The Use of a Portable Head CT Scanner in the Intensive Care Unit

Peace, Kaitlin M.; Wilensky, Eileen Maloney; Frangos, Suzanne; MacMurtrie, Eileen; Shields, Elizabeth Douglas; Hujcs, Marianne; Levine, Joshua M.; Kofke, Andrew; Yang, Wei; Roux, Peter D. Le

doi:10.1097/jnn.0b013e3181ce5c5b

Cited by 55 publications

(33 citation statements)

References 15 publications

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“…Portable CT scanners are beneficial in critical care units when patients cannot be transported to the radiological suite and an immediate diagnostics is required [15-17]. They are also beneficial for updating anatomical information real-time for image guided surgery as suggested by Das et al [18].…”

Section: Discussionmentioning

confidence: 99%

“…Because of errors in its three-dimensional representation of anatomy, this scanner is not recommended for IGS especially for those applications that require submillimetric accuracy, including intraoperative guidance. However, these scanners are still useful in the intensive care unit and emergency room where patients need immediate diagnostics without the need for submillimetric three-dimensional reconstruction [15, 17]. …”

Section: Discussionmentioning

confidence: 99%

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Evaluation of portable CT scanners for otologic image-guided surgery

et al. 2011

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Purpose Portable CT scanners are beneficial for diagnosis in the intensive care unit, emergency room, and operating room. Portable fixed-base versus translating-base CT systems were evaluated for otologic image-guided surgical (IGS) applications based on geometric accuracy and utility for percutaneous cochlear implantation. Methods Five cadaveric skulls were fitted with fiducial markers and scanned using both a translating-base, 8-slice CT scanner (CereTom®) and a fixed-base, flat-panel, volume-CT (fpVCT) scanner (Xoran xCAT®). Images were analyzed for: (a) subjective quality (i.e. noise), (b) consistency of attenuation measurements (Hounsfield units) across similar tissue, and (c) geometric accuracy of fiducial marker positions. The utility of these scanners in clinical IGS cases was tested. Results Five cadaveric specimens were scanned using each of the scanners. The translating-base, 8-slice CT scanner had spatially consistent Hounsfield units, and the image quality was subjectively good. However, because of movement variations during scanning, the geometric accuracy of fiducial marker positions was low. The fixed-base, fpVCT system had high spatial resolution, but the images were noisy and had spatially inconsistent attenuation measurements; while the geometric representation of the fiducial markers was highly accurate. Conclusion Two types of portable CT scanners were evaluated for otologic IGS. The translating-base, 8-slice CT scanner provided better image quality than a fixed-base, fpVCT scanner. However, the inherent error in three-dimensional spatial relationships by the translating-based system makes it suboptimal for otologic IGS use.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Evaluation of portable CT scanners for otologic image-guided surgery

et al. 2011

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“…This equipment is particularly important in cases in which the patient is too ill or unstable to transport (12,13,14). The need for staff from the critical care unit to accompany the patient to the imaging department is also minimised (15,16).…”

Section: Clinical Relevancementioning

confidence: 99%

Limited Evaluation of Image Quality Produced by a Portable Head CT Scanner (CereTom) in a Neurosurgery Centre

Abdullah¹,

Adnan

Rahman

et al. 2017

MJMS

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Introduction: Computed tomography (CT) is the preferred diagnostic toolkit for head and brain imaging of head injury. A recent development is the invention of a portable CT scanner that can be beneficial from a clinical point of view.Aim: To compare the quality of CT brain images produced by a fixed CT scanner and a portable CT scanner (CereTom).Methods: This work was a single-centre retrospective study of CT brain images from 112 neurosurgical patients. Hounsfield units (HUs) of the images from CereTom were measured for air, water and bone. Three assessors independently evaluated the images from the fixed CT scanner and CereTom. Streak artefacts, visualisation of lesions and grey-white matter differentiation were evaluated at three different levels (centrum semiovale, basal ganglia and middle cerebellar peduncles). Each evaluation was scored 1 (poor), 2 (average) or 3 (good) and summed up to form an ordinal reading of 3 to 9.Results Conclusions: Results of the study showed a significant difference in image quality produced by the fixed CT scanner and CereTom, with the latter being more inferior than the former. However, HUs of the images produced by CereTom do fulfil the recommendation of the ACR. To date, only a few studies have been conducted to evaluate the image quality produced by a portable head CT scanner. Thus, we designed this study to evaluate the quality of CT brain images produced by a portable head CT scanner, CereTom, by comparing it with that of a fixed CT scanner in terms of the presence of streak artefacts, grey-white matter differentiation and visualisation of lesions. CT numbers (HUs) were measured for air, water and bone in the images produced by the portable CT scanner. Keywords Materials and Methods SubjectsThis work was a single-centre retrospective study involving trauma and non-trauma patients admitted with intracranial pathology to the Neurosurgery Centre, Hospital Sultanah Aminah Johor Bharu (HSAJB), Malaysia, within four months from 1 December 2014 until 31 March 2015. The National Medical Research and Ethics Committee of the Ministry of Health, Malaysia, approved the study.Patient registry of the admission record was screened together with the record book for portable CT scanner (CereTom) imaging in a duration of four months. Images from the same patient who had CT brain imaging performed from both CereTom and the fixed CT scanner within 48 h apart were selected. CT brain images harbouring intracranial pathology were taken from traumatic and non-traumatic patients of all age groups and sex. Images captured more than 48 h apart between the fixed CT scanner and CereTom or if any surgical intervention had been conducted between these imaging were excluded. Prominent artefacts from external devices preventing a clear assessment of CereTom images, fixed CT images or both were also excluded from this study. A final list of 112 pairs of imaging films of not more than 48 h apart were selected with no sampling conducted. MeasuresThe CT numbers (HUs) of all the selected images from C...

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“…This room has a high‐voltage power source, with shielding of the wall and ceiling, along with a technologist control room. However, transportation to a fixed scanner may be particularly difficult in certain populations such as critically ill patients in the intensive care units (ICUs), and has been associated with a high incidence of adverse events . Portable or mobile CT was developed to overcome these issues, and denotes a scanner that can be moved from place to place in a hospital environment with the ability to scan at a patient's bedside without having to transport to the imaging department.…”

Section: Introductionmentioning

confidence: 99%

Brain Imaging Using Mobile CT: Current Status and Future Prospects

John

Stock

Cerejo

et al. 2015

Journal of Neuroimaging

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Computed tomography (CT) is an invaluable tool in the diagnosis of many clinical conditions. Several advancements in biomedical engineering have achieved increase in speed, improvements in low-contrast detectability and image quality, and lower radiation. Portable or mobile CT constituted one such important advancement. It is especially useful in evaluating critically ill, intensive care unit patients by scanning them at bedside. A paradigm shift in utilization of mobile CT was its installation in ambulances for the management of acute stroke. Given the time sensitive nature of acute ischemic stroke, Mobile stroke units (MSU) were developed in Germany consisting of an ambulance equipped with a CT scanner, point of care laboratory system, along with teleradiological support. In a radical reconfiguration of stroke care, the MSU would bring the CT scanner to the stroke patient, without waiting for the patient at the emergency room. Two separate MSU projects in Saarland and Berlin demonstrated the safety and feasibility of this concept for prehospital stroke care, showing increased rate of intravenous thrombolysis and significant reduction in time to treatment compared to conventional care. MSU also improved the triage of patients to appropriate and specialized hospitals. Although multiple issues remain yet unanswered with the MSU concept including clinical outcome and cost-effectiveness, the MSU venture is visionary and enables delivery of life-saving and enhancing treatment for ischemic and hemorrhagic stroke. In this review, we discuss the development of mobile CT and its applications, with specific focus on its use in MSUs along with our institution's MSU experience.

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The Use of a Portable Head CT Scanner in the Intensive Care Unit

Cited by 55 publications

References 15 publications

Evaluation of portable CT scanners for otologic image-guided surgery

Evaluation of portable CT scanners for otologic image-guided surgery

Limited Evaluation of Image Quality Produced by a Portable Head CT Scanner (CereTom) in a Neurosurgery Centre

Brain Imaging Using Mobile CT: Current Status and Future Prospects

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