tailieunhanh - Ebook Interventional ultrasound - A practical guide and atlas (1st edition): Part 2

(BQ) Part 2 book "Interventional ultrasound -A practical guide and atlas" presents the following contents: Thoracic interventions, percutaneous renal biopsy, interventional urology, interventional thyroid ultrasound, musculoskeletal interventions, neurologic interventions, ultrasound guided regional anesthesia,. | Thorax 24 Thoracic Interventions 260 Specific Ultrasound-Guided Procedures 24 Thoracic Interventions W. Blank A. Heinzmann The chest wall including the thoracic inlet and axillae can be defined in exquisite detail with small lightweight high-resolution ultrasound transducers and modern ultrasound technology Fig. . Pulmonary lesions can be visualized if they are in contact with the visceral pleura or are accessible to ultrasound scans through a sound-conducting medium pleural effusion atelectasis .1-4 Approximately 75 of clinically significant mediastinal masses in adults are located in the anterior and middle mediastinum and can be imaged sonographically from a suprasternal or parasternal site left and right lateral decubitus .5 Only a few thoracic masses can be accurately classified etiologically on the basis of typical sonographic findings. Often a definitive diagnosis will require additional biochemical microbiologic cytologic or histologic evaluation. The specimens necessary for these studies can be acquired by various means Percutaneous aspiration or core biopsy ultrasound- or CT-guided Endoluminal access bronchoscopy endoluminal ultrasound Surgical access mediastinoscopy mediastinoscopic ultrasound thoracoscopy or open exposure Advantages of Ultrasound-Guided Interventions Masses that are detectable by ultrasound are usually accessible to percutaneous biopsy unless the targeted lesion or needle path cannot be clearly visualized. In the chest as elsewhere an ultrasound-guided intervention offers definite advantages over CT guidance in suitably selected cases6 7 The procedure can be performed quickly and at bedside. There is no radiation exposure to the patient physician or staff. The needle can be introduced in any direction and its path can be observed continuously. Ultrasound guidance can protect blood vessels color Doppler nerves nerve plexuses at the thoracic inlet Fig. and aerated lung from injury low incidence of pneumothorax Fig. . .

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