Cited by 3,777Medical Imaging Techniques and ApplicationsRadiomics and Machine Learning in Medical ImagingLung Cancer Diagnosis and Treatment

The DOI matches its Crossref record; 132 of the 157 references it cites were found in a registry or an index.

From RECIST to PERCIST: Evolving Considerations for PET Response Criteria in Solid Tumors

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Abstract

UNLABELLED: The purpose of this article is to review the status and limitations of anatomic tumor response metrics including the World Health Organization (WHO) criteria, the Response Evaluation Criteria in Solid Tumors (RECIST), and RECIST 1.1. This article also reviews qualitative and quantitative approaches to metabolic tumor response assessment with (18)F-FDG PET and proposes a draft framework for PET Response Criteria in Solid Tumors (PERCIST), version 1.0. METHODS: PubMed searches, including searches for the terms RECIST, positron, WHO, FDG, cancer (including specific types), treatment response, region of interest, and derivative references, were performed. Abstracts and articles judged most relevant to the goals of this report were reviewed with emphasis on limitations and strengths of the anatomic and PET approaches to treatment response assessment. On the basis of these data and the authors' experience, draft criteria were formulated for PET tumor response to treatment. RESULTS: Approximately 3,000 potentially relevant references were screened. Anatomic imaging alone using standard WHO, RECIST, and RECIST 1.1 criteria is widely applied but still has limitations in response assessments. For example, despite effective treatment, changes in tumor size can be minimal in tumors such as lymphomas, sarcoma, hepatomas, mesothelioma, and gastrointestinal stromal tumor. CT tumor density, contrast enhancement, or MRI characteristics appear more informative than size but are not yet routinely applied. RECIST criteria may show progression of tumor more slowly than WHO criteria. RECIST 1.1 criteria (assessing a maximum of 5 tumor foci, vs. 10 in RECIST) result in a higher complete response rate than the original RECIST criteria, at least in lymph nodes. Variability appears greater in assessing progression than in assessing response. Qualitative and quantitative approaches to (18)F-FDG PET response assessment have been applied and require a consistent PET methodology to allow quantitative assessments. Statistically significant changes in tumor standardized uptake value (SUV) occur in careful test-retest studies of high-SUV tumors, with a change of 20% in SUV of a region 1 cm or larger in diameter; however, medically relevant beneficial changes are often associated with a 30% or greater decline. The more extensive the therapy, the greater the decline in SUV with most effective treatments. Important components of the proposed PERCIST criteria include assessing normal reference tissue values in a 3-cm-diameter region of interest in the liver, using a consistent PET protocol, using a fixed small region of interest about 1 cm(3) in volume (1.2-cm diameter) in the most active region of metabolically active tumors to minimize statistical variability, assessing tumor size, treating SUV lean measurements in the 1 (up to 5 optional) most metabolically active tumor focus as a continuous variable, requiring a 30% decline in SUV for "response," and deferring to RECIST 1.1 in cases that do not have (18)F-FDG avidity or are technically unsuitable. Criteria to define progression of tumor-absent new lesions are uncertain but are proposed. CONCLUSION: Anatomic imaging alone using standard WHO, RECIST, and RECIST 1.1 criteria have limitations, particularly in assessing the activity of newer cancer therapies that stabilize disease, whereas (18)F-FDG PET appears particularly valuable in such cases. The proposed PERCIST 1.0 criteria should serve as a starting point for use in clinical trials and in structured quantitative clinical reporting. Undoubtedly, subsequent revisions and enhancements will be required as validation studies are undertaken in varying diseases and treatments.

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Metadata

Authors
Wahl, R. L., Jacene, H., Kasamon, Y., & Lodge, M. A.
Affiliations
Johns Hopkins University (US)
Corresponding author
Wahl, Richard L.
Venue
Journal of Nuclear Medicine
Published
2009-04-29
Volume
50
Issue
Suppl 1
Pages
122S-150S
ISSN
  • 0161-5505 (ISSN-L)
  • 2159-662X
OpenAlex
W2155263737
Cited by
3,777
References
157
Citations by year
2026: 180 · 2025: 200 · 2024: 197 · 2023: 230 · 2022: 248 · 2021: 309 · 2020: 271 · 2019: 259 · 2018: 225 · 2017: 274 · 2016: 246 · 2015: 245 · 2014: 221 · 2013: 230 · 2012: 192
FWCI
21.01
Type
journal article
Language
en
Open access
Locations
  • Journal of Nuclear Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (CA006973, P30CA006973)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiomics and Machine Learning in Medical Imaging
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Diagnosis and Treatment
Keywords
RECIST, PERCIST, 18F-FDG PET, tumor response assessment, standardized uptake value, WHO criteria, RECIST 1.1, region of interest, treatment response assessment, solid tumors, lymphoma, sarcoma, hepatocellular carcinoma, mesothelioma, gastrointestinal stromal tumor, test-retest variability
MeSH terms
Forecasting, Humans, Neoplasms, Prognosis, World Health Organization, Treatment Outcome, Outcome Assessment, Health Care, Practice Guidelines as Topic, Radiopharmaceuticals, Fluorodeoxyglucose F18, Internationality, Positron-Emission Tomography

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