Objective evaluation of vessel attenuation in multidetector-row computed tomographic pulmonary angiography using high-density contrast material for the detection of pulmonary embolism
| Autor: | Martin H. K. Hoffmann, Stefan Klein, Martin Jeltsch, Andrik J. Aschoff, Markus Juchems |
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| Rok vydání: | 2009 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent medicine.medical_treatment Contrast Media Pulmonary Artery Sensitivity and Specificity Young Adult Hounsfield scale medicine Pulmonary angiography Humans Radiology Nuclear Medicine and imaging Bolus tracking Saline Aged Aged 80 and over business.industry Attenuation Angiography Reproducibility of Results Middle Aged medicine.disease Spiral computed tomography Pulmonary embolism Iopamidol Radiographic Image Enhancement Embolism cardiovascular system Female Radiology business Pulmonary Embolism Tomography X-Ray Computed |
| Zdroj: | Journal of computer assisted tomography. 32(6) |
| ISSN: | 1532-3145 |
| Popis: | OBJECTIVE The purpose of this study was to analyze the pulmonary vessel enhancement obtainable using high-density contrast material and saline flushing with automated bolus tracking for multidetector-row computed tomographic (MDCT) pulmonary angiography in a routine clinical setting. METHODS Attenuation values of pulmonary vessels were retrospectively measured in 51 CT scans performed on a 40-channel MDCT for unselected emergency patients with clinically suspected pulmonary embolism. RESULTS Mean vascular attenuation measured 326.7 +/- 104 Hounsfield units (HU) in the pulmonary trunk and 299.1 +/- 102 HU in the left distal lower lobe artery. Mean vascular attenuation values in the distal lower lobe artery were equal or higher than 150 HU for 94.1% (48/51) of patients. CONCLUSIONS In conclusion, the combination of high-density contrast media and saline flushing with automated bolus tracking on a fast CT scanner reliably results in a homogenously high attenuation of pulmonary vessels, allowing precise delineation of clots down to the subsegmental level in MDCT pulmonary angiography. |
| Databáze: | OpenAIRE |
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