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Attenuation is the removal of photons from a beam of x- or gamma rays as it passesthrough matter. Attenuation is caused by both absorption and scattering of the primaryphotons. The interaction mechanisms discussed in the last section contributein varying degrees to the attenuation. At low photon energies (1.02 MeV), well beyond the range of diagnosticand nuclear radiology, does pair production contribute to attenuation.The fraction of photons removed from a mono energetic beam of x- or gamma raysper unit thickness of material is called the linear attenuation coefficient (/1), typicallyexpressed in units of inverse centimeters (em-I). The number of photons removedfrom the beam traversing a very small thickness Llx can be expressed as:where n = the number of photons removed from the beam, and N = the number ofphotons incident on the material.For example, for 100-keV photons traversing soft tissue, the linear attenuationcoefficient is 0.016 mm- I . This signifies that for every 1,000 monoenergetic photonsincident upon a 1-mm thickness of tissue, approximately 16 will be removedfrom the beam, either by absorption or scattering.- 10?E~3ṯ::Gl'uIEGlo(Jt::o~III::st::0.30.10.03i1/11/1III:::E0.010.0030.00110100 1,000Energy (keV)FIGURE 3-13. Graph of theRayleigh, photoelectric, Compton,pair production, and totalmass attenuation coefficients forsoft tissue (Z = 7) as a function ofenergy.
Page 14:
Preface xvAcknowledgmentsForeword x
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Chapter 9: Fluoroscopy 2319.1 Funct
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16.3 Transducers 48316.4 Beam Prope
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B.3 Radiological Data for Elements
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We are deeply grateful to that part
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Can medical physics be interesting
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INTRODUCTION TO MEDICALIMAGINGMedic
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FIGURE 1-2. The chest x-ray is them
Page 54:
FIGURE 1-4. A computed tomography (
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angles around the patient. These pr
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FIGURE '-8. Sagittal (upper left),
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ducer, which records the returning
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TABLE 1-1. THE LIMITING SPATIAL RES
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WAVELENGTH(nanometers)FREQUENCY(her
Page 80: The physical properties of the most
Page 84: The energy required to remove an el
Page 88: An electron cascade does not always
Page 92: 160150140130120110100N
Page 96: The binding energy can be calculate
Page 102: INTERACTION OF RADIATIONWITH MATTER
Page 106: x10 3 7becomes electrically neutral
Page 110: Electrons can undergo inelastic int
Page 114: The nuclide produced by neutron abs
Page 118: Compton scattering results in the i
Page 122: CharacteristicX-rays:A: 0.6 keV (N~
Page 126: 10030 \~ r.." Photoelectric Effect
Page 132: As the thickness increases, however
Page 136: To calculate the linear attenuation
Page 140: TABLE 3-2. HALF VALUE LAYERS OF TIS
Page 144: the attenuation coefficient that wo
Page 148: absorbed dose is the rad (an acrony
Page 152: gies below 100 keY due to an increa
Page 156: TABLE 3-5. TISSUE WEIGHTING FACTORS
Page 160: Bushberg JT. The AAPM/RSNA physics
Page 164: In the decimal form, the ten digits
Page 168: 1 kilobyte (kB) = 2'0 bytes = 1024
Page 172: o 1 1 1 =71,1 h-> -~~I-~--I~-Time-t
Page 176: The digital form facilitates other
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A computer consists of a central pr
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memory can fit only small portions
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oards can be plugged. The boards in
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optical. The recording material of
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Array processor,-~- ~~~~~- ~- ~- -
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10 1=120 PRINT I301=1+140 IF 1
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4.6 STORAGE, PROCESSING, AND DISPLA
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FIGURE 4-10. Effect of number of bi
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y which volumetric data sets are re
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ond) of the beam. The electron beam
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The intensity of each pixel must be
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FIGURE 4-16. Windowing an image wit
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DIAGNOSTICRADIOLOGY
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Heated tungsten filamentcathodeEvac
Page 240:
Major factors that affect x-ray pro
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TABLE 5-2. K-SHELL CHARACTERISTIC X
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The focusing cup, also called the c
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Anode ConfigurationsX-ray tubes hav
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These and other factors determine t
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The effective focal spot length var
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The heel effect refers to a reducti
Page 268:
As mentioned earlier, filtration is
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x-ray attenuation) mimics the x-ray
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mary winding") carries the input lo
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A simple autotransformer consists o
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the electron target (anode). The tr
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some x-ray generators, preprogramme
Page 292:
independent of the polarity of the
Page 296:
f\f\v~/....•••..••,.\,II
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130 Section II: Diagnostic Radiolog
Page 304:
Generator~Single-phase 1-pulse(self
Page 308:
FIGURE 5-34. Automatic exposure con
Page 312:
Therefore, the ourpur exposure incr
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TABLE 5-4. ROOT-MEAN-SQUAREVOLTAGE
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Energy (J) = Root-mean-square volta
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Previous exposures must also be con
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1,6001,400OJc 1,200'00::::l0 1,000I
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FIGURE 6-1. The basic geometry of p
Page 336:
Consideration of Equation 6-4 revea
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FIGURE 6-5. A scanning electron mic
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screenx-rays1x-rays1x-rays1emulsion
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the use of dye is to design a phosp
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\20 em Patient ~•...70oUGd2~S ~ .
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emulsion film has a total mass thic
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axis), and the film OD at zero x-ra
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2:' 2.5 ---'w c~ 2.0~ 1.5~ Q.o 1.00
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exposure times the exposure rate is
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.--... 3000?ft::- 1000(J)~C 300 -o(
Page 376:
504540~35 ..•..•.•en 30jg 25c
Page 380:
TABLE 6-3. ADDITIONAL PARAMETERS (N
Page 384:
Most artifacts associated with the
Page 390:
Film is a unique technology, born o
Page 394:
and eventually reach the film emuls
Page 398:
film outdryerFIGURE 7-4. The functi
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ActivatorClearing(hypo)agentHardene
Page 406:
guide shoes in the developer tank.
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film transportrollerspolygonalmirro
Page 414:
FIGURE 7-10. The functional compone
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manufacturer and the phosphor emplo
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and craniocaudal views, are routine
Page 428:
CompressionpaddleGridScreen-filmPho
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Chestwall2:' 100%·00cQ)Cc-§ 50%..
Page 436:
with little contribution to the ima
Page 440:
energies not useful in forming the
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120100NE.€80UJc:.90 60.J::.0-'" 4
Page 448:
40E 35
Page 452:
ference of 10% to 15% positive (gre
Page 456:
Scatter to Primary ratio:0.8 - 1.0S
Page 460:
Grids impose a dose penalty to comp
Page 464:
ation exposure is also necessary to
Page 468:
4fastLate 80'spresent~ 3·00 c:Q)0r
Page 472:
FIGURE 8-23. Film processor testing
Page 476:
4.54.0Cii 3.5~C 3.08 2.5C:.@ 2.0~ 1
Page 480:
x-shift2z: receptorto lesiondept.~_
Page 484:
megabytes, and four times that for
Page 488:
TABLE 8-7. AVERAGE GRANDUlAR DOSE I
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226 Section II: Diagnostic Radiolog
Page 496:
FIGURE 8-30. A: The mammography acc
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Fluoroscopy is an imaging procedure
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inputwindowvacuumbottleinputscreenF
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Ii\ !\,-.l,,....,. l'..-t-J..•.vF
Page 514:
For cardiac imaging, by comparison,
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partial-silveredmirrorinfinitefocus
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local variations in light intensity
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Photo-Spot CamerasA photo-spot came
Page 530:
Many fluoroscopists practice aggres
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the image constant at the monitor.
Page 538:
Field of View:cm (inches)14 (5.5)20
Page 542:
In the angiographic setting, the ta
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50eaJ enaJ::> aJ0 cen -'"len en"0"0
Page 550:
IMAGE QUALITYImage quality is a gen
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trast in the resultant image) can o
Page 558:
.a- 2.5.iij~ 2.0c~ 1.5ao 1.02 3Expo
Page 562:
246 8Tissue Thickness (cm)FIGURE 10
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puter to the display hardware itsel
Page 570:
FIGURE 10-12. A: An isometric plot
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tor, it will appear life size (magn
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of the resolution performance of th
Page 582:
wave serves as an input to a hypoth
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11111111 11I1 111I 1111 1111--FIGUR
Page 590:
c 40f:5!:c 30o'0t 20 .cE:lZ120 140H
Page 594:
A,0.0 0.2 0.4 0.6 0.8 1.0Position (
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In all medical x-ray imaging, we wa
Page 602:
FIGURE 10-30. A circular signal is
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to the calculation of the noise pow
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less than twice per cycle, and it w
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The sine-shaped MTF for a detector
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not just one feature or number, but
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--normal••••• m •••
Page 628:
for each exposure. The imaging plat
Page 632:
about 85% BaFBr and 15% BaFI, activ
Page 636:
charge packetsmove in unisonreadout
Page 640:
Flat panel detector systems make us
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wires in Fig. 11-8), and the gate i
Page 648:
scintillator(CSI)~TFT detector elem
Page 652:
individual images from each camera
Page 656:
When film-screen image receptors ar
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FIGURE 11-13. The raw and corrected
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If I'(x,y) > Thigh, then I'(x,y) =
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When the 3 X 3 kernel containing al
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same time, and to archive images us
Page 676:
FIGURE 12-1. The motion ofthe x-ray
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larger tissue volume is exposed. Th
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cient of jivessel, the mask image (
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3E+3 2E+3I3E+3Ẹ E 2E+3~ 2E+3 ~Ql~
Page 694:
Computed tomography (CT) is in its
Page 698:
FIGURE 13-2. A pixel (picture eleme
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--I.....Lobject--I.....L-imageacqui
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Pencil BeamGeometryFan BeamGeometry
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ll:llIidlllidlllielltll:llIi:tlloll
Page 714:
FIGURE 13-11. A schematic diagram o
Page 718:
FIGURE 13-13. Multiple detector arr
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cally 0.10 to 0.20 mm on each side.
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5 to 10 mm with the same x-ray tech
Page 730:
Pitch is a parameter that comes to
Page 734:
FIGURE 13-20. The sinogram is an im
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The raw data acquired by a CT scann
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lesion~CT# I !, ,c... Z ~ominal sli
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esents an individual measurement of
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in the data, but in x-ray images th
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titative CT techniques can be used
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W = 4095, L = 1048 W=600,L=-100 W =
Page 762:
FIGURE 13-34. A volume-rendered ima
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ent than in radiography, because of
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TABLE 13-1. TYPICAL COMPUTED TOMOGR
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the high SNR detected in the thinne
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Patient motion: If there is involun
Page 782:
FIGURE 13-40. A: A beam-hardening a
Page 786:
Nuclear magnetic resonance (NMR) is
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conceptualized as the number of mag
Page 794:
Spinning proton withdipole magnetic
Page 798:
TABLE 14-3. GYROMAGNETIC RATIO FOR
Page 802:
FIGURE 14-6. Longitudinal magnetiza
Page 806:
From the classical physics viewpoin
Page 810:
ways. A 90-degree angle provides th
Page 814:
spin-spin interactions by themselve
Page 818:
:~Med~;:rtV~~OUS:Small, aqueous:~ ~
Page 822:
FatLiverMuscleWhite matterGray matt
Page 826:
90 0pulse180 0pulse180 0pulse180 0p
Page 830:
The equation shows that for the sam
Page 834:
Mz 1,Longitudinal recovery (T1 )Ima
Page 838:
TABLE 14-5. SPIN ECHO PULSE SEQUENC
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tization when a short TI is used. T
Page 846:
FIGURE 14-28. Magnetic resonance se
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generated with smaller flip angles
Page 854:
FIGURE 14-31. A steady-state gradie
Page 858:
Even-echo rephasing is a phenomenon
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loss than those of lesser water mob
Page 866:
Price RR. The AAPM/RSNA physics tut
Page 872:
Linear changein magnetic fieldSuper
Page 876:
TABLE 15-1. PRECESSIONAL FREQUENCY
Page 880:
- 0-40 -30 -20 -10 10 20 30 40(1)-0
Page 884:
Frequency Encode GradientThe freque
Page 888:
Position of the spins in the third
Page 892:
15.2 "K-SPACE" DATA ACQUISITION AND
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RF pulses~ _J!~e_a~ Yd~h_qi!.t~r:e_
Page 900:
peripheral areas (Fig. 15-16E) isol
Page 904:
Acquired data:% matrix + 1 lineD-f
Page 908:
TR180 0excitation90 0readout180 0re
Page 912:
"effective" echo time occurs at a t
Page 916:
15.3 THREE-DIMENSIONAL FOURIER TRAN
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Signal·to-NoiseRatioThe signal-to-
Page 924:
image acquisition. Eddy currents ar
Page 928:
of the blood. Since the detectable
Page 932:
YTExcitation I-- I#1TExcitation 1--
Page 936:
Magnetic susceptibility can be quit
Page 940:
computeroptimizedprofile"rectangula
Page 944:
since the evolution of the echo sig
Page 948:
3-4 ppm difference, fat-5 ppm diffe
Page 952:
Frequency synthesis of object (harm
Page 956:
15.7 INSTRUMENTATIONMagnetThe magne
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Permanent magnets rely on the ferro
Page 964:
Superconductive magnets produce ext
Page 968:
TABLE 15-2. RECOMMENDED QUALITY CON
Page 972:
TABLE 15-3. MAGNETIC RESONANCE IMAG
Page 978:
Ultrasound is the term that describ
Page 982:
"Plane-piston"mechanicaldisplacemen
Page 986:
FIGURE 16-3. Ultrasound wavelength
Page 990:
Sound energy causes particle displa
Page 994:
TABLE 16-3. ACOUSTIC IMPEDANCE, Z =
Page 998:
TABLE 16-4. PRESSURE AND REFLECTION
Page 1002:
echoes typically have similar echo
Page 1006:
The echo intensity is one hundredth
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Equilibrium:No surface chargeEquili
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i] ,A0.8 0.9 10 1.1flf O"[:f: L~0.5
Page 1018:
then filled with an epoxy resin to
Page 1022:
Transducer elementDiameter, dLength
Page 1026:
and 36.4 cm, respectively. Lateral
Page 1030:
SummedSignalFIGURE 16-18. Dynamic r
Page 1034:
amplitude of the peripheral transdu
Page 1038:
Phased arraytransducerLateral -reso
Page 1042:
iUnderstanding ultrasonic image for
Page 1046:
teristics of the transducer element
Page 1050:
Pre-amplificationand swept gainI Di
Page 1054:
OJ'0~BeforeTGC 0.E
Page 1058:
---------_+-Time...................
Page 1062:
FIGURE 16-33. Articulating arm B-mo
Page 1066:
eturning echoes. The ultrasound bea
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apher must consider the compromises
Page 1074:
Ultrasound Contrast AgentsUltrasoun
Page 1078:
Harmonics build in relative intensi
Page 1082:
Linear components(tissue)Non-linear
Page 1086:
Mechanical:Transducer~Rotating acou
Page 1090:
(width and height, respectively) of
Page 1094:
(i\ I)ThroughtransmissionLow _" Hig
Page 1098:
MirrorimageFIGURE 16-44 (continued)
Page 1102:
error by neglecting the velocity of
Page 1106:
shift measurement because a narrow
Page 1110:
Each Doppler pulse does not contain
Page 1114:
t IE«-f maxo~ __ Frequency(Velocit
Page 1118:
AliasingAliasing, as described earl
Page 1122:
speed of sound. Measured velocity (
Page 1126:
6E0.s:::. 8-a.low scatter targets d
Page 1130:
horizontal targets (lateral resolut
Page 1134:
ultrasound used to enhance image qu
Page 1138:
Thermal and mechanical indices of u
Page 1142:
10'" ..!2 ES>-+"'"00 cQ)E+"'0.110 1
Page 1148:
cylindrical cable with a central co
Page 1152:
On most networks today, when two no
Page 1156:
sic (nonswitched) forms of Ethernet
Page 1160:
lion distinct addresses. The first
Page 1164:
Typical data transfer rates of mode
Page 1168:
Picture Archiving and Communication
Page 1172:
TeleradiologyTeleradiology can prov
Page 1176:
DigitalImageFIGURE 17-6. Charge-cou
Page 1180:
serving nuclear medicine, whereas a
Page 1184:
Multi-terabyteArchiveFIGURE 17-8. R
Page 1188:
computer or by specialized hardware
Page 1192:
Standard viewboxMammography viewbox
Page 1196:
An application program on the works
Page 1200:
CollimatorlensiBeammodulatorFIGURE
Page 1204:
An example of a fault-tolerant stra
Page 1210:
NUCLEARMEDICINE
Page 1216:
TABLE 18-1. UNITS AND PREFIXES ASSO
Page 1220:
II25 ~--------20 : :III12.5 . - - -
Page 1224:
Beta-minus (~-) decay, or negatron
Page 1228:
When they lose all (or most) of the
Page 1232:
Each radionuclide's decay process i
Page 1236:
MOL YBDENUM-99Beta-Minus DecayT1/2
Page 1240:
FLUORINE-18Electron Capture and Bet
Page 1244:
Alternating {_Voltage ~Magnetic fie
Page 1248:
FIGURE 19-3. Hospital-based cyclotr
Page 1252:
The total energy released by the nu
Page 1256:
Radiation DetectorsNeutron Beam Hol
Page 1260:
ProductionmethodNuclear reactor Nuc
Page 1264:
that shows details of the generator
Page 1268:
10087.5..•..•.-c::Q)u•..Q)D.-
Page 1272:
TABLE 19-3. PHYSICAL CHARACTERISTIC
Page 1276:
septa (see Chapter 21). A radiophar
Page 1280:
mediated by the energy-dependent Na
Page 1284:
depending on the solvent, either re
Page 1288:
(ii) The total dosage (i.e., admini
Page 1292:
nal. For other applications, photog
Page 1296:
are often operated in current mode
Page 1300:
20.2 GAS-FILLED DETECTORSBasic Prin
Page 1304:
Because gas multiplication does not
Page 1308:
is extensively used in biomedical r
Page 1312:
constituent elements and their low
Page 1316:
visiblelight -...photon+photocathod
Page 1320:
In crystalline materials, electrons
Page 1324:
of the diode and the negative polar
Page 1328:
FIGURE 20-13. Function of asingle-c
Page 1332:
Nal (TI)crystal..-r--..IIIIPMT...-r
Page 1336:
Spectrum of Cesium-137The spectrum
Page 1340:
with the emission of a 140.5-keV ga
Page 1344:
FIGURE 20-22. Pulse pileup.The dash
Page 1348:
distance, typically 20 to 25 cm, fr
Page 1352:
its samples ofI-125 and Co-57 to ac
Page 1356:
Dose Calibrator Quality AssuranceBe
Page 1360:
Two measures of the central tendenc
Page 1364:
4Number of SuccessesFIGURE 20-28. B
Page 1368:
For example, a counr of 853 is obra
Page 1372:
entering the standard deviations fr
Page 1376:
dose to the patient, nearly all nuc
Page 1380:
PhotomultipliertubesLucite light pi
Page 1384:
PulsesfromindividualPMTsAnalogJ....
Page 1388:
the object is moved yet farther fro
Page 1392:
TABLE 21-1. COMPARISON OF SINGLE·P
Page 1396:
Some types of collimators magnify (
Page 1400:
the product of three factors: the c
Page 1404:
() 0.5c CD"0If=CD.>
Page 1408:
TABLE 21-3. THE EFFECT OF INCREASIN
Page 1412:
6.4 mm at 10 cm from the collimator
Page 1416:
Digital'positionZ correctionlookup
Page 1420:
two ways that scintillation cametas
Page 1424:
quency of this testing depends on t
Page 1428:
ufacturers incorporate a computer f
Page 1432:
FirstimageSecondimageThirdimageFour
Page 1436:
pool image sequence, using T c-99m-
Page 1440:
adionuclides in patients, using a p
Page 1444:
mator, which never enjoyed wide acc
Page 1448:
heads of a SPECT system produced id
Page 1452:
0.50.4CD"0:e0.3c.E 0.2
Page 1456:
No AttenuationCorrectionAttenuation
Page 1460:
camera heads that revolve about the
Page 1464:
In planar nuclear imaging, radioact
Page 1468:
FIGURE 22-10. Image of a cylinder f
Page 1472:
TABLE 22-1. RECOMMENDED SCHEDULE FO
Page 1476:
Design and Principles Of OperationA
Page 1480:
2 by 2 arrayof PMTs~Slits cut intoB
Page 1484:
To detect coincidences, the times o
Page 1488:
DetectorelementsSeptalcollimatorrin
Page 1492:
J......... ······~~~~~I thiC
Page 1496:
FIGURE 22-23. Attenuationin PET. Th
Page 1500:
511-keV collimators and because the
Page 1504:
A system provided by another vendor
Page 1508:
Madsen MT. The AAPM/RSNA physics tu
Page 1514:
It is incumbent upon all individual
Page 1518:
(5 mrad/hr), which is approximately
Page 1522:
combustible fuels, including coal a
Page 1526:
TABLE 23-3. AVERAGE ANNUAL OCCUPATI
Page 1530:
TABLE 23-6. ANNUAL GENETICALLY SIGN
Page 1534:
with conventional x-ray film, radia
Page 1538:
FIGURE 23-3. A small chip of LiF (r
Page 1542:
Method Measures Useful rangePermane
Page 1546:
FIGURE 23-6. Portable ion chamber.
Page 1550:
Inverse Square LawE 2 = E 1 (0 1 /0
Page 1554:
adherence to the methods in NCRP re
Page 1558:
espective distances to the point in
Page 1562:
Exposure per week contributed by th
Page 1566:
Primary, scatter, and leakage radia
Page 1570:
IStairwaygQlc..>c19'" 00Waitingarea
Page 1574:
e the minimal thickness recommended
Page 1578:
Personnel Protection in Diagnostic
Page 1582:
TABLE 23-14. EXPOSURE RATE CONSTANT
Page 1586:
Filtration of the polychromatic x-r
Page 1590:
out ABC. Some systems have a high e
Page 1594:
the physician with the ability to m
Page 1598:
nologist in the correct selection o
Page 1602:
ination should remove their protect
Page 1606:
labeled with 1-131. 1-131 decays wi
Page 1610:
Phosphorus-32 is used for the radio
Page 1614:
clides are the "Standards for Prote
Page 1618:
TABLE 23-18. NUCLEAR REGULATORY COM
Page 1622:
National Council on Radiation Prote
Page 1628:
section 3.5). The old term for ener
Page 1632:
TABLE 24-3. ABSORBED DOSES TO SELEC
Page 1636:
Medical x-ray imaging procedures su
Page 1640:
mAs, and the distance from x-ray so
Page 1644:
FIGURE 24-3. The geometry fordeterm
Page 1648:
FIGURE 24-4. Illustration ofSourceo
Page 1652:
FIGURE 24-6. The cumulated activity
Page 1656:
TABLE 24-9. VARIABLES IN THE MIRD S
Page 1660:
not currently require manufacturers
Page 1664:
TABLE 25-1. DETERMINANTS OF BIOLOGI
Page 1668:
Radia~?/ 1'{"l20 H+ ow\ Ionization
Page 1672:
cific ionization (i.e., ionization
Page 1676:
chromatid aberrations. Unlike chrom
Page 1680:
10~n ,,,,,,C), ,,I:Dq'S; 1.0 ------
Page 1684:
ClC 1.0oS;o~::JCJ)~G)0-0C0:;:;(JCIS
Page 1688:
mediated through free radical produ
Page 1692:
Radiationdose~~ANSYS~Dose too---. D
Page 1696:
to normal within 2 to 3 months. If
Page 1700:
dose delivered over a protracted pe
Page 1704:
diseases such as ataxia telangiecta
Page 1708:
The stages of the neurovascular syn
Page 1712:
Most of the radiation-induced biolo
Page 1716:
adiation, such as radiofrequency ra
Page 1720:
TABLE 25-7. SUMMARY OF MAJOR EPIDEM
Page 1724:
,.,,. ,,.,,.,,.ỊI"", ,I, IIIIIII"
Page 1728:
Radiationexposure1-",,II, II,,III,
Page 1732:
the overall risk and relative proba
Page 1736:
times greater risk for development
Page 1740:
Estimating Genetic RiskThe genetica
Page 1744:
sure, owing principally to the rela
Page 1748:
1/3 for mice). Nevertheless, develo
Page 1752:
Numberoccurring fromnatural causesE
Page 1756:
Prenatal death(Some survivors,no in
Page 1762:
APPENDICES
Page 1768:
OriginalVector (V)InternationalSyst
Page 1772:
PotentialEnergyPotential energy is
Page 1776:
When a charged particle is placed i
Page 1780:
The joule is a rather large unit of
Page 1784:
The band theory of solids explains
Page 1788:
FIGURE A-7. A spinning charge has a
Page 1792:
Magnetic field moving towards wire
Page 1796:
Static magnetic fieldRotating curre
Page 1802:
PHYSICAL CONSTANTS, PREFIXES,GEOMET
Page 1806:
Appendix B: Physical Constants, Pre
Page 1810:
MASS ATTENUATIONCOEFFICIENTS AND SP
Page 1814:
Appendix C: Mass Attenuation Coeffi
Page 1818:
Page 1822:
Page 1826:
C.6 MAMMOGRAPHY SPECTRA: Rh/RhTABLE
Page 1830:
Appendix Co' Mass Attenuation Coeff
Page 1834:
RADIOPHARMACEUTICALCHARACTERISTICS
Page 1838:
1251Albumin (ONI) IV N/A -20 mL blo
Page 1842:
153Sm Lexidronam, also IV over a 1-
Page 1846:
-90% of dose excreted in 3 hr. Prep
Page 1850:
99mTc-basedmyocardial perfusion age
Page 1854:
99mTcMacroaggregated 0.16 ts 0.0161
Page 1858:
TABLE D-4. ABSORBED DOSE ESTIMATES
Page 1864:
914 Section V: AppendicesMedical Ph
Page 1868:
ASCII. See American Standard Code f
Page 1872:
DDAC. See Digital-to-analog convert
Page 1876:
Electronic switchltimer, exposure t
Page 1880:
Image magnification, spatial resolu
Page 1884:
Magnetic resonance imaging (contd.)
Page 1888:
Phased array, ultrasound, 490Phosph
Page 1892:
Radiation detection (contd)gas-fill
Page 1896:
Shoe marks, processor artifacts, 18
Page 1900:
Two dimensional multi planar acquis
Page 1906:
"Nope '" no sign of YOur kitten, Ma
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