assessment Flashcards
what does SPECT stand for?
single photon emission computerd tomography
why is SPECT your chosen modality
-detailed functional imaging
-great for diagnosing conditions e.g. cardiac issues, neurological and bone disorders.
-widely available radioactive tracers- technetium 99
-adjustable gantry and table designs, accommodate for various patients.
-cheaper and more cost effective
-compact and can be easily integrated into a room
-less extensive shielding compared to PET, and CT hybrids
Why is SPECT more appropriate compared to other modalities, e.g PET?
-PET- Higher resolution and quality images, however not practical for cdc its much larger, requires more extensive shielding.
-requires nearby cyclotron facilities to produce radiopharmaceutical.
-not as cost effective, more expensive.
-installation and ongoing maintenance costs are more expensive.
-in a CDC, advanced features of PET may not be fully utilised, which makes it less cost effective
Why is SPECT more appropriate compared to other modalities, e.g planar scintigraphy
-SPECT has 3d images with multiple projections and diff angles. better spatial resolution, localise abnormalities;
-P.S. only 2d images in a single plane, could have overlapping structures ad reduced diagnostic accuracy.
-P.S suitable for basic imaging needs e.g thyroid and bone scans, lacks depth and detail for complex diagnostics
SPECT- more versatile, e.g tumor localisation and neurological imaging.
why is spect better than spect/ ct hybrid systems
-more expensive and potentially greater maintenance costs
-additional costs for contrast agents
-space constraints- requires more space and renovations
-additional shielding and room modifications
-advanced capabilities may not be needed- less cost effective.
what are your top three requirements?
-radiation shielding and storage - safety for pts and staff, minimise exposure and comply with safety regulations
-compact design- fit spatial constraints.
-multi detector capability- enhances image quality and reduces scan time.
justify why radiation shielding and storage is one of your top requirements
-SPECT uses radio tracers that emit gamma radiation, doses are low but repeated or high exposure can pose health risks. Radiation shielding minimises risk to patients and vulnerable groups e.g. elderly and children.
-staff safety
-compliance with safety regulations, limits on exposure for patients and staff.
-high quality shielding demonstrates commitment to patient and staff safety- builds public confidence.
justify why compact design is one of your top requirements
-may be spatial constraints in CDC, must fit without compromising functionality and workflow.
-smaller scanner allows better utilisation of space, e..g. patient preparation area, radioisotope storage - maximise use of available space
-compact equipment easily adapted and relocated in future- more cost effective choice
-more room for the patient to feel comfortable and to add features like seating and ambient lighting to enhance pt experience.
-
justify why multi detector capability Is one of my top requirements
-capture more data In a short amount of time- reduces scan times, accommodate more patients each day, improve waiting times.
-better spatial resolution and sensitivity, leads to higher quality images- enhancing diagnostic accuracy.
-provide wider range of imaging studies e.g. multi-isotope imaging. offer a broader range of diagnostic services- meet diverse patient needs
overall enhances diagnostic capabilities, efficiency, and versatility of SPECT scanner.
what is a multi detector capability system
feature that uses multiple detectors to capture images from different angles / positrons around the patient.
what role does the RPA play?
-ensures compliance with safety regulations (IRR).
-oversees safe storage of radioactive materials
-implement radiation protection policies, dosimetry.
-monitoring and recording radiation exposure levels, protect staff from long term health risks and ensure pt safety.
-conduct regular audits and inspections
How will the radioactive materials be stored? -
-radioisotopes stored in lead lined cabinets blocks gamma radiation- should be securely locked and labeled with radiation warning signs
-specific area of the room- clearly marked and separated from patient and staff pathways to minimise exposure risks
-area should be well ventilated , directs airflow away from occupied areas.
-adequate shielding e.g lead barriers or walls, thickness should be determined on type/ activity of radioactive materials
safety measures to protect staff and patients from radioactive exposure
-lead lined walls, storage cabinets- protect from unnecessary exposure
-provide personal dosimeters- ensures staff remain within safe limits
-minimise time spent near radioactive sources, use appropriate shielding, lead PPE.
-ensure SPECT scanner regularly maintained and calibrated , reduces equipment malfunction.
How does SPECT facilitate these safety measures
automated dose management- spect scanners come with built in dose management systems, ensures lowest dose possible.
multi detect systems can achieve high quality images quickly- reduces time of exposure
offers remote control features, operate scanner from a shielded room.
designed with integrated shielding around key components, reduces radiation levels.
how does the spect scanner ensure long term liability for the cdc diagnostic needs?
-meets diverse diagnostic demands
-allows for software and hardware updates e.g. new imaging protocols, extending its useful life.
-built with high quality materials, ensuring it remains operational and effective over the years.
