Penumbra Study guides, Class notes & Summaries

Penumbra Salvageable tissue -oxygen -blood pressure -Glucose Perfusion What oxygen delivers to the brain. Above the necklace-Anterior Circulation= Unilateral deficits Below the necklace-Posterior circulation= Bilateral deficits Circle of Willis-Collateral circulation= Aneurysm Cerebrum largest part of the brain Cerebrum: Frontal Lobe Motor function, personality, Brocca speech Brocca's aphasia-frontal lobe problem with the production and grammar speech syntax, people know...

recovery results from correct answer: recovery of the ischemic penumbra resolution of cerebral edam neuroplasticity and rehabilitation better outcomes associated with correct answer: early medical care smaller strokes specialized stroke care centers early intensive multidiscinplary rehab ischemic stroke recovery pattern correct answer: rapid in first month steady rate for 3 months progress may or may not be functional from 3-6 months functional status after 6 months remain...

What does recovery from stroke occur from physiologically? correct answer: - recovery of the ischemic penumbra -resolution of cerebral edema - neuroplasticity and rehab Better outcomes with stroke rehab are associated with..... correct answer: - early medical care - smaller strokes - specialized stroke centers (found in major cities) - early, intensive multidisciplinary rehab Recovery Patterns post stroke correct answer: - variable - Stroke in evolution vs completed stroke - ...

1. Look at the edges of the shadow. Are they sharp or fuzzy? __They are fuzzy________________________ 2. Move your hand up and down. How does this affect the fuzziness of the shadow? ________ ____The closer it gets the more fuzzy _____________________________________________________________________ 3. Why do you think the shadow has fuzzy edges? ___________________________________ ______The light sources are obstructed and by objects and appear fuzzy _____________________________________...

A step wedge can be used to demonstrate A. penumbra B. film contrast C. magnification of image D. film composition - Answer B On a radiograph, what is the dense radiopaque band that outlines the edge of the mandible? A. Mylohyoid ridge B. Inferior border C. Mental protuberance D. Oblique ridge - Answer B Which the following quality control tests evaluates safe lighting in the darkroom? A. Timer test B. Step wedge C. Coin test D. Normalizing device - Answer C Which fil...

CAMRT Exam Questions and Answers A+ Graded 100% C-spine flexion / extension views assess what? - CORRECT ANSWER-Anterior and posterior movement or lack of movement due to an injury What does ERCP stand for? - CORRECT ANSWER-Endoscopic retrograde cholangiopancreatography What is an ERCP used for? - CORRECT ANSWER-To investigate biliary tree, CBD, gallbladder and pancreas Ball catchers view is good to assess what? - CORRECT ANSWER-Early stages of Rheumatoid Arthritis Low blood press...

Co-60 dmax - 0.5cm 6x dmax - 1.5cm 10x dmax - 2.5cm 18x dmax - 3.5cm % attenuation in water for: 6MV 10MV 18MV - 6MV=3%/cm 10MV=2.5%/cm 18MV=2%/cm Electron attenuation in AIR - 2%/cm 105 to 110 SSD change in output ~10% Electron attenuation in WATER and LEAD - 2MeV/cm for Water 2MeV/mm for Lead Electron range in Cerrobend compared to lead - 1.2xPb Photon contamination of electrons for 6E 12E 20E - 6E=1% 12E=2% 20E=5% Tissue Density for Lung Fat Muscle B...

C-spine flexion / extension views assess what? - Anterior and posterior movement or lack of movement due to an injury What does ERCP stand for? - Endoscopic retrograde cholangiopancreatography What is an ERCP used for? - To investigate biliary tree, CBD, gallbladder and pancreas Ball catchers view is good to assess what? - Early stages of Rheumatoid Arthritis Low blood pressure and dizziness due to standing up too quickly - Orthostatic hypertension What is Shenton's Line? - An imaginary c...

MDCB Exam Study Guide Questions with Correct Answers (T/F) In SAD techniques, the beams are weighted at dmax point. - Correct Answer False (T/F) In SAD techniques, the beams are weighted at target center. - Correct Answer False (T/F) Isodose or PDD data can be used directly for a patient, without any modification. - Correct Answer False (T/F) TAR concept is usually not used with accelerator photon beams because the dose in free air is not well defined due to conceptual difficulties - C...

A pt w/ R hemiplegia and loss of sensation affecting the leg more than arm who is aphasic probably had a stroke in which artery? L middle cerebral R posterior cerebellar R anterior cerebral L anterior cerebral correct answer: L anterior cerebral a pt w/ hemiplegia who is impulsive, emotionally labile and gets easily probably had a stroke in which hemisphere? correct answer: R a pt w/ L hemiplegia affecting the arm more than the leg most likely had a stroke in which a? Posterio...