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Case Study On TRIRCKS-MRA

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showing extension to neighboring structures. The findings of the vascular lesions on TRICKS-MRA are shown in table 3. TRICKS-MRA was an accurate method in assessment of the size of AVM nidus. Eleven out of fifteen (73.3%) lesions were found to be larger than 2cm on TRICKS compared to 8/15 on MRI+C (53.3%) as well as in detection of the feeding arteries, whether single 9/15 (60%) (Fig 1 & 5) or multiple 6/15 (40%) (Fig. 2), and draining veins; superficial 8/15 (53.3%) or deep 7/15 (46.7%). Regarding the 5 patients with hemangiomas (see Fig 3& 4), 4 patients (80%) of them showed single arterial feeder, while one patient (20%) with peri-orbital hemangioma had dual arterial feeding. The two patients with low flow venous malformation …show more content…

Proper assessment is necessary to confirm the diagnosis and precisely determine structure of lesions, their size and topographic relationships before planning most effective treatment [21]. Color Doppler ultrasound imaging used for initial assessment of small superficial lesions and in follow-up in order to assess their evolution, but of limited role in proper assessment of adjacent soft tissue and osseous structure and depend on diagnostician’s experience [22]. Multislice CT has improved temporal resolution and spatial resolution in the scanning direction for CT angiography [23]. However, CTA examinations are high-radiation dose studies and it is not always possible to clearly differentiate between the lesion and adjacent tissues [24, 25]. DSA is the standard examination in assessment of AVMs, but it is an invasive procedure with risk of vascular injury and exposure to ionizing radiation. Additionally, DSA will characterize only the patent component of the vascular lesion which can lead to an underestimation of lesion size [26-28]. MRI with its high spatial resolution and multiplanar imaging can precisely assess vascular lesions and their relationships with nearby structures such as skin, subcutaneous tissue, muscles, nerves and bones. T2-weighted sequences with fat saturation and T1-weighted sequences after contrast administration enable determining the

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