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Patient Position (patient + position)
Selected AbstractsSitting on the Evidence: What Is the Proper Patient Position for the Office Measurement of Blood Pressure?JOURNAL OF CLINICAL HYPERTENSION, Issue 6 2005Ari Mosenkis MD No abstract is available for this article. [source] Patient position for microlaryngoscopy: a trainee surveyCLINICAL OTOLARYNGOLOGY, Issue 3 2010N. Hamilton No abstract is available for this article. [source] Endoscopic treatment of a long fibroepithelial ureteral polypINTERNATIONAL JOURNAL OF UROLOGY, Issue 8 2001Shizuo Yagi Abstract A case is reported of a 30-year-old woman with a long fibroepithelial polyp in the middle ureter treated with the Ho-YAG laser endoscopically. She presented with an intermittent macroscopic hematuria and lower abdominal pain lasting for 1 year. The filling defect on urography occupying one-third of the ureter was migratory depending on the patient position. Transurethral flexible ureterorenoscopy showed a large pedunculated tumor with a small base at the middle ureter. About 1 month after the endoscopic irradiation of the Ho-YAG laser to the base of tumor, the tumor was spontaneously discharged and pathologic examination revealed it to be a fibroepithelial polyp without malignant component. Postoperatively, the patient remained asymptomatic and follow-up excretory urographs showed no abnormal findings. [source] Tissue harmonic sonography in the diagnosis of common bile duct stones: A comparison with endoscopic retrograde cholangiographyJOURNAL OF CLINICAL ULTRASOUND, Issue 9 2009Tomás Ripollés MD Abstract Purpose To revisit the diagnostic accuracy of sonography in the detection of choledocholithiasis using modern equipment with tissue harmonic imaging (THI) and endoscopic retrograde cholangiopancreatography (ERCP) with sphincterotomy as the gold standard. Methods A total of 107 patients with clinically suspected choledocholithiasis were examined with THI before undergoing ERCP. The sonographic findings that were prospectively evaluated included the presence of choledocholithiasis, size of common bile duct, sonographic view and patient position that best visualized the stone(s), visualization of the distal common duct, and duration of examination. The accuracy of sonography compared with ERCP and sphincterotomy was calculated. Results Sonography correctly detected stones in 65 of 76 patients (sensitivity of 86%). The specificity and the overall accuracy were 87% and 86%, respectively. The sensitivity of sonography was higher with dilated extrahepatic duct (44% in patients with common bile duct measuring less than 6 mm in diameter, 82% between 6 and 10 mm, and 100% with common bile duct larger than 10 mm). The lateral approach with the patient in left lateral decubitus position of the patient was the most effective in 47% of the cases. Conclusion Sonography with THI is an accurate technique for the detection of choledocholithiasis that may be used as the first-choice technique to avoid unnecessary procedures in a high percentage of patients, especially those with dilated biliary tree. © 2009 Wiley Periodicals, Inc. J Clin Ultrasound, 2009 [source] Accuracy of prostate radiation therapy using a fiducial point-pair registration technique based on the computer-assisted portal imaging quality assurance program PIPSproJOURNAL OF MEDICAL IMAGING AND RADIATION ONCOLOGY, Issue 2 2003Wilmosh Mermershtain Summary The aim of this study was to assess portal imaging for quality assurance of patient positioning in external beam radiotherapy. We present a retrospective study of the variability of patient position in the treatment of 34 prostate cancer patients who were treated with whole pelvic irradiation followed by arc therapy or boost field (Series I) and 25 patients treated by ,small' pelvic 4-field box technique (Series II). Weekly anteroposterior-posteranterior (AP-PA) and left-lateral portal images were compared to simulation films by using a fiducial point-pair registration technique based on the computer-assisted portal imaging quality assurance program PIPSpro, developed specifically for the verification of treatment positioning in radiation therapy. Series I consisted of 34 patients and 194 portal films (97 AP-PA and 97 left-lateral). Overirradiated (OA) and underirradiated (UA) areas were computed in terms of percentage of the reference field size. For the AP-PA portals, the average OA was 2.75% and average UA was 2.74%. For left-lateral portals, an average OA of 2.49% and UA of 2.78% were measured. Series II consisted of 25 patients and 194 portal films (98 AP-PA and 96 left-lateral). The average OA was 0.88% and average UA was 0.86% in AP-PA portals, and 1.03 and 0.82% for left-lateral portals, respectively. The accuracy of patient positioning in irradiation of prostate cancer in our institution is in the range of 2.69% for whole pelvic fields and 1.0% for small fields. We conclude that PIPSpro is an effective and useful tool for quality assurance in radiotherapy. [source] Decision-making models in the analysis of portal films: A clinical pilot studyJOURNAL OF MEDICAL IMAGING AND RADIATION ONCOLOGY, Issue 1 2000Andrew See SUMMARY Portal films continue to play an important role in the verification of radiotherapy treatment. There is still some discussion, however, as to what action should be taken after a port film has shown a radiation field deviation from the prescribed volume. It was the aim of the present pilot study to investigate the performance of three decision-making models (,Amsterdam', ,Quebec' and ,Newcastle') and an expert panel basing their decision on intuition rather than formal rules after portal film acquisition in a clinical setting. Portal films were acquired on every day during the first week of treatment for five head and neck and five prostate cancer patients (diagnostic phase). If required, the field position was modified according to our normal practice following the recommendation of the expert panel. In order to analyse the results of the models, however, additional port films were taken in the following 3 treatment weeks with the patient moved as required by the different models (intervention phase). The portal films were taken over 4 consecutive days, positioning the patient according to each of the different models on one day each. None of the models diagnosed a field misplacement in the head and neck patients, while the ,Amsterdam' and ,Quebec' models predicted a move in one prostate patient. The ,Newcastle' model, which is based on Hotelling's T 2 statistic, proved to be more sensitive and diagnosed a systematic displacement for three prostate patients. The intervention phase confirmed the diagnosis of the model, even if the three portal films taken with the patient position adjusted as required by the model proved to be insufficient to demonstrate an improvement. The ,Newcastle' model does not rely on assumptions about the random movement of patients and requires five portal films before a decision can be reached. This approach lends itself well to incorporation into electronic portal imaging ,packages', where repeated image acquisitions present no logistical difficulty. [source] The Positions of the Patients in the Diagnosis of Patent Foramen Ovale by Transcranial DopplerJOURNAL OF NEUROIMAGING, Issue 4 2003Gregory Telman ABSTRACT Background and Purpose. There is no information about the optimal position of a patient for the performance of a transcranial Doppler (TCD) examination to detect patent foramen ovale (PFO). Such information is important to improving the sensitivity of the test in comparison to the gold standard of transesophageal echocardiography (TEE). Methods. Thirty-four patients with TEE-proved PFO were examined by contrast TCD. Examinations were done in both the sitting and supine positions in random order. Results. Eight hundred ninety-two microemboli were recorded. Patients'positions and the sequence of testing did not affect the number of microemboli detected. Yet for each individual, 1 of the 2 positions was more sensitive. Conclusions. To improve the sensitivity of TCD in the detection of PFO, it is recommended, in the case of a first negative test, to change the patient's position for a repeated TCD examination. [source] | ||||||||||