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1722 PART V Pediatric SonographyTABSCFIG. 50.32 Normal HyperalimentationCatheter. (A) Chest radiograph with contrastinjection shows catheter in superior vena cava.No clot was seen on the catheter (arrowhead)on (B) longitudinal sonogram and (C) transversesonogram. Thymus (T) was used aswindow. S, Superior vena cava.RVOTRLRAAORPATHA B CFIG. 50.33 Pulmonary Embolus. (A) Chest radiograph shows hyperlucent left lung in 4-year-old child. (B) Pulmonary perfusion scan showsno perfusion to left lung. (C) Transverse sonogram through heart shows saddle embolus in main pulmonary artery. AO, Aorta; RA, right atrium;RPA, right pulmonary artery; RVOT, right ventricular outlow tract; TH, thrombus.
CHAPTER 50 The Pediatric Chest 1723AVInvertedA B CFIG. 50.34 Paget-Schroetter Syndrome. (A) Gray-scale, (B) color low, and (C) spectral Doppler waveform images show subclavian veinthrombosis with absence of color low and absence of Doppler signal secondary to a thoracic outlet syndrome in a 17-year-old female equestrian.(Courtesy of Dr. Charles A. James, Arkansas Children’s Hospital, Little Rock, AK.)Lymphovascular MalformationLymphatic malformations 51 (Fig. 50.35) are composed of dilatedlymphatic sacs of variable size, which may appear unilocular ormultilocular. Lymphatic malformations may undergo hemorrhage,in which case the lesion appears as a uniformly echogenic massor multiple cysts containing echogenic debris. Septations in cysticlesions are better identiied by ultrasound than by CT or magneticresonance imaging (MRI).MEDIASTINAL MASSESCT and MRI are the primary modalities for evaluation ofmediastinal masses detected by chest radiography. Suprasternalsonography 52 can be useful for detecting small and large mediastinalmasses, particularly lymphoma. Mediastinal sonographyfor masses should include major vessels or cardiac chambers inthe ield of view so that mass and vessel echogenicity can becompared directly. his prevents the pitfall created by reducingthe gain setting in response to the hyperechoic appearance ofadjacent lung. he reduced gain setting gives a falsely anechoicappearance to a solid mass. Juxtaphrenic paravertebral massesmay be detected with a subxiphoid or transdiaphragmaticapproach.Mediastinal ultrasound can also determine whether chestmasses extend into the neck. Retrosternal thyroid mass extensiondetection by ultrasound is helpful for surgical planning. Ultrasoundallows characterization of masses as solid or cystic. Dopplerimaging may be helpful in evaluating whether a chest mass isvascular in origin. Malignant chest masses demonstrate a lowimpedance,high–diastolic-low Doppler signal. 53 Color Dopplerultrasound before percutaneous biopsy can rule out vascularlesions that would preclude biopsy.A widened superior mediastinum detected on chest radiographycan be evaluated initially by sonography. Detection of anormal but prominent thymus rather than a mediastinal massprecludes the need for CT. he thymus is normally located inthe superior mediastinum anterior to the great vessels in thesuperior mediastinum, from the superior edge of the manubriumto the fourth costal cartilage. he thymus is mildly hypoechoicrelative to liver, spleen, and thyroid. It shows some echogenicstrands. A ine granular echotexture gives the thymus a “starrysky” appearance (see Fig. 50.31). A ibrous capsule gives thethymus a smooth, well-deined margin.Thymic Indexhymic index is the product of thymic width measured ontransverse images and the area of the largest lobe measured ona longitudinal image 54-56 (Table 50.1). he thymic index hasacceptable correlation with actual thymus weight and volume.he measurement is performed during expiration to obtain astandardized size. hymic index is greater in children with activeatopic dermatitis than in healthy controls 57 (Fig. 50.36). Largerthymic index at birth is associated with lower infant mortalityrate. 58 hymic size varies with age, and normal thymic indexvalues have been established 54-56 (Table 50.2).Abnormal Location of Thymus MimickingMass LesionSuperior herniation of thymus into the neck is a rare entity inwhich there is intermittent migration of the broadest part of thenormal thymus out of the thorax into the suprasternal region.Real-time ultrasound shows that the mass moves into the neckduring Valsalva maneuver, with an increase in the intrathoracicpressure, and has typical echotexture of thymus, thereby avoidingunnecessary biopsy and surgery. 59 Cervical ectopic thymus isan uncommon variant. A hypoechoic mass with characteristicthymic ultrasound echotexture is identiied along the track ofthe thymopharyngeal duct. 60,61 he thymus can protrude intothe chest wall as a bulging mass because of a congenital sternaldefect. Real-time ultrasound can demonstrate movement ofherniated thymus during respiratory cycles.Anterior Mediastinal MassesBenign abnormalities of the thymus in children include thymiccyst, intrathymic hemorrhage, thymolipoma, and thymoma. hethymus may also be involved by a hemangioma, lymphatic
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viiiContributorsOlga R. Brook, MDAs
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xContributorsChristy K. Holland, Ph
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xiiContributorsRupa Radhakrishnan,
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xxiiContentsVOLUME IIPART IV Obstet
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xxivVideo ContentsVideo 12.8 Angiog
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xxviVideo ContentsVideo 26.20 High-
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xxviiiVideo Contents42 Fetal Measur
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2 PART I Physicsphysics. he amplitu
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4 PART I Physics× ms×FIG. 1.4 Ult
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6 PART I Physicsθ 1 = 20°Tissue A
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8 PART I Physicssignature. Broad-ba
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10 PART I PhysicsFIG. 1.13 B-Mode I
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12 PART I PhysicsIn these transduce
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14 PART I PhysicsFIG. 1.17 Tissue H
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16 PART I PhysicsKey Points of Ultr
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18 PART I PhysicsA - Normal liverv
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20 PART I PhysicsFIG. 1.27 Reverber
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22 PART I Physics-0 dBUncorrected-0
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24 PART I Physicsθ = 0°cos θ = 1
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26 PART I PhysicsABFIG. 1.38 Color
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28 PART I PhysicsChanges in Doppler
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30 PART I PhysicsABFIG. 1.44 Wall F
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32 PART I PhysicsABCDFIG. 1.46 Alia
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CHAPTER2Biologic Effects and Safety
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36 PART I PhysicsPressurePulse repe
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38 PART I PhysicsUltrasound imaging
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40 PART I Physicsacoustic power and
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42 PART I PhysicsFIG. 2.6 Acoustic
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44 PART I PhysicsThe AIUM Statement
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46 PART I Physics1. Current ultraso
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48 PART I PhysicsEPIDEMIOLOGYWith a
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50 PART I Physicscontrols whether t
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52 PART I Physics70. Hwang JH, Tu J
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54 PART I PhysicsA B 5 μmFIG. 3.1
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56 PART I Physicsstudies with Levov
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58 PART I Physicsabdominal organs.
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60 PART I PhysicsHarmonic B-Mode Im
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62 PART I PhysicsFIG. 3.9 Contrast-
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64 PART I Physicsdramatic manifesta
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66 PART I Physics5 µmFIG. 3.15 Fra
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68 PART I Physicsplatelet lysis), n
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70 PART I PhysicsEnhancement1 2 3 4
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72 PART I Physics46. Hamilton MF, B
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PART TWO: Abdominal and Pelvic Sono
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76 PART II Abdominal and Pelvic Son
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100 PART II Abdominal and Pelvic So
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ABFIG. 5.20 Microabscesses in Two P
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ABFIG. 6.32 Distal Cholangiocarcino
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CHAPTER7The PancreasThomas Winter a
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CHAPTER8The Gastrointestinal TractS
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ABFIG. 8.16 Lymphadenopathy in Two
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A B CD E FG H IFIG. 8.23 Inlammator
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FIG. 8.56 Gastrointestinal Stromal
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CHAPTER9The Kidney and Urinary Trac
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Remnant ofpronephrosMesonephrosBMes
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CHAPTER11The Adrenal GlandsChristin
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CHAPTER12The RetroperitoneumRaymond
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CHAPTER13Dynamic Ultrasound of Hern
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CHAPTER14The PeritoneumAnthony E. H
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CHAPTER15The UterusDouglas Brown an
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CHAPTER16The AdnexaRochelle Filker
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692 PART III Small Parts, Carotid A
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CHAPTER20The Parathyroid GlandsBonn
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*** *FIG. 21.8 Terminal Ductolobula
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CHAPTER22The ScrotumDaniel Sommers
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CHAPTER23Overview of Musculoskeleta
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CHAPTER25Musculoskeletal Interventi
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ABCDFIG. 25.15 Biceps Tendon Sheath
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CHAPTER27Peripheral VesselsMark E.
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ABFIG. 27.29 Chronic Deep Venous Th
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1000 PART III Small Parts, Carotid
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e2APPENDIXUltrasound Artifacts: A V
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FIG. A.18 Comet-Tail Artifact. On c
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e12APPENDIXUltrasound Artifacts: A
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I-2 IndexAcetabulumdescription of,
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I-4 IndexAnemiafetal, hydrops from,
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I-6 IndexAttenuationcoeicient, 36of
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I-8 IndexBlood low. See also Cerebr
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I-10 IndexBreast(s) (Continued)thic
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I-12 IndexCat-scratch disease, pedi
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I-14 IndexChorion laeve, 1465-1466C
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I-16 IndexContrast agents (Continue
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I-18 IndexCyst(s) (Continued) Cyst(
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I-20 IndexDoppler ultrasound (Conti
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I-22 IndexEndocardial cushion(s), 1
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I-24 IndexFibroma(s) (Continued)par
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I-26 IndexGerminal epithelium, 565G
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I-28 IndexHematoma(s) (Continued)pe
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I-30 IndexHoloprosencephaly (HPE) (
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I-32 IndexImplants, breast (Continu
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I-34 IndexJaundice (Continued)bile
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I-36 IndexLipomyelocele, closed spi
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I-38 IndexMammary ductsnormal sonog
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I-40 IndexMolar pregnancy. See Hyda
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I-42 IndexNonrhizomelic chondrodysp
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I-44 IndexPancreas (Continued)percu
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I-46 IndexPeritoneum (Continued)tum
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I-48 IndexPosterior fossa (Continue
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I-50 IndexPyloric musclehypertrophy
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I-52 IndexSample volume size, Doppl
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I-54 IndexSpectral broadening, in D
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I-56 IndexSuperoanteromedial ridge,
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I-58 Indexhrombosis (Continued)of s
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I-60 IndexTrisomy 18 (Edwards syndr
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I-62 IndexUrinary tract, pediatric
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I-64 IndexWalker-Warburg syndromeco
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DIAGNOSTICULTRASOUND
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DIAGNOSTICULTRASOUND5TH EDITIONCARO
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ABOUT THE EDITORSCarol M. Rumack, M
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ContributorsviiCONTRIBUTORSJacques
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ContributorsixPeter M. Doubilet, MD
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ContributorsxiAna P. Lourenco, MDAs
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ContributorsxiiiWendy hurston, MDAs
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In memory of my parents, Drs. Ruth
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PrefacexviiPREFACEhe ith edition of
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AcknowledgmentsxixACKNOWLEDGMENTSWe
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ContentsxxiCONTENTSVOLUME IPART I P
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Video ContentsxxiiiVIDEO CONTENTS4
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Video Contentsxxv19 The Thyroid Gla
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Video Contentsxxvii33 The Fetal Fac
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Video Contentsxxix52 The Pediatric
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DIAGNOSTICULTRASOUND
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PART FOUR: Obstetric and Fetal Sono
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CHAPTER 28 Overview of Obstetric Im
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ABCDFIG. 28.9 Second-Trimester Biom
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CHAPTER 29 Bioeffects and Safety of
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CHAPTER 30 The First Trimester 1049
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CHAPTER 31 Chromosomal Abnormalitie
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ABCDFIG. 31.12 Sonographic Findings
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CHAPTER32Multifetal PregnancyMary C
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CHAPTER 32 Multifetal Pregnancy 111
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ABFIG. 32.5 Sonographic Findings Se
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CHAPTER33The Fetal Face and NeckAna
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CHAPTER 33 The Fetal Face and Neck
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Page 1315 and 1316:
Page 1317 and 1318:
ABCDFIG. 33.13 Hypertelorism With E
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ABCDFIG. 33.16 Dacryocystocele. (A)
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ABCDEFFIG. 33.24 Unilateral Complet
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CHAPTER 34 The Fetal Brain 1167impo
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CHAPTER 34 The Fetal Brain 1169cmAB
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CingulatePOCalcarineAB21 wkCD25 wkI
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CHAPTER 34 The Fetal Brain 1173FIG.
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CHAPTER 34 The Fetal Brain 1175LTAR
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CHAPTER 34 The Fetal Brain 1177CC12
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CHAPTER 34 The Fetal Brain 1179SPEC
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CHAPTER 34 The Fetal Brain 1181ABCD
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CHAPTER 34 The Fetal Brain 1183asym
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CHAPTER 34 The Fetal Brain 1185FIG.
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CHAPTER 34 The Fetal Brain 1187Cere
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CHAPTER 34 The Fetal Brain 1189loba
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CHAPTER 34 The Fetal Brain 1191ABCF
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CHAPTER 34 The Fetal Brain 1193ABCF
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CHAPTER 34 The Fetal Brain 1195spor
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ABCCCDEFFIG. 34.24 Type 2 Lissencep
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CHAPTER 34 The Fetal Brain 1199ABFI
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CHAPTER 34 The Fetal Brain 120120 w
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CHAPTER 34 The Fetal Brain 1203Ultr
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CHAPTER 34 The Fetal Brain 1205ABCD
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VSSABHHPHCDEFFIG. 34.35 Intracrania
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CHAPTER 34 The Fetal Brain 1209VABC
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CHAPTER 34 The Fetal Brain 1211Huma
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CHAPTER 34 The Fetal Brain 1213121.
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CHAPTER 34 The Fetal Brain 1215221.
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CHAPTER 35 The Fetal Spine 1217ABCF
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CHAPTER 35 The Fetal Spine 1219L1S3
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CHAPTER 35 The Fetal Spine 1221FTFT
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CHAPTER 35 The Fetal Spine 1223FIG.
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CHAPTER 35 The Fetal Spine 1225TABL
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CHAPTER 35 The Fetal Spine 1227Feta
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CHAPTER 35 The Fetal Spine 1229MMAB
Page 1403 and 1404:
ABCDEFFIG. 35.15 Skin-Covered Myelo
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CHAPTER 35 The Fetal Spine 1233diic
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CHAPTER 35 The Fetal Spine 1235CCSC
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CHAPTER 35 The Fetal Spine 1237chon
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CHAPTER 35 The Fetal Spine 1239BSCT
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CHAPTER 35 The Fetal Spine 124162.
Page 1415 and 1416:
CHAPTER36The Fetal ChestDorothy Bul
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CHAPTER 36 The Fetal Chest 1245seco
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CHAPTER 36 The Fetal Chest 1247TABL
Page 1421 and 1422:
CHAPTER 36 The Fetal Chest 1249Left
Page 1423 and 1424:
CHAPTER 36 The Fetal Chest 12511ABC
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CHAPTER 36 The Fetal Chest 1253ABCF
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CHAPTER 36 The Fetal Chest 1255cent
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CHAPTER 36 The Fetal Chest 1257Left
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CHAPTER 36 The Fetal Chest 1259ABCD
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CHAPTER 36 The Fetal Chest 1261RTLT
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CHAPTER 36 The Fetal Chest 1263ARig
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CHAPTER 36 The Fetal Chest 12659. B
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CHAPTER 36 The Fetal Chest 1267107.
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CHAPTER 36 The Fetal Chest 1269204.
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CHAPTER 37 The Fetal Heart 1271TABL
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CHAPTER 37 The Fetal Heart 1273TABL
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CHAPTER 37 The Fetal Heart 1275Plac
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CHAPTER 37 The Fetal Heart 1277ADop
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CHAPTER 37 The Fetal Heart 1279LVRV
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CHAPTER 37 The Fetal Heart 1281RARV
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CHAPTER 37 The Fetal Heart 1283RARV
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CHAPTER 37 The Fetal Heart 1285Norm
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CHAPTER 37 The Fetal Heart 1287RVLV
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CHAPTER 37 The Fetal Heart 1289RVTA
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CHAPTER 37 The Fetal Heart 1291LVRA
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CHAPTER 37 The Fetal Heart 1293Aspl
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CHAPTER 37 The Fetal Heart 1295PLVL
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CHAPTER 37 The Fetal Heart 1297HR-L
Page 1471 and 1472:
CHAPTER 37 The Fetal Heart 129951.
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CHAPTER 38 The Fetal Gastrointestin
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UrogenitalsinusMesonephrosMesonephr
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CHAPTER 39 The Fetal Urogenital Tra
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CHAPTER 40 The Fetal Musculoskeleta
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CHAPTER 41 Fetal Hydrops 1413ABFIG.
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ABCDFIG. 41.2 Ascites. (A) Fluid ou
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CHAPTER 41 Fetal Hydrops 1417A B CD
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CHAPTER 41 Fetal Hydrops 1423later
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CHAPTER 41 Fetal Hydrops 1427CHABCH
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CHAPTER 41 Fetal Hydrops 1429Monoch
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CHAPTER 41 Fetal Hydrops 1431feedin
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CHAPTER 41 Fetal Hydrops 1433TABLE
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CHAPTER 41 Fetal Hydrops 1435sampli
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CHAPTER 41 Fetal Hydrops 1437Predel
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CHAPTER 41 Fetal Hydrops 143973. Ma
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CHAPTER 41 Fetal Hydrops 1441169. I
Page 1615 and 1616:
CHAPTER42Fetal Measurements: Normal
Page 1617 and 1618:
CHAPTER 42 Fetal Measurements 1445F
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CHAPTER 42 Fetal Measurements 1447T
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CHAPTER 42 Fetal Measurements 1451p
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CHAPTER 42 Fetal Measurements 1453d
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CHAPTER 42 Fetal Measurements 1455A
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CHAPTER 42 Fetal Measurements 1459A
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CHAPTER 42 Fetal Measurements 14618
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CHAPTER 42 Fetal Measurements 14631
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CHAPTER43Sonographic Evaluation oft
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CHAPTER 43 Sonographic Evaluation o
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CHAPTER44Cervical Ultrasound and Pr
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CHAPTER 44 Cervical Ultrasound and
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PART FIVE: Pediatric SonographyCHAP
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CHAPTER 45 Neonatal and Infant Brai
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CHAPTER46Duplex Sonography of the N
Page 1747 and 1748:
CHAPTER 46 Duplex Sonography of the
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CHAPTER47Doppler Sonography of the
Page 1765 and 1766:
CHAPTER 47 Doppler Sonography of th
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CHAPTER 48 The Pediatric Head and N
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Page 1843 and 1844: CHAPTER 48 The Pediatric Head and N
Page 1845 and 1846: CHAPTER 49 The Pediatric Spinal Can
Page 1865 and 1866: RA B CDEFGFIG. 49.27 Neuroblastoma
Page 1873 and 1874: CHAPTER50The Pediatric ChestChetan
Page 1875 and 1876: CHAPTER 50 The Pediatric Chest 1703
Page 1893: CHAPTER 50 The Pediatric Chest 1721
Page 1903 and 1904: CHAPTER 51 The Pediatric Liver and
Page 1943 and 1944: ABCFIG. 51.39 Hepatosplenomegaly. W
Page 1945 and 1946:
CHAPTER 51 The Pediatric Liver and
Page 1947 and 1948:
CHAPTER52The Pediatric Urinary Trac
Page 1949 and 1950:
CHAPTER 52 The Pediatric Urinary Tr
Page 1951 and 1952:
TABLE 52.4 Mean Total Renal Volumes
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CHAPTER53The Pediatric Gastrointest
Page 2007 and 2008:
CHAPTER 53 The Pediatric Gastrointe
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CHAPTER 54 Pediatric Pelvic Sonogra
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CHAPTER 55 The Pediatric Hip and Ot
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ABCDFIG. 55.13 Normal and Dislocate
Page 2111 and 2112:
Page 2113 and 2114:
Page 2115 and 2116:
CHAPTER 56 Pediatric Interventional
Page 2117 and 2118:
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ABCFIG. 56.15 Access for Drainage o
Page 2133 and 2134:
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APPENDIXUltrasound Artifacts: A Vir
Page 2143 and 2144:
APPENDIX Ultrasound Artifacts: A Vi
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Page 2177 and 2178:
Page 2179 and 2180:
IndexAAA anastomoses. See Arterial/
Page 2181 and 2182:
Index I-3Adnexa (Continued)transvag
Page 2183 and 2184:
Index I-5Arrays, transducer, 11-12A
Page 2185 and 2186:
Index I-7Bioefects (Continued) Biop
Page 2187 and 2188:
Index I-9Brain, neonatal/infant (Co
Page 2189 and 2190:
Index I-11Carcinoma(s) (Continued)
Page 2191 and 2192:
Index I-13Cervix (Continued)for sym
Page 2193 and 2194:
Index I-15Color Doppler ultrasound
Page 2195 and 2196:
Index I-17Cystic artery, 194promine
Page 2197 and 2198:
Index I-19Diabetes mellituschronic
Page 2199 and 2200:
Index I-21Echinococcal disease (Con
Page 2201 and 2202:
Index I-23Exudate ascites, 506-507E
Page 2203 and 2204:
Index I-25Gallbladder (Continued)ad
Page 2205 and 2206:
Index I-27Gyriabnormalities of, in
Page 2207 and 2208:
Index I-29Hernia(s). See also Diaph
Page 2209 and 2210:
Index I-31Hyperechoic tissue, in br
Page 2211 and 2212:
Index I-33Internal jugular vein (IJ
Page 2213 and 2214:
Index I-35Kidneys, pediatric (Conti
Page 2215 and 2216:
Index I-37Liver transplantation (Co
Page 2217 and 2218:
Index I-39Mesentery, small bowel, 5
Page 2219 and 2220:
Index I-41Nasal bone, fetal (Contin
Page 2221 and 2222:
Index I-43Orbits, fetal (Continued)
Page 2223 and 2224:
Index I-45Patau syndrome. See Triso
Page 2225 and 2226:
Index I-47Pleural efusionsfetal, 12
Page 2227 and 2228:
Index I-49Prostate (Continued)thera
Page 2229 and 2230:
Index I-51Renal transplantation (Co
Page 2231 and 2232:
Index I-53Shunt(s) (Continued) Skel
Page 2233 and 2234:
Index I-55Splenic vein (Continued)t
Page 2235 and 2236:
Index I-57Testis(es) (Continued)cys
Page 2237 and 2238:
Index I-59Transcranial Doppler (TCD
Page 2239 and 2240:
Index I-61Umbilical cord, 1481-1487
Page 2241 and 2242:
Index I-63Vein of Galen (Continued)
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Page 2249:
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