Dose conformity and falloff in single-lesion intracranial SRS with DCA and VMAT methods.

Background: Intracranial stereotactic radiosurgery (SRS) aims at achieving highly conformal dose distribution and, at the same time, attaining rapid dose falloff outside the treatment target. SRS is performed using different techniques including dynamic conformal arcs (DCA) and volumetric modulated arc therapy (VMAT).

Purpose: In this study, we compare dose conformity and falloff in DCA and VMAT plans for SRS with a single target.

Toward an improved assessment of dose conformity in radiotherapy.

Background: Evaluation of dose conformity is important to ensure minimum dose to normal tissue and sufficient dose coverage of the planning target volume (PTV). The existing conformity indices depend on the PTV volume and do not differentiate between two different scenarios: overdosing normal tissue and underdosing PTV.

Purpose: In this study, we introduce a novel index to assess conformity of dose distributions in radiotherapy.

Exploring the Gender-Specific Impact of Intraperitoneal Bupivacaine on Early Postoperative Pain in Sleeve Gastrectomy.

Early postoperative pain is a significant problem in bariatric and metabolic surgery. Our study aimed to investigate the potential role of intraperitoneal bupivacaine hydrochloride in pain management in the early postoperative period after bariatric and metabolic surgery. This double-blind, prospective, randomized, controlled study included 68 individuals who underwent bariatric and metabolic surgery at the Department of Surgery, Istanbul Aydin University Hospital.

Novel approach for the evaluation of dose conformity in radiotherapy.

Purpose: We describe a new approach to evaluate conformity of dose distributions in radiotherapy.

Methods: The suggested conformity factor λ is defined by using existing conformity indices and expansion of the planning target volume (PTV). If the average distance ( ) between the PTV and reference isodose surface and an arbitrarily selected PTV expansion margin ( ) are both much smaller than the size of the PTV, then λ approximately equals the ratio .

Systematic assessment of complications after laparoscopic colorectal surgery for advanced colorectal cancer: A retrospective study using Clavien-Dindo classification, 5-year experience.

Aim: The presence and frequency of surgical complications indicate the quality of the surgery performed. However, a standard classification system should specify, describe, and compare complications. Clavien Dindo classification is an easily applicable classification in the evaluation of complications.