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Provides step-by-step workflow guidance including patient preparation, thyroid blocking, drug considerations, injection timing, and positioning for high-quality SPECT. Covers SPECT camera setup, imaging parameters, reconstruction and re-orientation, visual assessment, motion mitigation, scaling corrections, quantification, and a DaTSCAN checklist.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/a-technologists-guide-to-datscan-imaging/292188/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/a-technologists-guide-to-datscan-imaging/292188.png","ImageObject",300,407,{"name":92,"@type":93},"Rowan","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-22","2026-09-17",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",15,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What is DaTSCAN used to assess in the brain?","Question",{"text":113,"@type":114},"DaTSCAN contains a dopamine transporter radioligand and is used to assess pre-synaptic striatal uptake in the basal ganglia.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"What key patient preparation steps are required before the scan?",{"text":118,"@type":114},"Some drugs may need to be stopped prior to the study and detailed instructions should be checked in the SPC. Thyroid blocking is required 1 hour before injection, and the procedure should be explained with emphasis on remaining still during the scan.",{"name":120,"@type":111,"acceptedAnswer":121},"What imaging and reconstruction parameters help ensure accurate DaTSCAN SPECT results?",{"text":122,"@type":114},"Use high-quality acquisition with appropriate camera setup (e.g., collimator type, photopeak window, tight radius of rotation) and calibrated imaging with a striatal phantom. Reconstruct using Filter Back Projection or iterative reconstruction, avoid over-smoothing, and re-orient images to correct for patient tilt.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},292188,1789648871,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":140,"language":141,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":142,"faqs":143,"seo_title":144,"seo_description":67,"update_tm":130,"read_time":145},1099514067415,"https://ap-avatar.wpscdn.com/avatar/100002539d78ffe74a7?x-image-process=image/resize,m_fixed,w_180,h_180&k=1779092875211072502","Resolve to move forward  \nA technologist’s guide to DaTSCAN imaging  \nGuiding by insight  \nContents  \nIntroduction ...................................................................... 3  \nPatient preparation ...................................................... 4  \nPatient positioning ........................................................ 5  \nSPECT imaging parameters ...................................... 6  \nImage reconstruction .................................................. 7  \nImage display .................................................................. 8  \nRe-orientation of images ........................................... 9  \nVisual assessment ........................................................ 10  \nPatient movement ........................................................ 12  \nIncorrect scaling ............................................................ 13  \nQuantification.................................................................. 14  \nDaTSCAN checklist ........................................................ 15  \nA technologist’s guide to DaTSCAN imaging  \nIntroduction1  \nDaTSCAN contains a dopamine transporter radioligand and is used to assess the pre-synaptic striatal uptake in the basal ganglia of the brain.  \nThe patterns of uptake can differentiate between:  \n• Parkinsonian syndromes (PS) with striatal presynaptic degeneration and essential tremor (ET)  \n• Probable dementia with Lewy bodies (DLB) and Alzheimer’s disease  \nDaTSCAN is supplied in a single dose vial. An injection of 185MBq 123 I DaTSCAN is given and the patient imaged the same day.  \n3  \nPatient preparation  \nSome drugs may need to be stopped prior to the study. Please refer to the SPC for detailed information.1  \n\n| The patient should be asked to contact your department when\u003Cbr>forwarded an appointment so that any necessary changes can be made. |\n| --- |\n| Thyroid blocking is required 1 hour before injection only. |\n| Explain the procedure fully to the patient, emphasising the need to remain still during the scan. |\n| It may be useful to show the camera to your patient to check if there are any issues, i.e. claustrophobia, beforehand. |\n| DaTSCAN is supplied ready to use in single dose vials.\u003Cbr>Inject slowly via a venflon (not less than 15-20 seconds).\u003Cbr>Image 3-6 hours later. |\n| No other restrictions are necessary. |\n| DaTSCAN is contraindicated in pregnancy and in patients with hypersensitivity to the active substance or to any of the excipients.1 |\n\nPutamen   \nAdapted by GE Healthcare Image on file GE Healthcare  \nPatient positioning    \nA headrest must be used to ensure high quality images. A head restraint should also be used to minimise movement.  \n\n| For maximum patient comfort, place a support under the knees and support the arms. |\n| --- |\n| This exam is hard to correct for motion, so a good quality acquisition is important. |\n| The radius of rotation defines the resolution of the study and should be setup as close to the patient’s head as possible. |\n| This will vary dependent upon the system used but 12–15cm radius of rotation is ideal. |\n| The structures being imaged are positioned above ear level and, unlike cerebral blood flow studies, the cerebellum does not need to be included. |\n| The patient may therefore be moved further out of the camera heads to avoid the shoulders and obtain a smaller radius. |\n| Record radius of rotation on the patient’s request form for the reporter’s information. |\n| If the patient is unable to tolerate this exam, you may consider 180 degree acquisition.2 |\n\nAdapted by GE Healthcare. Image on file GE Healthcare.  \nSPECT imaging parameters  \nCamera set up:  \n\n| High Resolution or fan beam collimator. |\n| --- |\n| 123 I 159 KeV photopeak +/ -10% window.\u003Cbr>Radius as tight as possible (typically 12–14 cm). |\n| Contouring is not recommended. A circular orbit is preferred. |\n| Matrix size: 128 x 128. |\n| Pixel size: ideal size is 3.5 mm – 4.5 mm. |\n| A zoom may need to be applied to achi","cbCaidmNhkIK3Knn","https://ap.wps.com/l/cbCaidmNhkIK3Knn","pdf",2148634,18,"English","# Introduction\n# Patient preparation\n# Patient positioning\n# SPECT imaging parameters\n# Image reconstruction\n# Image display\n## Re-orientation of images\n# Visual assessment\n# Patient movement\n# Incorrect scaling\n# Quantification\n# DaTSCAN checklist","[{\"question\":\"What is DaTSCAN used to assess in the brain?\",\"answer\":\"DaTSCAN contains a dopamine transporter radioligand and is used to assess pre-synaptic striatal uptake in the basal ganglia.\"},{\"question\":\"What key patient preparation steps are required before the scan?\",\"answer\":\"Some drugs may need to be stopped prior to the study and detailed instructions should be checked in the SPC. Thyroid blocking is required 1 hour before injection, and the procedure should be explained with emphasis on remaining still during the scan.\"},{\"question\":\"What imaging and reconstruction parameters help ensure accurate DaTSCAN SPECT results?\",\"answer\":\"Use high-quality acquisition with appropriate camera setup (e.g., collimator type, photopeak window, tight radius of rotation) and calibrated imaging with a striatal phantom. Reconstruct using Filter Back Projection or iterative reconstruction, avoid over-smoothing, and re-orient images to correct for patient tilt.\"}]","A technologist’s guide to DaTSCAN imaging | PDF",45]