Ebook Introduction to musculoskeletal ultrasound getting started: Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook Introduction to musculoskeletal ultrasound getting started: Part 2
Ebook Introduction to musculoskeletal ultrasound getting started: Part 2
CHAPTERImaging MuscleUltrasound provides high-resolution images of muscle and can detect even subtle abnormalities, rhe dynamic capabilities of ultras Ebook Introduction to musculoskeletal ultrasound getting started: Part 2sound allow identification of pathology not appreciable with static imaging. Ultrasound allows precise measurement of muscle size and can delect atrophy as well as echotexture changes in muscle disease.MUSCLE ARCHITECTUREMuscles are generally more hypoechoic (darker) relative to other tissues such a Ebook Introduction to musculoskeletal ultrasound getting started: Part 2s tendons (Figure 8.1). Knowledge of muscle anatomy is critical for understanding the region scanned because muscle tissue makes up the majority of thEbook Introduction to musculoskeletal ultrasound getting started: Part 2
e image in the limbs. Muscles have characteristic architecture that includes intervening hypoechoic muscle fibers with hyperechoic connective tissue tCHAPTERImaging MuscleUltrasound provides high-resolution images of muscle and can detect even subtle abnormalities, rhe dynamic capabilities of ultras Ebook Introduction to musculoskeletal ultrasound getting started: Part 2c (bright) connective tissue interspersed between the hypoechoic (dark) muscle fibers (Figure 8.2). Skeletal muscle is made of individual muscle fibers that are grouped in bundles called a fasciculus (Figure 8.3). Muscle fiber diameter is somewhat smaller than the resolution of current high-frequenc Ebook Introduction to musculoskeletal ultrasound getting started: Part 2y ultrasound and ranges from approximately 40 to 80 pm.There are different types of arrangements of skeletal muscles in the limbs. This includes pennaEbook Introduction to musculoskeletal ultrasound getting started: Part 2
te, parallel, convergent, and quadrilateral-shaped muscles (Figure 8.4). Pennate muscles that have many fibers per unit area are arranged into three tCHAPTERImaging MuscleUltrasound provides high-resolution images of muscle and can detect even subtle abnormalities, rhe dynamic capabilities of ultras Ebook Introduction to musculoskeletal ultrasound getting started: Part 2SKELETAL ULTRASOUND: GETTING STARTEDFIGURE 8.1 Sonogram demonstrating the contrast between muscle and tendon. The more hypoechoic (darker) muscle in long axis is demonstrated (yellow arrow) next to the hyperechoic (brighter) tendon in long axis. Note the hypoechoic muscle fibers in relation to the f Ebook Introduction to musculoskeletal ultrasound getting started: Part 2ibrillar architecture of the tendon. Also note the different appearance of muscle oriented in short axis relative to the transducer (red arrow).FIGUREEbook Introduction to musculoskeletal ultrasound getting started: Part 2
8.2 Sonogram demonstrating the "starry night" appearance of muscle in short axis with intervening bright perimysium interspersed with darker muscle fCHAPTERImaging MuscleUltrasound provides high-resolution images of muscle and can detect even subtle abnormalities, rhe dynamic capabilities of ultras Ebook Introduction to musculoskeletal ultrasound getting started: Part 2Figure 8.6). Quadrilateral-type muscles have fibers in parallel, and are oriented in the same longitudinal axis as the tendon (Figure 8.7). Examples of quadrilateral-type muscles include the pronator quadratus and quadratus plantae. Familiarity with the different arrangement of muscles improves reco Ebook Introduction to musculoskeletal ultrasound getting started: Part 2gnition of the muscle landmarks.8 • IMAGING MUSCLE *83FIGURE 8.3 Illustration of the components of skeletal muscle. The bundle of muscle fibers surrouEbook Introduction to musculoskeletal ultrasound getting started: Part 2
nded by perimysium makes up the fasciculus.FIGURE 8.4 Illustrations of various muscles types. Shown are parallel(A), unipennate (B), bipennate (C), fuCHAPTERImaging MuscleUltrasound provides high-resolution images of muscle and can detect even subtle abnormalities, rhe dynamic capabilities of ultras Ebook Introduction to musculoskeletal ultrasound getting started: Part 2am demonstrating the unipennate structure of the soleus inserting on the Achilles tendon. Deep to the bipennate structure of the flexor hallucis longus is shown.FIGURE 8.6 Sonogram demonstrating a portion of the convergent pattern of the deltoid next to the fusiform pattern of the biceps brachii.8 • Ebook Introduction to musculoskeletal ultrasound getting started: Part 2 IMAGING MUSCLE *85(A)(B)FIGURE 8.7 Sonogram demonstrating the quadrilateral-shaped pronator quadratus in long (A) and short (B) axis.MUSCLE IMAGING TEbook Introduction to musculoskeletal ultrasound getting started: Part 2
ECHNIQUESMuscle should be scanned in both short and long axis and sufficient area should be inspected to enable pathology to be spotted when present. CHAPTERImaging MuscleUltrasound provides high-resolution images of muscle and can detect even subtle abnormalities, rhe dynamic capabilities of ultras Ebook Introduction to musculoskeletal ultrasound getting started: Part 2gure 8.8). Knowledge of the normal shape and location of insertion and origin of the specific muscle being inspected is critical for appropriate transducer placement.8 6 • INTRODUCTION TO MUSCULOSKELETAL ULTRASOUND: GETTING STARTED(A)(B)(C)FIGURE 8.8 Sonograms demonstrating the long-axis (A) and sho Ebook Introduction to musculoskeletal ultrasound getting started: Part 2rt-axis (B) views of the biceps brachii muscle. The normal striations of the muscle are seen in longitudinal view and the cross-sectional architectureEbook Introduction to musculoskeletal ultrasound getting started: Part 2
is well identified in proper short-axis view. Inspecting the muscle architecture is somewhat more challenging when the transducer is in an oblique poCHAPTERImaging MuscleUltrasound provides high-resolution images of muscle and can detect even subtle abnormalities, rhe dynamic capabilities of ultras Ebook Introduction to musculoskeletal ultrasound getting started: Part 2omy is necessary for this. Muscles should also generally be followed to the level of their myoten-dinous junctions, as this is a frequent site of mechanical injury. This is Ebook Introduction to musculoskeletal ultrasound getting started: Part 2CHAPTERImaging MuscleUltrasound provides high-resolution images of muscle and can detect even subtle abnormalities, rhe dynamic capabilities of ultrasGọi ngay
Chat zalo
Facebook