ASSESSMENT OF SET UP ERRORS AND DETERMINATION OF PLANNING TARGET VOLUME MARGINS IN IMAGE GUIDED RADIOTHERAPY FOR CERVICAL CANCER PATIENTS TREATED IN SUPINE POSITION
Journal Title: IJSR-International Journal Of Scientific Research - Year 2019, Vol 8, Issue 6
Abstract
BACKGROUND: Proper positioning of a patient during radiotherapy treatment delivery is crucial for successful implementation of a treatment plan ensuring maximum dose to the target while minimising the dose to the normal tissues. The purpose of this study is to assess the set up errors and to determine the optimal Clinical Target Volume (CTV) to Planning Target Volume (PTV) margins for Cervical Carcinoma patients treated in supine position by Image guided Radiotherapy. METHODS AND MATERIALS: 219 kVCBCT images were acquired for 10 cervical cancer patients treated with Conformal External Beam Radiotherapy using Image Guidance. Daily set-up errors along the three translational directions were analysed, evaluated for systematic and random errors and optimal CTV-PTV margin determined. RESULTS: Corresponding CTV-PTV margins in the X, Y and Z directions were 0.7cm, 1.7cm and 0.4cm respectively. CONCLUSION: IGRT is imperative for ensuring adequate target volume coverage and eliminating geographic miss in IMRT treatment.
Authors and Affiliations
Dr. Apurba Kumar Kalita, Dr. Ghritashee Bora*, Dr. Mouchumee Bhattacharyya, Moirangthem Nara Singh, Dr. Partha Pratim Medhi, Dr. Shashank Bansal
Keywords
Related Articles
- EP ID EP580542
- DOI -
- Views 43
- Downloads 0
Epidemiological study of cases of hanging in Kamrup region, Assam state, India
Suicidal hanging still remains one of the commonest methods of committing suicide. Suicidal hanging is common whereas homicidal and accidental hangings are rare. is is an autopsy based study conducted in the Department...
Sensitivity of Slit Skin Smear examination in suspected Leprosy cases in a tertiary care centre: Rising trends
Introduction: Conventional diagnosis of leprosy in a tertiary care centre. Objective: To study the sensitivity of Slit Skin Smear (SSS) examination in patients suspected of Leprosy in a Medical College Hospital from Jan...
NONLINEAR FINITE ELEMENT ANALYSIS OF LIGHTWEIGHT AGGREGATE REINFORCED CONCRETE SLABS
This paper presents a nonlinear finite element analysis of lightweight aggregate reinforced concrete slab. In this study, the slabs were modelled using ANSYS V.15 nonlinear finite element software. The concrete is modell...
THE COMPARATIVE STUDY TO EVALUATE THE EFFECTIVENESS OF DEXMEDETOMIDINE VERSUS PROPOFOL INTRAVENOUS INFUSION TO FACILITATE AWAKE FIBREOPTIC NASOTRACHEAL INTUBATION.
Awake fiberoptic intubation (AFOI) is the most valuable technique in the management of difficult airway. This study aimed to compare the effectiveness of dexmedetomidine vs propofol infusion in providing conscious sedati...
IN VITRO BIOFILM FORMATION BY UROPATHOGENIC ESCHERICHIA COLI AND ITS PATTERN OF ANTIMICROBIAL SUSCEPTIBILITY
BACKGROUND- The most common cause of urinary tract infection is Escherichia coli, though other bacteria or fungi may rarely be the cause. Recurrent UTI's that are predominantly caused by uropathogenic Escherichia coli's...