Fluke 57-402 User Manual

Nuclear Associates

CLEAR-Pb

Transparent X-Ray Compensation Filters

For Spinal Radiography

User Manual

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Table of Contents

Section 1: General Information ................................................................. 1-1

1.1 Introduction .................................................................................................. 1-1

Section 2: Applications & Specifications ........................................................ 2-1

2.1 Applications & Specifications ....................................................................... 2-1

Section 3: Filter Holder Mounting Instructions ................................................ 3-1

3.1 Filter Holder Mounting Instructions .............................................................. 3-1

Section 4: Filter Positioning (General) ............................................................ 4-1

4.1 Filter Positioning (General) .......................................................................... 4-1

Section 5: Detailed Filter Positioning.............................................................. 5-1

5.1 AP Full Spine 13 cm and Under (Small to Average Patient) (72” FFD) ....... 5-1

5.2 AP Full Spine 14-19 cm (Above Average Patient) (72” FFD)....................... 5-2

5.3 AP Full Spine 20-25 cm (Large Patient) (72” FFD) ...................................... 5-4

5.4 AP Full Spine Over 25 cm (Very Large Patient) (72” FFD) .......................... 5-5

5.5 AP Lateral Cervical Spine (72” FFD)............................................................ 5-6

5.6 Lateral Thoracic Spine (40” FFD) ................................................................ 5-7

5.7 Lateral Full Spine (Single Exposure)............................................................ 5-8

5.8 AP Thoracic Spine (40” FFD)....................................................................... 5-9

5.9 AP Erect Abdominal Examination (40” FFD).............................................. 5-10

5.10 Lateral Lumbar Spine (L5-S1) Interspace (30” FFD) ................................. 5-11

5.11 Slim Lateral Spot for C7 (30” FFD) ............................................................ 5-12

5.12 Shoulder (40” FFD).................................................................................... 5-13

5.13 Ribs (40” FFD) ........................................................................................... 5-14

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General Information

Introduction

Section 1

General Information

1.1 INTRODUCTION

CLEAR-Pb Compensation Filters are made of a lead-plastic material that is 30% lead by weight. Since lead is an efficient absorber of x-rays, the filters will attenuate the x-ray beam. By varying the shape and thickness of the filters, many combinations of filtering action can be achieved...from almost complete attenuation to full penetration. (See Figure 1-1.)

Figure 1-1 Filters Attenuate X-ray Beam to Provide Even Exposure Throughout Image Area

Figure 2-2 Collimator with Filter Holder (57-426) and AP/PA Wedge (57-405) in Place

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Nuclear Associates CLEAR-Pb Transparent

Operators Manual

CLEAR-Pb Filters are transparent and lightweight. By means of our "Quick-Stik" system of magnetic strips on the filters, and a filter holder that slides into the collimator's accessory tray, the filters can be held firmly in place and repositioned instantly. (See Figure 2-2) You can see and adjust the area and/or degree of filter coverage as necessary. Last-minute positioning checks of the patient, x-ray collimator, and filters are possible, thanks to the filter transparency. Selected-area beam shaping has never been so simple and effective.

CLEAR-Pb Filters should be used with a rare-earth film/screen combination to improve image quality and keep patient exposure to a minimum. CLEAR-Pb Compensation Filters are not speed intensifying screens. Consult your film manufacturer for the proper film/screen combination. This instruction manual provides typical suggested procedures for using CLEAR-Pb Compensation Filters. However, individuals may modify this technique to suit their own requirements.

compatible with gradient

1-2

Applications and Specifications

Section 2

Applications & Specifications

2.1 Applications & Specifications

The filters and accessories are available individually or as a set (57-445). The 57-445 CLEAR-Pb X-Ray Compensation Filter Set includes a multi-purpose AP/PA wedge filter (72" FFD), a lateral cervical filter, a lateral thoracic filter, a pediatric and adult gonad shield, a breast shield assembly, two AP/PA build-up filters (one thick, one thin), a filter holder, and two mounting plates. A 40" FFD AP/PA wedge Filter is optional. Filters purchased individually require a filter holder (56-426) to make them compatible with the xray collimator. One filter holder (with mounting plates) is recommended for each x-ray machine. All Filters have magnetic mounting strips at each end to attach to the matching steel rails on the filter holder.

AP/PA Wedge Filter (72" FFD)

Model 57-405: Size 6 ½” long x 2 ¼” wide x 3/8" thick; weighs 6 oz.

AP/PA Wedge Filter (40” FFD)

Model 57-415: Identical to Model 57-405 except that it is 4-1/8" wide; weighs 10 oz.

Lateral Cervical Filter (72" FFD)

Model 57-406: 6 ½" long x 1 ¼" wide x 3/8" thick; weighs 4 oz.

Lateral Thoracic Filter (72" FFD)

Model 57-407: 6 ½" long x 1 ¼" wide x 3/8" thick; weighs 4 oz.

Breast Shields

Model 57-409: 3" long x 3" wide x 1/8" thick; weighs 2 oz. Will attach to Model 57-426 filter holder with or without the use of a filter (set of 2 pieces).

Build-Up Filter AP/PA (Thin)

Model 57-430: 6 ½" long x 1 ¼" wide x 1/8" thick. Has magnetic tape on one side, steel on the opposite side, to allow filter stacking; weighs 2 oz.

Build-Up Filter AP/PA (Thick)

Model 57-434: 6 ½" long x 1 ¼" wide x 9/32" thick. Has magnetic tape on one side, steel on the opposite side, to allow for filter stacking; weighs 3 oz.

Filter Holder

Model 57-426: Clear plastic, 6 ½" wide x 5 ½" long x ¼" thick. Has two steel rails, 1" wide x 5 ½" long, for positioning filters and shields. Only one filter holder is needed per x-ray machine.

Mounting Plates

Model 57-411: Clear plastic, 9" long x 9" wide x 1/16" thick. Attached to filter holder with screws. Easily cut to fit collimator assembly. Two mounting plates are included with each filter holder assembly.

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Nuclear Associates CLEAR-Pb Transparent

Operators Manual

Gonad Shield

Adult, Model 57-408: 6 ½" long x 1” wide x 1/16" thick. Has a shamrock-shaped, 0.030" thick lead shield made up of three overlapping circles, each ½" diameter; weighs ½ oz.

Gonad Shield

Pediatric, Model 57-444: 6 ½" long x 1" wide x 1/16" thick. Has shamrock-shaped, 0.030" thick lead shield made of three overlapping circles, each ¼' diameter; weighs ¼ oz. Also for imaging sacroiliac region of adult female.

Filter AP/PA

(72” FFD) Model No. 57-405 57-415 57-407 57-406 Applications

Length x Width Max. Thickness Trough Width

Configuration

Filter Materials

Full spine,

AP or PA

AP or oblique

esophagram

Lateral chest

6.5” L x 2.25” W

0.1”

AP/PA

(40” FFD)

Full spine,

AP or PA

6.5” L x 4.125” W

0.1”

Lateral

Thoracic

Lat. full spine

Oblique or AP

esophagram

(obese patients)

Angiography of

neck, lower head

(may need 2

filters)

6.5” L x 1.25” W

0.15”

Lateral

Cervical

Lat. cerv. spine

Lat. full spine

(with 57-407 Filter)

Lateral aortic arch

6.5” L x 1.25” W

0.3”

Plastic

Lead-Plastic

Magnetic Tape

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Applications and Specifications

Filter

Model No. 57-430 57-434 57-409 Applications

Length x Width Max. Thickness

Configuration

Filter Materials

Plastic

Lead-Plastic

Magnetic Tape

Build-Up

(Thin)

Additional

Filtration to even

out density in cervical area.

6.5” L x 1.25” W

0.125”

Build-Up

(Thick)

Additional filtration to even out density

in cervical area.

6.5” L x 4.125” W

0.28”

Breast

Shields

Full-body shielding when imaging the full

spine. Permits vertical and horizontal

adjustment of shielded area.

3” L x 3” W

0.12”

Shield

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Nuclear Associates CLEAR-Pb Transparent

Operators Manual

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