Evidence map›Paper›PMID 33442835›Full record

ArticleMolecular imaging and biology2021

Differentiating Radiation Necrosis from Brain Tumor Using Hyperpolarized Carbon-13 MR Metabolic Imaging.

Ilwoo Park, Seulkee Kim, Daniela Pucciarelli, Juhyun Song, Jin Myung Choi, Kyung-Hwa Lee, Yun Hyeon Kim, Shin Jung, Woong Yoon, Jean L Nakamura

Abstract read
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In one paragraph

Article in Molecular imaging and biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 22% of its field
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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Enhanced Glioblastoma Detection ThroughMagnetic resonance in medicine · 2026
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  4. Auxiliary Value of [Cancers · 2025
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  5. Efficient Parahydrogen-InducedJournal of the American Chemical Society · 2024
    Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. 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

10 authors at 3 institutions in 2 countries.

Ilwoo Park *Department of Radiology, Chonnam National University, 42 Jaebongro, Donggu, Gwangju, 61469, South Korea. ipark@jnu.ac.kr.ORCID 0000-0001-6022-8363
Seulkee Kim *Department of Radiology, Chonnam National University, 42 Jaebongro, Donggu, Gwangju, 61469, South Korea.
Daniela PucciarelliDepartment of Radiation Oncology, University of California San Francisco, 505 Parnassus Ave, San Francisco, California, 94143, USA.
Juhyun SongDepartment of Anatomy, Chonnam National University Medical School, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do, Hwasun, 58128, South Korea.
Jin Myung ChoiNeurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do, Hwasun, 58128, South Korea.
Kyung-Hwa LeeDepartment of Pathology, Chonnam National University Medical School, 42 Jaebongro, Donggu, Gwangju, 61469, South Korea.
Yun Hyeon KimDepartment of Radiology, Chonnam National University, 42 Jaebongro, Donggu, Gwangju, 61469, South Korea.
Shin JungNeurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do, Hwasun, 58128, South Korea.
Woong YoonDepartment of Radiology, Chonnam National University, 42 Jaebongro, Donggu, Gwangju, 61469, South Korea.
Jean L NakamuraDepartment of Radiation Oncology, University of California San Francisco, 505 Parnassus Ave, San Francisco, California, 94143, USA.
Chonnam National University · KRChonnam National University Hwasun Hospital · KRUniversity of California, San Francisco · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDifferentiation between radiation-induced necrosis and tumor recurrence is crucial to determine proper management strategies but continues to be one of the central challenges in neuro-oncology. We hypothesized that hyperpolarized PROCEDURES: Radiation necrosis was initiated by employing a CT-guided 80-Gy single-dose irradiation of a half cerebrum in mice (n = 7). Intracerebral tumor was modeled with two orthotopic mouse models: GL261 glioma (n = 6) and Lewis lung carcinoma (LLC) metastasis (n = 7).

resultsConventional MRI exhibited typical radiographic features of radiation necrosis and brain tumor with large areas of contrast enhancement and T2 hyperintensity in all animals. Normalized lactate in radiation necrosis (0.10) was significantly lower than that in glioma (0.26, P = .004) and LLC metastatic tissue (0.25, P = .00007). Similarly, Lac/Pyr in radiation necrosis (0.18) was significantly lower than that in glioma (0.55, P = .00008) and LLC metastasis (0.46, P = .000008). These results were consistent with histological findings where tumor-bearing brains were highly cellular, while irradiated brains exhibited pathological markers consistent with reparative changes from radiation necrosis.

conclusionHyperpolarized

Indexed as

Carbon IsotopesAnimalsBrainBrain NeoplasmsCell Line, TumorDisease Models, AnimalMagnetic Resonance ImagingMiceNecrosisNeoplasm TransplantationRadiation InjuriesCarbon-13Carbon IsotopesBrain tumorHyperpolarized carbon-13Magnetic resonance imagingRadiation necrosis

Identifiers

PMID33442835
OpenAlexW3118878324

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.