Project Details
Abstract
Catheter angiography, as a part of the preoperative evaluation of meningiomas, provides
important information such as tumor vascularity, vascular anatomy of feeding arteries and
draining veins that helps in surgical planning. Meningiomas with increased vascularity and
accessible arterial feeders may further receive preoperative embolization which may reduce
intraoperative blood loss.For meningiomas with low or absent of angiographic vascularity,
embolization or even diagnostic angiography can be avoided.So far, the vascularity of
meningiomas can only be obtained with catheter angiography and not by other noninvasive
methods.
Physiologic MRI refers to advanced MRI techniques that may include but are not limited
diffusion, perfusion and susceptibility. In contrast to conventional MRI that provides only
structural information, physiologic MRI yields quantitative clinical surrogate markers that
may reflect in vivo characteristics such as cellularity, microvascular density and permeability
of a lesion.It has been shown that physiologic MRI may assist lesion characterization,
treatment response assessment and outcome prediction.The roles of physiologic MRI in the
assessment of angiographic vascularity of meningiomas, to the best of our knowledge, have
never been investigated. Our hypothesis is that the physiologic MRI can reflect the
angiographic vascularity of meningiomas.
In this 3‐year study, we will evaluate meningiomas with physiologic MRI. We aim to: 1) study
if physiologic MRI could predictthe angiographic tumor vascularity of meningiomas;
2)compare the diagnostic performance of physiologic MRI techniques that require exogenous
gadolinium contrast administration (e.g. DSC or DCE perfusion MRI) with those do not (e.g.
diffusion and ASL) in predicting angiographic vascularity of meningiomas.
We will include 60 patients (age range, 20‐80 years) with suspected meningioma on prior
imaging studies and have no contraindication to MRI. The patient will have MRI and catheter
angiography prior to surgery. Correlation and regression analysis will be performed between
quantitative markers of physiologic MRI and angiographic tumor vascularity. The complete
MRI protocol is about 45 minutes. Except preexisting risk associated with regular diagnostic
angiography and surgery, there is no additional risk related to the physiologic MRI.We expect
the results of this study will help us to select patients with meningioma for catheter
angiography.
Project IDs
Project ID:PC10207-0440
External Project ID:NSC102-2314-B182-055
External Project ID:NSC102-2314-B182-055
Status | Finished |
---|---|
Effective start/end date | 01/08/13 → 31/07/14 |
Keywords
- meningioma
- vascularity
- physiologic MRI
- diffusion
- perfusion
- susceptibility
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