Ct scan protocols pdf

Mri protocols, mri planning, mri techniques and anatomy. Ct protocols for brain imaging should be designed to answer the specific. It uses a combination of xrays and a computer to create pictures of your organs, bones, and other tissues. This page is for physicians, inside and outside this institution, and ct technologists. Ct protocols for revolution discovery ct discovery ct750. The volume contains a detailed technical section and covers the prevailing investigations of the brain, neck, lungs and chest, abdomen with parenchymal organs and gastrointestinal tract, the musculoskeletal system and cta as well as dedicated protocols for the heart. Unless otherwise noted, protocols that include intravenous contrast enhancement use a 300 concentration, low osmolality agent. Pdf multidetector computed tomography mdct, is the latest breakthrough in ct technology. Contrast oral no iv no scanning anatomical start top of liver anatomical stop symphysis inspiration yes filmingwindowing soft tissue yes. Sentreheart ct angiography protocol for left atrial appendage. Recommended protocol for medical cbct scanners scan time longest available voxel size 0.

Ctcbct scan protocol for trumatch cmf products and services usa. Ct scanning ct protocols ct scan protocols imaging. Mcintosh do, mph university of massachusetts medical center. It outlines ct protocols for diagnostic imaging currently applied to ou ct.

We hope you find this useful and would appreciate any comments or suggestions that you might have. Good quality ct scanning is the most important factor for the diagnosis of pulmonary emboli. Once all images are sent to the pacs, end the requisition. A metaanalysis on the effectiveness of multidetector ct for the diagnosis of small bowel obstruction. Chapter 1 ct scan protocols 5 satisfactory ct imaging quality images have clear, crisp bone dyes.

Chest, abdomen and pelvis ct protocols chest chest ct low dose nodule evaluation chest ct lung cancer screening chest ct routine with contrast. Ct sella with iv contrast img 14030 acquisition a b head fov. Diagnostic imaging a department of rutland regional medical center ct scan reference guide 10012017 safety questions for exams with iv contrast. It outlines ct protocols for diagnostic imaging currently applied to ou ct scanners. Options pet monitor to view scan length if desired applies to unmh pet only. The canadian head ct rule suggests a head ct is not necessary for this patient sensitivity 83100% for all intracranial traumatic findings, sensitivity 100% for findings requiring neurosurgical intervention.

Lp riccelli works closely with ohsu ct techs in the art of creating optimal images from current technology. Apr 01, 2007 diagnostic quality ct data are usually acquired using a breathhold protocol, whereas pet data are acquired over several minutes with the patient breathing softly. Typically 200 imaging protocols per scanner need the actual ct protocols. Evaluation of subdural hematoma, epidural hematoma, stroke, bleed, headaches, initial workup of acute or changing dementia, mental status changes, fractures, trauma, shunt malfunction, new onset of seizures particularly in adults hydrocephalus. If you have a single slice scanner, it will take about 20 seconds to scan the liver. For late arterial phase imaging 35 sec is the optimal time, so you. A cookbook approach to ct scanning is impractical as it cannot possibly account for all possible variables. Blueprint 3 e scan protocol 3 scan protocol introduction this document describes the guidelines for a shoulder ct scan to be processed by blueprint 3d planning software. Radiography imaging standards manual orthopedic msk protocol trauma x protocol. Always scan distal to cmcjs carpalmetacarpal joints the figure to the right illustrates the proper volume of coverage for a wrist ct when scanning the hand always start proximal to the druj scan through the area of interest this should be determined by the radiologist scanning parameters.

Resource categories materialise innovators you can count on. Standard imaging protocols this document includes typical imaging protocols for diagnostic imaging. Ct ordering guide body part reason for exam oral prep iv contrast procedure to pre cert cpt code chestthorax general chest chest pain shortness of breath pulmonary emboli none yes cta chest w iv 71275 pneumonia cough none yes ct thoraxchest w iv 71260 lung nodule none none ct thoraxchest wo contrast 71250. Ct body chest colonography prep musculoskeletal neuro pedi protocols. Differences between pet and ct breathing protocols might lead to misalignment artefacts owing to anatomical dislocations of the diaphragm and chest wall during a pet ct scan. Kalra, md, dnb massachusetts general hospital harvard medical school dianna d. Ct contrast injection and protocols the radiology assistant. Ct protocol the complete ct protocol, which includes nonenhanced ct, perfusion ct, and ct angiography, can be performed as a single examination with separate contrast material boluses.

Image gently pediatric imaging image wisely adult imaging the purpose of these ct protocol pages is to provide a reference. Consult with tmj concepts regarding cone beam scanning parameters. As the accuracy of the hipplan relies on the ct images that have been acquired, it is essential to follow as closely as possible the parameters described in this protocol, even though it might differ from hip imaging protocols routinely used by your institution for diagnosis purpose. Mcintosh do, mph university of massachusetts medical center unecom 2014 cme programreunion and alumni weekend. We prefer to scan from bottom to top, because if a patient cant hold his breath, then you will have less breathing artefacts in the lower lobes, where most of the emboli are located. Distinct boundaries between the bone and the surrounding soft tissue are apparent in these images unacceptable ct imaging images are blurry and have poor contrast between the bone and the surrounding soft tissues. Diamox head cta perfusion study broad beam patient position ioml perpendicular to table top. Special considerations for prot ocols in ct simulation process. Ct scan computed tomographycat scan centers and services. On a poor quality scan it is impossible to rule out emboli.

Patients with an allergy to iodine or other contraindication to iodinated contrast that require positive oral contrast as outlined below. These protocol steps were determined for optimum scan quality. The purpose of these ct protocol pages is to provide a reference for radiology residents, fellows and technologists when prescribing a ct examination. In 2010, the alliance for quality computed tomography working group was formed to provide information to ct users that enhances the quality of their ct practice. Is ultimately responsible for the quality of ct scans performed by hisher technologists. Resource categories materialise innovators you can. Femoral anteversion page 1 of 2 indications for femoral anteversion aka ct scanogram, tibial torsion this is a very limited study. Diagnostic quality ct data are usually acquired using a breathhold protocol, whereas pet data are acquired over several minutes with the patient breathing softly. For any given ct examination, the protocol will vary according the individual requirement of the imaging site. Scan range apex to adrenals apex to adrenals rotation time 0. Acquire all angiograms with both detectors on twoheaded cameras. Consider obtaining a ct scan if any questions in the rule are answered affirmatively. The working group was initially charged with the development of reference ct protocols, which are defined by the working group to be reasonable and appropriate protocols for specified diagnostic tasks.

Send the 3 or 4 sets of reformatted images to the ct folder. To address the more and more dedicated examinations, the second edition of. Standardization and optimization of computed tomography. Following this scanning protocol will optimize the likelihood of successful scan reconstruction in. Find links to protocols for ct examinations for various body parts at rhode island hospital, also welcoming. Bone scan mdp special instructions consult with radiologist prior to all threephase bone scans to confirm views for angiogram and immediate static images. Unfortunately, despite this growing awareness among radiologists, the introduction of each new generation of. Confirm that ct techniques for adult head, abdomenpelvis, chest, and pediatric head and pediatric abdomen exams are at or below the reference levels suggested by the acr currently 75, 25, 21, 40, and 20.

Ct scan images provide moredetailed information than plain xrays do. The shoulder ct scanning protocol consists of a axial high resolution scan of the patients scapula. A computerized tomography ct scan combines a series of xray images taken from different angles around your body and uses computer processing to create crosssectional images slices of the bones, blood vessels and soft tissues inside your body. Its broad research objective has been the advancement of knowledge for early diagnosis and treatment of lung cancer. Ioml perpendicular to table top contrast 75 ml adult injection rate 3 ml per sec. Taking small steps like these to design, implement, and monitor ct protocols as an imaging physician. We also enhance the ct protocols with select instructive cases. The ct scanner parameters must be set before the first zimmer biomet patient scan. Slice counts dual source, 320 slice, 256 slice, 128 slice, 64 slice, 16 slice, 4 slice, single detector. A new systematic approach for the imaging assessment of patients with chronic pancreatitis april 2020. Scan is only needed when contrast is given unless protocolled otherwise. These protocols were discussed and agreed upon by members of each subspecialty section within tra medical imaging. Not to be copied, distributed, or reproduced without prior.

The protocols presented in this section are intended as examples of just a few of the many possible. The patient should stay awake with eyes open and rest. Acrasnrspr practice parameter for the performance of. Ct scanners has resulted in scanning protocols that. Communication of information such that a technologist can successfully perform a scan that meets the. The development and refinement of the international early lung cancer action program ielcap screening protocol has been a concern of the ielcap originally the early lung cancer action program team for the past 25 years 19. Ct scan quality can directly affect guide manufacturing and accuracy of the glenoid guide. Also send the ap and lateral scout images to the ct folder. The membership includes academic and consulting medical physicists who specialize in ct imaging, representatives of each of the major ct scanner manufacturers, and liaisons to the. Each imaging facility has its own, often unique, set of examination protocols.

Fdg pet ct continued page 2 of 8 for all brain petcts, the patient should be in a quietdarkened room during the uptake phase. Confirm the images have passed to the transmission queue. The primary purpose of this scan is to allow the radiologist to measure the angle of rotation of the femoral necks relative to the femoral condyles, bilaterally. Brain imaging ct brain imaging may be performed with a sequential singleslice technique, multislice helical spiral protocol, or multidetector multislice algorithm 111,112. The following documents are radiology protocols for all medical imaging sites at which tra medical imaging is responsible for the administration, quality and interpretation of medical imaging examinations.

Stanford cardiovascular ct scanning and injection protocols preface cardiovascular imaging is one of the most important and visible beneficiaries of the recent and dramatic evolution of comuted tomographic ct technology. This protocol is to ensure that accurate 3d bone models can be created and used for the design and manufacture of patientfitted temporomandibular joint prostheses. The examination is frequently completed and analyzed within 15 minutes in a real clinical setting using newgeneration multidetector ct scanners. Ct scanning ct protocols ctisus ct scan, protocols. Other similar protocols can be used with different ct equipment 15. Ct protocols for common primary care diagnoses lacey j. Ct angiography versus conventional angiography for the postoperative evaluation of clipped cerebral aneurysm april 2020. Computed tomography ct is the mainstay of diagnostic imaging evaluation of thoracic disorders. To help answer those questions we have put together our protocols as well as adding ct scan protocols from other institutions that we thought might prove useful. Computed tomography ct scanners have become markedly more complex over the past three decades, with a myriad of new options for performing ct examinations. Jan 29, 2016 emerging concerns regarding the hazard from medical radiation including ct examinations has been suggested.

Stanford cardiovascular ct scanning and injection protocols. The table shows an overview of some of the ct protocols, that we use click to enlarge. For pulmonary masses 3cm or hilar enlargement use chest ct with contrast routine protocol contrast parameters parameters contrast type per institution contrast volume 7580cc use 100 cc if combined with abdomen ct. Ct imaging increasingly relies on the integration of a variety of knowledge and skills. They are based on a 64slice scanner but can be used for any ct scanner independent of manufacturer. In the planning section you will find full explanations and illustrations of how to plan mri scans of different parts of the body, together with suitable protocols and parameters.

A computed tomography ct or cat scan allows doctors to see inside your body. For spectct examinations, confirm with the radiologist whether the ct is required. In this table only specific protocols are summarized, since most institutions have their own standard protocols. Pdf computed tomography ct is the mainstay of diagnostic imaging evaluation of thoracic disorders. All sections journal club lectures pearls protocols case studies medical illustrations search. Pdf noninvasive crosssectional imaging techniques play a crucial role in the assessment of the varied manifestations of vascular disease. Ct scan protocols, ct protocols by manufacturer ge, siemens, phillips, toshiba. Region of scan lung apices to iliac crests scan delay 1 na 2 care bolus at diaphragmatic aorta.

Assessment of cirrhotic liver enhancement with multiphasic. Find protocols for performing ct neck scans at rhode island hospital, also welcoming massachusetts patients. On chronicle, enter pet dose, time administered, and time per bed position 2. Ct protocols in radiation therapy department the role of the ct in radiotherapy department. Given the rapid evolution of ct technology in the past decade, the number of applications for ct has expanded greatly and the techniques for performing the optimal exam have also increased. Ct scan reference guide rutland regional medical center. When ct is complete approximately 25 secs, you will be prompted to. Compare ct exposures to currently developing diagnostic reference levels drls to compare your protocols to regional and national values. Kub nephrolithiasis stones, urolithiasis, flank pain and hematuria series 1 scan slice thickness 5 index 5 fov pt size algorithm std. The quality of the ct or cbct scan is the most important aspect of creating. Slice counts dual source, 320 slice, 256 slice, 128 slice, 64 slice, 16 slice, 4. Technical developments in the past have focused on helical technology, increased speed of gantry rotation, increasing number of detector rows, and increasing tube outputs to maintain. The purpose of this study was to observe the longitudinal changes of ct radiation doses of various ct protocols and to estimate the longterm efforts.

Aapm ct scan protocols the alliance for quality computed. Chest, abdomen and pelvis ct protocols chest chest ct low dose nodule evaluation chest ct lung cancer screening chest ct routine with contrast chest ct without routine chest cta pulmonary embolism chest cta acute aorta chest cta aortic aneurysm pre evt chest cta aortic aneurysm post evt chest cta acute aorta trauma chest ct high resolution. The adult routine neck protocol was changed to scan top down, and the injection timing and contrast amount were changed from 110 mls to 100. This book provides structured uptodate information on all routine protocols used for multislice multidetector row ct. For ct of the brain, contiguous or overlapping axial slices should. However, there are a number of ct protocols ranging from a simple noncontrast ct at one end of the. Developing dose and protocol monitoring from scratch ingrid reiser, phd dabr. Simultaneous inj scan focus small kv 80 ma 310 150 300 see chart below. Ct angiography cta has evolved into a routine minimallyinvasive vas and cardiac ct. Ct scan parameters and radiation dose yale school of medicine.

1337 569 593 451 166 138 766 1258 1231 1226 1365 1505 290 618 155 463 1357 1193 1519 156 761 1280 692 16 38 1291 109 728 282