Test Equipment for Radiology and CT Quality Control

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Education HC Safety Code 35 QC for Radioscopy

 

  

Safety Code 35 Summary

Quality Control Procedures

Radioscopy

(Fluoroscopy and Angiography)

 

 

For more detail about each quality control procedure

select the relevant link in the tables below

 

 

Daily Quality Control Tests

 

Quality Control Procedures

Radioscopic Systems

 

 

Equipment Warm-up

D1

Meters Operation

D2

Equipment Conditions

D3

System Movements

D4

Darkroom Cleanliness

D5

Film Processor Function

D6

Overall Visual Assessment of Electronic Display Devices

D7

 

Normal Font – Required Tests               Italics - Recommended

 

 

 

Abbreviations used

 

FS Film-Screen

CR Computed Radiography

DR Digital radiography

RS Radioscopy (Fluoroscopy and Angiography)

SF Spot Film or Acquisition

 

 

 

Quality Control Procedures

Link

Radioscopic System

Weekly Quality Control Tests

Visual Inspection of Cleanliness of Imaging Systems

W1-RS

 

Viewbox Condition

W2

Cleanliness, luminance

Laser Film Printer Operation

W3

 

Digital Subtraction Angiography System Performance

W7

Use phantom to check consistency (W7)

Monthly Quality Control Tests

 

 

Electronic Display Device Performance

M6

Display pattern such as SMPTE on all image display stations

Laser Film Printer Operation

M7

- Print pattern such as SMPTE

- Check for 0/5% and 95/100% patch visibility

- Measure OD of 10% to 90% patches

- No artifacts or geometrical distortion greater than 1mm

Quarterly Quality Control Tests

 

 

Collimator Operation

Q1

Check motions

Interlocks

Q2

Check no radiation in park position

Table Angulation and Motion

Q3

Check smooth operation

Compression Devices Operation

Q4

Check function

Chronometer Operation

Q5

Check timer with external timer

Protective Devices

Q6

Check lead skirts etc for cracks

Park Position Interrupt

Q7

Check no radiation possible in park position

 

Abbreviations used

 

FS Film-Screen

CR Computed Radiography

DR Digital radiography

RS Radioscopy (Fluoroscopy and Angiography)

CT Computed Tomography

SF Spot Film or Acquisition

 

Table 21:  Annual Quality Control Tests

 

Quality Control Procedures

Link

Radioscopic System

Performance

 

 

Safelight Test

Y1

If film is used

Film/Screen Contact

Y2

If film is used

Accuracy of Loading Factors

Y3-RS

kVp; mAs Linearity for spot film/acquisition mode

Radiation Output Reproducibility

Y4-RS

Reproducibility for spot film/acquisition mode

Radiation Output Linearity

Y5-RS

Output with mAs for spot film/acquisition mode

X-ray Beam Filtration

Y6-RS

HVL for spot film/acquisition mode

X-ray Field and Light Field Alignment

Y8-9-RS

Congruency of x-ray beam and light field edges

X-ray Beam Collimation

Y8-9-RS 

Light and X-ray field alignment

Image Quality

 

 

Grid Performance

Y10-RS

Check uniformity and movement of grid

Uniformity and Artifacts

 

Spatial Resolution

Y15

Line-pair or Leeds phantom

Contrast Detectability

Y16-RS

Leeds phantom 

Dose

 

 

Phantom Dose Measurements

Y18-RS

Measure dose at surface of standard phantom eg 20 cm PMMA

Typical Image Intensifier Air Kerma Rate

Y19

eg 20 cm PMMA

Maximum Image Intensifier Air Kerma Rate

Y20

With detector blocked by lead

Automatic Intensity Control

Y21

Tracking of detector dose with phantom thickness

Other

 

 

Viewboxes

Y26

Check luminance, uniformity, homogeneity, ambient light

Electronic Display Device Performance

Y27

All clinical workstations must be calibrated  for luminance, distortion, resolution and noise (Y27)

Integrity of Protective Equipment

Y28

Lead aprons, integral shielding

General Preventive Maintenance

Y29

As per manufacturer

DAP Meter

Y30

Calibrate if fitted