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Multivariable normal tissue complication probability model-based treatment plan optimization for grade 2-4 dysphagia and tube feeding dependence in head and neck radiotherapy

Kierkels, Roel G J; Wopken, Kim; Visser, Ruurd; Korevaar, Erik W; van der Schaaf, Arjen; Bijl, Hendrik P; Langendijk, Johannes A

BACKGROUND AND PURPOSE: Radiotherapy of the head and neck is challenged by the relatively large number of organs-at-risk close to the tumor. Biologically-oriented objective functions (OF) could optimally distribute the dose among the organs-at-risk. We aimed to explore OFs based on multivariable normal …

2016-12AlgemeenArtikel

Diagnostic accuracy of PG-SGA SF, MUST and SNAQ in patients with head and neck cancer

Jager-Wittenaar, Harriët (Malnutrition And Healthy Ageing); Ottery, Faith D.; de Bats, Hester; Welink-Lamberts, Bertine; van der Laan, Bernard; Roodenburg, Jan

2016-09AlgemeenConferentiebijdrage

Does completing the PG-SGA Short Form improve patient awareness regarding malnutrition risk in patients with head and neck cancer?

Jager-Wittenaar, Harriët (Malnutrition And Healthy Ageing); Ottery, Faith D.; de Bats, Hester; Gort-van Dijk, Dorienke; van der Laan, Bernard; Roodenburg, Jan

2016-09AlgemeenConferentiebijdrage

Content validity across methods of malnutrition assessment in patients with cancer is limited

Sealy, Martine (Healthy Ageing, Allied Health Care And Nursing); Nijholt, Willemke; Stuiver, M.M.; van der Berg, M.M.; Roodenburg, Jan; Ottery, Faith D.; van der Schans, Cees (Healthy Ageing, Allied Health Care And Nursing); Jager, Harriët (Malnutrition And Healthy Ageing)

Objective To identify malnutrition assessment methods in cancer patients and assess their content validity based on internationally accepted definitions for malnutrition. Study Design and Setting Systematic review of studies in cancer patients that operationalized malnutrition as a variable, published …

2016-02-27AlgemeenArtikel

Effect of diagnosis with a chronic disease on physical activity behavior in middle-aged women

Dontje, Manon L.; Krijnen, Wim (Statistical Techniques For Applied Research); de Greef, Mathieu; Peeters, Geeske; Stolk, Ronald P.; van der Schans, Cees (Healthy Ageing, Allied Health Care And Nursing); Brown, Wendy

Objective Although regular physical activity is an effective secondary prevention strategy for patients with a chronic disease, it is unclear whether patients change their daily physical activity after being diagnosed. Therefore, the aims of this study were to (1) describe changes in levels of physical …

2016-02AlgemeenArtikel

The role of physical activity and nutritional intake on nutritional status in patients with head and neck cancer

Sealy, Martine (Healthy Ageing, Allied Health Care And Nursing)

Malnutrition is a frequent problem in patients with head and neck cancer. Prevention or timely treatment of malnutrition is of great importance because deteriorated nutritional status can have a negative effect on clinical outcome in head and neck cancer patients. Malnutrition is a multidimensional problem, …

2015-06AlgemeenConferentiebijdrage

Multicriteria optimization enables less experienced planners to efficiently produce high quality treatment plans in head and neck cancer radiotherapy

Kierkels, Roel G J; Visser, Ruurd; Bijl, Hendrik P; Langendijk, Johannes A; van 't Veld, Aart A; Steenbakkers, Roel J H M; Korevaar, Erik W

OBJECTIVES: To demonstrate that novice dosimetry planners efficiently create clinically acceptable IMRT plans for head and neck cancer (HNC) patients using a commercially available multicriteria optimization (MCO) system. METHODS: Twenty HNC patients were enrolled in this in-silico comparative planning …

2015-04-12AlgemeenArtikel

Patient-generated subjective global assessment

Ottery, Faith D.; Isenring, Elizabeth; Kasenic, Suzanne; DeBolt, Susan P.; Sealy, Martine (Healthy Ageing, Allied Health Care And Nursing); Jager-Wittenaar, Harriët (Malnutrition And Healthy Ageing)

Purpose: The Patient-Generated Subjective Global Assessment (PG-SGA), including the PG-SGA Short Form (SF, aka ‘abridged’), was originally developed in the mid 1990’s as a scored, patient self-report, paperbased instrument and has been widely validated. The PG-SGA (SF) has been used for screening, assessment …

2015AlgemeenConferentiebijdrage

Evaluation of DVH-based treatment plan verification in addition to gamma passing rates for head and neck IMRT

Visser, Ruurd; Wauben, David J.L.; de Groot, Martijn; Steenbakkers, Roel J.H.M.; Godart, Jeremy; van 't Veld, Aart A.; Langendijk, Johannes A.; Korevaar, Erik W.; Bijl, Hendrik P

Background and purpose: Treatment plan verification of intensity modulated radiotherapy (IMRT) is generally performed with the gamma index (GI) evaluation method, which is difficult to extrapolate to clinical implications. Incorporating Dose Volume Histogram (DVH) information can compensate for this. …

2014-09-01AlgemeenArtikel

Content validity of methods to assess malnutrition in cancer patients: a systematic review

Sealy, Martine (Healthy Ageing, Allied Health Care And Nursing); Nijholt, Willemke; Stuiver, M.M.; van der Berg, M.M.; Ottery, Faith D.; van der Schans, Cees (Healthy Ageing, Allied Health Care And Nursing); Roodenburg, Jan L N; Jager-Wittenaar, Harriët (Malnutrition And Healthy Ageing)

Rationale: Inadequate operationalisation of the multidimensial concept of malnutrition may result in inadequate evaluation of nutritional status. In this review we aimed to assess content validity of methods used to assess malnutrition in cancer patients, according to domains directly derived from European …

2014-09AlgemeenConferentiebijdrage

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