Anode Cooling

On a system with a maximum of 40,000 heat units, which combination of consecutive exposures should not be taken because it would cause overheating the anode? A. exposure 1-5,000 HU, exposure 2 10,000 HU B. exposure 1-20,000 HU, exposure 2 5,000 HU C. exposure 1-40,000 HU, exposure 2 20,000 HU D. exposure 1-10,000 HU, exposure 2 10,000 HU

C. exposure 1-40,000 HU, exposure 2 20,000 HU

in an imaging system with a maximum heat unit of 40,000 which of the following combinations of exposures could be produced without a cooling- off period a. 2 consecutive exposures of 5,000 HU each b. 2 consecutive exposures of 20,000 HU each c. 2 consecutive exposures of 30,000 HU each d. 2 consecutive exposures of 40,000 HU each

a. 2 consecutive exposures of 5,000 HU each

An image was taken resulting in the creation of 75,000 HU. Approximately how long will it take the anode to cool down completely? a. 7 mins b. 9 mins c. 11 mins d. 12 mins

a. 7 mins

An image was taken resulting in the creation of 200,000 HU. Approximately how long will it take the anode to cool down completely? a. 12 mins b. 13 mins c. 14 mins d. 15 mins

b. 13 mins

an anode has a maximum of 40,000 HU. one exposure of 10,000 HU is produced. what are the remaining HU available a. 0 b. 30,000 c. 35,000 d. 40,000

b. 30,000

an exposure is taken resulting in 200,000 HU. how long will it take the anode to cool 50,000? a. 4 mins b. 5 mins c. 7 mins d. 9 mins

b. 5 mins

taking exposures over the maximum heat units allowed without a cooling off period would result in a. underexposed images b. an overheated anode c. artifacts presents in the image d. a non-functioning anode

b. an overheated anode

which of the following exams would produce the least amount of heat units and require the shortest anode cooling time? a. PA & lateral chest b. 3V lumbar spine series c. 1 PA hand of bone age study d. adult bone survey

c. 1 PA hand of bone age study

An image was taken resulting in 350,000 heat units (HU). How long will it take for the anode to cool down completely? a. 8mins b. 13 mins c. 15 mins d. 18 mins

c. 15 mins

an exposure is taken resulting in 250,000 HU. How long will it take the anode to cool to 100,000 a. 0.5 mins b. 2 mins c. 3 mins d. 4 mins

c. 3 mins

The purpose of an anode cooling chart is to determine the proper amount of a. MA before taking another exposure b. KVP before taking another exposure c. time before taking another exposure d. SID before taking another exposure

c. time before taking another exposure

an exposure is taken resulting in 300,000 HU. How long will it take the anode to cool to 100,000 a. 0.25 min b. 1 min c. 2.5 min d. 3.5 min

d. 3.5 min

the production of xrays at the anode target produces what percentage of heat? a. 1% heat b. 9% heat c. 11% heat d. 99% heat

d. 99% heat

which of the following scenarios would result in the largest amount of heat units, thus requiring the longest anode cooling time a. routine chest series on a hyposthenic patient b. routine lumbar series on a hyposthenic patient c. routine lumbar series on asthenic patient d. routine abdomen series on a hypersthenic patient

d. routine abdomen series on a hypersthenic patient

how long would it take the anode to cool completely after using an 180,000 HU exposure? a. 2 mins b. 8 mins c. 10 mins d. 12 mins

need chart to determine d. 12 mins

how long would it take the anode to cool completely after using a 120,000 HU exposure a. 4 mins b. 8 mins c. 10 mins d. 14 mins

need chart to determine c. 10 mins

how long would it take the anode to cool completely after using a 240,000 HU exposure a. 0 min b. 1 min c. 13 mins d. 14 mins

need chart to determine d. 14 mins

using the following illustration what is the maximum number of HU this tube can absorb? a. 220 HU b. 240 HU c. 1,000 HU d. 240,000 HU

need chart to determine d. 240,000 HU

an exposure is produced with 20,000 HU what is the required anode cooling time a. 0 mins b. 1 mins c. 2 mins d. 4 mins

need chart to determine d. 4 mins

how long would it take the anode to cool completely after using a 20,000 HU exposure a. 2 mins b. 4 mins c. 10 mins d. 20 mins

need image of chart b. 4 mins