Evidence map›Paper›PMID 28849546›Full record

ArticleMedical & biological engineering & computing2018

A new Monte Carlo code for light transport in biological tissue.

Eugenio Torres-García, Rigoberto Oros-Pantoja, Liliana Aranda-Lara, Patricia Vieyra-Reyes

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Article in Medical & biological engineering & computing, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Eugenio Torres-GarcíaFacultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan s/n esquina Jesús Carranza, Col. Moderna de la Cruz, CP. 50180, Toluca, Estado de Mexico, Mexico. eugenio_tg@yahoo.com.mx.
Rigoberto Oros-PantojaFacultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan s/n esquina Jesús Carranza, Col. Moderna de la Cruz, CP. 50180, Toluca, Estado de Mexico, Mexico.
Liliana Aranda-LaraFacultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan s/n esquina Jesús Carranza, Col. Moderna de la Cruz, CP. 50180, Toluca, Estado de Mexico, Mexico.
Patricia Vieyra-ReyesFacultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan s/n esquina Jesús Carranza, Col. Moderna de la Cruz, CP. 50180, Toluca, Estado de Mexico, Mexico.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this work was to develop an event-by-event Monte Carlo code for light transport (called MCLTmx) to identify and quantify ballistic, diffuse, and absorbed photons, as well as their interaction coordinates inside the biological tissue. The mean free path length was computed between two interactions for scattering or absorption processes, and if necessary scatter angles were calculated, until the photon disappeared or went out of region of interest. A three-layer array (air-tissue-air) was used, forming a semi-infinite sandwich. The light source was placed at (0,0,0), emitting towards (0,0,1). The input data were: refractive indices, target thickness (0.02, 0.05, 0.1, 0.5, and 1 cm), number of particle histories, and λ from which the code calculated: anisotropy, scattering, and absorption coefficients. Validation presents differences less than 0.1% compared with that reported in the literature. The MCLTmx code discriminates between ballistic and diffuse photons, and inside of biological tissue, it calculates: specular reflection, diffuse reflection, ballistics transmission, diffuse transmission and absorption, and all parameters dependent on wavelength and thickness. The MCLTmx code can be useful for light transport inside any medium by changing the parameters that describe the new medium: anisotropy, dispersion and attenuation coefficients, and refractive indices for specific wavelength.

Indexed as

Monte Carlo MethodDiagnostic ImagingHumansImage Processing, Computer-AssistedModels, TheoreticalPhotonsRefractometryBallistic photonsDiffuse photonsLight transportTissue interactionTissue optical properties

Identifiers

PMID28849546

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.