background: in order to assign appropriate planning target volume (ptv) margins, each centre should measure the patient positioning deviations for their set-up techniques. at the royal marsden hospital, uk, a conformal shell (cast) system is used when a stereotactic frame is not suitable. in this paper, we report on a series of measurements with the aim of obtaining the systematic and random co...

We proposed a novel decoding algorithm for Analog Codes (Reed-Solomon Codes over complex numbers), the syndrome repairing (SR) algorithm, for gross error correction in signal transmission. Simulations show that, if the number of gross errors is not too large and the amplitude of background noise is small enough (compared to the amplitude of gross errors), the SR algorithm recovers the original ...

Background: Medical errors are those errors or mistakes committed by healthcare professionals due to errors of omission, errors in planning, and errors of execution of a planned healthcare action whether or not it is harmful to the patient. Medical error in hospitals increases morbidity and mortality and decreases patient satisfaction and hospital productivity. This study aimed to determine the...

PURPOSE The purpose of this study is to determine dose delivery errors that could result from random and systematic setup errors for head-and-neck patients treated using the simultaneous integrated boost (SIB)-intensity-modulated radiation therapy (IMRT) technique. METHODS AND MATERIALS Twenty-four patients who participated in an intramural Phase I/II parotid-sparing IMRT dose-escalation prot...

Value Errors in Tables and Abstract: The Rational Clinical Examination Systematic Review entitled “Does This Patient Have Posttraumatic Stress Disorder? Rational Clinical Examination Systematic Review” published in the August 4, 2015, issue of JAMA1 had incorrect data in the Abstract, in Table 3, and in eAppendix 5. In the Abstract, 2 sentences were removed and some values were rounded. The Tra...