Herder risk model

Last revised by Henry Knipe on 28 May 2020

Citation, DOI, disclosures and article data

Citation:

Little D, Knipe H, Herder risk model. Reference article, Radiopaedia.org (Accessed on 19 Apr 2024) https://doi.org/10.53347/rID-78064

DOI:

https://doi.org/10.53347/rID-78064

Permalink:

https://radiopaedia.org/articles/78064

rID:

78064

Article created:

27 May 2020, David Little ◉

Disclosures:

At the time the article was created David Little had no recorded disclosures.

View David Little's current disclosures

Last revised:

28 May 2020, Henry Knipe ◉ ◈

Disclosures:

At the time the article was last revised Henry Knipe had no recorded disclosures.

View Henry Knipe's current disclosures

Revisions:

3 times, by 2 contributors - see full revision history and disclosures

Systems:

Chest

Sections:

Classifications

Tags:

pet-ct, pulmonary nodule, refs, cases

Synonyms:

Herder risk model (pulmonary nodule)

British Thoracic Society (BTS) guidelines for pulmonary nodules¹ recommend the application of the Herder risk model in predicting malignancy in pulmonary nodules.

The Herder model ² predicts the risk of malignancy in solid pulmonary nodules using patient characteristics, nodules characteristics, and the degree of FDG uptake on PET-CT.

Using the Herder model, pulmonary nodule FDG uptake is classified into four categories. Herder et al did not suggest specific objective values for each level, however, other studies have ^ref. The BTS recommend using the following scale:

no uptake: uptake indiscernible from background lung tissue
faint uptake: uptake less than or equal to mediastinal blood pool
moderate uptake: uptake greater than mediastinal blood pool
intense uptake: uptake markedly greater than mediastinal blood pool (not strictly defined but 3x mediastinal blood pool would be considered intense)