Hemorrhage on DWI (mnemonic)

Last revised by COIMBATORE NARAYANAN on 24 Mar 2021

Citation, DOI, disclosures and article data

Citation:

Hapugoda S, NARAYANAN C, Hemorrhage on DWI (mnemonic). Reference article, Radiopaedia.org (Accessed on 25 Apr 2024) https://doi.org/10.53347/rID-87751

DOI:

https://doi.org/10.53347/rID-87751

Permalink:

https://radiopaedia.org/articles/87751

rID:

87751

Article created:

13 Mar 2021, Sachi Hapugoda

Disclosures:

At the time the article was created Sachi Hapugoda had no recorded disclosures.

View Sachi Hapugoda's current disclosures

Last revised:

24 Mar 2021, COIMBATORE NARAYANAN

Disclosures:

At the time the article was last revised COIMBATORE NARAYANAN had no recorded disclosures.

View COIMBATORE NARAYANAN's current disclosures

Revisions:

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

Systems:

Central Nervous System

Sections:

Mnemonics

General isotropic DWI signal characteristics of hemorrhage on MRI may be recalled by the mnemonic:

Hobbits Love Little Hairy Ladies

Mnemonic

Hobbits
- high isotropic DWI signal with reduced ADC values
- intracellular oxyhemoglobin: hyperacute (<1day)
Love
- low isotropic DWI signal with reduced ADC values
- intracellular deoxyhemoglobin: acute (1 to 3 days)
Little
- low isotropic DWI signal with reduced ADC values
- intracellular methemoglobin: early subacute (3 to 7 days)
Hairy
- high isotropic DWI signal with reduced ADC values
- extracellular methemoglobin: late subacute (7 to 14-28 days)
Ladies
- low isotropic DWI signal with increased ADC values (centrally)
- extracellular haemichromes at the central portion of the infarct: chronic (>14-28 days)