CT Chest With IV Contrast Chest CT with IV contrast offers high spatial resolution and can detect the number, size, and distribution of PAVMs accurately. Contrast-enhanced CT provides similar diagnostic accuracy as noncontrast CT due to the high natural contrast inherent to pulmonary anatomy. IV contrast material administration adds a small risk of air embolism in patients with PAVM. Adequate precaution should be taken to prevent air embolism [10,26]. Cross-sectional anatomy displayed on CT chest with IV contrast is useful in treatment planning [10,27]. CT Chest Without and With IV Contrast There is limited data to support obtaining a CT chest with and without IV contrast in the setting of suspected PAVM. A study by Nawaz et al [24] compared CT with and without IV contrast to digital subtraction angiography (DSA) for assessment of PAVMs. Their study showed superior sensitivity of CT compared to DSA for detection of PAVM; however, the specificity for CT was inferior to that of DSA. Cross-sectional anatomy displayed on CT chest with IV contrast is useful in treatment planning [10,27]. The benefit of using CT chest without and with IV contrast for assessing PAVM compared to stand-alone CT without IV contrast or CT with IV contrast is unclear [24]. CT Chest Without IV Contrast Noncontrast chest CT scan is helpful in confirming the diagnosis of PAVM. Like CT chest with IV contrast, Noncontrast CT offers high spatial resolution and can detect the number, size, and distribution of PAVMs accurately. Remy et al [28] were able to predict angioarchitecture of the PAVMs in 95% of cases using noncontrast CT and 3-D reconstruction. Cross-sectional anatomy displayed on CT chest without IV contrast is useful in treatment planning [10,27]. CTA Chest With IV Contrast CTA chest provides similar diagnostic accuracy as noncontrast CT due to the high natural contrast inherent to pulmonary anatomy. IV contrast material administration adds a small risk of air embolism in patients with PAVM.
Pulmonary Arteriovenous Malformation PAVM . CT Chest With IV Contrast Chest CT with IV contrast offers high spatial resolution and can detect the number, size, and distribution of PAVMs accurately. Contrast-enhanced CT provides similar diagnostic accuracy as noncontrast CT due to the high natural contrast inherent to pulmonary anatomy. IV contrast material administration adds a small risk of air embolism in patients with PAVM. Adequate precaution should be taken to prevent air embolism [10,26]. Cross-sectional anatomy displayed on CT chest with IV contrast is useful in treatment planning [10,27]. CT Chest Without and With IV Contrast There is limited data to support obtaining a CT chest with and without IV contrast in the setting of suspected PAVM. A study by Nawaz et al [24] compared CT with and without IV contrast to digital subtraction angiography (DSA) for assessment of PAVMs. Their study showed superior sensitivity of CT compared to DSA for detection of PAVM; however, the specificity for CT was inferior to that of DSA. Cross-sectional anatomy displayed on CT chest with IV contrast is useful in treatment planning [10,27]. The benefit of using CT chest without and with IV contrast for assessing PAVM compared to stand-alone CT without IV contrast or CT with IV contrast is unclear [24]. CT Chest Without IV Contrast Noncontrast chest CT scan is helpful in confirming the diagnosis of PAVM. Like CT chest with IV contrast, Noncontrast CT offers high spatial resolution and can detect the number, size, and distribution of PAVMs accurately. Remy et al [28] were able to predict angioarchitecture of the PAVMs in 95% of cases using noncontrast CT and 3-D reconstruction. Cross-sectional anatomy displayed on CT chest without IV contrast is useful in treatment planning [10,27]. CTA Chest With IV Contrast CTA chest provides similar diagnostic accuracy as noncontrast CT due to the high natural contrast inherent to pulmonary anatomy. IV contrast material administration adds a small risk of air embolism in patients with PAVM.