"Indications for Computed Tomography in Patients with Minor Head Injury". New England Journal of Medicine. 343 (2): 100-105. doi ... Computed tomography of the head uses a series of X-rays in a CT scan of the head taken from many different directions; the ... Computed tomography (CT) has become the diagnostic modality of choice for head trauma due to its accuracy, reliability, safety ... "Head CT (Computed Tomography, CAT scan)". Radiological Society of North America (RSNA) and American College of Radiology. June ...
"Imaging of cardiovascular calcifications with electron beam tomography in hemodialysis patients". American Journal of Kidney ... Electron beam computed tomography (EBCT) is a specific form of computed tomography (CT) in which the X-ray tube is not ... "Computed Tomography Techniques and Principles. Part a. Electron Beam Computed Tomography". In Anagnostopoulos, Constantinos D ... Patients are exposed to radiation for a shorter period as it is faster in creating multiple images of the heart. The most ...
This can either be used to increase the image quality at the same X-ray exposure level, or to lower the patient X-ray dose ... Photon-counting computed tomography (PCCT) is a form of X-ray computed tomography (CT) in which X-rays are detected using a ... These include improved signal (and contrast) to noise ratio, reduced X-ray dose to the patient, improved spatial resolution and ... Roessl E, Proksa R (August 2007). "K-edge imaging in x-ray computed tomography using multi-bin photon counting detectors". ...
As of October 2020, Jen-Ai Hospital International Patient Center has helped over 137,000 international patient visits, with ... Positron Emission Tomography Center; Breast Center; Baby-Friendly Center; Hemodialysis Center; Respiratory Care Center; Pain ... "International Patient Center" in Taiwan and having the most number of international patients with different nationalities in ... International Patient Center (IPC) was first launched in 2003 by Mark K. Chan, International Medical Services Consultant, due ...
Society of Cardiovascular Computed Tomography. "Five Things Physicians and Patients Should Question". Choosing Wisely: An ... Patient demand is a sort of self-diagnosis in which patients request treatment regardless of whether the treatment they request ... Research suggests that patients are more satisfied with their treatment when it is or seems expensive because patients believe ... Furthermore, when patients are shielded from cost sharing, that also tends to increase rates of overscreening as when patients ...
In patients with abnormal findings on chest radiographs, prone scans are only useful in 4% of cases. The scans may be more ... High-resolution computed tomography (HRCT) is a type of computed tomography (CT) with specific techniques to enhance image ... When the patient is positioned prone, or on their belly, the lung bases can expand further and help distinguish atelectasis ... In patients with normal chest radiographs, prone scans have been found useful in 17% of cases, particularly in excluding ...
This eliminates the time needed to transfer a patient from the angiography suite to a conventional computed tomography scanner ... "Estimated radiation risk of cancer from dental cone-beam computed tomography imaging in orthodontics patients". BMC Oral Health ... flat panel CT or Digital Volume Tomography (DVT)) is a medical imaging technique consisting of X-ray computed tomography where ... Cone beam computed tomography (or CBCT, also referred to as C-arm CT, cone beam volume CT, ...
The unit of CTDI is the gray (Gy) and it can be used in conjunction with patient size to estimate the absorbed dose. The CTDI ... The computed tomography dose index (CTDI) is a commonly used radiation exposure index in X-ray computed tomography (CT), first ... Geleijns, J; Salvadó Artells, M; de Bruin, P W; Matter, R; Muramatsu, Y; McNitt-Gray, M F (21 May 2009). "Computed tomography ... also impacts on patient dose. The pitch factor, P, is defined as P = d 360 ∘ C {\displaystyle P={\frac {d_{360^{\circ }}}{C}}} ...
5,000 patient dose measurements from 375 hospitals) Brenner, David J.; Hall, Eric J. (2007). "Computed Tomography - an ...
Improved patient care Strengthened referral patterns Extended patient care and expertise to remote areas Education of hospital ... Some of these locations use a fundus camera, others use both fundus and optical coherence tomography (OCT) imaging devices, and ... Approximately 120 patients are screened per month, by five reading ophthalmologists. In Ontario, the implementation of ... Along with systems designed for health care professionals, patient-centred systems such as Eye-File for use by the general ...
... was demonstrated to be safe among heterogeneous groups of patients presenting ... Intracoronary optical coherence tomography (OCT) (or, more generally, intravascular optical coherence tomography, IVOCT) is an ... State-of-the-art intracoronary optical coherence tomography uses a swept-source laser to make OCT images at high-speed (i.e., ... Recent clinical trials reported a very low rate of self-limiting, minor complications on over 3,000 patients where in all cases ...
However, two commercial f-EIT devices for monitoring lung function in intensive care patients have been introduced just ... Electrical resistivity tomography has also been proposed for mapping the electrical properties of substrates and thin films for ... Electrical impedance tomography (EIT) is a noninvasive type of medical imaging in which the electrical conductivity, ... As mentioned above and unlike linear x-rays in Computed Tomography, electric currents travel three-dimensionally along the path ...
Patient stops passing flatus and motion, abdomen is distended.[citation needed] The symptoms of esophageal rupture may include ... The perforation can often be visualised using computed tomography. White blood cells are often elevated.[citation needed] ... Sharma AK, Sharma RK, Sharma SK, Sharma A, Soni D (2013). "Typhoid Intestinal Perforation: 24 Perforations in One Patient". ... Gas is easily visualized on x-ray while the patient is in an upright position. ...
Haydel MJ, Preston CA, Mills TJ, Luber S, Blaudeau E, DeBlieux PM (2000). "Indications for computed tomography in patients with ... 1982). "A computer-derived protocol to aid in the diagnosis of emergency room patients with acute chest pain". N. Engl. J. Med ... 2001). "The Canadian C-spine rule for radiography in alert and stable trauma patients". JAMA. 286 (15): 1841-8. doi:10.1001/ ... Goldman used recursive partitioning to prioritize sensitivity in the diagnosis of myocardial infarction among patients with ...
Patients are more likely to have yellowing of the skin (jaundice) than in calculous cholecystitis. Ultrasonography or computed ... tomography often shows an immobile, enlarged gallbladder. Treatment involves immediate antibiotics and cholecystectomy within ... Chen L, Tao SF, Xu Y, Fang F, Peng SY (2005). "Patients' quality of life after laparoscopic or open cholecystectomy". Journal ... Banz V, Gsponer T, Candinas D, Güller U (2011). "Population-Based Analysis of 4113 Patients with Acute Cholecystitis". Annals ...
Application- and patient size-dependent optimization of x-ray spectra for CT. Med. Phys. 2009; 36:993-1007 [9] Kalender WA. ... Dose in x-ray computed tomography. Phys Med Biol 2014; 59 R129-R150 [10] Kalender WA, Beister M, Boone JM, Kolditz D, Vollmar ... The goals of and motivation for his projects were mostly derived from observations during patient exams in clinical radiology. ... Eur Radiol 2017; 27:1081-1087 [12] The 4th edition of the textbook "Computed Tomography" by WA Kalender, published by Publicis ...
"Neuropsychological alterations in patients with computed tomography-detected basal ganglia calcification". Archives of ... For example, a case of achalasia was misdiagnosed as AN and the patient spent two months confined to a psychiatric hospital. A ... Upon performance of a CCK test, standard imaging techniques are done with the patient lying prone, in this instance it was done ... Da Silva, J.; Alves, A.; Talina, M.; Carreiro, S.; Guimarães, J. O.; Xavier, M. (2007). "Arachnoid cyst in a patient with ...
High risk patients that had mild symptoms, chest imaging findings were limited. Although a computerized tomography scan is a ... Patients with asymptomatic to mild symptoms are not recommended to be tested via chest computerized tomography scans. However, ... This is not as available as chest x-ray, but still only takes about 15 minutes per patient. Computerized tomography has been a ... Computerized tomography scans may help with ongoing illness monitoring throughout treatment. Patients who had low-grade ...
Therefore positron emission tomography (PET) is preferred in the current studies. Patients with multiple sclerosis (MS) ... of the patients and could behave differently from the rest of patients. Later its existence was confirmed (2018) Besides all ... In this way, the number of patients in this group was low enough to get the interferon approved by the FDA under the orphan ... Phase III programs consist of studies on large patient groups (300 to 3,000 or more) and are aimed at being the definitive ...
... high-resolution computed tomography findings in 10 patients". J Bras Pneumol. 33 (5): 552-557. doi:10.1590/S1806- ... Patients typically have no symptoms until the third or fourth decade of life. In most cases, the disease is discovered ... After PAM is diagnosed in a given patient, family members should be screened by chest radiography, and parents should be ... Chest radiographs of patients with PAM usually reveal bilateral diffuse micronodular calcifications, producing a "sandstorm" ...
3D-rendered computed tomography, showing splenic artery at upper right. The celiac artery and its branches. Transverse section ... For the treatment of patients who represent a high surgical risk, percutaneous endovascular treatment may be considered.[5] ...
Optical coherence tomography (OCT) represents a powerful clinical tool for monitoring retinal physiology in patients. OCT uses ... It is a commonly used technique but it has a large number of side effects, including nausea in one fifth of patients and in ... Optical coherence tomography. Spie Milestone Series MS. 1998;147:324-7. Romero-Borja F, Venkateswaran K, Roorda A, Hebert T. " ... The imaging of retinal pigment epithelium (RPE) cells in patients with and without retinal disease has also proved possible ...
The patient must be alert and interactive for mapping procedures, though patient involvement varies with each mapping procedure ... MRI and computed tomography images were also obtained for each subject. The epileptogenic zones identified from preoperative ... EEG findings were further validated by the surgical outcomes of all three patients. After surgical resectioning, two patients ... This method was tested in three pediatric patients with intractable epilepsy, with encouraging clinical results. Each patient ...
All patients died from surgery or postoperative complications. 1935: Russell and Donald suggested that decompression of the ... Journal of Computer Assisted Tomography. 9 (6): 1033-6. doi:10.1097/00004728-198511000-00005. PMID 4056132. S2CID 37901812. ... Type II patients have severe brain stem damage and rapidly diminishing neurological response. Decompressive surgery involves ... Aboulezz AO, Sartor K, Geyer CA, Gado MH (1985). "Position of cerebellar tonsils in the normal population and in patients with ...
The helical scan method reduces the X-ray dose to the patient required for a given resolution while scanning more quickly. This ... Spiral computed tomography, or helical computed tomography, is a computed tomography (CT) technology in which the source and ... Helical (or spiral) cone beam computed tomography is a type of three-dimensional computed tomography (CT) in which the source ( ... In this section, the basic principle of tomography in the case that especially uses tomography utilizing the parallel beam ...
... computerized tomography stereotaxic guidance system". Journal of Neurosurgery. 59 (2): 217-22. doi:10.3171/jns.1983.59.2.0217. ... Patient registration (1) eliminates the necessity of maintaining the same strict position of the patient during both ... Patient registration for the head area has developed for nearly two decades on the same principle of combining CT scans with ... The role of patient registration is to obtain a close-to-ideal reference reproducibility of the dataset - in order to correlate ...
2000) studied patients with lesions to areas in the frontal lobe such as Brodmann's area 10, finding that these patients failed ... Studies using positron emission tomography (PET) trace a slight increase in blood flow to the frontal lobe in participants ... 2008) assessed patients with episodic memory impairment due to epilepsy associated with mesial temporal sclerosis. Patients ... For example, patients may forget to take medication at certain times of the day, but forgetting is less likely if they see the ...
3. Approach to the Evaluation of New Patients The initial evaluation of a patient with a newly diagnosed tumor of the nervous ... The imaging studies commonly used in neurooncology are computed tomography (CT) and magnetic resonance imaging (MRI). Less ... of patients with intracranial tumors. Seizures occur in up to 50% of patients with melanoma metastases, oligodendrogliomas, and ... Write down new or important diagnoses for the patient to refer to at home. Identify one reliable caregiver to serve as a ...
... but what does it mean for patients?", Arney, Kat, Science blog, Cancer Research UK, 16 September 2013 (Orphaned articles from ... Proton computed tomography (pCT), or proton CT, is an imaging modality first proposed by Cormack in 1963 and initial experiment ... Proton computed tomography (pCT) uses measurements of a proton's position/trajectory and energy before and after traversing an ... 1981-11-01). "Computed tomography using proton energy loss". Physics in Medicine and Biology. IOP Publishing. 26 (6): 965-983. ...
ISBN 978-0-387-78692-6. Kapadia, Anuj (2007). Accuracy and patient dose in neutron stimulated emission computed tomography for ... "Neutron-stimulated emission computed tomography of a multi-element phantom," Physics in Medicine and Biology. 53:2313. 2008. ( ... "Neutron stimulated emission computed tomography: a Monte Carlo simulation approach,"Physics in Medicine and Biology. 52:6117. ... Neutron stimulated emission computed tomography (NSECT) uses induced gamma emission through neutron inelastic scattering to ...