scholarly journals Preoperative and Operative Predictors of Single Fetal Demise After Laser Ablation for Twin-to-Twin Transfusion Syndrome

2022 ◽  
Vol 226 (1) ◽  
pp. S51
Author(s):  
Hiba J. Mustafa ◽  
Ali Javinani ◽  
Christopher Harman ◽  
Eyal Krispin ◽  
Alireza A. Shamshirsaz ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Fetal Demise

Twin-Twin Transfusion Syndrome Complicated by Proximate Placental Cord Insertion Sites: Endoscopic Clip-Assisted Laser Occlusion

2020 ◽  
Vol 47 (10) ◽  
pp. 779-784
Author(s):  
Andrew H. Chon ◽  
Huyen Q. Pham ◽  
Ramen H. Chmait
Keyword(s):  
Laser Ablation ◽  
Thermal Injury ◽  
Therapeutic Option ◽  
Stage Iv ◽  
Minimal Energy ◽  
Endoscopic Clip ◽  
Fetal Demise ◽  
Case Presentation ◽  
Insertion Sites ◽  
Placental Vessel

<b><i>Introduction:</i></b> Severe twin-twin transfusion syndrome (TTTS) with a large vascular communication between proximate placental cord insertion sites is a therapeutic dilemma because laser ablation may cause thermal injury to the cord roots and subsequent fetal demise. <b><i>Case Presentation:</i></b> Stage IV TTTS with placental cord insertion sites 1.3 cm apart and with an intervening large arterio-arterial (AA) anastomosis presented for treatment. The application of endoclips onto the large AA anastomosis between the cord roots allowed for successful laser occlusion using minimal energy. Both the donor and recipient twins were alive and well at 6 months of age. <b><i>Conclusion:</i></b> Endoscopic clip-assisted laser occlusion of a placental vessel is technically feasible and may be a useful therapeutic option in select cases.

Observations on the growth of YBa2Cu3O7-δ thin films on MgO by pulsed-laser ablation

1991 ◽  
Vol 49 ◽  
pp. 1068-1069
Author(s):  
M. Grant Norton ◽  
C. Barry Carter
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Laser Ablation ◽  
Substrate Surface ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Laser Ablation Process ◽  
Deposition Parameters

Pulsed-laser ablation has been widely used to produce high-quality thin films of YBa2Cu3O7-δ on a range of substrate materials. The nonequilibrium nature of the process allows congruent deposition of oxides with complex stoichiometrics. In the high power density regime produced by the UV excimer lasers the ablated species includes a mixture of neutral atoms, molecules and ions. All these species play an important role in thin-film deposition. However, changes in the deposition parameters have been shown to affect the microstructure of thin YBa2Cu3O7-δ films. The formation of metastable configurations is possible because at the low substrate temperatures used, only shortrange rearrangement on the substrate surface can occur. The parameters associated directly with the laser ablation process, those determining the nature of the process, e g. thermal or nonthermal volatilization, have been classified as ‘primary parameters'. Other parameters may also affect the microstructure of the thin film. In this paper, the effects of these ‘secondary parameters' on the microstructure of YBa2Cu3O7-δ films will be discussed. Examples of 'secondary parameters' include the substrate temperature and the oxygen partial pressure during deposition.

153: Successful Gold Nanoshell Assisted Laser Ablation of Prostate Carcinoma in Vitro

2007 ◽  
Vol 177 (4S) ◽  
pp. 52-52
Author(s):  
Joshua M. Stem ◽  
Jer-Tsang Hsieh ◽  
Sangtae Park ◽  
Yair Lotan ◽  
Jeffrey A. Cadeddu
Keyword(s):  
Laser Ablation ◽  
Prostate Carcinoma ◽  
Gold Nanoshell

ENDOSCOPIC SUBMUCOSAL LASER ABLATION FOR THE TREATMENT OF TYPE 2 DIABETES – PRELIMINARY FIRST IN HUMAN STUDY RESULTS

2019 ◽  
Author(s):  
M Benes ◽  
I Marcovitch ◽  
M Mraz ◽  
A Herschkovitz ◽  
M Haluzik
Keyword(s):  
Type 2 Diabetes ◽  
Laser Ablation ◽  
Human Study ◽  
Study Results

Possibilities of using the Colibri system for endovenous laser ablation

2020 ◽  
Vol 26 (2) ◽  
pp. 103
Author(s):  
D. A. Borsuk ◽  
A. A. Fokin
Keyword(s):  
Laser Ablation ◽  
Endovenous Laser Ablation
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