Development of an Optical Image based Guidance System for Head and Neck Cancer Patients by Detecting External Markers behind a Full Facemask

2011 ◽  
Vol 81 (2) ◽  
pp. S769
Author(s):  
H. Kim ◽  
Y. Park ◽  
K. Lee ◽  
I. Kim ◽  
S. Ye
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Cancer Patients ◽  
Neck Cancer ◽  
Optical Image ◽  
Guidance System

scholarly journals Retrospective analysis of random and systematic errors in radiation therapy of head and neck cancer patients and its clinical predictive implications with VMAT treatment

2019 ◽  
Vol 7 (7) ◽  
pp. 2758
Author(s):  
Jui Deb ◽  
Santanu Chaudhuri ◽  
Debashis Panda ◽  
Sujit Nath Sinha ◽  
Sasi Kumar ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Cancer Patients ◽  
Neck Cancer ◽  
Systematic Errors ◽  
Guidance System ◽  
Reference Image ◽  
Cbct Image ◽  
The Mean ◽  
Immobilization Techniques

Background: The accuracy of radiotherapy is based on the matching of 2D portal/CBCT image with a reference image. The aim of this study is to determine the random and systematic setup errors (in cm) in radiotherapy of head and neck cancer patients and to derive the setup margin and its clinical implications.Methods: Author retrospectively reviewed the records of 25 head and neck cancer (HNC) patients treated with radiotherapy between Dec 2017 and July 2018. After immobilization, setup accuracy was assessed by registration of XVI image with planning reference image using Elekta XVI image guidance system and the isocenter correction was applied. For each patient 10 CBCT image sets were taken. The translational errors in X, Y and Z directions were used to estimate systematic (Σ) and random (σ) errors and to derive the final setup margin by using van Herk’s formula (2.5Σ + 0.7σ).Results: The mean translational errors ranges from -0.23 cm to 0.32 cm in Lateral (X), -0.15 to 0.16 cm in Longitudinal (Y) and -0.11 to 0.17 cm in vertical (Z) directions. The Mean and SD for systematic errors 0.21±0.13, 0.11±0.18, 0.14±0.11 and random error (in cm) are -0.03±0.33, 0.00±0.21 and 0.05±0.30 in X, Y and Z axis respectively. The final total margin for CTV to PTV including setup margin in the X, Y and Z directions (in cm) were 0.56, 0.61, and 0.47 respectively.Conclusion: Thus, the precise immobilization techniques are very important to reduce the setup margins, and the number of CBCTs during head and neck radiotherapy treatment.

Acute and Chronic Depressive Disorders in Head and Neck Cancer Patients

2020 ◽  
pp. 27-33
Author(s):  
Leonid Bardenshtein ◽  
Valeriy Leontiev ◽  
Aleksey Drobyshev ◽  
Aleksandr Tsimbalistov ◽  
Nikolay Malginov ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Cancer Patients ◽  
Neck Cancer ◽  
Depressive Disorders ◽  
Clinical Symptoms ◽  
Depression Prevalence ◽  
Patient Category ◽  
Antipsychotic Drug Treatment ◽  
Timely Administration

The review focuses on depressive disorders in cancer patients. The article summarizes the findings of domestic and foreign studies on depression prevalence, clinical symptoms and treatment in head and neck cancer patients. Early detection of affective disorder and timely administration of antipsychotic drug treatment is shown to be important for this patient category.

NUTRITION ASSESSMENT IN HEAD AND NECK CANCER PATIENTS PRE and POST CHEMORADIOTHERAPY.

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Piyush Kumar ◽  
Bhavya P Pateneedi ◽  
Dharam P Singh ◽  
Arvind K Chauhan
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Cancer Patients ◽  
Neck Cancer ◽  
Nutritional Risk ◽  
Total Leukocyte Count ◽  
Risk Indicator ◽  
Anthropometric Parameters ◽  
Skin Fold Thickness ◽  
Before And After

INTRODUCTION: Head and neck cancer patients are frequently malnourished at the time of diagnosis and prior to the beginning of treatment. Deterioration of the nutritional status results in an increase in chemo radiotherapy related toxicity and this may increase the prolonged treatment time, which has been associated with poor clinical outcome. The present study aims to do nutritional assessment before and after chemo radiotherapy in head and neck cancer patients. MATERIAL AND METHODS: The present study was undertaken at the Department of Radiation Oncology, Shri Ram Murti Smarak Institute of Medical Sciences, Bareilly. In this study, 50 patients of Head and neck tumours were enrolled and their nutrition was assessed before and after chemoradiotherapy. Nutrition assessment was done using different laboratory parameters like haemoglobin, total leukocyte count, blood urea, serum creatinine and serum bilirubin. Anthropometric parameters used are Body mass index, Skin fold thickness, and Mid-arm circumference. Nutritional risk indicator and PG-SGA score is measured before and after chemoradiotherapy. All the parameters were assessed and analysed using different statistical tests- Chi-square test, Fisher Exact test and paired t test.RESULTS: Haemoglobin decrease was statistically significant during treatment (p less than 0.001) and the decrease in total leukocyte count during treatment was showing trend towards significance (p value-0.056). There was deterioration in other parameters like blood urea, serum creatinine and serum bilirubin but was not statistically significant. Anthropometric parameters- Body mass index, mid-arm circumference and skin fold thickness and percent body fat showed a significant change (p less than 0.00001). Nutritional risk indicator and PG-SGA class has decreased for majority of patients during treatment, the change is statistically significant (p less than 0.00001 and p=0.0251) respectively.CONCLUSION: The nutrition has important role to play in the management of head and neck cancers by chemo radiotherapy. It helps to reduce the complications and improve the tolerance of chemo radiotherapy, thus avoiding treatment breaks which may lead to failure of treatment.

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