Dynamic half-Fourier single-shot turbo spin echo for assessment of deep venous thrombosis: initial observations |
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Authors: | Ivan Pedrosa Long Ngo Jesse Wei Michael Schuster Houman Mahallati Martin Smith Neil M. Rofsky |
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Affiliation: | 1. Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA;2. Department of Medicine, Beth Israel Deaconess Medical Center, Brookline, MA 02446, USA;3. Department of Radiology, Foothills Hospital, Calgary, Alberta, Canada T2N 2T9 |
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Abstract: | ObjectiveThe objective of this study was to retrospectively analyze the value of dynamic half-Fourier single-shot turbo spin echo (HASTE) imaging in patients with suspected deep venous thrombosis (DVT).Materials and MethodsFifty-five veins in 24 patients were interrogated using a HASTE sequence with the patients relaxed and in various degrees of Valsalva. Veins were analyzed for changes in caliber (+CAL) and signal intensity (+SI) or in their absence (−CAL and −SI, respectively) and compared with the presence of thrombus on gadolinium-enhanced magnetic resonance imaging.ResultsThere was no thrombus in veins with the +CAL, +SI pattern (n=40) (P<.01). Five of seven veins (71.4%) with the −CAL, −SI pattern had thrombus (P<.01). A qualitative change in CAL had a sensitivity of 100% and a specificity of 91% for the presence of thrombus. An increase of 1.5 mm in CAL had a sensitivity of 100% and a specificity of 93% for this diagnosis.ConclusionDynamic HASTE imaging offers a physiological method to evaluate veins for deep venous thrombosis. |
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Keywords: | Magnetic resonance imaging Deep venous thrombosis Venography |
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