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Flow and pressure measurements in aneurysms and arteriovenous malformations with phase contrast MR imaging
- Source :
- Magnetic Resonance Imaging. 34:1322-1328
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- To explore phase contrast (PC) magnetic resonance imaging of aneurysms and arteriovenous malformations (AVM). PC imaging obtains a vector field of the velocity and can yield additional hemodynamic information, including: volume flow rate (VFR) and intravascular pressure. We expect to find lower VFR distal to aneurysms and higher VFR in vessels of the AVM.Five cerebral aneurysm and three AVM patients were imaged with PC techniques and compared to VFR of a healthy cohort. VFR was calculated in vessel segments in each patient and compared statistically to the healthy cohort by computing the z-score. Intravascular pressure was calculated in the aneurysms and in the nidus of each AVM.We found that patients with aneurysm had z-0.48 in vessels distal to the aneurysm (reduced flow), while AVM patients had z6 in some vessels supplying and draining the nidus (increased flow). Pressures in aneurysms were highly variable between subjects and location, while in the nidus of the AVM patients; pressure trended higher in larger AVMs.The study findings confirm the expectation of lower distal flow in aneurysm and higher arterial and venous flow in AVM patients.
- Subjects :
- Adult
Intracranial Arteriovenous Malformations
Male
medicine.medical_specialty
Phase contrast microscopy
Biomedical Engineering
Biophysics
Hemodynamics
Blood Pressure
030218 nuclear medicine & medical imaging
law.invention
Young Adult
03 medical and health sciences
0302 clinical medicine
Aneurysm
law
Image Processing, Computer-Assisted
medicine
Humans
Radiology, Nuclear Medicine and imaging
cardiovascular diseases
Aged
Aged, 80 and over
medicine.diagnostic_test
business.industry
Intracranial Aneurysm
Magnetic resonance imaging
Middle Aged
medicine.disease
Magnetic Resonance Imaging
Mr imaging
Pressure measurement
Blood pressure
cardiovascular system
Female
Radiology
business
Blood Flow Velocity
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 0730725X
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Magnetic Resonance Imaging
- Accession number :
- edsair.doi.dedup.....d3493f0b509b1837ae1040031ae31ec9