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https://www.readbyqxmd.com/read/28743122/utility-of-transbronchial-lung-cryobiopsy-in-non-interstitial-diseases
#1
Olivia Sánchez-Cabral, Dina Martínez-Mendoza, Sebastián Fernandez-Bussy, Berenice López-González, Carolina Perea-Talamantes, Rosa María Rivera-Rosales, César Luna-Rivero, José Arturo Martínez-Orozco, Luis Felipe Flores-Suárez, Patricio Santillán-Doherty, Gustavo Reyes-Terán
BACKGROUND: Transbronchial lung cryobiopsy (TLCB), performed with a flexible cryoprobe, is an interventional pulmonology procedure that has proved its diagnostic value for interstitial pulmonary disease. However, it has not been explored extensively as a diagnostic tool for patients with non-interstitial lung pathology, including infectious and malignant diseases. OBJECTIVE: To evaluate the diagnostic yield and safety of an interventional pulmonology approach that integrates TLCB and bronchoalveolar lavage (BAL) for the diagnosis of non-interstitial pulmonary disease...
July 26, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28731368/computerized-planning-of-prostate-cryosurgery-and-shape-considerations
#2
Purva Joshi, Anjali Sehrawat, Yoed Rabin
The current study aims to explore possible relationships between various prostate shapes and the difficulty in creating a computer-based plan for cryosurgery. This research effort is a part of an ongoing study to develop computational means in order to improve cryosurgery training and education. This study uses a computerized planner-a key building block of a recently developed prototype for cryosurgery training. The quality of planning is measured by the overall defect volume, a proprietary concept which refers to undercooled areas internal to the target region and overcooled areas external to it...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28727387/focal-cryotherapy-step-by-step-technique-description
#3
Cristina Redondo, Victor Srougi, José Batista da Costa, Mohammed Baghdad, Guillermo Velilla, Igor Nunes-Silva, Sebastien Bergerat, Silvia Garcia-Barreras, François Rozet, Alexandre Ingels, Marc Galiano, Rafael Sanchez-Salas, Eric Barret, Xavier Cathelineau
INTRODUCTION AND OBJECTIVE: Focal cryotherapy emerged as an efficient option to treat favorable and localized prostate cancer (PCa). The purpose of this video is to describe the procedure step by step. MATERIALS AND METHODS: We present the case of a 68 year-old man with localized PCa in the anterior aspect of the prostate. RESULTS: The procedure is performed under general anesthesia, with the patient in lithotomy position. Briefly, the equipament utilized includes the cryotherapy console coupled with an ultrasound system, argon and helium gas bottles, cryoprobes, temperature probes and an urethral warming catheter...
July 20, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28717259/a-computerized-tutor-prototype-for-prostate-cryotherapy-key-building-blocks-and-system-evaluation
#4
Yoed Rabin, Kenji Shimada, Purva Joshi, Anjali Sehrawat, Robert Keelan, Dona M Wilfong, James T McCormick
This paper focuses on the evaluation of a prototype for a computer-based tutoring system for prostate cryosurgery, while reviewing its key building blocks and their benchmark performance. The tutoring system lists geometrical constraints of cryoprobe placement, displays a rendered shape of the prostate, simulates cryoprobe insertion, enables distance measurements, simulates the corresponding thermal history, and evaluates the mismatch between the target region shape and a pre-selected planning isotherm. The quality of trainee planning is measured in comparison with a computer-generated plan, created for each case study by a previously developed planning algorithm, known as bubble-packing...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28679177/cryotherapy-for-low-risk-prostate-cancer-oncological-and-functional-medium-term-outcomes-a-three-center-prospective-study
#5
Valerian Ciprian Lucan, Franco Lugnani, Salvatore Butticè, Emre Sener, Christopher Netsch, Michele Talso, Francesco Cantiello, Rosa Pappalardo, Carlo Magno
OBJECTIVES: Analyze the oncologic and functional outcomes in patients affected by low risk prostate cancer underwent prostate cryotherapy. Materiasl and methods: It's a prospective tricentric study of 434 patients treated with prostate cryoablation for low risk prostate cancer. By low risk we refer to the D'Amico's risk classification. Two cycles of freezing/thawing are run for each patient following the technique described by Onik. RESULTS: For the 434 patients, the median age was 66 years with a standard deviation of ± 6...
June 30, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28656131/iatrogenic-bleeding-during-flexible-bronchoscopy-risk-factors-prophylactic-measures-and-management
#6
REVIEW
Maurizio Bernasconi, Coenraad F N Koegelenberg, Angela Koutsokera, Adam Ogna, Alessio Casutt, Laurent Nicod, Alban Lovis
Significant iatrogenic bleeding during flexible bronchoscopy is fortunately rare and usually self-limiting. Life-threatening bleeding, however, can occur, especially after conventional or cryoprobe-assisted transbronchial biopsy. The aim of this review is to provide the practising pulmonologist with a concise overview of the incidence, severity and risk factors for bleeding, to provide sensible advice on prophylactic measures and to suggest a plan of action in the case of significant bleeding. Bronchoscopy units should have a standardised approach and plan of action in the case of life-threatening haemorrhage...
April 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28652159/skin-to-tumor-distance-predicts-treatment-failure-of-t1a-renal-cell-carcinoma-following-percutaneous-cryoablation
#7
Simone L Vernez, Zhamshid Okhunov, Kamaljot Kaler, Ramy F Youssef, Rahul Dutta, Arkadiy Palvanov, Paras Shah, Kathryn Osann, David N Siegel, Igor Lobko, Louis Kavoussi, Ralph V Clayman, Jaime Landman
OBJECTIVE: To determine the impact of skin-to-tumor (STT) distance on the risk for treatment failure following PCA. METHODS: We retrospectively reviewed patients who underwent PCA with documented T1a recurrent renal cell carcinoma (RCC) at two academic centers between 2005 and 2015. Patient demographics, tumor characteristics, perioperative and post-operative course variables were collected. Additionally, we measured the STT by averaging the distance from the skin to the center of the tumor at 0, 45 and 90 degrees on preoperative computed tomography imaging...
June 23, 2017: Urology
https://www.readbyqxmd.com/read/28593055/a-surgical-cryoprobe-for-targeted-transcorneal-freezing-and-endothelial-cell-removal
#8
Alina Akhbanbetova, Shinichiro Nakano, Stacy L Littlechild, Robert D Young, Madara Zvirgzdina, Nigel J Fullwood, Ian Weston, Philip Weston, Shigeru Kinoshita, Naoki Okumura, Noriko Koizumi, Andrew J Quantock
PURPOSE: To examine the effects of transcorneal freezing using a new cryoprobe designed for corneal endothelial surgery. METHODS: A freezing console employing nitrous oxide as a cryogen was used to cool a series of different cryoprobe tip designs made of silver for high thermal conductivity. In vitro studies were conducted on 426 porcine corneas, followed by preliminary in vivo investigations on three rabbit corneas. RESULTS: The corneal epithelium was destroyed by transcorneal freezing, as expected; however, the epithelial basement membrane remained intact...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28580148/post-tuberculosis-mycetoma-bronchoscopic-removal
#9
Liam J Chawke, Eoin B Hunt, Marcus P Kennedy, Desmond M Murphy
A 76-year-old male non-smoker presented to our institution with cough and haemoptysis. He had been treated for cavitatory pulmonary Mycobacterium tuberculosis of the right upper lobe 10 years previously. Chest radiograph and subsequent computed tomography (CT) of the chest demonstrated a right upper cavity containing a mass suspicious for mycetoma. Flexible bronchoscopy under conscious sedation demonstrated a mass obstructing the anterior segment of the right upper lobe. The abnormality was subsequently removed using a flexible endobronchial cryoprobe...
July 2017: Respirology Case Reports
https://www.readbyqxmd.com/read/28558164/advanced-solvent-signal-suppression-for-the-acquisition-of-1d-and-2d-nmr-spectra-of-scotch-whisky
#10
Will Kew, Nicholle G A Bell, Ian Goodall, Dušan Uhrín
A simple and robust solvent suppression technique that enables acquisition of high quality 1D (1) H NMR spectra of alcoholic beverages on cryoprobe instruments was developed and applied to acquire NMR spectra of Scotch Whisky. The method uses three channels to suppress signals of water and ethanol, including those of (13) C satellites of ethanol. It is executed in automation allowing high throughput investigations of alcoholic beverages. Based on the well-established 1D NOESY solvent suppression technique, this method suppresses the solvent at the beginning of the pulse sequence, producing pure phase signals minimally affected by the relaxation...
May 30, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28543277/experimental-study-of-cryofreezing-energy-applications-on-the-ventricular-myocardium-using-sheep-hearts
#11
Kaoru Okishige, Peter L Friedman
BACKGROUND: Cryofreezing energy has been utilized to abolish arrhythmogenic substrates of various kinds of tachyarrhythmias. However, systematic electrophysiological and histological investigations of cryothermia have never been performed. The aim of this study was to clarify those aspects using sheep beating hearts. METHODS: A total of eight adult sheep were utilized under total anesthesia, and a pericardial cradle was made by opening the pericardium. Eight epicardial plaque electrodes were sutured on the epicardial surface of the left ventricle 2∼3 cm apart from each other...
May 23, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28514898/assessment-of-cryosurgical-device-performance-using-a-3d-tissue-engineered-cancer-model
#12
John M Baust, Anthony Robilotto, Kristi K Snyder, Kimberly Santucci, Jennie Stewart, Robert Van Buskirk, John G Baust
As the clinical use of cryoablation for the treatment of cancer has increased, so too has the need for knowledge on the dynamic environment within the frozen mass created by a cryoprobe. While a number of factors exist, an understanding of the iceball size, critical isotherm distribution/penetration, and the resultant lethal zone created by a cryoprobe are critical for clinical application. To this end, cryoprobe performance is typically characterized based on the iceball size and temperature penetration in phantom gel models...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28412936/-1-h-nmr-analysis-of-feces-new-possibilities-in-the-helminthes-infections-research
#13
Sarantos Kostidis, Daria Kokova, Natalia Dementeva, Irina V Saltykova, Hye Kyong Kim, Young Hae Choi, Oleg A Mayboroda
BACKGROUND: Analysis of the stool samples is an essential part of routine diagnostics of the helminthes infections. However, the standard methods such Kato and Kato-Katz utilize only a fraction of the information available. Here we present a method based on the nuclear magnetic resonance spectroscopy (NMR) which could be auxiliary to the standard procedures by evaluating the complex metabolic profiles (or phenotypes) of the samples. METHOD: The samples were collected over the period of June-July 2015, frozen at -20 °C at the site of collection and transferred within four hours for the permanent storage at -80 °C...
April 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28353119/safety-and-feasibility-of-pleural-cryobiopsy-compared-to-forceps-biopsy-during-semi-rigid-pleuroscopy
#14
Vikas Pathak, Ray W Shepherd, Ehab Hussein, Rajiv Malhotra
BACKGROUND: Pleural biopsy is often obtained in patients with undiagnosed exudative pleural effusion during pleuroscopy. Standard forceps have been traditionally used for the biopsy. Cryoprobes are being increasingly used for transbronchial lung biopsy as they obtain larger specimens and have less crush artifact. However, the safety and feasibility of cryoprobe biopsy compared to standard forceps for pleural biopsy has not been fully assessed. OBJECTIVES: The objective of this study was to demonstrate the safety and feasibility of cryoprobe biopsy in the pleural space using semi-rigid pleuroscopy...
March 28, 2017: Lung
https://www.readbyqxmd.com/read/28323734/radial-probe-ultrasound-guided-cryobiopsy
#15
Ilya G Berim, Ali I Saeed, Ahmed Awab, Adam Highley, Agnes Colanta, Fawad Chaudry
Fluoroscopy-guided transbronchial forceps biopsy has a low diagnostic yield in patients with radiographic suspicion of interstitial lung disease. Cryobiopsy has a higher diagnostic yield likely due to preserved lung architecture and larger biopsies; however, there is an increased risk of major airway bleeding and pneumothorax. Simultaneous use of endobronchial balloon blocker allows for containment of bleeding after cryobiopsy to the affected lobe. In the current article we describe use of radial ultrasound in identification of a target lung parenchyma without a major blood vessel adjacent to distal bronchi...
April 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28245447/transbronchial-lung-cryobiopsy-in-diffuse-parenchymal-lung-disease-comparison-between-biopsy-from-1-segment-and-biopsy-from-2-segments-diagnostic-yield-and-complications
#16
Claudia Ravaglia, Athol U Wells, Sara Tomassetti, Alessandra Dubini, Alberto Cavazza, Sara Piciucchi, Nicola Sverzellati, Carlo Gurioli, Christian Gurioli, Ulrich Costabel, Paola Tantalocco, Jay H Ryu, Marco Chilosi, Venerino Poletti
BACKGROUND: Transbronchial lung cryobiopsy is an innovative method of obtaining samples from the parenchyma of patients with diffuse parenchymal lung diseases. However, the technique is not yet standardized, and uncertainty exists about the optimal protocol, including the number of samples, the biopsy size, and the choice of the biopsy site. OBJECTIVES: To compare the diagnostic yield and complications of cryobiopsy with different strategies adopted to sample lung tissue (number of samples, biopsy site, and sample size)...
2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28169912/radial-probe-ultrasound-guided-cryobiopsy
#17
Ilya G Berim, Ali I Saeed, Ahmed Awab, Adam Highley, Agnes Colanta, Fawad Chaudry
Fluoroscopy-guided transbronchial forceps biopsy has a low diagnostic yield in patients with radiographic suspicion of interstitial lung disease. Cryobiopsy has a higher diagnostic yield likely due to preserved lung architecture and larger biopsies; however, there is an increased risk of major airway bleeding and pneumothorax. Simultaneous use of endobronchial balloon blocker allows for containment of bleeding after cryobiopsy to the affected lobe. In the current article we describe use of radial ultrasound in identification of a target lung parenchyma without a major blood vessel adjacent to distal bronchi...
February 6, 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28114787/multipoint-thermal-sensors-associated-with-improved-oncologic-outcomes-following-cryoablation
#18
Jeremy W Martin, Roshan M Patel, Zhamshid Okhunov, Aashay Vyas, Duane Vajgrt, Ralph V Clayman
INTRODUCTION: Cryoablation (CA) is a minimally invasive modality for the management of small renal cortical neoplasms (RCN). Effective ablation is dependent on achieving target temperatures during CA that result in tumor cell death. We investigated long-term oncologic outcomes following CA using multipoint thermal sensors (MTS), which allow precise temperature determination at four points along the needle. METHODS: We performed a retrospective review of 20 patients with <4 cm RCN who underwent de novo CA from 2005 to 2009...
April 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28076822/an-in-vitro-analysis-of-the-size-and-shape-of-cryolesions-for-facet-joint-denervation
#19
T Wolter, Y Bozhkov, S M Knoeller
OBJECTIVES: Lumbar facet joint syndrome (LFJS) is the cause of lower back pain in 15-54% of the patients. Clinical studies of cryotherapy for LFJS have reported promising outcomes. However, few studies have focused on the technical aspects of cryoneurolysis for LFJS. The aim of the study was to determine the size and shape of cryolesions in vitro and to determine how they are affected by the duration of freezing, size of the cryoprobe and distance and angulation to an osseous boundary layer...
February 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28072428/3d-modelling-on-biodegradable-nanoparticle-enhanced-cryoablation-of-liver-tumor-based-on-real-anatomical-model
#20
S Y Xu, Z Z He, Y X Zhou, J Liu
BACKGROUND: Nanoparticle-enhanced freezing is of great importance for developing a conformal targeted cryoablation for liver tumor with complex shape. However, the safety and biocompatibility of nanoparticles should also be of major concerns. OBJECTIVE: This study is to investigate the enhanced cryoablation mediated by the MgO nanoparticles which are nontoxic, biodegradable, and have few side-effects on the human body. MATERIALS AND METHODS: A three-dimensional numerical model has been developed based on a real geometrical anatomical structure to characterize such nanocryosurgical freezing of liver tumor...
November 2016: Cryo Letters
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