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técnica de menor penetración

English translation: reduced/lesser penetration

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Spanish term or phrase:menor penetración
English translation:reduced/lesser penetration
Entered by: Paul Weideman
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22:00 Jan 22, 2004
Spanish to English translations [PRO]
Medical
Spanish term or phrase: técnica de menor penetración
Referring to a chest x-ray: "se efectúa nueva radiografía con técnica de menor penetración"

Is there a standard phrase to be used here?
Paul Weideman
Local time: 12:09
reduced / lesser penetration
Explanation:
It refers to beam penetration, the intensity of radiation delivered by the X-ray machine to obtain an X-ray. With reduced penetration is easier to see soft tissues, while the inverse applies to bone.

Below is one example in the context of X-rays (CT) and another one in the context of radiotherapy.

Good luck
Elena


Tissue densities were inferred from patient CT data on a voxel-by-voxel basis, and calculations were performed with and without tissue compensators. A dose calculation module using the new algorithm was written, and treatment plans using the new algorithm were compared to plans using standard ray-tracing techniques for 10 patients with clival chordoma and three patients with nasopharyngeal carcinoma who were treated with helium lons at Lawrence Berkeley National Laboratory (LBL). RESULTS: Pencil beam calculations agreed well with Monte Carlo calculations in the patient geometries. The pencil-beam algorithm predicted several multiple-scattering effects that are not modeled by conventional ray-tracing calculations. These include (a) the widening of the penumbra as a function of beam **penetration**, (b) the degradation in the sharpness of the dose gradient at the end of the particle range in highly heterogeneous regions....


The 6 MeV high dose rate total skin electron irradiation mode on a linear accelerator was used. Beam profiles and percentage depth doses in the patient plane for single, dual, and six dual beams were measured for different dual beam angulations and acrylic scatterer-degraders of different thicknesses mounted on the treatment head or in front of the patient in the treatment plane. RESULTS: It is demonstrated that, with the same electron nominal energy, total skin irradiation techniques with different beam penetrations can be obtained by inserting various beam scatterer-degraders into the beam, either mounted on the accelerator head or close to the patient. For our patient treatment, a beam **penetration** was selected so that the 80% dose lay at 8-9 mm and the 50% dose at 15-16 mm depth...
Selected response from:

xxxElena Sgarbo
Grading comment
Thank you, Elena
4 KudoZ points were awarded for this answer

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Summary of answers provided
5 +2reduced / lesser penetrationxxxElena Sgarbo


  

Answers


3 hrs   confidence: Answerer confidence 5/5 peer agreement (net): +2
reduced / lesser penetration


Explanation:
It refers to beam penetration, the intensity of radiation delivered by the X-ray machine to obtain an X-ray. With reduced penetration is easier to see soft tissues, while the inverse applies to bone.

Below is one example in the context of X-rays (CT) and another one in the context of radiotherapy.

Good luck
Elena


Tissue densities were inferred from patient CT data on a voxel-by-voxel basis, and calculations were performed with and without tissue compensators. A dose calculation module using the new algorithm was written, and treatment plans using the new algorithm were compared to plans using standard ray-tracing techniques for 10 patients with clival chordoma and three patients with nasopharyngeal carcinoma who were treated with helium lons at Lawrence Berkeley National Laboratory (LBL). RESULTS: Pencil beam calculations agreed well with Monte Carlo calculations in the patient geometries. The pencil-beam algorithm predicted several multiple-scattering effects that are not modeled by conventional ray-tracing calculations. These include (a) the widening of the penumbra as a function of beam **penetration**, (b) the degradation in the sharpness of the dose gradient at the end of the particle range in highly heterogeneous regions....


The 6 MeV high dose rate total skin electron irradiation mode on a linear accelerator was used. Beam profiles and percentage depth doses in the patient plane for single, dual, and six dual beams were measured for different dual beam angulations and acrylic scatterer-degraders of different thicknesses mounted on the treatment head or in front of the patient in the treatment plane. RESULTS: It is demonstrated that, with the same electron nominal energy, total skin irradiation techniques with different beam penetrations can be obtained by inserting various beam scatterer-degraders into the beam, either mounted on the accelerator head or close to the patient. For our patient treatment, a beam **penetration** was selected so that the 80% dose lay at 8-9 mm and the 50% dose at 15-16 mm depth...


    Reference: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&d...
xxxElena Sgarbo
Native speaker of: Native in SpanishSpanish
PRO pts in pair: 3539
Grading comment
Thank you, Elena

Peer comments on this answer (and responses from the answerer)
agree  Gerard Michael Burns
1 hr
  -> Gracias Gerard

agree  Jason Willis-Lee
10 hrs
  -> Gracias Jason
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