PEPconnect

Care Dose 4D

CARE Dose 4D is Siemens' technology for automated exposure control. It optimizes dose and helps deliver the desired diagnostic image quality across a broad spectrum of patient sizes, ages, exam types and clinical indications. This presentation will give you a comprehensive look at CARE Dose 4D - what it does, how it works, and tools you can use to generate the most diagnostic images at the most optimal dose to your patient.

Welcome to the CARE Dose 4D web-based training. CARE Dose4D Automated Exposure Control Optimized Dose Consistent image quality across all patients   Upon successful completion of this course you will be able to: Explain attenuation Explain the purpose of Quality reference mAs Identify the importance of the Topogram in automatic dose modulation Identify CARE Dose 4D customization features Identify pediatric considerations for image quality and dose Features mAs  automatically adapted to patient size Real-time dose adaptation in multiple planes Benefits Ease of use in protocol selection Optimal diagnostic image quality in every slice Lowest possible dose levels   In theory Dose must increase proportionally to size to maintain constant noise Increased size = increased dose In practice Excessive noise for peds Excessive dose for obese patients Exceed output limits of scanner     CARE Dose4D used three methods of adapation simultaneously: Dose adaptation based on current patient size - Topogram Angular modulation in the X/Y axes Z-axis modulation   Average Patient size Five Red Dots = ideal image quality Very Large Patient We still want Five Red Dots CARE Dose 4D Automatically adapt the dose that is necessary to give us the same image quality - FIVE RED DOTS - regardless of our patient's size     What is a pediatric patient? For head - patients < 6 years old For body - patients < 55kg For pediatric patients CARE Dose 4D dose curves may be changed to decrease/increase dose increase/decrease image noise     Automatic Exposure Control Combines three adaptation methods to optimize image quality at the lowest dose level Tube current adapted to patient size Z-axis attenuation Angular attenuation You should now be able to Explain attenuation Explain the purpose of Quality reference mAs Identify the importance of the Topogram in automatic dose modulation Identify CARE Dose 4D customization features Identify pediatric considerations for image quality and dose Please select the Assessment page to complete the course. Effective mAs values are also modulated automatically in the patient's long axis (Z-axis) for body parts of varying thickness. Defines the desired image quality - or noise value - for a protocol for an averaged sized patient Average sized patient = 70 - 80kg     Examples Comparing average eff. mAs applied for a routine neck scan for average and obese patients.     Examples Comparing average eff. mAs applied for a routine thorax scan for average and obese patients     Examples Comparing average eff. mAs applied for a routine shoulder scan for average and obese patients.       Consistent IQ for Pediatric and Adult Patients CARE Dose4D modulates normally Curves can be moved towards "strong" = more aggressive modulation = lower dose for smaller patients       Reduced Dose for All Pediatric Patients Lower Quality reference mAs Reduces Dose Reduces Image Quality Noisier, diagnostic images       Topograms are used for: Planning scan ranges Estimating patient size and subsequently necessary dose Called Scout, Pilot, Scanogram, Surview by other vendors Siemens uses Topogram to calculate dose and plan scan ranges Patient centering is critical Isocenter Incorrect positioning can lead to under- or over-irradiation Patient Too High in Gantry Patient image magnified Patient size over-estimated May result in more dose/over irradiation May affect image quality     Patient Too Low in Gantry Patient image minified Patient size under-estimated May result in less dose/under irradiation May affect image quality     Iso-center positioning of patient helps ensure correct representation of true patient size.     If the scan range exceeds the Topogram length: The dose calculated for the end of the Topogram will be continued through the end of the range Dose may not be appropriate Image quality could be affected CARE Dose4D Topograms Scans designed for single topogram Default topogram orientation should be used for last topogram performed Change Patient Position button should be used just prior to acquiring a second topogram     Customizing CARE Dose4D dose curves Body regions Different sized patients   CARE Dose 4D dose curves may be customized for patients of a specific body habitus Child Adult Slim Adult Obese CARE Dose 4D dose curves may be cusomized for specific body parts: Brain Neck Shoulder Thorax Abdomen Pelvis Spine Osteo Vascular Head Vascular Body Runoff Cardio Respiratory     CARE Dose 4D dose curves are based on a 70-80 kilogram reference patient: Using stronger curves for patients larger than 70-80 kg increases dose Using stronger curves for patients smaller than 70-80 kg decreases dose   CARE Dose 4D calculates appropriate dose for patient size and exam type Scanner output is limited to system capabilities

  • Care Dose 4D