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Smolders A, Choulilitsa E, Czerska K, Bizzocchi N, Krcek R, Lomax A, Weber DC, Albertini F. Dosimetric comparison of autocontouring techniques for online adaptive proton therapy. Phys Med Biol 2023; 68:175006. [PMID: 37385266 DOI: 10.1088/1361-6560/ace307] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/29/2023] [Indexed: 07/01/2023]
Abstract
Objective.Anatomical and daily set-up uncertainties impede high precision delivery of proton therapy. With online adaptation, the daily plan is reoptimized on an image taken shortly before the treatment, reducing these uncertainties and, hence, allowing a more accurate delivery. This reoptimization requires target and organs-at-risk (OAR) contours on the daily image, which need to be delineated automatically since manual contouring is too slow. Whereas multiple methods for autocontouring exist, none of them are fully accurate, which affects the daily dose. This work aims to quantify the magnitude of this dosimetric effect for four contouring techniques.Approach.Plans reoptimized on automatic contours are compared with plans reoptimized on manual contours. The methods include rigid and deformable registration (DIR), deep-learning based segmentation and patient-specific segmentation.Main results.It was found that independently of the contouring method, the dosimetric influence of usingautomaticOARcontoursis small (<5% prescribed dose in most cases), with DIR yielding the best results. Contrarily, the dosimetric effect of using theautomatic target contourwas larger (>5% prescribed dose in most cases), indicating that manual verification of that contour remains necessary. However, when compared to non-adaptive therapy, the dose differences caused by automatically contouring the target were small and target coverage was improved, especially for DIR.Significance.The results show that manual adjustment of OARs is rarely necessary and that several autocontouring techniques are directly usable. Contrarily, manual adjustment of the target is important. This allows prioritizing tasks during time-critical online adaptive proton therapy and therefore supports its further clinical implementation.
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Affiliation(s)
- A Smolders
- Paul Scherrer Institute, Center for Proton Therapy, Switzerland
- Department of Physics, ETH Zurich, Switzerland
| | - E Choulilitsa
- Paul Scherrer Institute, Center for Proton Therapy, Switzerland
- Department of Physics, ETH Zurich, Switzerland
| | - K Czerska
- Paul Scherrer Institute, Center for Proton Therapy, Switzerland
| | - N Bizzocchi
- Paul Scherrer Institute, Center for Proton Therapy, Switzerland
| | - R Krcek
- Paul Scherrer Institute, Center for Proton Therapy, Switzerland
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - A Lomax
- Paul Scherrer Institute, Center for Proton Therapy, Switzerland
- Department of Physics, ETH Zurich, Switzerland
| | - D C Weber
- Paul Scherrer Institute, Center for Proton Therapy, Switzerland
- Department of Radiation Oncology, University Hospital Zurich, Switzerland
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - F Albertini
- Paul Scherrer Institute, Center for Proton Therapy, Switzerland
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Surma K, Czerska K, Sobczyńska-Tomaszewska A, Wójtowicz P, Kupiec J. P002 Genetic characteristics of the cystic fibrosis Polish patients registered in the public Matio Polish Cystic Fibrosis Foundation. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01029-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Winczura P, Czerska K, Wejs-Maternik J, Blukis A, Mężykowski R, Olko P, Kopeć R, Badzio A. PO-1472: Cardiac dose reduction in proton vs. photon DIBH breast and regional lymph nodes radiotherapy. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01490-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Szczałuba K, Szymańska K, Rydzanicz M, Ciara E, Walczak A, Piekutowska-Abramczuk D, Kosińska J, Jacoszek A, Czerska K, Biernacka A, Laure-Kamionowska M, Gasperowicz P, Pronicka E, Płoski R. A de novo
loss-of-function DYNC1H1
mutation in a patient with parkinsonian features and a favourable response to levodopa. Clin Genet 2017; 93:1107-1108. [DOI: 10.1111/cge.13133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/02/2017] [Accepted: 09/04/2017] [Indexed: 11/27/2022]
Affiliation(s)
- K. Szczałuba
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | - K. Szymańska
- Department of Child Psychiatry; Medical University of Warsaw; Warsaw Poland
| | - M. Rydzanicz
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | - E. Ciara
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
| | - A. Walczak
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | | | - J. Kosińska
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | - A. Jacoszek
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | | | - A. Biernacka
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | - M. Laure-Kamionowska
- Department of Experimental and Clinical Neuropathology; Mossakowski Medical Research Center, Polish Academy of Sciences; Warsaw Poland
| | - P. Gasperowicz
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | - E. Pronicka
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
| | - R. Płoski
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
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Sobczynska-Tomaszewska A, Czerska K, Ołtarzewski M, Wertheim-Tysarowska K, Bal J. 19 Newborn screening for cystic fibrosis – Polish experience with CFTR sequencing strategy. J Cyst Fibros 2014. [DOI: 10.1016/s1569-1993(14)60156-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sobczynska-Tomaszewska A, Czerska K, Szpecht-Potocka A, Popielarz D, Wertheim-Tysarowska K, Niepokój K, Oralewska B, Bal J. 2 The syndrome of exocrine pancreatic insufficiency – cystic fibrosis or other disease? J Cyst Fibros 2012. [DOI: 10.1016/s1569-1993(12)60171-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Norek A, Jurek M, Nowakowska A, Sands D, Trawinska-Bartnicka M, Susek A, Czerska K, Bal J. 17 Does the CFTR/ENaC genotype predispose to cystic fibrosis? J Cyst Fibros 2011. [DOI: 10.1016/s1569-1993(11)60039-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Czerska K, Sobczynska-Tomaszewska A, Sands D, Nowakowska A, Bak D, Wertheim K, Poznanski J, Zielenski J, Norek A, Bal J. Prostaglandin-endoperoxide synthase genes COX1 and COX2 - novel modifiers of disease severity in cystic fibrosis patients. J Appl Genet 2011; 51:323-30. [PMID: 20720307 DOI: 10.1007/bf03208862] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Cystic fibrosis (CF) is one of the most common autosomal recessive diseases among Caucasians caused by a mutation in the CFTR gene. However, the clinical outcome of CF pulmonary disease varies remarkably even in patients with the same CFTR genotype. This has led to a search for genetic modifiers located outside the CFTR gene. The aim of this study was to evaluate the effect of functional variants in prostaglandin-endoperoxide synthase genes (COX1 and COX2) on the severity of lung disease in CF patients. To the best of our knowledge, it is the first time when analysis of COX1 and COX2 as potential CF modifiers is provided. The study included 94 CF patients homozygous for F508del mutation of CFTR. To compare their clinical condition, several parameters were recorded, e.g. a unique clinical score: disease severity status (DSS). To analyse the effect of non-CFTR genetic polymorphisms on the clinical course of CF patients, the whole coding region of COX1 and selected COX2 polymorphisms were analysed. Statistical analysis of genotype-phenotype associations revealed a relationship between the heterozygosity status of identified polymorphisms and better lung function. These results mainly concern COX2 polymorphisms: -765G>C and 8473T>C. The COX1 and COX2 polymorphisms reducing COX protein levels had a positive effect on all analysed clinical parameters. This suggests an important role of these genes as protective modifiers of pulmonary disease in CF patients, due to inhibition of arachidonic acid conversion into prostaglandins, which probably reduces the inflammatory process.
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Affiliation(s)
- K Czerska
- Institute of Mother and Child, Department of Medical Genetics, Kasprzaka 17a, 01-211 Warsaw, Poland.
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Norek A, Stremska M, Sobczynska-Tomaszewska A, Milewski M, Dmenska H, Sands D, Jurek M, Czerska K, Wertheim-Tysarowska K, Bal J. A novel de novo CFTR mutation in a Polish CF patient. J Cyst Fibros 2010. [DOI: 10.1016/s1569-1993(10)60012-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Norek A, Sobczynska-Tomaszewska A, Oltarzewski M, Wertheim K, Czerska K, Sands D, Zybert K, Bal J. Genetic aspect of two-year experience in cystic fibrosis newborn screening program in Poland. J Cyst Fibros 2009. [DOI: 10.1016/s1569-1993(09)60060-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sobczynska-Tomaszewska A, Oltarzewski M, Wertheim K, Norek A, Czerska K, Sands D, Zybert K, Bal J. CFTR gene mutations in IRT/DNA cystic fibrosis newborn screening in Poland. J Cyst Fibros 2008. [DOI: 10.1016/s1569-1993(08)60035-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
Mutation in the MAF1 gene was identified in a screen for decreased efficiency of tRNA suppressor SUP11 in the yeast Saccharomyces cerevisiae (Sc). maf1-1 mutation exerts a dual phenotypic effect: antisuppression and temperature sensitive (ts) respiratory growth. MAF1, cloned by complementation of the ts phenotype of maf1-1, also alleviates the antisuppressor effect. The coding sequence of MAF1 is interrupted by an intron of 80 bp. The putative gene product, Maf1p, is a hydrophilic protein of 395 amino acids (aa) not showing significant similarity to known proteins which indicates that MAF1 encodes a novel protein. Maf1p may play a role in the tRNA biosynthetic pathway since a fragment of the RPO31/RPC160 gene encoding the largest subunit of RNA polymerase III was cloned as a multicopy suppressor of mafl-1.
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Affiliation(s)
- M Boguta
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland.
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