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Record W1947387202

Calibración de polvo TLD-100 para energías de 60Co, 137Cs, 192Ir y RX de 250, 50 k Vp en dosis absorbida en agua con fines de control de calidad dosimétrico para braquiterapia de alta tasa de dosis

2006· article· es· W1947387202 on OpenAlexaboutno aff
Sharon Peñuela Calderón, José Trinidad Álvarez Romero

Bibliographic record

VenueRevista Mexicana de Física · 2006
Typearticle
Languagees
FieldPhysics and Astronomy
TopicRadioactive Decay and Measurement Techniques
Canadian institutionsnot available
Fundersnot available
KeywordsHumanitiesPhysicsKermaThermoluminescent dosimeterNuclear medicineArtDosimetryMedicineDosimeterOptics
DOInot available

Abstract

fetched live from OpenAlex

Para ayudar a la solucion de los problemas de trazabilidad y control de calidad dosimetrico a usuarios de fuentes de 192 Ir en la Republica Mexicana, el Laboratorio Secundario de Calibracion Dosimetrica (LSCD) del ININ calibra un lote de polvo TLD-100 (LiF:Mg,Ti) en terminos de dosis absorbida en agua D W para las siguientes fuentes de radiacion: 60 Co, 137 Cs y RX de 250 y 50 KVp. Posteriormente, se hace una interpolacion para la calibracion del 192 Ir. La calibracion de los campos de radiacion se hace con los siguientes protocolos: 60 Co, protocolo OIEA-TRS 398 empleando una camara patron secundario PTW N30013 calibrada en D w por el NRC (Canada); 137 Cs, protocolo AAPM TG43, en terminos de la intensidad de kerma S k ; determinado mediante el kerma en aire K a , el cual es medido con una camara de ionizacion tipo dedal patron secundario NE2611 trazable al NIST (USA); RX de 250 y 50 KVp, protocolo AAPM TG 61 usando una camara Farmer patron terciario PTW 30001 con trazabilidad al LCIE (Francia) en terminos de K a. Las curvas de calibracion se construyen para la respuesta del TLD RTLD vs D w , ajustandolas por minimos cuadrados pesados mediante un polinomio de segundo grado que considera la supralinealidad de la respuesta. Las curvas se validan por falta de ajuste y por la prueba de normalidad Anderson Darling. Posteriormente, se interpolan los factores de sensibilidad (F S ) para las fuentes de 192 Ir: MicroSelectron y VariSource. Se envia un par de capsulas a dos hospitales para verificar una D w nominal de 2 Gy. En un caso se obtuvo una subestimacion en la D w y en otro una sobreestimacion. Finalmente, se evalua la incertidumbre expandida asociada a la D w y a los F s .

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.004
Threshold uncertainty score0.010

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.001
Scholarly communication0.0010.000
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0030.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.011
GPT teacher head0.277
Teacher spread0.266 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

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Citations0
Published2006
Admission routes1
Has abstractyes

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Same venueRevista Mexicana de FísicaSame topicRadioactive Decay and Measurement TechniquesFrench-language works237,207