صيانة جهاز التصوير بالموجات فوق الصوتية من صفحة 78
Chapter 5: Ultrasound (US) imaging
Objectives
Introduction
5.1) Medical Uses
5.1.1) Internal organ examination
5.1.2) Specialized organ examination
5.1.3) Doppler ultrasound
5.2) Ultrasound types
5.2.1) 2D Ultrasound
5.2.2) 3D Ultrasound
5.2.3) 4D Ultrasound
5.2.4) Doppler Ultrasound
5.3) Ultrasound equipment and parts
5.3.1) Transducer probe
5.3.2) Central processing unit (CPU)
5.3.3) Transducer pulse controls 4
5.3.4) Other parts
5.4) Working mechanism
5.5) Ultrasound transducer
5.5.1) Transducer Components
5.5.2) Transducer Bandwidth
5.5.3) Beam geometry and lateral resolution
5.5.4) Axial resolution
5.5.5) Transducer focusing
5.6) Transducer arrays
5.6.1) Linear arrays
5.6.2) Convex arrays
5.6.3) Phased arrays
5.6.4) Beam-forming and steering via pulse transmission for phased array
5.6.5) Analogue and digital receiver beam-forming for phased arrays
5.6.6) Time gain compensation
5.6.7) Multi-dimensional arrays
5.6.8) Annular arrays
5.7) Testing
5.7) Maintenance
5.7.1) Loss of part of the image or flickering
5.7.2) Excess noise
5.7.3) Gross image deterioration
5.7.4) Care of the probe
5.7.5) The electronics block
5.7.6) Change in image quality
5.7.7) Mains voltage fluctuation
5.7.8) Recorded data
5.7.9) Keyboard and front panel
5.7.10) Controls
5.7.11) Power system
5.7.12) Monitor
5.7.13) Small or wavy image
5.7.14) Equipment repair procedures
5.7.14.a) Display Replacement
5.7.14.b) Control Panel Subassembly Replacement
5.7.14.c) Main System Disassembly
5.7.15) Preventive maintenance
5.7.16) Machine inspection checklist
5.8) Safety guidelines in ultrasound imaging
5.8) Artifacts in ultrasound imaging

OBJECTIVES
Introduction Medical uses Ultrasound Types Ultrasound equipment & Parts Working mechanism Single element ultrasound transducers
• Transducer bandwidth
• Beam geometry and lateral resolution
• Axial resolution
• Transducer focusing
Transducer arrays
• Linear arrays
• Phased arrays
• Beam-forming and steering via pulse transmission for phased arrays
• Analogue and digital receiver beam-forming for phased arrays
• Time-gain compensation
• Multi-dimensional arrays
• Annular arrays
Testing Maintenance Safety guidelines in ultrasound imaging Artifacts in ultrasound imaging

What is ultrasound
Ultrasound imaging
Application of ultrasound in Medicine
How ultrasound works
Uses of ultrasound
Ultrasound imaging PDF
Medical ultrasound
Indications of ultrasound

What is ultrasound imaging used for?
Is an ultrasound considered Imaging?
What type of scan is an ultrasound?
How do ultrasounds work?

صيانة أجهزة الأشعة
Maintenance of X ray Devices
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شرح المهندس مجدي يونس طه
بمستشفيات جامعة طنطا والمعهد الفني الصحي بإمبابة
الفرقة الثانية الترم الثاني شعبة الأشعة والتصوير الطبي المعاهد الفنية الصحية
Radiology and Medical Imaging Division - Second year