Consider the following (standard) linear programming problem: maximise a real-valued linear function CT x defined for optimisation variables x in Rn that have to satisfy the constraints Ax ≤ B, x ≥ 0, where the matrices A, B, and C are independent random variables that take values a, b, and c in Rm×n, Rm and Rn, respectively. Using an approach we developed in previous work [3], the problem is f...

PURPOSE The authors present initial progress toward a clinically compatible x-ray phase contrast CT system, using glancing-angle x-ray grating interferometry to provide high contrast soft tissue images at estimated by computer simulation dose levels comparable to conventional absorption based CT. METHODS DPC-CT scans of a joint phantom and of soft tissues were performed in order to answer sev...

OBJECTIVE To evaluate the diagnostic value of chest X-Ray in tracheobronchial foreign body aspiration among group of children in southern Punjab. METHODS The Cross sectional/comparative diagnostic procedural study was conducted in the Department of Radiology, Nishtar Medical College and Children Hospital Complex. Multan from January 2009-January 2011. Chest CT was performed in 45 consecutive ...

– gafchromic xrct radiochromic film is a self developing high sensitivity radiochromic filmproduct which can be used for assessment of delivered radiation doses which could match applications suchas computed tomography (ct) dosimetry. the dose response of gafchromic xrct radiochromic film hasbeen measured with reflectance spectrophotometry and desktop scanners. the film automatically changescol...

ACR Appropriateness Criteria 1 Rib Fractures American College of Radiology ACR Appropriateness Criteria Clinical Condition: Rib Fractures Variant 1: Adult. Suspected rib fractures from minor blunt trauma (injury confined to ribs). Radiologic Procedure Rating Comments RRL* X-ray chest 8 Obtain PA view. ☢ X-ray rib views 5 ☢ ☢ ☢ CT chest without contrast 3 ☢ ☢ ☢ Tc-99m bone scan whole body 2 ☢ ☢ ...

The unique radiation exposure conditions that exist in computed tomography (CT), during which thin slices of the patient are irradiated by a narrow, fan-shaped beam of x rays emitted from the x-ray tube during its rotation around the patient, have required the use of special dosimetry techniques to characterize the radiation doses to patients and to monitor CT system performance. This section d...

The data published with this article are high resolution X-ray computed tomography (CT) data obtained during an ex-situ fatigue test of a coupon test specimen made from a non-crimp fabric based glass fibre composite similar to those used for wind turbine blades. The fatigue test was interrupted four times for X-ray CT examination during the fatigue life of the considered specimen. All the X-ray...

ACR Appropriateness Criteria 1 Rib Fractures American College of Radiology ACR Appropriateness Criteria Clinical Condition: Rib Fractures Variant 1: Adult. Suspected rib fractures from minor blunt trauma (injury confined to ribs). Radiologic Procedure Rating Comments RRL* X-ray chest 8 Obtain PA view. ☢ X-ray rib views 5 ☢ ☢ ☢ CT chest without IV contrast 3 ☢ ☢ ☢ Tc-99m bone scan whole body 2 ☢...

Although high dose ionizing radiation (>100 mSv) harms humans, particularly (but not exclusively) concerning cancer, the effect of lower radiation doses is less clear. Low dose radiation exposure is of societal importance in relation to screening tests for cancer and occupational radiation exposure, as two examples. Inflammatory bowel disease (IBD) patients and cancer survivors undergo multiple...