a Food and Drug Administration-approved measurement tool used to measure simultaneous pressure and diameter to guide management of various upper gastrointestinal disorders. Additionally, this tool is also approved to guide therapy during bariatric procedures and specialized esophageal surgery. Although it has been commercially available since 2009 as the endolumenal functional lumen imaging probe (EndoFLIP), the functional luminal imaging probe has had limited penetrance into clinical settings outside of specialized centers...
March 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28212080/improving-registration-robustness-for-image-guided-liver-surgery-in-a-novel-human-to-phantom-data-framework
#3
Jarrod Collins, Jared Weis, Jon Heiselman, Logan Clements, Amber Simpson, Willam Jarnagin, Michael Miga
In open image-guided liver surgery (IGLS), a sparse representation of the intraoperative organ surface can be acquired to drive image-to-physical registration. We hypothesize that uncharacterized error induced by variation in the collection patterns of organ surface data limits the accuracy and robustness of IGLS registration. Clinical validation of such registration methods is challenged due to the difficulty in obtaining data representative of the true state of organ deformation. We propose a novel human-to-phantom validation framework that transforms surface collection patterns from in vivo IGLS procedures (n=13) onto a well-characterized hepatic deformation phantom for the purpose of validating surface-driven, volumetric nonrigid registration methods...
February 13, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28209110/bilateral-inguinal-hernia-with-an-uncommon-content%C3%A2-a-case-report
#4
L Soydan, H Gündoğdu, A Aslan, I Inan, A O Balık
Here we present a sixty-two year old man with bilateral swellings palpated in inguinal areas on physical examination. Ultrasonography and abdominal multi-detector computed tomography revealed a bladder herniation through the right inguinal canal and a sigmoid colon herniation through the left inguinal canal. Radiologic imaging methods are important and can guide clinicians for preemptive or emergent surgery. (Acta gastroenterol. belg., 2016, 79, 495-496).
September 2016: Acta Gastro-enterologica Belgica
https://www.readbyqxmd.com/read/28208932/spontaneous-rupture-of-the-main-pancreatic-duct-synchronous-with-a-multi-focal-microscopic-pancreatic-adenocarcinoma-a-case-report
#5
Shirly Shohat, Katerina Shulman, Boris Kessel, Oren Gal, Abdel Rauf Zeina
Pancreatic cancer is one of the most lethal types of malignant tumours, commonly diagnosed at an advanced stage. The only curative treatment for this fatal disease is surgery and early diagnosis is the key to a better outcome and prognosis. In this case report we present a 57-year-old woman presenting to the emergency room with abdominal pain and weight loss. Computer Tomography (CT) imaging showed a rupture of the main pancreatic duct and a peri-pancreatic fluid collection with no evidence of a pancreatic mass...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28205308/fast-and-robust-multimodal-image-registration-using-a-local-derivative-pattern
#6
Dongsheng Jiang, Yonghong Shi, Xinrong Chen, Manning Wang, Zhijian Song
PURPOSE: Deformable multimodal image registration, which can benefit radiotherapy and image guided surgery by providing complementary information, remains a challenging task in the medical image analysis field due to the difficulty of defining a proper similarity measure. This article presents a novel, robust and fast binary descriptor, the discriminative local derivative pattern (dLDP), which is able to encode images of different modalities into similar image representations. METHODS: dLDP calculates a binary string for each voxel according to the pattern of intensity derivatives in its neighborhood...
February 2017: Medical Physics
https://www.readbyqxmd.com/read/28203022/-clinical-evaluation-of-in-plane-ultrasound-guided-thoracic-paravertebral-block-using-laterally-intercostal-approach
#7
T Xu, M Li, Y Tian, J T Song, C Ni, X Y Guo
OBJECTIVE: To evaluate the feasibility and success rate of in-plane ultrasound-guided paravertebral block using laterally intercostal approach. METHODS: In the study, 27 patients undergoing elective thoracic surgery were selected to do paravertebral block preoperatively. The fifth intercostal space was scanned by ultrasound probe which was placed along the long axis of the rib and 8 cm lateral to the midline of the spine. The needle was advanced in increments aiming at the space between the internal and innermost intercostal muscles...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28203007/-diagnossis-and-treatment-of-complicated-anterior-teeth-esthetic-defects-by-combination-of-whole-process-digital-esthetic-rehabilitation-with-periodontic-surgery
#8
Z Li, Y S Liu, H Q Ye, Y S Liu, W J Hu, Y S Zhou
OBJECTIVE: To explore a new method of whole-process digital esthetic prosthodontic rehabilitation combined with periodontic surgery for complicated anterior teeth esthetic defects accompanied by soft tissue morphology, to provide an alternative choice for solving this problem under the guidance of three-dimensional (3D) printing digital dental model and surgical guide, thus completing periodontic surgery and digital esthetic rehabilitation of anterior teeth. METHODS: In this study, 12 patients with complicated esthetic problems accompanied by soft tissue morphology in their anterior teeth were included...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28199993/intraoperative-thresholds-for-capsular-stimulation-are-reliable-for-chronic-pallidal-deep-brain-stimulation-in-dystonia
#9
René Reese, Martin M Reich, Daniela Falk, Günther Deuschl, H Maximilian Mehdorn, Jens Volkmann
BACKGROUND: The threshold current for inducing muscle contractions by stimulation of pyramidal tract fibres adjacent to the globus pallidus internus (GPi) is, besides microelectrode recordings for the determination of nuclear boundaries, currently the only neurophysiological marker for intraoperative refinement of the anatomically planned target point for pallidal deep brain stimulation (GPi-DBS) in dystonia. OBJECTIVES: To determine the relationship between intraoperative thresholds for muscle contractions under general anaesthesia and postoperative thresholds in GPi-DBS...
February 16, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28192870/clinical-and-immunohistochemical-performance-of-lyophilized-platelet-rich-fibrin-ly-prf-on-tissue-regeneration
#10
Jianming Zhang, Xingying Qi, Xiaoding Luo, Dan Li, Haorong Wang, Ting Li
BACKGROUND: Platelet-rich fibrin (PRF) has been widely used in oral implantology and other fields, but benefits of the fresh PRF (FPRF (fresh platelet-rich fibrin)) were consequently limited because of its short-term application. Thus, a protocol for the combination of PRF and lyophilization comes up in the present study to address the issue of PRF storage and delayed clinical application, which has little been reported in this field at home and abroad by now. PURPOSE: The aim of the present study was to evaluate the applicability of lyophilized platelet-rich fibrin (Ly-PRF) used as the scaffold material for craniofacial tissue regeneration and to compare its biochemical properties with commonly used fresh PRF...
February 13, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28192280/iterative-reconstruction-of-sipm-light-response-functions-in-a-square-shaped-compact-gamma-camera
#11
Andrey Morozov, Francisco Alves, Joao Marcos, Raimundo Martins, Luis Pereira, Vladimir Solovov, Vitaly Chepel
Compact gamma cameras with a square-shaped monolithic scintillator crystal and an array of silicon photomultipliers (SiPMs) are actively being developed for applications in areas such as small animal imaging, cancer diagnostics and radiotracer guided surgery. Statistical methods of position reconstruction, which are potentially superior to the traditional centroid method, require accurate knowledge of the spatial response of each photomultiplier. Using both Monte Carlo simulations and experimental data obtained with a camera prototype, we show that the spatial response of all photomultipliers (light response functions) can be parameterized with axially symmetric functions obtained iteratively from flood field irradiation data...
February 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28188485/feasibility-of-laser-guided-percutaneous-pedicle-screw-placement-in-the-lumbar-spine-using-a-hybrid-or
#12
P H Richter, F Gebhard, M Salameh, K Schuetze, M Kraus
PURPOSE: Innovations in intraoperative imaging lead to major changes in orthopaedic surgery. In our setting, a 3D flat-panel c-arm (Artis zeego) is mounted on a robotic arm offering an integrated aiming tool (Syngo iGuide). Our aim was to investigate the feasibility of Syngo iGuide for pedicle screw placement in comparison with fluoroscopic screw implantation. METHODS: In 10 lumbar models, 100 screws were implanted. In 5 models, a standard fluoroscopic technique was used...
February 10, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28187889/gift-cloud-a-data-sharing-and-collaboration-platform-for-medical-imaging-research
#13
Tom Doel, Dzhoshkun I Shakir, Rosalind Pratt, Michael Aertsen, James Moggridge, Erwin Bellon, Anna L David, Jan Deprest, Tom Vercauteren, Sébastien Ourselin
OBJECTIVES: Clinical imaging data are essential for developing research software for computer-aided diagnosis, treatment planning and image-guided surgery, yet existing systems are poorly suited for data sharing between healthcare and academia: research systems rarely provide an integrated approach for data exchange with clinicians; hospital systems are focused towards clinical patient care with limited access for external researchers; and safe haven environments are not well suited to algorithm development...
February 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28187806/diagnosis-and-management-of-spinal-cord-emergencies
#14
E P Flanagan, S J Pittock
Most spinal cord injury is seen with trauma. Nontraumatic spinal cord emergencies are discussed in this chapter. These myelopathies are rare but potentially devastating neurologic disorders. In some situations prior comorbidity (e.g., advanced cancer) provides a clue, but in others (e.g., autoimmune myelopathies) it may come with little warning. Neurologic examination helps distinguish spinal cord emergencies from peripheral nervous system emergencies (e.g., Guillain-Barré), although some features overlap...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28185905/a-preliminary-study-of-single-operator-cholangioscopy-for-diagnosing-pancreatic-cystic-lesions
#15
Chai Ning-Li, Feng Jia, Guo Yu-Hang, Li Hui-Kai, Ning Bo Wang, Xiangdong Wang, Wang Ying, Wang Yong-Hua, Zhai Ya-Qi, Linghu En-Qiang
BACKGROUND AND AIMS: Advances in imaging technology have improved the annual detection rate of pancreatic cystic lesions, but the preoperative diagnosis of pancreatic cystic lesions remains unclear. Thus, the usefulness of single operator cholangioscopy (SOC) as a diagnostic imaging tool for pancreatic cystic lesions is worth investigating. We performed an intracystic visual examination of pancreatic cystic lesions using SOC to determine the diagnostic value of SOC for pancreatic cystic lesions...
February 6, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28185647/supratotal-resection-of-diffuse-gliomas%C3%A2-%C3%A2-an-overview-of-its-multifaceted-implications
#16
REVIEW
Y N Yordanova, H Duffau
Successful management of diffuse low-grade and high-grade gliomas in adults is a challenge for neuro-oncologists. Indeed, due to their highly infiltrative feature, these diseases remain incurable despite therapeutic advances. Nevertheless, the elaboration of individualized therapeutic strategies has led to an improvement of both overall survival and quality of life. In particular, the impact of surgical resection on diffuse glioma survival has been extensively demonstrated. However, this impact is significant only when the resection is total (i...
February 6, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28180189/far-red-and-near-infrared-seminaphthofluorophores-for-targeted-pancreatic-cancer-imaging
#17
Lei Wang, Connor W Barth, Martha Sibrian-Vazquez, Jorge O Escobedo, Mark Lowry, John Muschler, Haiyan Li, Summer L Gibbs, Robert M Strongin
Molecular probes that selectively highlight pancreatic cancer (PC) tissue have the potential to improve pancreatic ductal adenocarcinoma (PDAC) margin assessment through the selective highlighting of individual PC cells. Herein, we report a simple and unique family of systematically modified red and near-infrared fluorescent probes that exhibit a field-effect-derived redshift. Two of thirteen probes distributed to the normal mouse pancreas following systemic administration. One selectively accumulated in genetically modified mouse models of PDAC...
January 31, 2017: ACS Omega
https://www.readbyqxmd.com/read/28176960/pseudophakic-astigmatism-reduction-with-femtosecond-laser-assisted-corneal-arcuate-incisions-a-pilot-study
#18
Clayton Blehm, Richard Potvin
PURPOSE: The aim of this study was to assess the effectiveness of the Verion-LenSx guided arcuate incision technique to reduce refractive astigmatism in a pseudophakic population. PATIENTS AND METHODS: A prospective single-arm study was conducted in which one or both eyes of subjects required reduction of 1.0-2.0 D of refractive astigmatism after previous cataract surgery or refractive lens exchange. The surgeon used the refractive cylinder in the eye and the Woodcock astigmatism nomogram for preoperative planning, while the LenSx femtosecond laser with the Verion Image Guided System was used to create all arcuate incisions...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28175506/305%C3%A2-the-invest-trial-a-randomized-controlled-trial-to-investigate-the-safety-and-efficacy-of-image-guided-minimally-invasive-endoscopic-surgery-with-apollo-vs-best-medical-management-for-supratentorial-intracerebral-hemorrhage
#19
https://www.readbyqxmd.com/read/28175414/113%C3%A2-initial-experience-with-an-image-guided-robotically-positioned-optical-platform-for-aneurysm-surgery
#20
Amin B Kassam, Srikant S Chakravarthi, Juanita Celix, Melanie Fukui, Jonathan Jennings, Sarika Walia, Richard A Rovin
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
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