Evidence map›Paper›PMID 27685108›Full record

ArticleJournal of applied clinical medical physics2016

Simultaneously integrated boost (SIB) spares OAR and reduces treatment time in locally advanced cervical cancer.

Christine H Feng, Yasmin Hasan, Malgorzata Kopec, Hania A Al-Hallaq

Abstract read
In one paragraph

Article in Journal of applied clinical medical physics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–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

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  14. The role of para-aortic nodal irradiation in cervical cancer.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology
    Review
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.

Christine H FengThe University of Chicago. 123@123.com.
Yasmin Hasan
Malgorzata Kopec
Hania A Al-Hallaq

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We performed a dosimetric comparison of sequential IMRT (sIMRT) and simul-taneously integrated boost (SIB) IMRT to boost PET-avid lymph nodes while concurrently treating pelvic targets to determine the potential of SIB IMRT to reduce overall treatment duration in locally advanced cervical cancer. Ten patients receiving definitive radiation therapy were identified retrospectively. RTOG consensus guidelines were followed to delineate the clinical target volume and organs at risk (OAR), which were then expanded per IMRT consortium guidelines to yield the planning target volume (PTV). Dosimetric parameters for PTVs and OAR including conformity (CI95%) were collected and compared using Wilcoxon signed-rank tests with Bonferroni correction. The median PTV volume was 1843 cc (1088-2225 cc) and the median boost volume was 43 cc (15-129 cc). Comparable target volume coverage was achieved with sIMRT and SIB plans, while hot spots were significantly reduced using SIB. SIB plans improved sparing for all OAR, though only rectum and small bowel doses were statistically significant. Comparing sIMRT and SIB plans averaged over all patients, rectal doses were V45: 70.8% vs. 64.5% (p = 0.002) and 0.1 cc: 50.7 Gy vs. 48.7 Gy (p = 0.006). For small bowel, sIMRT and SIB IMRT plans yielded V45: 13.4% vs. 11.4% (p = 0.006) and 1 cc: 54.4 Gy vs. 52.6 Gy (p = 0.006), respectively. Doses to femoral heads and blad-der trended towards significance in favor of SIB plans. The mean treatment time was 25 versus 29 days for SIB and sIMRT plans, respectively. When compared to sIMRT, SIB for treatment of nodal targets provides a significant, but small, dose reduction (3.8%-4.4%) to OAR, which leads to comparable biological dose despite higher fractional doses. Furthermore, SIB IMRT reduces overall treatment time and simplifies the planning process, and should be considered for targeting PET-positive nodal disease in patients with locally advanced cervical cancer.

Indexed as

Patient Care PlanningAdultAgedFemaleHumansLymph NodesMiddle AgedOrgans at RiskPelvisRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedRectumRetrospective StudiesUterine Cervical Neoplasms

Identifiers

PMID27685108
PMCPMC5874085

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.