Keywords:
Obstruction / Occlusion, Perception image, Education, Ultrasound-Spectral Doppler, MR-Angiography, MR, Vascular, Musculoskeletal system, Musculoskeletal soft tissue
Authors:
R. Leao, L. C. Zattar-Ramos, E. L. Bizetto, M. B. Rodrigues, D. T. Amaral, R. Y. Fernandes, C. O. Kurimori, P. V. P. Helito, M. F. Correa, C. F. A. Cavalcanti; Sao Paulo/BR
DOI:
10.1594/essr2016/P-0116
Imaging findings OR Procedure Details
PROCEDURE DETAILS
The imaging studies of patients with venous thrombosis first diagnosed on the basis of MRI findings were reviewed.
• All the selected patients had an initial clinical suspicion in the scope of musculoskeletal injuries,
and deep venous thrombosis was unsuspected on clinical grounds.
• The clinical hypothesis before the MRI examination were plenty: gastrocnemius strain,
morton’s neuroma,
plantar fasciitis,
tendinopathy etc,
which explains the choice for a MRI over ultrasound as the first diagnostic modality.
IMAGING FINDINGS
The main findings of venous thrombosis on MRI are:
1.
Filling defect in post-contrast sequences,
with or without surrounding enhancement and edema
2.
An increased vessel caliber,
often showing a tubular structure and perivenous reactive edema.
3.
A heterogeneous content with low signal in T1 and T2 MRI weighted images may be present.
It is known that reactive inflammatory changes may predominate,
contributing to alternative incorrect diagnoses.
On ultrasound evaluation,
an absence of blood flow on color or spectral Doppler,
an echogenic content within the vein and a non-compressible intramuscular vessel may be demonstrated.