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Precision Surgery

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https://www.readbyqxmd.com/read/27913755/applications-of-three-dimensional-printing-in-surgery
#1
REVIEW
Chi Li, Tsz Fung Cheung, Vei Chen Fan, Kin Man Sin, Chrisity Wai Yan Wong, Gilberto Ka Kit Leung
Three-dimensional (3D) printing is a rapidly advancing technology in the field of surgery. This article reviews its contemporary applications in 3 aspects of surgery, namely, surgical planning, implants and prostheses, and education and training. Three-dimensional printing technology can contribute to surgical planning by depicting precise personalized anatomy and thus a potential improvement in surgical outcome. For implants and prosthesis, the technology might overcome the limitations of conventional methods such as visual discrepancy from the recipient's body and unmatching anatomy...
December 2, 2016: Surgical Innovation
https://www.readbyqxmd.com/read/27906769/measuring-harm-in-health-care-optimizing-adverse-event-review
#2
Kathleen E Walsh, Polina Harik, Kathleen M Mazor, Deborah Perfetto, Milena Anatchkova, Colleen Biggins, Joann Wagner, Pamela J Schoettker, Cassandra Firneno, Robert Klugman, Jennifer Tjia
OBJECTIVE: The objective of this study was to identify modifiable factors that improve the reliability of ratings of severity of health care-associated harm in clinical practice improvement and research. METHODS: A diverse group of clinicians rated 8 types of adverse events: blood product, device or medical/surgical supply, fall, health care-associated infection, medication, perinatal, pressure ulcer, surgery. We used a generalizability theory framework to estimate the impact of number of raters, rater experience, and rater provider type on reliability...
November 30, 2016: Medical Care
https://www.readbyqxmd.com/read/27904855/multiple-endocrine-neoplasia-type-1-with-anterior-mediastinal-parathyroid-adenoma-successful-localization-using-tc-99m-sestamibi-spect-ct
#3
Hye Lim Park, Ie Ryung Yoo, Sung Hoon Kim, Sohee Lee
The most common manifestation of multiple endocrine neoplasia type 1 (MEN1) is hyperparathyroidism. Treatment of hyperparathyroidism in MEN patients is surgical removal of the parathyroid glands, however ectopic parathyroid gland is challenging for treatment. A 51-year-old female, the eldest of 3 MEN1 sisters, had hyperparathyroidism with ectopic parathyroid adenoma in the mediastinal para-aortic region, which was detected by technetium-99m (Tc-99m) sestamibi scintigraphy and single-photon emission computed tomography/computed tomography (SPECT/CT)...
December 2016: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/27903462/radiomic-based-pathological-response-prediction-from-primary-tumors-and-lymph-nodes-in-nsclc
#4
Thibaud P Coroller, Vishesh Agrawal, Elizabeth Huynh, Vivek Narayan, Stephanie W Lee, Raymond H Mak, Hugo J W L Aerts
INTRODUCTION: Non-invasive biomarkers that capture the total tumor burden could provide important complementary information for precision medicine to aid clinical decision-making. We investigated the value of radiomic data, extracted from pre-treatment computed tomography (CT) images of the primary tumor and lymph nodes, in predicting pathological response following neoadjuvant chemoradiation prior to surgery. METHODS: Eighty-five patients with resectable locally-advanced (stage II-III) non-small cell lung cancer (NSCLC) (median age: 60...
November 26, 2016: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/27898468/update-on-ciliary-body-laser-procedures
#5
Behzad Amoozgar, Eileen N Phan, Shan C Lin, Ying Han
PURPOSE OF REVIEW: There are currently various options available for glaucoma treatment procedures ranging from laser to penetrating to nonpenetrating surgeries. Innovations in glaucoma surgical therapeutics include features such as external application, focused tissue effects, and minimal manipulation as these factors all help lower the risk of side-effects in addition to increasing the success rate of the treatment. Traditional diode laser transscleral cyclophotocoagulation (TSCPC) is invasive and destructive...
November 25, 2016: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/27898431/improving-outcome-of-trauma-patients-by-implementing-patient-blood-management
#6
Christoph Füllenbach, Kai Zacharowski, Patrick Meybohm
PURPOSE OF REVIEW: Patient blood management aims to improve patient outcome and safety by reducing the number of unnecessary red blood cell transfusions and vitalizing patient-specific anemia reserves. While this is increasingly recognized as best clinical practice in elective surgery, the implementation in the setting of trauma is restrained because of typically nonelective (emergency) surgery and, in specific circumstances, allogeneic blood transfusions as life-saving therapy. RECENT FINDINGS: Viscoelastic diagnostics allow a precise identification of trauma-induced coagulopathy...
November 24, 2016: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/27896519/image-guidance-technology-and-the-surgical-resection-of-spinal-column-tumors
#7
REVIEW
Bhargav Desai, Jonathan Hobbs, Grant Hartung, Guoren Xu, Ziya L Gokaslan, Andreas Linninger, Ankit I Mehta
Precision imaging is paramount to achieving success in surgical resection of many spinal tumors, whether the goal involves guiding a surgical cure for primary tumors or improving neurological decompression for metastatic lesions. Pre-operatively, image visualization is intimately involved with defining a clear target and surgical planning. Intra-operatively, image-guidance technology allows for surgeons to maximize the probability for gross total resection of spinal cord tumors and minimize damage to adjacent structures...
November 28, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27896018/development-and-preliminary-results-of-bimanual-smart-micro-surgical-system-using-a-ball-lens-coupled-oct-distance-sensor
#8
Dongwoo Koo, Hyun-Cheol Park, Peter L Gehlbach, Cheol Song
Bimanual surgery enhances surgical effectiveness and is required to successfully accomplish complex microsurgical tasks. The essential advantage is the ability to simultaneously grasp tissue with one hand to provide counter traction or exposure, while dissecting with the other. Towards enhancing the precision and safety of bimanual microsurgery we present a bimanual SMART micro-surgical system for a preliminary ex-vivo study. To the best of our knowledge, this is the first demonstration of a handheld bimanual microsurgical system...
November 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27895733/improved-laparoscopic-nephron-sparing-surgery-for-renal-cell-carcinoma-based-on-the-precise-anatomy-of-the-nephron
#9
Gang Guo, Wei Cai, Xu Zhang
The aim of the present study was to investigate a method of laparoscopic nephron-sparing surgery (LNSS) for renal cell carcinoma (RCC) based on the precise anatomy of the nephron, and to decrease the incidence of hemorrhage and urinary leakage. Between January 2012 and December 2013, 31 patients who presented to the General Hospital of the People's Liberation Army (Beijing, China) were treated for RCC. The mean tumor size was 3.4±0.7 cm in diameter (range, 1.2-6.0 cm). During surgery, the renal artery was blocked, and subsequently, an incision in the renal capsule and renal cortex was performed, at 3-5 mm from the tumor edge...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27894664/tomographic-osteometry-of-the-zygomatic-bone-applied-to-traumatology-of-facial-bones-preliminary-retrospective-study-of-zygomatic-summit-in-28-patients
#10
Barbara Lerhe, Sarah Alshehri, Denis Ferachon, Sébastien Dejean, Anne Sophie Salabert, Raphael Lopez
BACKGROUND: The available referential measures defining the zygomatic bone morphology are adequate enough for full determination of the zygoma positioning, especially for trauma surgery, but osteometric analysis of the zygoma positioning based on tomographic examinations could be useful in peroperative and postoperative imaging. In this study, we propose referential measures, taking into account the morphology and the symmetry of the zygoma. In addition, the reliability and reproducibility are considered...
October 28, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27893559/personalized-reconstruction-of-traumatic-orbital-defects-based-on-precise-three-dimensional-orientation-and-measurements-of-the-globe
#11
Li Huang, Lisong Lin, Zhihong Wang, Bin Shi, Xiaofeng Zhu, Yu Qiu, Yue Huang, Xueyuan Yu, Yunyang Liao
OBJECTIVE: The aim of the study was to precisely assess the severity of traumatic orbital defects and techniques for personalized orbital reconstruction. METHODS: A retrospective study was conducted in 97 patients with traumatic orbital defects who were treated in our hospital between July 2003 and June 2012. Pre- and postoperative spiral computed tomography scans were performed in all patients. A spatial orientation technique was used to measure the three-dimensional position of the globe and calculate the changes in the orbital volume...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27893375/liver-segmentation-on-ct-and-mr-using-laplacian-mesh-optimization
#12
Gabriel Chartrand, Thierry Cresson, Ramnada Chav, Akshat Gotra, An Tang, Jacques A de Guise
OBJECTIVE: The purpose of this paper is to describe a semi-automated segmentation method for the liver and evaluate its performance on CT-scan and MR images. METHODS: First, an approximate 3D model of the liver is initialized from a few usergenerated contours to globally outline the liver shape. The model is then automatically deformed by a Laplacian mesh optimization scheme until it precisely delineates the patient's liver. A correction tool was implemented to allow the user to improve the segmentation until satisfaction...
November 21, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27892493/autologous-temporomandibular-joint-reconstruction-independent-of-exogenous-additives-a-proof-of-concept-study-for-guided-self-generation
#13
Jiao Wei, Tanja Herrler, Dong Han, Kai Liu, Rulin Huang, Markus Guba, Chuanchang Dai, Qingfeng Li
Joint defects are complex and difficult to reconstruct. By exploiting the body's own regenerative capacity, we aimed to individually generate anatomically precise neo-tissue constructs for autologous joint reconstruction without using any exogenous additives. In a goat model, CT scans of the mandibular condyle including articular surface and a large portion of the ascending ramus were processed using computer-aided design and manufacturing. A corresponding hydroxylapatite negative mold was printed in 3D and temporarily embedded into the transition zone of costal periosteum and perichondrium...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27891366/evaluation-of-the-central-corneal-thickness-with-anterior-segment-optical-coherence-tomogram-after-penetrating-keratoplasty
#14
Anuradha Raj, Renu Dhasmana, Harsh Bahadur, Ramesh Chander Nagpal
INTRODUCTION: Graft central thickness evaluates the graft quality which affects the outcome of Penetrating Keratoplasty (PK). It varies at different point of time after PK. Anterior Segment Optical Coherence Tomography (ASOCT) can measure graft's central thickness with quite high precision. AIM: The purpose of the study was to monitor the Central Corneal thickness (CCT) with ASOCT after PK and to evaluate its relationship with the pre-operative diagnosis. MATERIALS AND METHODS: This is an observational retrospective study where records of optical PK done in December 2012 and June 2015 were reviewed...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891032/clinical-anatomy-and-significance-of-the-thoracic-intervertebral-foramen-a-cadaveric-study-and-review-of-the-literature
#15
Grigorios Gkasdaris, Grigorios Tripsianis, Konstantinos Kotopoulos, Stylianos Kapetanakis
INTRODUCTION: The literature is lacking information on the anatomy and the osseous dimensions of the thoracic intervertebral foramen (IVF). We describe the anatomy of the broader area, and we proceed with morphometric data of the vertebrae and the foramina. Depiction of these features is provided with imaging and illustrations. The purpose of this paper is to survey and present the anatomy of the foramen as a whole and provide baseline statistical data. MATERIALS AND METHODS: We review relevant literature, and we present data obtained from skeletal samples of known population and sex...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27889223/laparoscopic-pyeloplasty-initial-experience-with-3d-vision-laparoscopy-and-articulating-shears
#16
Hiba Abou-Haidar, Talal Al-Qaoud, Roman Jednak, Alex Brzezinski, Mohamed El-Sherbiny, John-Paul Capolicchio
INTRODUCTION: Laparoscopic reconstructive surgery is associated with a steep learning curve related to the use of two-dimensional (2D) vision and rigid instruments. With the advent of robotic surgery, three-dimensional (3D) vision, and articulated instruments, this learning curve has been facilitated. We present a hybrid alternative to robotic surgery, using laparoscopy with 3D vision and articulated shears. OBJECTIVE: To compare outcomes of children undergoing pyeloplasty using 3D laparoscopy with articulated instruments with those undergoing the same surgery using standard laparoscopy with 2D vision and rigid instruments...
October 24, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27886974/evaluating-coding-accuracy-in-general-surgery-residents-accreditation-council-for-graduate-medical-education-procedural-case-logs
#17
REVIEW
Fadi Balla, Tabitha Garwe, Prasenjeet Motghare, Tessa Stamile, Jennifer Kim, Heidi Mahnken, Jason Lees
INTRODUCTION: The Accreditation Council for Graduate Medical Education (ACGME) case log captures resident operative experience based on Current Procedural Terminology (CPT) codes and is used to track operative experience during residency. With increasing emphasis on resident operative experiences, coding is more important than ever. It has been shown in other surgical specialties at similar institutions that the residents' ACGME case log may not accurately reflect their operative experience...
November 2016: Journal of Surgical Education
https://www.readbyqxmd.com/read/27885858/a-systematic-review-of-outcomes-following-stereotactic-ablative-radiotherapy-in-the-treatment-of-early-stage-primary-lung-cancer
#18
Patrick Murray, Kevin Franks, Gerard G Hanna
Stereotactic ablative body radiotherapy (SABR) describes a radiotherapy technique where high doses of radiation are precisely delivered to an extra-cranial target within the body, using either a single fraction of radiotherapy or using multiple small number of fractions. SABR has now become the standard of care treatment for patients with early stage NSCLC for whom surgery is not appropriate. This systematic review considers the evidence supporting the use of SABR in early stage NSCLC, reported toxicity rates, the use of SABR in centrally located NSCLC, the use of SABR as salvage therapy following surgery or radiotherapy and future potential drug combinations with SABR...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27882111/complete-prefrontal-lobe-isolation-surgery-for-recurrent-epilepsy-a-case-report
#19
Shaoya Yin, Weipeng Jin, Qingyun Li, Mei Feng, Keke Feng, Hui Shao, Xueqing Zhang, Shimin Wang
Epileptogenic focus resection is less effective for the treatment of frontal lobe epilepsy compared with temporal lobe epilepsy. However, there is currently a lack of effective therapeutic options for patients with frontal lobe epilepsy who are unsuitable for epileptogenic focus resection (such patients with epileptogenic foci in one frontal lobe in which the precise epileptic foci cannot be determined), or who experience recurrent epilepsy following epileptogenic focus resection. The present study reports a patient with frontal lobe epilepsy who underwent successful frontal lobe isolation surgery following a previous unsuccessful epileptogenic focus resection surgery...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27879157/secondary-submucosal-vocal-cyst-following-pulsed-dye-laser-application-for-sulcus-vocalis
#20
Joo Hyun Kim, Hye Jin Hwang, Ji Hyung Kim, Min Seok Kang, Hong-Shik Choi, Hyung Kwon Byeon
CONCLUSION: Submucosal vocal cyst can occur as a distinct long-term sequelae following pulsed dye laser (PDL) application for sulcus vocalis. It is recommended that the cyst lesion should be surgically removed for treatment. Optimal and precise irradiation of PDL is considered important to avoid the development of a such complication. OBJECTIVE: After several years of clinical practice and an extended period of follow-up of the patients who received PDL application in treating sulcus vocalis, the authors have encountered several cases of secondary submucosal vocal cyst development...
November 23, 2016: Acta Oto-laryngologica
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