Imaging dose and image quality of kilovoltage imaging implemented on a helical tomotherapy unit Article Swipe
E Ehler
,
Parham Alaei
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1016/j.zemedi.2024.12.003
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1016/j.zemedi.2024.12.003
The purpose of this work was to evaluate the imaging dose for the Accuray Radixact ClearRT system. Low-contrast resolution and CT number consistency was evaluated as well. CTDI measurements were compared to vendor supplied values, and similar measurements were done on a Varian TrueBeam kV cone-beam CT (CBCT) and a Philips Big Bore CT scanner. In-field imaging doses were measured using various protocols in an anthropomorphic phantom, while out-of-field doses were measured 10 cm from the imaging field edge. Comparison of the CTDI and the in-field doses showed considerable disagreement when the patient anatomy size was not congruent with the size of the CTDI phantom. While that is an expected outcome, this work provides an estimate of the differences for a variety of ClearRT protocols when this situation arises. The CNR was measured for all combinations of ClearRT settings for comparisons within the system, as well as for a comparison with a CBCT and fan-beam CT system. The CNR and dose information provided in this work can be used to aid in selecting a ClearRT imaging protocol. The CT number stability was tracked over 27 months; two instances where the CT number constancy exceeded tolerance were observed after service.
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- Language
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- https://doi.org/10.1016/j.zemedi.2024.12.003
- OA Status
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- References
- 20
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All OpenAlex metadata
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Imaging dose and image quality of kilovoltage imaging implemented on a helical tomotherapy unitWork title
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articleOpenAlex work type
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dePrimary language
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2025Year of publication
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2025-01-01Full publication date if available
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E Ehler, Parham AlaeiList of authors in order
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https://doi.org/10.1016/j.zemedi.2024.12.003Publisher landing page
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goldOpen access status per OpenAlex
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https://doi.org/10.1016/j.zemedi.2024.12.003Direct OA link when available
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Tomotherapy, Image quality, Medical physics, Nuclear medicine, Medicine, Image (mathematics), Computer science, Artificial intelligence, Radiology, Radiation therapyTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.supplied | 33 |
| abstract_inverted_index.cone-beam | 45 |
| abstract_inverted_index.congruent | 97 |
| abstract_inverted_index.constancy | 192 |
| abstract_inverted_index.evaluated | 24 |
| abstract_inverted_index.instances | 187 |
| abstract_inverted_index.protocol. | 176 |
| abstract_inverted_index.protocols | 62, 124 |
| abstract_inverted_index.selecting | 172 |
| abstract_inverted_index.situation | 127 |
| abstract_inverted_index.stability | 180 |
| abstract_inverted_index.tolerance | 194 |
| abstract_inverted_index.Comparison | 79 |
| abstract_inverted_index.comparison | 149 |
| abstract_inverted_index.resolution | 18 |
| abstract_inverted_index.comparisons | 140 |
| abstract_inverted_index.consistency | 22 |
| abstract_inverted_index.differences | 118 |
| abstract_inverted_index.information | 161 |
| abstract_inverted_index.Low-contrast | 17 |
| abstract_inverted_index.combinations | 135 |
| abstract_inverted_index.considerable | 88 |
| abstract_inverted_index.disagreement | 89 |
| abstract_inverted_index.measurements | 28, 37 |
| abstract_inverted_index.out-of-field | 68 |
| abstract_inverted_index.anthropomorphic | 65 |
| cited_by_percentile_year | |
| countries_distinct_count | 1 |
| institutions_distinct_count | 2 |
| sustainable_development_goals[0].id | https://metadata.un.org/sdg/7 |
| sustainable_development_goals[0].score | 0.699999988079071 |
| sustainable_development_goals[0].display_name | Affordable and clean energy |
| citation_normalized_percentile.value | 0.01946867 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |